Pub Date : 2022-07-03DOI: 10.1080/17451000.2022.2105893
P. Hernáez, M. Pinheiro, Flavio de Almeida Alves-Júnior, W. Santana
ABSTRACT An annotated checklist of the intertidal species of burrowing shrimps of the Brazilian coast is provided from samples collected during latitudinal research expeditions between 2015 and 2018. A total of 1166 specimens of nine species were collected in these expeditions. These species are listed by infraorder and family as follows: Axiidea: Callianassidae (Biffarius botterae), Callichiridae (Audacallichirus mirim, Callichirus corruptus, Lepidophthalmus siriboia, Neocallichirus guara, N. maryae, N. pinheiroi); Gebiidea: Axianassidae (Axianassa australis), Upogebiidae (Upogebia omissa). For each species, the diagnostic features, distribution and habitat are recorded. The taxonomic information is discussed and compared with the information reported in literature for each taxon.
{"title":"Intertidal burrowing shrimps (Axiidea: Callianassidae, Callichiridae; Gebiidea: Axiannassidae, Upogebiidae) collected along the Brazilian coast","authors":"P. Hernáez, M. Pinheiro, Flavio de Almeida Alves-Júnior, W. Santana","doi":"10.1080/17451000.2022.2105893","DOIUrl":"https://doi.org/10.1080/17451000.2022.2105893","url":null,"abstract":"ABSTRACT An annotated checklist of the intertidal species of burrowing shrimps of the Brazilian coast is provided from samples collected during latitudinal research expeditions between 2015 and 2018. A total of 1166 specimens of nine species were collected in these expeditions. These species are listed by infraorder and family as follows: Axiidea: Callianassidae (Biffarius botterae), Callichiridae (Audacallichirus mirim, Callichirus corruptus, Lepidophthalmus siriboia, Neocallichirus guara, N. maryae, N. pinheiroi); Gebiidea: Axianassidae (Axianassa australis), Upogebiidae (Upogebia omissa). For each species, the diagnostic features, distribution and habitat are recorded. The taxonomic information is discussed and compared with the information reported in literature for each taxon.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"380 - 408"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43083542","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 : 2022-07-03DOI: 10.1080/17451000.2022.2123521
Christian Polo, B. Moreno, Yessenia Arroyo, B. Cóndor-Luján
ABSTRACT The warm temperate South-east Pacific coast hosts extensive kelp forests that provide protected habitats to benthic organisms such as sponges. To soundly understand the interactions between kelps and sponges, a prior taxonomic identification of the associated species is necessary. This study aimed to report cryptic sponges found associated with the inner walls of the holdfast of the kelp Lessonia trabeculata, opportunistically collected in the upwelling area of San Juan de Marcona (15°S, Peru). Three sponges were identified including one Calcarea, Clathrina antofagastensis, and two Demospongiae, Johannesia reticulosa and Haliclona (Halichoclona) paracas. None of them was previously known to occur associated with kelps. These findings highlight the importance of exploring these less-studied (biogenic) substrates to uncover hidden marine biodiversity and the need for observational or experimental studies addressing the interactions developed between kelps and their epiphytozoans.
暖温带的东南太平洋海岸拥有广阔的海带森林，为海绵等底栖生物提供了受保护的栖息地。为了更好地了解海带和海绵之间的相互作用，有必要先对相关物种进行分类鉴定。本研究旨在报道在San Juan de Marcona(15°S，秘鲁)上升流区偶然收集到的与小梁海带(Lessonia trabeculata)支架内壁相关的隐性海绵。鉴定出3种海绵，包括一种Calcarea (Clathrina antofagastensis)和两种demospongisa (Johannesia reticulosa)和Haliclona (Halichoclona) paracas。以前人们都不知道它们与海带有关。这些发现强调了探索这些研究较少的(生物源)底物以揭示隐藏的海洋生物多样性的重要性，以及对海带与其表层动物之间相互作用进行观察或实验研究的必要性。
{"title":"On some cryptic sponges associated with Lessonia trabeculata holdfasts in the South-eastern Pacific","authors":"Christian Polo, B. Moreno, Yessenia Arroyo, B. Cóndor-Luján","doi":"10.1080/17451000.2022.2123521","DOIUrl":"https://doi.org/10.1080/17451000.2022.2123521","url":null,"abstract":"ABSTRACT The warm temperate South-east Pacific coast hosts extensive kelp forests that provide protected habitats to benthic organisms such as sponges. To soundly understand the interactions between kelps and sponges, a prior taxonomic identification of the associated species is necessary. This study aimed to report cryptic sponges found associated with the inner walls of the holdfast of the kelp Lessonia trabeculata, opportunistically collected in the upwelling area of San Juan de Marcona (15°S, Peru). Three sponges were identified including one Calcarea, Clathrina antofagastensis, and two Demospongiae, Johannesia reticulosa and Haliclona (Halichoclona) paracas. None of them was previously known to occur associated with kelps. These findings highlight the importance of exploring these less-studied (biogenic) substrates to uncover hidden marine biodiversity and the need for observational or experimental studies addressing the interactions developed between kelps and their epiphytozoans.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"326 - 334"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47620064","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 : 2022-07-03DOI: 10.1080/17451000.2022.2131823
G. Sathyamoorthy, Thiruganasambandam Rajendran
ABSTRACT The present study aimed at investigating nitrogen stress-induced biochemical changes in the marine microalgae Chlorella salina. The algae were grown in N free medium (N − ) in order to study the proximate composition via the determination of protein, lipid and carbohydrate. The chemical constituents of this algae were determined using GC-MS and mineral content was analysed using Inductive Coupled Plasma-Mass Spectrometry (ICP-MS). From the results, the proximate analysis showed increased lipid (34.77 ± 0.6%), followed by carbohydrate (26.21 ± 0.2%) and protein (5.4% dry weight). The chemical constituents of C. salina were successively extracted with diethyl ether, hexane, chloroform, acetone and methanol. The extract percentage varied greatly between various solvents, with the highest one (4.68%) recorded for methanol. A total of 35 compounds were identified from the extracts and the identified chemical groups included ketones, terpenes, fatty acids (FA), fatty alcohols and esters derived fatty acids and/or dicarboxylic acid and hydrocarbons. The methanol extract consisted of FA (35%), amino acids and N-containing metabolites (7%), fatty alcohols (8%), organic acids (3%) and hydrocarbons (80%). The algae exhibited high amounts of Mg (54.079 mg/50 g) followed by C (17.341 mg/50 g), S (5.702 mg/50 g) and Na (3.275 mg/50 g). These results demonstrated a strong correlation between the nitrogen content and lipid accumulation, hence showing that Chlorella salina could serve as a potential candidate for biodiesel production.
{"title":"Growth and biochemical profiling of marine microalgae Chlorella salina with response to nitrogen starvation","authors":"G. Sathyamoorthy, Thiruganasambandam Rajendran","doi":"10.1080/17451000.2022.2131823","DOIUrl":"https://doi.org/10.1080/17451000.2022.2131823","url":null,"abstract":"ABSTRACT The present study aimed at investigating nitrogen stress-induced biochemical changes in the marine microalgae Chlorella salina. The algae were grown in N free medium (N − ) in order to study the proximate composition via the determination of protein, lipid and carbohydrate. The chemical constituents of this algae were determined using GC-MS and mineral content was analysed using Inductive Coupled Plasma-Mass Spectrometry (ICP-MS). From the results, the proximate analysis showed increased lipid (34.77 ± 0.6%), followed by carbohydrate (26.21 ± 0.2%) and protein (5.4% dry weight). The chemical constituents of C. salina were successively extracted with diethyl ether, hexane, chloroform, acetone and methanol. The extract percentage varied greatly between various solvents, with the highest one (4.68%) recorded for methanol. A total of 35 compounds were identified from the extracts and the identified chemical groups included ketones, terpenes, fatty acids (FA), fatty alcohols and esters derived fatty acids and/or dicarboxylic acid and hydrocarbons. The methanol extract consisted of FA (35%), amino acids and N-containing metabolites (7%), fatty alcohols (8%), organic acids (3%) and hydrocarbons (80%). The algae exhibited high amounts of Mg (54.079 mg/50 g) followed by C (17.341 mg/50 g), S (5.702 mg/50 g) and Na (3.275 mg/50 g). These results demonstrated a strong correlation between the nitrogen content and lipid accumulation, hence showing that Chlorella salina could serve as a potential candidate for biodiesel production.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"307 - 314"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46662369","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 : 2022-07-03DOI: 10.1080/17451000.2022.2119251
Rodrigo Augusto Moreno-Santos, M. Condini, L. L. Almeida, M. Soeth, Á. Bertoncini, M. Hostim-Silva
ABSTRACT The Atlantic goliath grouper Epinephelus itajara is the largest grouper in the Atlantic Ocean, currently classified as vulnerable by IUCN red list. The present study aimed to assess the occurrence of juvenile Atlantic goliath grouper in a tropical estuary on the southeastern Brazilian coast. The sample collections were performed from April to November 2015 and from March 2018 to October 2019. A total of 265 juveniles ranging from 5.4–50.5 cm were sampled, from which 148 individuals were tagged using pit tags. Seventeen (11.5%) of the total tagged individuals were recaptured at least once over time, with two specimens recaptured on two different occasions. Some recaptures occurred in less than a week, while others occurred after six months. The length–weight-relationship of all juveniles resulted in a negative allometric growth pattern. These findings suggest that the estuary represents a suitable and important habitat for juvenile Atlantic goliath grouper.
{"title":"Unveiling the first steps of juvenile Atlantic goliath grouper Epinephelus itajara (Perciformes: Epinephelidae) in a tropical estuary at the southwestern Atlantic coast","authors":"Rodrigo Augusto Moreno-Santos, M. Condini, L. L. Almeida, M. Soeth, Á. Bertoncini, M. Hostim-Silva","doi":"10.1080/17451000.2022.2119251","DOIUrl":"https://doi.org/10.1080/17451000.2022.2119251","url":null,"abstract":"ABSTRACT The Atlantic goliath grouper Epinephelus itajara is the largest grouper in the Atlantic Ocean, currently classified as vulnerable by IUCN red list. The present study aimed to assess the occurrence of juvenile Atlantic goliath grouper in a tropical estuary on the southeastern Brazilian coast. The sample collections were performed from April to November 2015 and from March 2018 to October 2019. A total of 265 juveniles ranging from 5.4–50.5 cm were sampled, from which 148 individuals were tagged using pit tags. Seventeen (11.5%) of the total tagged individuals were recaptured at least once over time, with two specimens recaptured on two different occasions. Some recaptures occurred in less than a week, while others occurred after six months. The length–weight-relationship of all juveniles resulted in a negative allometric growth pattern. These findings suggest that the estuary represents a suitable and important habitat for juvenile Atlantic goliath grouper.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"372 - 379"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48761817","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 : 2022-07-03DOI: 10.1080/17451000.2022.2126857
K. Seyhan, Ömerhan Dürrani, A. Şahin, Y. Terzi
ABSTRACT Despite the importance of Rapana fisheries in the Black Sea region, few studies have focused on the non-target species, and determined discard rates from hauls on the deck, with no data on organisms that entered and subsequently escaped the fishing net during the dredge fishing. Rapana venosa is harvested along the entire coast of the Black Sea using dredging or beam-trawl fishing. This study adopted the cover net method to assess the composition and proportion of non-target escapees in Rapana fisheries by dredging along the western coast of the Black Sea. In this method, the dredge net bag (codend net) is covered with a second net bag that has a smaller mesh size to retain those individuals escaping from the dredge net bag. Up to 87% of the total ∼1.4×106 individuals per km (ind. km−2) cover net catches belonged to non-target species. Overall, 24 non-target species were caught in the cover net, with 46% of species belonging to the Teleostei (mostly flatfishes), 21% Malacostraca, 17% Bivalvia, 8% Gastropoda, 4% Amphibia, and 4% Ascidiacea. On the other hand, up to 6.8% of the total ∼0.16×106 ind. km−2 catches of the codend net (dredge net) belonged to non-target species. Compared to the cover net, a total of seven non-target species were retained in the codend net, and six of them belonged to Bivalvia. This study demonstrated an apparent negative impact of Rapana fisheries, particularly on escapees that often go unaccounted for their vulnerability to stress and physical damage.
{"title":"Catch composition of non-target species escaping dredge gear of Rapana fisheries in the western coast of the Black Sea","authors":"K. Seyhan, Ömerhan Dürrani, A. Şahin, Y. Terzi","doi":"10.1080/17451000.2022.2126857","DOIUrl":"https://doi.org/10.1080/17451000.2022.2126857","url":null,"abstract":"ABSTRACT Despite the importance of Rapana fisheries in the Black Sea region, few studies have focused on the non-target species, and determined discard rates from hauls on the deck, with no data on organisms that entered and subsequently escaped the fishing net during the dredge fishing. Rapana venosa is harvested along the entire coast of the Black Sea using dredging or beam-trawl fishing. This study adopted the cover net method to assess the composition and proportion of non-target escapees in Rapana fisheries by dredging along the western coast of the Black Sea. In this method, the dredge net bag (codend net) is covered with a second net bag that has a smaller mesh size to retain those individuals escaping from the dredge net bag. Up to 87% of the total ∼1.4×106 individuals per km (ind. km−2) cover net catches belonged to non-target species. Overall, 24 non-target species were caught in the cover net, with 46% of species belonging to the Teleostei (mostly flatfishes), 21% Malacostraca, 17% Bivalvia, 8% Gastropoda, 4% Amphibia, and 4% Ascidiacea. On the other hand, up to 6.8% of the total ∼0.16×106 ind. km−2 catches of the codend net (dredge net) belonged to non-target species. Compared to the cover net, a total of seven non-target species were retained in the codend net, and six of them belonged to Bivalvia. This study demonstrated an apparent negative impact of Rapana fisheries, particularly on escapees that often go unaccounted for their vulnerability to stress and physical damage.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"347 - 360"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48067239","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 : 2022-07-03DOI: 10.1080/17451000.2022.2123523
A. Eryaşar
ABSTRACT In this study, a grid-net design (GND) with three different bar spacings was compared with the commercial beam trawl used in the veined rapa whelk fishery to minimize the discarded catch amount and the loss of commercial product. In addition, the damage and mortality rates of the species that entered the tested fishing gear were determined to understand whether the tested fishing gear has a possible negative effect on benthic species. In the grid-net design, a rectangular metallic grid positioned 6 cm off the ground substituted half of the codend to allow the escape of discard species. Sea trials were carried out in the south-eastern Black Sea between 13 and 24 October 2021. Results showed that the discarded catch amount was significantly reduced by each GND (P < 0.05). Compared with the commercial fishing gear, the reductions in the discarded catch amounts (in terms of number) were 91.6%, 92.2%, and 95.0% for 22, 25, and 28 mm GNDs, respectively. The minimum commercial product loss was determined at 22 mm GND. In addition, it was seen that each GND compared to commercial gear caused statistically significantly less damage and mortality on the discarded species. In conclusion, 22 mm GND was the most successful design among the tested gears in minimizing commercial product loss and reducing the discarded catch amount. Recommendations are given for this design to be adopted by the commercial fleet.
摘要在本研究中，将三种不同间距的网格网设计（GND）与脉纹雷帕螺渔业中使用的商业束拖网进行了比较，以最大限度地减少丢弃的渔获量和商业产品的损失。此外，还确定了进入测试渔具的物种的损害率和死亡率，以了解测试渔具是否可能对底栖物种产生负面影响。在网格网设计中，矩形金属网格位于6 离地厘米的地方取代了一半的codend，以允许废弃物种逃跑。2021年10月13日至24日在黑海东南部进行了海上试验。结果表明，每种GND都能显著减少废弃渔获物的数量（P < 与商业渔具相比，22、25和28号渔具的丢弃渔获量（以数量计）分别减少了91.6%、92.2%和95.0% mm GND。最小商业产品损失确定为22 mm接地。此外，可以看出，与商用齿轮相比，每个GND对废弃物种造成的损害和死亡率在统计上显著降低。总之，22 mm GND是测试齿轮中在最大限度地减少商业产品损失和减少丢弃捕获量方面最成功的设计。建议商业车队采用该设计。
{"title":"Grid-net design that successfully reduces discarded catch and damage to benthic species in the veined rapa whelk beam trawl fishery","authors":"A. Eryaşar","doi":"10.1080/17451000.2022.2123523","DOIUrl":"https://doi.org/10.1080/17451000.2022.2123523","url":null,"abstract":"ABSTRACT In this study, a grid-net design (GND) with three different bar spacings was compared with the commercial beam trawl used in the veined rapa whelk fishery to minimize the discarded catch amount and the loss of commercial product. In addition, the damage and mortality rates of the species that entered the tested fishing gear were determined to understand whether the tested fishing gear has a possible negative effect on benthic species. In the grid-net design, a rectangular metallic grid positioned 6 cm off the ground substituted half of the codend to allow the escape of discard species. Sea trials were carried out in the south-eastern Black Sea between 13 and 24 October 2021. Results showed that the discarded catch amount was significantly reduced by each GND (P < 0.05). Compared with the commercial fishing gear, the reductions in the discarded catch amounts (in terms of number) were 91.6%, 92.2%, and 95.0% for 22, 25, and 28 mm GNDs, respectively. The minimum commercial product loss was determined at 22 mm GND. In addition, it was seen that each GND compared to commercial gear caused statistically significantly less damage and mortality on the discarded species. In conclusion, 22 mm GND was the most successful design among the tested gears in minimizing commercial product loss and reducing the discarded catch amount. Recommendations are given for this design to be adopted by the commercial fleet.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"335 - 346"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44196853","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 : 2022-07-03DOI: 10.1080/17451000.2022.2131824
Adnan H M Alhajji, H. Hsu, Y. Alkhamis, A. Alsaqufi, S. Ajmal Khan, Zahid Nazeer
ABSTRACT The Arabian carpet shark, Chiloscyllium arabicum is endemic to the Arabian Gulf and the northern Arabian Sea. The aim of this work is to study the reproduction and maturity of this species. A total of 87 males and 139 females, including 19 egg-bearing individuals collected from bottom set longline fisheries in the Saudi Arabian waters of the Arabian Gulf between October 2017 and February 2019, were examined. The size at 50% maturity was estimated as 62.3 and 62.5 cm total length (TL) for males and females, respectively. Changes in the gonadosomatic index (GSI) of males indicated the mating to happen between December and February. The maximum follicle diameter, oviducal gland width and GSI in mature females, suggested the ovulation to extend from September to May with the peak during March–May. Females carried 2–4 egg cases in the uteri, and the egg-laying period was between February and May. The segregation of sexes was observed in the larger (70–80 cm TL) size ranges.
阿拉伯地毯鲨是阿拉伯湾和阿拉伯海北部的特有物种。这项工作的目的是研究该物种的繁殖和成熟度。对2017年10月至2019年2月期间在阿拉伯湾沙特阿拉伯水域采集的87只雄性和139只雌性进行了检查，其中包括19只产卵个体。50%成熟度时，雄性和雌性的体型估计分别为62.3厘米和62.5厘米。雄性性腺小体指数（GSI）的变化表明交配发生在12月至2月之间。成熟雌性卵泡的最大直径、性腺宽度和GSI表明排卵期从9月延长到5月，最高峰在3月至5月。雌性在子宫中携带2-4个卵子，产卵期在2月至5月之间。在较大（70-80 cm TL）的尺寸范围内观察到性别分离。
{"title":"Maturity and reproduction in the Arabian carpet shark, Chiloscyllium arabicum from the Saudi Arabian waters of the Arabian Gulf","authors":"Adnan H M Alhajji, H. Hsu, Y. Alkhamis, A. Alsaqufi, S. Ajmal Khan, Zahid Nazeer","doi":"10.1080/17451000.2022.2131824","DOIUrl":"https://doi.org/10.1080/17451000.2022.2131824","url":null,"abstract":"ABSTRACT The Arabian carpet shark, Chiloscyllium arabicum is endemic to the Arabian Gulf and the northern Arabian Sea. The aim of this work is to study the reproduction and maturity of this species. A total of 87 males and 139 females, including 19 egg-bearing individuals collected from bottom set longline fisheries in the Saudi Arabian waters of the Arabian Gulf between October 2017 and February 2019, were examined. The size at 50% maturity was estimated as 62.3 and 62.5 cm total length (TL) for males and females, respectively. Changes in the gonadosomatic index (GSI) of males indicated the mating to happen between December and February. The maximum follicle diameter, oviducal gland width and GSI in mature females, suggested the ovulation to extend from September to May with the peak during March–May. Females carried 2–4 egg cases in the uteri, and the egg-laying period was between February and May. The segregation of sexes was observed in the larger (70–80 cm TL) size ranges.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"361 - 371"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49653022","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 : 2022-07-03DOI: 10.1080/17451000.2022.2119252
W. Magalhães, V. D. de Oliveira, J. Bailey–Brock
ABSTRACT The two endemic Hawaiian phyllodocid species Phyllodoce hawaiia (Hartman, 1966) and P. hiatti Hartman, 1966 are only known from the original description. A redescription based upon type material helped clarify the taxonomic status of these species and to confirm the synonym of Prophyllodoce Hartman, 1966 with Phyllodoce Lamarck, 1818. Phyllodoce hawaiia is characterized by having a strongly cordate prostomium, proximal region of proboscis with 20 rows of round papillae and distal region with six longitudinal rows of tubercles, tentacular cirri with short and ringed cirrophores and long cirrostyles and parapodial prechaetal lobes bilobed and asymmetrical. Phyllodoce hiatti has an oval prostomium, papillae diffusely distributed in proximal region of proboscis, tentacular cirri with well-developed cirrophores, prechaetal lobes bilobed, round and symmetrical and rounded dorsal cirri.
{"title":"Redescription of two Phyllodoce (Annelida: Phyllodocidae) species from Hawaii","authors":"W. Magalhães, V. D. de Oliveira, J. Bailey–Brock","doi":"10.1080/17451000.2022.2119252","DOIUrl":"https://doi.org/10.1080/17451000.2022.2119252","url":null,"abstract":"ABSTRACT The two endemic Hawaiian phyllodocid species Phyllodoce hawaiia (Hartman, 1966) and P. hiatti Hartman, 1966 are only known from the original description. A redescription based upon type material helped clarify the taxonomic status of these species and to confirm the synonym of Prophyllodoce Hartman, 1966 with Phyllodoce Lamarck, 1818. Phyllodoce hawaiia is characterized by having a strongly cordate prostomium, proximal region of proboscis with 20 rows of round papillae and distal region with six longitudinal rows of tubercles, tentacular cirri with short and ringed cirrophores and long cirrostyles and parapodial prechaetal lobes bilobed and asymmetrical. Phyllodoce hiatti has an oval prostomium, papillae diffusely distributed in proximal region of proboscis, tentacular cirri with well-developed cirrophores, prechaetal lobes bilobed, round and symmetrical and rounded dorsal cirri.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"409 - 414"},"PeriodicalIF":1.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46074724","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 : 2022-04-21DOI: 10.1080/17451000.2022.2119250
Aishee Bhowal, Alfisa Siddique, J. Purushothaman, Sanu V. Francis, C. Raghunathan
ABSTRACT Protoraphis hustedtiana R. Simonsen, 1970 is reported to be epibiontic on the calanoid copepod Pontella andersoni Sewell, 1912. Observed in the northern coastal waters of Bay of Bengal, Indian Ocean during the winter monsoon, this diatom has been found attached to its basibiont host copepod P. andersoni. With this report, the araphid diatom P. hustedtiana extends its biogeographic distribution to the Bay of Bengal (BoB), from where it had not been recorded prior to this study.
据报道，Protoraphis hustedtiana R. Simonsen, 1970在类鱿鱼桡足动物Pontella andersoni上是表生的。Sewell, 1912。在冬季季风期间在印度洋孟加拉湾北部沿海水域观察到，这种硅藻被发现附着在它的基础寄主桡足类安德氏藻上。通过本报告，甲壳硅藻P. hustedtiana将其生物地理分布范围扩展到孟加拉湾(BoB)，在此研究之前没有记录到它。
{"title":"First report of an epibiontic diatom Protoraphis hustedtiana R. Simonsen, 1970 (Protoraphidaceae) in association with copepod Pontella andersoni Sewell, 1912 from northern coastal waters of Bay of Bengal, Indian Ocean","authors":"Aishee Bhowal, Alfisa Siddique, J. Purushothaman, Sanu V. Francis, C. Raghunathan","doi":"10.1080/17451000.2022.2119250","DOIUrl":"https://doi.org/10.1080/17451000.2022.2119250","url":null,"abstract":"ABSTRACT Protoraphis hustedtiana R. Simonsen, 1970 is reported to be epibiontic on the calanoid copepod Pontella andersoni Sewell, 1912. Observed in the northern coastal waters of Bay of Bengal, Indian Ocean during the winter monsoon, this diatom has been found attached to its basibiont host copepod P. andersoni. With this report, the araphid diatom P. hustedtiana extends its biogeographic distribution to the Bay of Bengal (BoB), from where it had not been recorded prior to this study.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"222 - 229"},"PeriodicalIF":1.1,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47354172","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 : 2022-04-21DOI: 10.1080/17451000.2022.2086702
Elmahjoub Gallouli, H. Oulad Ali, Mohamed El Hafa, A. Aamiri
ABSTRACT This study was carried out between April 2014 and March 2016. We counted 233 species dominated by diatoms (126 species) and dinoflagellates (97 species). The most common diatom species were Leptocylindrus danicus and Rhizosolenia styliformus, while Scrippsiella sp. was the most common dinoflagellate species. The richness and relative abundance of diatoms were greater during the spring of 2014–2015 and the winter of 2015 and present an increasing north–south gradient. However, those of dinoflagellates were greater during the summer and autumn seasons of the years 2014–2015 and the winter of 2016, with a decreasing north–south gradient. This could be mainly related to the difference between the requirements of these two groups and the spatiotemporal variability of the physicochemical characteristics of the waters governed by seasonal and inter-annual variations of the currents, by the floods and by the morphology of the coast in this area. Indeed, the increase in the richness and abundance of dinoflagellates coincides with the increase in temperature, transparency and the decrease in the concentration of nutrient salts in the environment. However, the increase in nutrient content, the decrease in temperature and transparency favours diatoms compared with dinoflagellates.
{"title":"Spatiotemporal variability of phytoplankton in the Aglou-Sidi Ifni coastline (Moroccan Atlantic Coast)","authors":"Elmahjoub Gallouli, H. Oulad Ali, Mohamed El Hafa, A. Aamiri","doi":"10.1080/17451000.2022.2086702","DOIUrl":"https://doi.org/10.1080/17451000.2022.2086702","url":null,"abstract":"ABSTRACT This study was carried out between April 2014 and March 2016. We counted 233 species dominated by diatoms (126 species) and dinoflagellates (97 species). The most common diatom species were Leptocylindrus danicus and Rhizosolenia styliformus, while Scrippsiella sp. was the most common dinoflagellate species. The richness and relative abundance of diatoms were greater during the spring of 2014–2015 and the winter of 2015 and present an increasing north–south gradient. However, those of dinoflagellates were greater during the summer and autumn seasons of the years 2014–2015 and the winter of 2016, with a decreasing north–south gradient. This could be mainly related to the difference between the requirements of these two groups and the spatiotemporal variability of the physicochemical characteristics of the waters governed by seasonal and inter-annual variations of the currents, by the floods and by the morphology of the coast in this area. Indeed, the increase in the richness and abundance of dinoflagellates coincides with the increase in temperature, transparency and the decrease in the concentration of nutrient salts in the environment. However, the increase in nutrient content, the decrease in temperature and transparency favours diatoms compared with dinoflagellates.","PeriodicalId":18195,"journal":{"name":"Marine Biology Research","volume":"18 1","pages":"203 - 214"},"PeriodicalIF":1.1,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47434309","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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