Pub Date : 2022-01-26DOI: 10.5252/cryptogamie-algologie2022v43a1
Thea R. Popolizio, C. Schneider, Walter M. Jongbloed, G. Saunders, C. Lane
ABSTRACT In the last decade, molecular tools have revealed a significant number of previously unrecognized taxa in Bermuda's marine flora, especially among the Rhodophyta. A number of species have been persistently misidentified based on morphological similarities to species described from other localities. Some have been assigned to existing taxa not previously reported for the islands, and many have been determined to be novel species. Of late, researchers have substantially modified the ‘Laurencia complex’ in several regions around the globe. Herein, we confirm the presence in Bermuda of five of the eight genera recognized in this complex – Laurencia J.V.Lamouroux, Chondrophycus (J.Tokida & Y.Saito) Garbary & J.T.Harper, Palisada (Yamada) K.W.Nam, Yuzurua (K.W.Nam) Martin-Lescanne and Laurenciella Cassano, Gil-Rodríguez, Senties, Díaz-Larrea, M.C.Oliveira & M.T.Fujii, and discuss the species historically and presently known in the islands. Both rbcL chloroplast sequences and COI-5P mitochondrial sequences support the recognition of at least two species for what has historically been labeled L. obtusa in Bermuda, these assigned to L. dendroidea J.Agardh and L. catarinensis Cordeiro-Marino & M.T.Fujii in molecular analyses. We present two new species, Chondrophycus planiparvus Popolizio, C.W.Schneider & C.E.Lane, sp. nov. and Laurenciella namii Popolizio, C.W.Schneider & C.E.Lane, sp. nov., the latter genetically distinct from L. marilzae (Gil-Rodriguez, Sentíes, Diaz-Larrea, Cassano & M.T.Fujii) Gil-Rodriguez, Sentíes, Diaz-Larrea, Cassano & M.T.Fujii, L. mayaimii Collado-Vides, Cassano & M.T.Fujii and an undescribed species from Brazil. We also used ITS (rRNA) sequences to explore species limits for Laurencia catarinensis, L. dendroidea and L. microcladia Kützing. A full description of Laurencia microcladia, based on recent collections from Bermuda and the Caribbean Sea, is also included in this study.
{"title":"Molecular Analysis Resolves the Taxonomy of the Laurencia Complex (Rhodomelaceae, Ceramiales) in Bermuda and Uncovers Novel Species of Chondrophycus and Laurenciella","authors":"Thea R. Popolizio, C. Schneider, Walter M. Jongbloed, G. Saunders, C. Lane","doi":"10.5252/cryptogamie-algologie2022v43a1","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2022v43a1","url":null,"abstract":"ABSTRACT In the last decade, molecular tools have revealed a significant number of previously unrecognized taxa in Bermuda's marine flora, especially among the Rhodophyta. A number of species have been persistently misidentified based on morphological similarities to species described from other localities. Some have been assigned to existing taxa not previously reported for the islands, and many have been determined to be novel species. Of late, researchers have substantially modified the ‘Laurencia complex’ in several regions around the globe. Herein, we confirm the presence in Bermuda of five of the eight genera recognized in this complex – Laurencia J.V.Lamouroux, Chondrophycus (J.Tokida & Y.Saito) Garbary & J.T.Harper, Palisada (Yamada) K.W.Nam, Yuzurua (K.W.Nam) Martin-Lescanne and Laurenciella Cassano, Gil-Rodríguez, Senties, Díaz-Larrea, M.C.Oliveira & M.T.Fujii, and discuss the species historically and presently known in the islands. Both rbcL chloroplast sequences and COI-5P mitochondrial sequences support the recognition of at least two species for what has historically been labeled L. obtusa in Bermuda, these assigned to L. dendroidea J.Agardh and L. catarinensis Cordeiro-Marino & M.T.Fujii in molecular analyses. We present two new species, Chondrophycus planiparvus Popolizio, C.W.Schneider & C.E.Lane, sp. nov. and Laurenciella namii Popolizio, C.W.Schneider & C.E.Lane, sp. nov., the latter genetically distinct from L. marilzae (Gil-Rodriguez, Sentíes, Diaz-Larrea, Cassano & M.T.Fujii) Gil-Rodriguez, Sentíes, Diaz-Larrea, Cassano & M.T.Fujii, L. mayaimii Collado-Vides, Cassano & M.T.Fujii and an undescribed species from Brazil. We also used ITS (rRNA) sequences to explore species limits for Laurencia catarinensis, L. dendroidea and L. microcladia Kützing. A full description of Laurencia microcladia, based on recent collections from Bermuda and the Caribbean Sea, is also included in this study.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81182428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-22DOI: 10.5252/cryptogamie-algologie2021v42a15
P. Gupta
ABSTRACT Antarctica is an extreme environment and contains many unique geological, glaciological and biological features. However, due to changes in climatic conditions Antarctica is affected by Global warming. The Larsemann Hills area is located in East Antarctica approximately halfway between Vest fold Hills and Amery Ice Shelf on South-eastern coast of Prydz Bay which includes two main peninsulas, the western named Stornes and the eastern named Broknes. The Antarctic environment is highly sensitive and susceptible to the impacts of human activities and has much less natural ability to recover from disturbance than the environment of other continents. Due to coastal location and ice free landscape, Larsemann Hills is an attractive area for human activities which consit on scientific expeditions as well as touristic activities which are currently increasing. It is hypothesized that due to increase in land use pressure, the growth and diversity of Cyanobacteria in this area may be affected. The aim of this study was to record Cyanobacteria from freshwater bodies, rocks and terrestrial habitats. Considering the two main peninsulas, Stornes peninsula comes under the Antarctic Specially Protected Area (ACPA) so the samples were collected from diverse habitats of Broknes Peninsula. Altogether, 16 species of Cyanobacteria belonging to nine genera were recorded from diverse habitat of Broknes Peninsula of Larsemann Hills. This is the first Indian study report of Cyanobacteria of Broknes peninsula of Larsemann Hills. All species are reported for the first time and therefore constitutes new record from this area.
{"title":"First Report of Diversity of Cyanobacteria of Broknes Peninsula of Larsemann Hills, East Antarctica","authors":"P. Gupta","doi":"10.5252/cryptogamie-algologie2021v42a15","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a15","url":null,"abstract":"ABSTRACT Antarctica is an extreme environment and contains many unique geological, glaciological and biological features. However, due to changes in climatic conditions Antarctica is affected by Global warming. The Larsemann Hills area is located in East Antarctica approximately halfway between Vest fold Hills and Amery Ice Shelf on South-eastern coast of Prydz Bay which includes two main peninsulas, the western named Stornes and the eastern named Broknes. The Antarctic environment is highly sensitive and susceptible to the impacts of human activities and has much less natural ability to recover from disturbance than the environment of other continents. Due to coastal location and ice free landscape, Larsemann Hills is an attractive area for human activities which consit on scientific expeditions as well as touristic activities which are currently increasing. It is hypothesized that due to increase in land use pressure, the growth and diversity of Cyanobacteria in this area may be affected. The aim of this study was to record Cyanobacteria from freshwater bodies, rocks and terrestrial habitats. Considering the two main peninsulas, Stornes peninsula comes under the Antarctic Specially Protected Area (ACPA) so the samples were collected from diverse habitats of Broknes Peninsula. Altogether, 16 species of Cyanobacteria belonging to nine genera were recorded from diverse habitat of Broknes Peninsula of Larsemann Hills. This is the first Indian study report of Cyanobacteria of Broknes peninsula of Larsemann Hills. All species are reported for the first time and therefore constitutes new record from this area.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90973353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-03DOI: 10.5252/cryptogamie-algologie2021v42a14
J. Huisman, G. Saunders
ABSTRACT Molecular analyses have indicated that several Australian taxa previously identified as the red alga Plocamium cartilagineum do not group with that species as known from its northern hemisphere type locality. One of these species-level genetic groups corresponds precisely with Plocamium pusillum, a species described by Sonder in 1845 based on Preiss specimens from south-western Australia, but regarded as a heterotypic synonym of P. cartilagineum in recent morphology-based treatments. A specimen of P. pusillum in the Melbourne Herbarium (MEL) has been examined and designated as lectotype; its morphology agrees with recently collected specimens included in molecular analyses and is clearly shown to differ from authentic P. cartilagineum. Plocamium pusillum is therefore resurrected and is characterized genetically and morphologically.
{"title":"Resurrection of Plocamium pusillum Sonder (Plocamiaceae, Rhodophyta) from Australia","authors":"J. Huisman, G. Saunders","doi":"10.5252/cryptogamie-algologie2021v42a14","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a14","url":null,"abstract":"ABSTRACT Molecular analyses have indicated that several Australian taxa previously identified as the red alga Plocamium cartilagineum do not group with that species as known from its northern hemisphere type locality. One of these species-level genetic groups corresponds precisely with Plocamium pusillum, a species described by Sonder in 1845 based on Preiss specimens from south-western Australia, but regarded as a heterotypic synonym of P. cartilagineum in recent morphology-based treatments. A specimen of P. pusillum in the Melbourne Herbarium (MEL) has been examined and designated as lectotype; its morphology agrees with recently collected specimens included in molecular analyses and is clearly shown to differ from authentic P. cartilagineum. Plocamium pusillum is therefore resurrected and is characterized genetically and morphologically.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84490625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-29DOI: 10.5252/cryptogamie-algologie2021v42a13
A. Saber, N. Angeli, H. LANGE-BERTALOT, J. Kociolek, D. Spitale, D. Charles, M. Cantonati
ABSTRACT The subgenus Rhoicosphenula Lange-Bert. has a unique character combination that differentiates it from Gomphosphenia subgen. Gomphosphenia Lange-Bert. In particular, Rhoicosphenula has striae/areola features that are similar to Gomphosphenia, but is differentiated from that genus by also having pseudosepta present on both poles of the valves, copulae with septa at one of the poles, and frustules almost rectangular in girdle view. Together, this character combination strongly supports it as an independent genus following modern diatom-taxonomy criteria. Moreover, the only species of Rhoicosphenula known so far was collected from a peculiar acidic and dystrophic habitat, whilst most Gomphosphenia s.s. species colonize medium-conductivity, alkaline inland waters. On the basis of LM and SEM studies, we also propose a species of Gomphosphenia (G. patrickiana Cantonati, Lange-Bert., Kociolek & A.A.Saber, sp. nov.) as new to science. The new species is mainly defined by its valve outline and dimensions, length to breadth ratio, striation density, and geographical distribution. It was found in several samples of two streams in Puerto Rico, sometimes with high relative abundance. Gomphosphenia patrickiana Cantonati, Lange-Bert., Kociolek & A.A.Saber, sp. nov. was much more abundant in the stream with lower nutrient (in particular P) concentrations, and higher ecological integrity. The new species seems to prefer moderately alkaline freshwater habitats with medium-high conductivity and oligo- to mesotrophic conditions, with moderate tolerance to N enrichment. Also noteworthy is the occurrence of the new species in streams with above-average magnesium concentrations (due to the local geology). This Neotropical, warm-water species might be a potential indicator of global warming effects.
{"title":"Rise of Subgen. Rhoicosphenula Lange-Bert. to the Genus Level, and Description of a New Gomphosphenia s.s. Species from Puerto Rico","authors":"A. Saber, N. Angeli, H. LANGE-BERTALOT, J. Kociolek, D. Spitale, D. Charles, M. Cantonati","doi":"10.5252/cryptogamie-algologie2021v42a13","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a13","url":null,"abstract":"ABSTRACT The subgenus Rhoicosphenula Lange-Bert. has a unique character combination that differentiates it from Gomphosphenia subgen. Gomphosphenia Lange-Bert. In particular, Rhoicosphenula has striae/areola features that are similar to Gomphosphenia, but is differentiated from that genus by also having pseudosepta present on both poles of the valves, copulae with septa at one of the poles, and frustules almost rectangular in girdle view. Together, this character combination strongly supports it as an independent genus following modern diatom-taxonomy criteria. Moreover, the only species of Rhoicosphenula known so far was collected from a peculiar acidic and dystrophic habitat, whilst most Gomphosphenia s.s. species colonize medium-conductivity, alkaline inland waters. On the basis of LM and SEM studies, we also propose a species of Gomphosphenia (G. patrickiana Cantonati, Lange-Bert., Kociolek & A.A.Saber, sp. nov.) as new to science. The new species is mainly defined by its valve outline and dimensions, length to breadth ratio, striation density, and geographical distribution. It was found in several samples of two streams in Puerto Rico, sometimes with high relative abundance. Gomphosphenia patrickiana Cantonati, Lange-Bert., Kociolek & A.A.Saber, sp. nov. was much more abundant in the stream with lower nutrient (in particular P) concentrations, and higher ecological integrity. The new species seems to prefer moderately alkaline freshwater habitats with medium-high conductivity and oligo- to mesotrophic conditions, with moderate tolerance to N enrichment. Also noteworthy is the occurrence of the new species in streams with above-average magnesium concentrations (due to the local geology). This Neotropical, warm-water species might be a potential indicator of global warming effects.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90711288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.5252/cryptogamie-algologie2021v42a12
J. Féral, M. Verlaque, S. Rosenfeld, E. Poulin, A. Chenuil, T. Saucède
ABSTRACT Conceived as a baseline for the management and conservation of the marine protected area of the French Southern Territories (réserve naturelle nationale des Terres australes françaises), the checklist of marine macroalgae of the Kerguelen Islands was updated based on an extensive review of the literature and scientific databases, from the first report of the Ross expedition, in 1840, to the most recent works. This work was also conceived as a starting point for forthcoming investigations using molecular systematics tools and for monitoring the effects of global change on sub-Antarctic marine ecosystems. After a brief history of scientific campaigns, a list of 166 species was established (103 Rhodophyta, 35 Chlorophyta and 28 Ochrophyta [Phaeophyceae]). Molecular systematics studiess have shown the existence of recurrent discrepancies between the established, morphology-based taxonomy and molecular species delimitation, calling for a revision of systematics. Nevertheless, a first analysis of biogeographical affinities of the marine flora of the Kerguelen Islands is carried out and preliminary results are partially congruent with the main regions currently recognized in the Southern Ocean suggesting the importance of long-distance dispersal to explain the observed distribution patterns.
作为法国南部领土海洋保护区管理和保护的基线(rserve naturelle des Terres australes franaises)，凯尔格伦群岛海洋大型藻类清单是在广泛审查文献和科学数据库的基础上进行更新的，从1840年罗斯探险队的第一份报告到最近的工作。这项工作也被设想为今后使用分子系统学工具进行调查和监测全球变化对亚南极海洋生态系统的影响的起点。经过简短的科学研究，建立了166种植物的名录(红藻103种，绿藻35种，绿藻28种)。分子系统学研究表明，在已建立的基于形态的分类和分子物种划分之间存在反复的差异，要求对系统学进行修订。尽管如此，对凯尔盖伦群岛海洋植物区系的生物地理亲缘性进行了初步分析，初步结果与目前在南大洋公认的主要区域部分一致，这表明远距离分散对解释观察到的分布模式的重要性。
{"title":"The Marine Vegetation of the Kerguelen Islands: History of Scientific Campaigns, Inventory of the Flora and First Analysis of Its Biogeographical Affinities","authors":"J. Féral, M. Verlaque, S. Rosenfeld, E. Poulin, A. Chenuil, T. Saucède","doi":"10.5252/cryptogamie-algologie2021v42a12","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a12","url":null,"abstract":"ABSTRACT Conceived as a baseline for the management and conservation of the marine protected area of the French Southern Territories (réserve naturelle nationale des Terres australes françaises), the checklist of marine macroalgae of the Kerguelen Islands was updated based on an extensive review of the literature and scientific databases, from the first report of the Ross expedition, in 1840, to the most recent works. This work was also conceived as a starting point for forthcoming investigations using molecular systematics tools and for monitoring the effects of global change on sub-Antarctic marine ecosystems. After a brief history of scientific campaigns, a list of 166 species was established (103 Rhodophyta, 35 Chlorophyta and 28 Ochrophyta [Phaeophyceae]). Molecular systematics studiess have shown the existence of recurrent discrepancies between the established, morphology-based taxonomy and molecular species delimitation, calling for a revision of systematics. Nevertheless, a first analysis of biogeographical affinities of the marine flora of the Kerguelen Islands is carried out and preliminary results are partially congruent with the main regions currently recognized in the Southern Ocean suggesting the importance of long-distance dispersal to explain the observed distribution patterns.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77560586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-23DOI: 10.5252/cryptogamie-algologie2021v42a11
V. Peña, Tamara Ruiz De Gauna Torres
ABSTRACT Lithophyllum stictiforme (Areschoug) Hauck contributes to the formation of the Mediterranean coralligenous concretions. In the Atlantic Iberian Peninsula, L. stictiforme has also been reported based on subtidal collections showing the characteristic morphology described for this species. Recent studies uncovered a diverse complex of cryptic species from the Mediterranean Sea assigned to L. stictiforme. Thereafter, the Atlantic Iberian collections have been re-assessed with the aim of clarifying its taxonomic status. Based on molecular (COI, psbA) and morphological data, the new species Lithophyllum artabricum V.Peña, sp. nov. is described herein. Molecular phylogenetic analyses were congruent in delimiting the Atlantic Iberian collections as an independent lineage from the Mediterranean L. stictiforme complex. Morpho-anatomical characters of the new species showed an overlap with those provided for the Mediterranean clades of L. stictiforme. However, L. artabricum V.Peña, sp. nov. has a monomerous thallus construction whereas the Mediterranean taxa were mainly dimerous. Moreover, L. artabricum V.Peña, sp. nov. differs from other Atlantic European Lithophyllum species by a combination of characters related to the external morphology consisting of single or superimposed lamellae, the monomerous construction, the conical shape of the canal pore of sporangial conceptacles, and by occurring only in subtidal bedrocks. Lithophyllum artabricum V.Peña, sp. nov. is at present known from northern Spain to northern Portugal. One collection of L. stictiforme from southern Portugal showed similarities with L. artabricum V.Peña, sp. nov.; however, DNA sequence data are necessary to confirm this record. Based on the evidence presented herein, L. stictiforme is removed from the flora of northern and northwestern Spain, and northern Portugal. The finding of cryptic diversity in L. stictiforme suggested that further reports of this species in warm and temperate waters should be re-assessed.
{"title":"Lithophyllum artabricum V.Peña, sp. nov. (Corallinales, Rhodophyta): A Cryptic Species in the Atlantic Iberian Peninsula Hitherto Assigned to Lithophyllum stictiforme (Areschoug) Hauck","authors":"V. Peña, Tamara Ruiz De Gauna Torres","doi":"10.5252/cryptogamie-algologie2021v42a11","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a11","url":null,"abstract":"ABSTRACT Lithophyllum stictiforme (Areschoug) Hauck contributes to the formation of the Mediterranean coralligenous concretions. In the Atlantic Iberian Peninsula, L. stictiforme has also been reported based on subtidal collections showing the characteristic morphology described for this species. Recent studies uncovered a diverse complex of cryptic species from the Mediterranean Sea assigned to L. stictiforme. Thereafter, the Atlantic Iberian collections have been re-assessed with the aim of clarifying its taxonomic status. Based on molecular (COI, psbA) and morphological data, the new species Lithophyllum artabricum V.Peña, sp. nov. is described herein. Molecular phylogenetic analyses were congruent in delimiting the Atlantic Iberian collections as an independent lineage from the Mediterranean L. stictiforme complex. Morpho-anatomical characters of the new species showed an overlap with those provided for the Mediterranean clades of L. stictiforme. However, L. artabricum V.Peña, sp. nov. has a monomerous thallus construction whereas the Mediterranean taxa were mainly dimerous. Moreover, L. artabricum V.Peña, sp. nov. differs from other Atlantic European Lithophyllum species by a combination of characters related to the external morphology consisting of single or superimposed lamellae, the monomerous construction, the conical shape of the canal pore of sporangial conceptacles, and by occurring only in subtidal bedrocks. Lithophyllum artabricum V.Peña, sp. nov. is at present known from northern Spain to northern Portugal. One collection of L. stictiforme from southern Portugal showed similarities with L. artabricum V.Peña, sp. nov.; however, DNA sequence data are necessary to confirm this record. Based on the evidence presented herein, L. stictiforme is removed from the flora of northern and northwestern Spain, and northern Portugal. The finding of cryptic diversity in L. stictiforme suggested that further reports of this species in warm and temperate waters should be re-assessed.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81401341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-07DOI: 10.5252/cryptogamie-algologie2021v42a10
D. Serio, G. Furnari
ABSTRACT In this paper, a new species of the Cystoseira complex from Porto Palo di Capo Passero (Sicily, Italy) is described. The species, which shows the same characters as Cystoseira hyblaea Giaccone as described by Giaccone (1986) and Bouafif et al. (2016), from its morpho-anatomical characters, is assigned to the genus Ericaria Stackhouse. Because of “Cystoseira hyblaea” was not validly published name, Ericaria giacconei sp. nov. is here described. The main characteristics of the species are: 1) a caespitose habit; 2) large axes rugged with apices smooth, not prominent; 3) vegetative branches without spinose appendages; 4) primary branches with a cupressoid outline, especially when they are fertile; and 5) receptacles terminal, compact, cylindrical-oval, verrucose, with deciduous spinose appendages. Ericaria giacconei sp. nov. is related to both E. crinita (Duby) Molinari & Guiry and E. barbatula (Kützing) Molinari & Guiry, but it differs from them mainly in the basal system consisting of a robust and compact basal disc and in apex of cauloids smooth and not prominent, never surrounded by spiniform appendages. A critical re-examination of herbarium specimens from Isola delle Correnti (eastern Sicily, Italy) attributed to E. crinita (as C. crinita) demonstrated that they actually belong to our new species.
本文报道了意大利西西里岛波尔图帕洛阿尔迪卡波帕塞拉(Porto Palo di Capo Passero)的Cystoseira复合体的一个新种。该种与Giaccone(1986)和Bouafif et al.(2016)描述的Cystoseira hyblaea Giaccone具有相同的形态解剖特征，归属于erica Stackhouse属。由于“杂胞囊孢菌”没有被有效发表的名称，在这里描述的是紫锥虫。该物种的主要特征是:1)有寄生习性;2)大轴粗犷，顶端光滑，不突出;3)无刺附属物的营养枝;4)具有柏木状轮廓的初级枝，特别是当它们肥沃时;5)花托顶生，紧密，圆筒状卵圆形，疣状，具落叶刺附属物。giacconei p. 11 .与E. criinita (Duby) Molinari & Guiry和E. barbatula (k tzing) Molinari & Guiry有亲缘关系，但与它们的不同之处主要在于基部系统由结实紧凑的基盘组成，茎尖光滑但不突出，从不被棘状附属物包围。在意大利西西里岛东部的Isola delle Correnti (Isola delle Correnti, Italy)发现的植物标本被鉴定为E. criinita(被称为C. criinita)，这表明它们实际上属于我们的新种。
{"title":"Ericaria giacconei sp. nov. (Sargassaceae, Fucophyceae), the Species to which the Invalidly Published Cystoseira hyblaea Giaccone should be Referred","authors":"D. Serio, G. Furnari","doi":"10.5252/cryptogamie-algologie2021v42a10","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a10","url":null,"abstract":"ABSTRACT In this paper, a new species of the Cystoseira complex from Porto Palo di Capo Passero (Sicily, Italy) is described. The species, which shows the same characters as Cystoseira hyblaea Giaccone as described by Giaccone (1986) and Bouafif et al. (2016), from its morpho-anatomical characters, is assigned to the genus Ericaria Stackhouse. Because of “Cystoseira hyblaea” was not validly published name, Ericaria giacconei sp. nov. is here described. The main characteristics of the species are: 1) a caespitose habit; 2) large axes rugged with apices smooth, not prominent; 3) vegetative branches without spinose appendages; 4) primary branches with a cupressoid outline, especially when they are fertile; and 5) receptacles terminal, compact, cylindrical-oval, verrucose, with deciduous spinose appendages. Ericaria giacconei sp. nov. is related to both E. crinita (Duby) Molinari & Guiry and E. barbatula (Kützing) Molinari & Guiry, but it differs from them mainly in the basal system consisting of a robust and compact basal disc and in apex of cauloids smooth and not prominent, never surrounded by spiniform appendages. A critical re-examination of herbarium specimens from Isola delle Correnti (eastern Sicily, Italy) attributed to E. crinita (as C. crinita) demonstrated that they actually belong to our new species.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76406645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-18DOI: 10.5252/cryptogamie-algologie2021v42a9
S. Heesch, J. Sutherland, S. Ringham, W. Nelson
ABSTRACT Manawatāwhi/Three Kings Islands lie to the north of the North Island of New Zealand. Manawatāwhi is part of the rohe (territory) of Ngāti Kuri, with the islands having spiritual, cultural, political and customary significance. This group of small islands has one of the most pristine coastlines in New Zealand, with no human-mediated impacts from current land use, no permanent anchorage points, and landing on the islands is prohibited. The islands harbour a rich marine biota with a number of endemic species. A recent collection trip and molecular genetic studies using the rbcL marker revealed the presence of three entities of the genus Ulva L. (Ulvales, Chlorophyta) on the islands. One of these we describe herein as Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. While it is genetically close to U. adhaerens Matsumoto & Shimada from Japan, differences in morphology, habitat and rbcL gene region, including the presence of a large group II intron in U. adhaerens, which was lacking in the Manawatāwhi specimen, led us to conclude U. piritoka sp. nov. belongs to a distinct species. We also confirmed the presence of Ulva compressa L. and Ulva rigida C.Agardh, both of which, although present on the New Zealand mainland, were originally described from Europe and are considered introductions to the New Zealand archipelago. These are the first reported marine non-indigenous species (NIS) recorded from Manawatāwhi/Three Kings Islands, and the implications of their presence are discussed.
{"title":"Ulva L. (Ulvales, Chlorophyta) from Manawatāwhi/ Three Kings Islands, New Zealand: Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. and Records of Two Nonnative Species, U. compressa and U. rigida","authors":"S. Heesch, J. Sutherland, S. Ringham, W. Nelson","doi":"10.5252/cryptogamie-algologie2021v42a9","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a9","url":null,"abstract":"ABSTRACT Manawatāwhi/Three Kings Islands lie to the north of the North Island of New Zealand. Manawatāwhi is part of the rohe (territory) of Ngāti Kuri, with the islands having spiritual, cultural, political and customary significance. This group of small islands has one of the most pristine coastlines in New Zealand, with no human-mediated impacts from current land use, no permanent anchorage points, and landing on the islands is prohibited. The islands harbour a rich marine biota with a number of endemic species. A recent collection trip and molecular genetic studies using the rbcL marker revealed the presence of three entities of the genus Ulva L. (Ulvales, Chlorophyta) on the islands. One of these we describe herein as Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. While it is genetically close to U. adhaerens Matsumoto & Shimada from Japan, differences in morphology, habitat and rbcL gene region, including the presence of a large group II intron in U. adhaerens, which was lacking in the Manawatāwhi specimen, led us to conclude U. piritoka sp. nov. belongs to a distinct species. We also confirmed the presence of Ulva compressa L. and Ulva rigida C.Agardh, both of which, although present on the New Zealand mainland, were originally described from Europe and are considered introductions to the New Zealand archipelago. These are the first reported marine non-indigenous species (NIS) recorded from Manawatāwhi/Three Kings Islands, and the implications of their presence are discussed.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75370931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-04DOI: 10.5252/cryptogamie-algologie2021v42a8
Natalia L. Rossignolo, M. L. Vis, M. O. Paiano, P. Eloranta, J. West, E. Ganesan, F. Yasmin, P. Lim, O. Necchi
ABSTRACT Most genera of the freshwater red algal order Batrachospermales have been systematically revised using molecular and morphological data, but Sirodotia Kylin remains to be thoroughly reviewed. In this investigation, DNA sequence data for the rbcL, COI-5P and LSU markers of specimens collected worldwide were combined with morphological observations to assess their specific diversity, infer their relationships and evaluate the morphological characters relevant for species identification. Phylogenetic analyses showed the genus to be a monophyletic lineage with high support. Inter- and intra-specific divergence values were well-delineated with higher interspecific (2.1-7% and 4.4-10.5%) and lower intraspecific (0-2.4% and 0-3.8%) variations for rbcL and COI-5P sequences, respectively. LSU sequences revealed lower interspecific divergence values than the COI-5P sequences (0.7-3.3%) indicating less resolution as a barcode marker. Nine species are recognized based on DNA sequence data, morphological characters and geographic distribution. Five species were previously described (S. assamica Necchi, Rossignolo, Yasmin, J.A.West & Ganesan, S. delicatula Skuja, S. huillensis (Welwitsch ex West & GSWest) Skuja, S. kennedyi A.L.Szinte, J.C.Taylor & M.L.Vis and S. suecica Kylin) and four new species are proposed (S. amazonica Necchi, N.L.Rossignolo & M.O.Paiano, sp. nov., S. aquiloamericana Necchi, N.L.Rossignolo & M.L.Vis, sp. nov., S. cryptica Necchi, N.L.Rossignolo & M.O.Paiano, sp. nov. and S. delicatuliformis Necchi, N.L.Rossignolo & M.O.Paiano, sp. nov.). Diagnostic characters for the genus are confirmed to be carpogonia asymmetric with a basal protuberance and carposporophytes diffuse with indeterminant prostrate filaments producing determinate erect branches terminating in carposporangia. The following morphological characters were applied to distinguish species: primary fascicle cell number, spermatangial arrangement, origin of gonimoblast filament and size of carposporangia. Based on morphology, S. sinica, S. segawae and S. yutakae are proposed as synonyms of S. suecica and S. ateleia Skuja of S. delicatula. The status of three species (S. cirrhosa Skuja ex M.S.Balakr. & B.B.Chaugule, S. gardneri Skuja ex Flint and S. huangshanensis Z.X.Shi & S.L.Xie) could not be confirmed due to lack of type specimens and published information on informative diagnostic characters.
淡水红藻目Batrachospermales的大多数属已经利用分子和形态学数据进行了系统的修订，但麒麟西罗多亚(Sirodotia Kylin)仍有待彻底的审查。本研究将世界各地标本rbcL、COI-5P和LSU标记的DNA序列数据与形态学观察相结合，评估它们的特异性多样性，推断它们之间的关系，并评价与物种鉴定相关的形态学特征。系统发育分析表明该属为单系谱系，支持度高。rbcL和COI-5P序列的种间和种内差异值较高(2.1-7%和4.4-10.5%)，种内差异较低(0-2.4%和0-3.8%)。LSU序列的种间差异值低于COI-5P序列(0.7-3.3%)，表明其作为条形码标记的分辨率较低。根据DNA序列数据、形态特征和地理分布鉴定出9种。5个新种(assamica Necchi, Rossignolo, Yasmin, J.A.West & Ganesan, S. delicatula Skuja, S. huillensis (Welwitsch ex West & GSWest) Skuja, S. kennedyi A.L.Szinte, j.c.t ell&m.l.vis和S. suecica Kylin)， 4个新种(S. amazonica Necchi, N.L.Rossignolo & m.o.p iano, sp. 11)， S. aquiloamericana Necchi, n.l.l Rossignolo & m.o.p iano, sp. 11)， S. cryptica Necchi, n.l.l Rossignolo & m.o.p iano, sp. 11)， S. delicatuliformis Necchi, n.l.l Rossignolo & m.o.p iano, sp. 11)。N.L.Rossignolo & M.O.Paiano, sp. 11)。本属的诊断特征为不对称的具基部突起的车孢子体和弥散的车孢子体，有不确定的匍匐花丝，产生确定的直立分支，终止于车孢子体。以初生束细胞数、精管排列方式、成性腺丝的来源和孢子囊的大小等形态学特征作为分种依据。从形态学上看，中国金丝桃、segawae和yutakae被认为是中国金丝桃(S. suecica)和中国金丝桃(S. ateleia Skuja)的近义词。三个物种的状况(S.肝硬化Skuja前M.S.Balakr。(b . b . chaugle, S. gardneri Skuja ex Flint, S. huangshanensis z.x.x shi & s.l.y xie)由于缺乏模式标本和已发表的信息诊断特征而无法得到证实。
{"title":"Revision of the Genus Sirodotia Kylin (Batrachospermales, Rhodophyta) with Description of Four New Species","authors":"Natalia L. Rossignolo, M. L. Vis, M. O. Paiano, P. Eloranta, J. West, E. Ganesan, F. Yasmin, P. Lim, O. Necchi","doi":"10.5252/cryptogamie-algologie2021v42a8","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a8","url":null,"abstract":"ABSTRACT Most genera of the freshwater red algal order Batrachospermales have been systematically revised using molecular and morphological data, but Sirodotia Kylin remains to be thoroughly reviewed. In this investigation, DNA sequence data for the rbcL, COI-5P and LSU markers of specimens collected worldwide were combined with morphological observations to assess their specific diversity, infer their relationships and evaluate the morphological characters relevant for species identification. Phylogenetic analyses showed the genus to be a monophyletic lineage with high support. Inter- and intra-specific divergence values were well-delineated with higher interspecific (2.1-7% and 4.4-10.5%) and lower intraspecific (0-2.4% and 0-3.8%) variations for rbcL and COI-5P sequences, respectively. LSU sequences revealed lower interspecific divergence values than the COI-5P sequences (0.7-3.3%) indicating less resolution as a barcode marker. Nine species are recognized based on DNA sequence data, morphological characters and geographic distribution. Five species were previously described (S. assamica Necchi, Rossignolo, Yasmin, J.A.West & Ganesan, S. delicatula Skuja, S. huillensis (Welwitsch ex West & GSWest) Skuja, S. kennedyi A.L.Szinte, J.C.Taylor & M.L.Vis and S. suecica Kylin) and four new species are proposed (S. amazonica Necchi, N.L.Rossignolo & M.O.Paiano, sp. nov., S. aquiloamericana Necchi, N.L.Rossignolo & M.L.Vis, sp. nov., S. cryptica Necchi, N.L.Rossignolo & M.O.Paiano, sp. nov. and S. delicatuliformis Necchi, N.L.Rossignolo & M.O.Paiano, sp. nov.). Diagnostic characters for the genus are confirmed to be carpogonia asymmetric with a basal protuberance and carposporophytes diffuse with indeterminant prostrate filaments producing determinate erect branches terminating in carposporangia. The following morphological characters were applied to distinguish species: primary fascicle cell number, spermatangial arrangement, origin of gonimoblast filament and size of carposporangia. Based on morphology, S. sinica, S. segawae and S. yutakae are proposed as synonyms of S. suecica and S. ateleia Skuja of S. delicatula. The status of three species (S. cirrhosa Skuja ex M.S.Balakr. & B.B.Chaugule, S. gardneri Skuja ex Flint and S. huangshanensis Z.X.Shi & S.L.Xie) could not be confirmed due to lack of type specimens and published information on informative diagnostic characters.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89609051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-12DOI: 10.5252/cryptogamie-algologie2021v42a7
Iván Rodríguez‐Buján, M. Pimentel, P. Díaz-Tapia
ABSTRACT The use of molecular tools in red algal diversity surveys often reveals the existence of undescribed species. Here, we report a new Macaronesian turf-forming red alga in the otherwise mostly Pacific genus Melanothamnus Bornet & Falkenberg. This new taxon, Melanothamnus macaronesicus Rodríguez-Buján & Díaz-Tapia, sp. nov. is described based on morphological and molecular (rbcL gene) evidence. Morphologically, it differs from other Melanothamnus taxa by a combination of characters that includes its decumbent habit with an extensive system of prostrate axes, small size (≤2.5 cm), four ecorticate pericentral cells, unbranched to once-branched trichoblasts and spermatangial branches formed on the first dichotomy of trichoblasts that have a sterile apical cell. Molecularly, this new species differs from its congeners by sequence divergence ≥3.3% in the rbcL gene. Current known distribution of M. macaronesicus Rodríguez-Buján & Díaz-Tapia, sp. nov. is restricted to Macaronesia, suggesting that it could be endemic to this archipelago. Our findings suggest that endemicity among red algae might be more common than previously thought in this bioregion, particularly among easily overlooked turf-forming species.
{"title":"Melanothamnus macaronesicus Rodríguez-Buján & Díaz-Tapia, sp. nov. (Rhodomelaceae, Rhodophyta): A New Turf-Forming Species from the Azores and the Canary Islands","authors":"Iván Rodríguez‐Buján, M. Pimentel, P. Díaz-Tapia","doi":"10.5252/cryptogamie-algologie2021v42a7","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2021v42a7","url":null,"abstract":"ABSTRACT The use of molecular tools in red algal diversity surveys often reveals the existence of undescribed species. Here, we report a new Macaronesian turf-forming red alga in the otherwise mostly Pacific genus Melanothamnus Bornet & Falkenberg. This new taxon, Melanothamnus macaronesicus Rodríguez-Buján & Díaz-Tapia, sp. nov. is described based on morphological and molecular (rbcL gene) evidence. Morphologically, it differs from other Melanothamnus taxa by a combination of characters that includes its decumbent habit with an extensive system of prostrate axes, small size (≤2.5 cm), four ecorticate pericentral cells, unbranched to once-branched trichoblasts and spermatangial branches formed on the first dichotomy of trichoblasts that have a sterile apical cell. Molecularly, this new species differs from its congeners by sequence divergence ≥3.3% in the rbcL gene. Current known distribution of M. macaronesicus Rodríguez-Buján & Díaz-Tapia, sp. nov. is restricted to Macaronesia, suggesting that it could be endemic to this archipelago. Our findings suggest that endemicity among red algae might be more common than previously thought in this bioregion, particularly among easily overlooked turf-forming species.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82922835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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