Pub Date : 2023-04-03DOI: 10.1080/13235818.2023.2217677
S. Nowland, B. Roberts
ABSTRACT The blacklip rock oyster, Saccostrea lineage J, has the potential to support new aquaculture developments throughout its range in the tropical Indo-Pacific region, but lack of research investment in understanding basic biology has been a key failure point in the past. This study assessed Saccostrea lineage J spat growth and survival in downweller and upweller nursery systems, with the aim of establishing baseline biological information and evaluating spat performance to support commercialisation efforts. Downweller and upweller nursery systems were similarly effective at rearing spat, with mean dorsoventral measurement in both systems reaching a 5 mm deployment size at 59 days post hatch. Growth rates reported in this study of 0.19 and 0.20 mm day−1 in the downweller and upweller, respectively, are comparable to other hatchery-produced tropical and subtropical bivalve spat. Based on the results of this study, it is recommended that spat be held in nurseries for approximately two months to reach a 5 mm deployment size. The information obtained in this study is the first documentation of Saccostrea lineage J spat growth and survival, and the methods used provide a basis for commercial production of this species.
摘要黑唇岩牡蛎，Saccostrea谱系J，有潜力支持热带印度-太平洋地区新的水产养殖发展，但缺乏对基础生物学的研究投资一直是过去的一个关键失败点。本研究评估了Saccostrea谱系J唾沫在下向和上向苗圃系统中的生长和存活，目的是建立基线生物信息并评估唾沫的表现，以支持商业化努力。下行式和上行式育婴系统在饲养吐口水方面同样有效，两个系统的平均背腔测量值均达到5 孵化后59天部署尺寸为mm。本研究报告的增长率分别为0.19和0.20 mm day−1，与其他孵化场生产的热带和亚热带双壳类幼体相当。根据这项研究的结果，建议在托儿所进行大约两个月的吐口水，以达到5 mm部署尺寸。本研究中获得的信息是首次记录Saccotrea谱系J的生长和存活，所使用的方法为该物种的商业生产提供了基础。
{"title":"Assessment of blacklip rock oyster, Saccostrea lineage J, spat growth and survival in recirculating upweller and downweller nursery systems","authors":"S. Nowland, B. Roberts","doi":"10.1080/13235818.2023.2217677","DOIUrl":"https://doi.org/10.1080/13235818.2023.2217677","url":null,"abstract":"ABSTRACT The blacklip rock oyster, Saccostrea lineage J, has the potential to support new aquaculture developments throughout its range in the tropical Indo-Pacific region, but lack of research investment in understanding basic biology has been a key failure point in the past. This study assessed Saccostrea lineage J spat growth and survival in downweller and upweller nursery systems, with the aim of establishing baseline biological information and evaluating spat performance to support commercialisation efforts. Downweller and upweller nursery systems were similarly effective at rearing spat, with mean dorsoventral measurement in both systems reaching a 5 mm deployment size at 59 days post hatch. Growth rates reported in this study of 0.19 and 0.20 mm day−1 in the downweller and upweller, respectively, are comparable to other hatchery-produced tropical and subtropical bivalve spat. Based on the results of this study, it is recommended that spat be held in nurseries for approximately two months to reach a 5 mm deployment size. The information obtained in this study is the first documentation of Saccostrea lineage J spat growth and survival, and the methods used provide a basis for commercial production of this species.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"101 - 108"},"PeriodicalIF":1.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44096798","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 : 2023-04-03DOI: 10.1080/13235818.2023.2201904
İhsan Ekin
ABSTRACT The purpose of this study is to describe the reproductive processes of the snails Helix lucorum and Eobania vermiculata, which are abundant in Diyarbakır, SE Turkey. Reproductive behaviours and eggs of E. vermiculata and H. lucorum were monitored in the gardens of the Commodity Exchange Building, and Hevsel Gardens. The habitats of the species were observed over a one-year period (2022–2023). Helix lucorum reproduction takes place at the age of three to four years, from late October to December. The weight of the adult snails was 22 ± 4 g. The snails laid an average of 82 ± 12 eggs, with a weight of 0.23 ± 0.03 mg, and diameter of 5 mm; they hatched in 30 ± 4 days. Eobania vermiculata reproduction takes place at the age of two years, and breeding is mainly from early October to early December. The adult snails weighed 12 ± 4 g, and laid an average of 70 ± 14 eggs, with each egg weighing 0.16 ± 0.04 mg and measuring 3 mm in diameter. They hatched in 32 ± 5 days. In summary, the study offers details on the reproductive processes of two commercially significant snails, whose breeding habits may vary based on local climatic conditions.
{"title":"Reproductive processes of the edible snails Helix lucorum (Linnaeus, 1758) and Eobania vermiculata (O.F. Müller, 1774) in their natural habitats","authors":"İhsan Ekin","doi":"10.1080/13235818.2023.2201904","DOIUrl":"https://doi.org/10.1080/13235818.2023.2201904","url":null,"abstract":"ABSTRACT The purpose of this study is to describe the reproductive processes of the snails Helix lucorum and Eobania vermiculata, which are abundant in Diyarbakır, SE Turkey. Reproductive behaviours and eggs of E. vermiculata and H. lucorum were monitored in the gardens of the Commodity Exchange Building, and Hevsel Gardens. The habitats of the species were observed over a one-year period (2022–2023). Helix lucorum reproduction takes place at the age of three to four years, from late October to December. The weight of the adult snails was 22 ± 4 g. The snails laid an average of 82 ± 12 eggs, with a weight of 0.23 ± 0.03 mg, and diameter of 5 mm; they hatched in 30 ± 4 days. Eobania vermiculata reproduction takes place at the age of two years, and breeding is mainly from early October to early December. The adult snails weighed 12 ± 4 g, and laid an average of 70 ± 14 eggs, with each egg weighing 0.16 ± 0.04 mg and measuring 3 mm in diameter. They hatched in 32 ± 5 days. In summary, the study offers details on the reproductive processes of two commercially significant snails, whose breeding habits may vary based on local climatic conditions.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"138 - 143"},"PeriodicalIF":1.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42738307","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 : 2023-04-03DOI: 10.1080/13235818.2023.2202807
F. Köhler, D. Herbert, B. Rowson, G. Rosenberg
ABSTRACT The name Bulimus ovoideus Bruguière, 1789 is in current use for two different species, one from East Africa and one from the Philippines. The name has also been declared as the type species of both Edentulina Pfeiffer, 1856 (Streptaxidae) and Cochlostyla Férussac, 1821 (Camaenidae). We demonstrate that the use of this name for a Philippine camaenid is based on an early misidentification. To clarify the situation, we invoke Article 70.3 of the Code of Zoological Nomenclature, concerning misidentified type species, to select the taxonomic species actually involved, Bulinus luzonicus Sowerby I, 1833, as the type species of Cochlostyla. Cochlostyla thus becomes a senior objective synonym of Canistrum Mörch, 1852. Under Article 40.2 of the Code, Helicostylinae Ihering, 1909 takes precedence of Cochlostylinae Möllendorff, 1890. We further show that the Philippine camaenids Orthostylus Beck, 1837 and Dryocochlias Möllendorff, 1898 are objective synonyms with the former name having priority. Finally, we designate a neotype for Bulimus ovoideus to stabilise its taxonomy. These actions permit the current nomenclature to be maintained with a minimum of disruption. The currently accepted name of the taxon in question is Edentulina ovoidea (Bruguière, 1789).
{"title":"The double life of Bulimus ovoideus Bruguière, 1789: taxonomic implications for Streptaxidae and Camaenidae (Mollusca, Stylommatophora)","authors":"F. Köhler, D. Herbert, B. Rowson, G. Rosenberg","doi":"10.1080/13235818.2023.2202807","DOIUrl":"https://doi.org/10.1080/13235818.2023.2202807","url":null,"abstract":"ABSTRACT The name Bulimus ovoideus Bruguière, 1789 is in current use for two different species, one from East Africa and one from the Philippines. The name has also been declared as the type species of both Edentulina Pfeiffer, 1856 (Streptaxidae) and Cochlostyla Férussac, 1821 (Camaenidae). We demonstrate that the use of this name for a Philippine camaenid is based on an early misidentification. To clarify the situation, we invoke Article 70.3 of the Code of Zoological Nomenclature, concerning misidentified type species, to select the taxonomic species actually involved, Bulinus luzonicus Sowerby I, 1833, as the type species of Cochlostyla. Cochlostyla thus becomes a senior objective synonym of Canistrum Mörch, 1852. Under Article 40.2 of the Code, Helicostylinae Ihering, 1909 takes precedence of Cochlostylinae Möllendorff, 1890. We further show that the Philippine camaenids Orthostylus Beck, 1837 and Dryocochlias Möllendorff, 1898 are objective synonyms with the former name having priority. Finally, we designate a neotype for Bulimus ovoideus to stabilise its taxonomy. These actions permit the current nomenclature to be maintained with a minimum of disruption. The currently accepted name of the taxon in question is Edentulina ovoidea (Bruguière, 1789).","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"123 - 129"},"PeriodicalIF":1.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46118819","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 : 2023-04-03DOI: 10.1080/13235818.2023.2212413
Aleksandra Jaszczyńska, A. Osikowski, A. Falniowski, Sebastian Hofman
ABSTRACT Emmericia Brusina, 1870 is the only genus of the family Emmericiidae Brusina, 1870, and it inhabits springs and rivers from north-east Italy to southern Croatia, Bosnia and Herzegovina, and Montenegro. Their variable shells have resulted in taxonomic chaos with from one to sixty seven species recognised in Emmericia. Recently four species have been distinguished: E. patula (Brumati, 1838), E. expansilabris Bourguignat, 1881, E. narentana Bourguignat, 1881, and E. ventricosa Brusina, 1870. In the present study, Emmericia from 13 localities were collected. Principal component analysis on seven biometric characters measured on shells from three localities inhabited by two nominal species demonstrated the distinctiveness of these three studied populations. In contrast, the differences between the two populations representing E. patula were not smaller than between either of them and E. expansilabris. Similar remarks apply to the shells of the other two species. The sequences of the cytochrome oxidase subunit I did not confirm that E. expansilabris is a distinct species, so it is regarded as a synonym of E. patula, but did confirm the distinctness of E. ventricosa, which inhabits the localities higher above sea level. No sequences of E. narentana were obtained.
{"title":"Towards understanding of the taxonomy within the genus Emmericia Brusina, 1870 (Caenogastropoda: Truncatelloidea)","authors":"Aleksandra Jaszczyńska, A. Osikowski, A. Falniowski, Sebastian Hofman","doi":"10.1080/13235818.2023.2212413","DOIUrl":"https://doi.org/10.1080/13235818.2023.2212413","url":null,"abstract":"ABSTRACT Emmericia Brusina, 1870 is the only genus of the family Emmericiidae Brusina, 1870, and it inhabits springs and rivers from north-east Italy to southern Croatia, Bosnia and Herzegovina, and Montenegro. Their variable shells have resulted in taxonomic chaos with from one to sixty seven species recognised in Emmericia. Recently four species have been distinguished: E. patula (Brumati, 1838), E. expansilabris Bourguignat, 1881, E. narentana Bourguignat, 1881, and E. ventricosa Brusina, 1870. In the present study, Emmericia from 13 localities were collected. Principal component analysis on seven biometric characters measured on shells from three localities inhabited by two nominal species demonstrated the distinctiveness of these three studied populations. In contrast, the differences between the two populations representing E. patula were not smaller than between either of them and E. expansilabris. Similar remarks apply to the shells of the other two species. The sequences of the cytochrome oxidase subunit I did not confirm that E. expansilabris is a distinct species, so it is regarded as a synonym of E. patula, but did confirm the distinctness of E. ventricosa, which inhabits the localities higher above sea level. No sequences of E. narentana were obtained.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"109 - 122"},"PeriodicalIF":1.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48129528","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 : 2023-04-03DOI: 10.1080/13235818.2023.2214156
R. Braley
ABSTRACT Four giant clam species were monitored for population abundance, recruitment, growth and spatial distribution over three decades. Natural, undisturbed populations were mapped at five sites on the Great Barrier Reef from surveys in 1982–1986, 1987–1992, 2007–2009 and 2017. Populations of all species declined at three sites due to low recruitment and death of old clams. At two sites a significant juvenile recruitment cohort of Tridacna gigas and T. derasa followed a mass mortality event which returned the population to the pre-mass mortality abundance. At one site 55.5% of the cohort survived after five years. Population abundance of T. squamosa and Hippopus hippopus increased slightly at the 2017 survey at these two sites. Tridacna gigas and T. derasa live long enough to reproduce successfully in some years, as evidenced by recruitment. Where significant recruitment occurred, high-aggregation reproductive centres may remain functional for many decades. Individual growth rate from the recruitment surveys averaged six cm yr−1 to five years. Longer-term growth rates averaged nearly two cm yr−1 with the highest rate being over four cm yr−1. Climate change will have some deleterious effects on giant clam populations.
摘要对四种巨蚌的种群丰度、繁殖、生长和空间分布进行了30多年的监测。根据1982年至1986年、1987年至1992年、2007年至2009年和2017年的调查，在大堡礁的五个地点绘制了自然、未受干扰的种群地图。由于老蛤蜊的大量繁殖和死亡，三个地点的所有物种的数量都有所下降。在两个地点，在大规模死亡事件发生后，一个重要的巨型Tridacna gigas和T.derasa青少年招募队列将种群恢复到大规模死亡前的丰度。在一个地点，55.5%的队列在五年后存活。在2017年对这两个地点的调查中，鳞片T.squamosa和河马的种群丰度略有增加。巨型Tridacna gigas和T.derasa的寿命足以在几年内成功繁殖，招募就是明证。在大量招聘的地方，高聚集性生殖中心可能会在几十年内保持运作。招聘调查中的个人增长率平均为6厘米-年-1至5年。长期增长率平均接近2 cm yr−1，最高增长率超过4 cm yr–1。气候变化将对巨蚌种群产生一些有害影响。
{"title":"A population study of giant clams (Tridacninae) on the Great Barrier Reef over three-decades","authors":"R. Braley","doi":"10.1080/13235818.2023.2214156","DOIUrl":"https://doi.org/10.1080/13235818.2023.2214156","url":null,"abstract":"ABSTRACT Four giant clam species were monitored for population abundance, recruitment, growth and spatial distribution over three decades. Natural, undisturbed populations were mapped at five sites on the Great Barrier Reef from surveys in 1982–1986, 1987–1992, 2007–2009 and 2017. Populations of all species declined at three sites due to low recruitment and death of old clams. At two sites a significant juvenile recruitment cohort of Tridacna gigas and T. derasa followed a mass mortality event which returned the population to the pre-mass mortality abundance. At one site 55.5% of the cohort survived after five years. Population abundance of T. squamosa and Hippopus hippopus increased slightly at the 2017 survey at these two sites. Tridacna gigas and T. derasa live long enough to reproduce successfully in some years, as evidenced by recruitment. Where significant recruitment occurred, high-aggregation reproductive centres may remain functional for many decades. Individual growth rate from the recruitment surveys averaged six cm yr−1 to five years. Longer-term growth rates averaged nearly two cm yr−1 with the highest rate being over four cm yr−1. Climate change will have some deleterious effects on giant clam populations.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"77 - 95"},"PeriodicalIF":1.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47075619","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 : 2023-04-03DOI: 10.1080/13235818.2023.2211528
Abdelmajid El Khayari, E. Rour, Nabil Mzoudi
ABSTRACT The development of the heliciculture sector in Africa, particularly in Morocco, requires a better understanding of the environmental and nutritional growth conditions of endemic snails. To date, little is known about Otala tingitana snails, a Moroccan endemic edible species with a growing economic and agronomic interest. In this study, we investigated the optimal conditions for efficient snail growth. Experiments were carried out to track the growth of snails under controlled conditions of air temperature, humidity and photoperiod from hatching to maturity. In accordance with previous studies on other types of snails, weight, shell growth, dietary ingestion, ecological yield, mortality rate and maturation time were all monitored. Results showed that a combination of 20°C temperature, short photoperiod (8L-16D) and high humidity (80% RH) represents the optimal conditions for efficient growth of this species. Thus, thanks to the improved rearing conditions, two complete life cycles could be achieved within a single year. This allows for significant improvement in the productivity and the rearing conditions of this species for nutritional and other purposes.
{"title":"Tracking the growth of the edible Moroccan snail, Otala tingitana (Paladilhe, 1875), raised under controlled conditions","authors":"Abdelmajid El Khayari, E. Rour, Nabil Mzoudi","doi":"10.1080/13235818.2023.2211528","DOIUrl":"https://doi.org/10.1080/13235818.2023.2211528","url":null,"abstract":"ABSTRACT The development of the heliciculture sector in Africa, particularly in Morocco, requires a better understanding of the environmental and nutritional growth conditions of endemic snails. To date, little is known about Otala tingitana snails, a Moroccan endemic edible species with a growing economic and agronomic interest. In this study, we investigated the optimal conditions for efficient snail growth. Experiments were carried out to track the growth of snails under controlled conditions of air temperature, humidity and photoperiod from hatching to maturity. In accordance with previous studies on other types of snails, weight, shell growth, dietary ingestion, ecological yield, mortality rate and maturation time were all monitored. Results showed that a combination of 20°C temperature, short photoperiod (8L-16D) and high humidity (80% RH) represents the optimal conditions for efficient growth of this species. Thus, thanks to the improved rearing conditions, two complete life cycles could be achieved within a single year. This allows for significant improvement in the productivity and the rearing conditions of this species for nutritional and other purposes.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"144 - 151"},"PeriodicalIF":1.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43257278","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 : 2023-01-02DOI: 10.1080/13235818.2023.2183538
M. Murphy, M. Shea
ABSTRACT Coolah Tops is an isolated high elevation mesic refuge on the dry western slopes of the Great Dividing Range in New South Wales, eastern Australia. Field surveys of the land snail fauna of Coolah Tops National Park in 2000–2001 and 2018 sampled 28 sites between 556 and 1234 m elevation (Australian Height Datum). Over 1200 specimens in total were collected and were assigned to 29 species or morpho-species in six families. Seven taxa are currently known only from Coolah Tops. Preliminary assessment of five of these concluded they meet IUCN criteria for endangered status. The land snail community of the Coolah Tops highland area is threatened by anthropogenic climate change and is considered to be of outstanding conservation value.
{"title":"Survey and conservation assessment of the land snail fauna of Coolah Tops National Park in the Hunter Valley area of New South Wales, Australia","authors":"M. Murphy, M. Shea","doi":"10.1080/13235818.2023.2183538","DOIUrl":"https://doi.org/10.1080/13235818.2023.2183538","url":null,"abstract":"ABSTRACT Coolah Tops is an isolated high elevation mesic refuge on the dry western slopes of the Great Dividing Range in New South Wales, eastern Australia. Field surveys of the land snail fauna of Coolah Tops National Park in 2000–2001 and 2018 sampled 28 sites between 556 and 1234 m elevation (Australian Height Datum). Over 1200 specimens in total were collected and were assigned to 29 species or morpho-species in six families. Seven taxa are currently known only from Coolah Tops. Preliminary assessment of five of these concluded they meet IUCN criteria for endangered status. The land snail community of the Coolah Tops highland area is threatened by anthropogenic climate change and is considered to be of outstanding conservation value.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"61 - 73"},"PeriodicalIF":1.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43840314","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 : 2023-01-02DOI: 10.1080/13235818.2023.2191154
S. Dixit, N. Yonow, Vishnu K. Venugopal, H. Manjebrayakath, N. Saravanane
ABSTRACT The current study presents the first molecular data of three species of the family Phyllidiidae, Phyllidia ocellata, Phyllidia alyta and Phyllidiella rosans, from Indian waters. The P. ocellata molecular sequences closely match those available from the Pacific Ocean, whereas P. alyta and P. rosans form independent clades, confirming their identifications as distinct species. Phyllidia ocellata, frequently found in the Indo-Pacific tropical coral reefs, is renowned for its wide range of colours and external forms. Numerous variations have been found and are being examined at the molecular level, and the subject of this study is another variation that, until dissection and molecular analysis, was thought to be a colour form of Phyllidia multituberculata. Although India has a long history of heterobranch research, no phyllidiid species from Indian waters have ever been the subject of molecular research.
{"title":"The curious case of Phyllidia ocellata and the first molecular data of three phyllidiid species from India (Gastropoda, Heterobranchia, Phyllidiidae)","authors":"S. Dixit, N. Yonow, Vishnu K. Venugopal, H. Manjebrayakath, N. Saravanane","doi":"10.1080/13235818.2023.2191154","DOIUrl":"https://doi.org/10.1080/13235818.2023.2191154","url":null,"abstract":"ABSTRACT The current study presents the first molecular data of three species of the family Phyllidiidae, Phyllidia ocellata, Phyllidia alyta and Phyllidiella rosans, from Indian waters. The P. ocellata molecular sequences closely match those available from the Pacific Ocean, whereas P. alyta and P. rosans form independent clades, confirming their identifications as distinct species. Phyllidia ocellata, frequently found in the Indo-Pacific tropical coral reefs, is renowned for its wide range of colours and external forms. Numerous variations have been found and are being examined at the molecular level, and the subject of this study is another variation that, until dissection and molecular analysis, was thought to be a colour form of Phyllidia multituberculata. Although India has a long history of heterobranch research, no phyllidiid species from Indian waters have ever been the subject of molecular research.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"34 - 49"},"PeriodicalIF":1.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45777041","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 : 2023-01-02DOI: 10.1080/13235818.2023.2179850
F. Ceccolini, F. Cianferoni
ABSTRACT Three junior homonyms are found within the genera of fossil Cephalopoda and the following replacement names are proposed: Nautilaphractus Ceccolini and Cianferoni nom. nov. = Aphractus Shimansky, 1967 nec Redtenbacher in Brunner von Wattenwyl, 1895; Uralharuspex Ceccolini and Cianferoni nom. nov. = Haruspex Shimansky, 1968 nec Thomson, 1864. Accordingly, two new combinations (comb. nov.) are made. Furthermore, the genus group name Plesioturrilites Breistroffer, 1953 is revalidated. urn:lsid:zoobank.org:pub:9143E1C6-68F5-4FC1-BB1D-5F300B89ADC4
摘要在头足类化石属中发现了三个初级同音异义词，并提出了以下替代名称：Nautilaphractus Ceccolini和Cianferoni nom。十一月 = Aphractus Shimansky，1967 nec Redtenbacher in Brunner von Wattenwyl，1895；Uralharusspex Ceccolini和Cianferoni（化名）。十一月 = Haruspex Shimansky，1968年nec Thomson，1864年。因此，产生了两个新的组合（comb.nov.）。此外，1953年的属群名称Plesioturrilites Breistrover被重新验证。urn:lsid:zoobank.org/pub:9143E1C6-68F5-4FC1-BB1D-5F300B89ADC4
{"title":"Nomenclatural changes in fossil cephalopods (Mollusca: Cephalopoda)","authors":"F. Ceccolini, F. Cianferoni","doi":"10.1080/13235818.2023.2179850","DOIUrl":"https://doi.org/10.1080/13235818.2023.2179850","url":null,"abstract":"ABSTRACT Three junior homonyms are found within the genera of fossil Cephalopoda and the following replacement names are proposed: Nautilaphractus Ceccolini and Cianferoni nom. nov. = Aphractus Shimansky, 1967 nec Redtenbacher in Brunner von Wattenwyl, 1895; Uralharuspex Ceccolini and Cianferoni nom. nov. = Haruspex Shimansky, 1968 nec Thomson, 1864. Accordingly, two new combinations (comb. nov.) are made. Furthermore, the genus group name Plesioturrilites Breistroffer, 1953 is revalidated. urn:lsid:zoobank.org:pub:9143E1C6-68F5-4FC1-BB1D-5F300B89ADC4","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"1 - 3"},"PeriodicalIF":1.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45228073","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 : 2023-01-02DOI: 10.1080/13235818.2023.2189428
Sheng-Tai Hsiao, S. Chuang
ABSTRACT This paper describes a new Asian hard clam, Meretrix taiwanica sp. n., found in the Tamsui River estuary in northern Taiwan. This species was formerly identified as M. lusoria, and was considered to be a descendant of a clam that originated in Japan. A molecular phylogenetic analysis, however, demonstrated that Meretrix taiwanica sp. n. is closely related to M. petechialis and M. lusoria. Meretrix taiwanica is distinguished by its smaller socket width and shorter posterior dorsal margin. This species is distributed throughout the coast of Taiwan on the southern coast of China.
{"title":"Meretrix taiwanica (Bivalvia: Veneridae), a previously misidentified new species in Taiwan","authors":"Sheng-Tai Hsiao, S. Chuang","doi":"10.1080/13235818.2023.2189428","DOIUrl":"https://doi.org/10.1080/13235818.2023.2189428","url":null,"abstract":"ABSTRACT\u0000 This paper describes a new Asian hard clam, Meretrix taiwanica sp. n., found in the Tamsui River estuary in northern Taiwan. This species was formerly identified as M. lusoria, and was considered to be a descendant of a clam that originated in Japan. A molecular phylogenetic analysis, however, demonstrated that Meretrix taiwanica sp. n. is closely related to M. petechialis and M. lusoria. Meretrix taiwanica is distinguished by its smaller socket width and shorter posterior dorsal margin. This species is distributed throughout the coast of Taiwan on the southern coast of China.","PeriodicalId":18857,"journal":{"name":"Molluscan Research","volume":"43 1","pages":"12 - 21"},"PeriodicalIF":1.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46515421","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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