Pub Date : 2024-07-26DOI: 10.1017/s0025315424000511
Darya D. Golubinskaya, Svetlana N. Sharina, Olga M. Korn, Natalia A. Arbuzova
In Peter the Great Bay (Russian waters of the Sea of Japan), rhizocephalan barnacle Peltogaster lineata Shiino, 1943, a common parasite of the hermit crab Pagurus brachiomastus (Thallwitz, 1891), was founded for the first time on the hermit crab Pagurus middendorffii Brandt, 1851 (Anomura: Paguridae). Taxonomical identification of the parasite was made using morphological and molecular methods. Pagurus middendorffii is the sixth host of P. lineata.
{"title":"The first record of the parasite Peltogaster lineata (Rhizocephala: Peltogastridae) on the hermit crab Pagurus middendorffii (Anomura: Paguridae)","authors":"Darya D. Golubinskaya, Svetlana N. Sharina, Olga M. Korn, Natalia A. Arbuzova","doi":"10.1017/s0025315424000511","DOIUrl":"https://doi.org/10.1017/s0025315424000511","url":null,"abstract":"In Peter the Great Bay (Russian waters of the Sea of Japan), rhizocephalan barnacle <jats:italic>Peltogaster lineata</jats:italic> Shiino, 1943, a common parasite of the hermit crab <jats:italic>Pagurus brachiomastus</jats:italic> (Thallwitz, 1891), was founded for the first time on the hermit crab <jats:italic>Pagurus middendorffii</jats:italic> Brandt, 1851 (Anomura: Paguridae). Taxonomical identification of the parasite was made using morphological and molecular methods. <jats:italic>Pagurus middendorffii</jats:italic> is the sixth host of <jats:italic>P. lineata.</jats:italic>","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770670","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 : 2024-07-26DOI: 10.1017/s0025315424000481
Aydin Örstan
The brachiopod Argyrotheca cuneata (Brachiopoda: Megathyrididae) is reported for the first time from the southern coast of Türkiye. Twenty-three complete specimens were found in samples of shell grit taken from depths less than 5 m. The findings suggest that A. cuneata may be a common brachiopod species in shallow nearshore habitats along the southern coasts of the country. Widths of the largest and the smallest specimens were 3.7 mm and 0.71 mm, respectively. A comparison of shell dimensions of all specimens indicate an allometric change in the shape of A. cuneata during growth from being longer than wide to wider than long. The protegula preserved on the smallest specimens are described and illustrated possibly for the first time for this species.
{"title":"First record of the brachiopod Argyrotheca cuneata from a nearshore habitat at the southern coast of Türkiye","authors":"Aydin Örstan","doi":"10.1017/s0025315424000481","DOIUrl":"https://doi.org/10.1017/s0025315424000481","url":null,"abstract":"The brachiopod <jats:italic>Argyrotheca cuneata</jats:italic> (Brachiopoda: Megathyrididae) is reported for the first time from the southern coast of Türkiye. Twenty-three complete specimens were found in samples of shell grit taken from depths less than 5 m. The findings suggest that <jats:italic>A. cuneata</jats:italic> may be a common brachiopod species in shallow nearshore habitats along the southern coasts of the country. Widths of the largest and the smallest specimens were 3.7 mm and 0.71 mm, respectively. A comparison of shell dimensions of all specimens indicate an allometric change in the shape of <jats:italic>A. cuneata</jats:italic> during growth from being longer than wide to wider than long. The protegula preserved on the smallest specimens are described and illustrated possibly for the first time for this species.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770671","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 : 2024-07-26DOI: 10.1017/s0025315424000535
Olga Yu. Evseeva, Alexander G. Dvoretsky
The bryozoan Uschakovia gorbunovi was initially characterized as a constituent member of benthic communities of the Kara and East-Siberian Seas. The academic literature reports this species in the Barents Sea, but without accurate information on sampling locations. Also, there are no previous records of this species in the northern Greenland Sea near Svalbard. Our analysis of benthic collections obtained during the past two decades revealed the occurrence of four distribution records of Uschakovia gorbunovi within the Barents and Greenland Sea specifying its distribution: one in the northwestern part of the area and three others in the waters surrounding Svalbard. The new distribution records may be related to inadequate sampling efforts or the expansion of this Arctic species into the Barents Sea, which may be due to either natural processes such as ocean currents, or introduction by mobile benthic species such as snow crabs.
{"title":"New distribution records of the Arctic bryozoan Uschakovia gorbunovi Kluge, 1946 in the Barents and Greenland Seas","authors":"Olga Yu. Evseeva, Alexander G. Dvoretsky","doi":"10.1017/s0025315424000535","DOIUrl":"https://doi.org/10.1017/s0025315424000535","url":null,"abstract":"The bryozoan <jats:italic>Uschakovia gorbunovi</jats:italic> was initially characterized as a constituent member of benthic communities of the Kara and East-Siberian Seas. The academic literature reports this species in the Barents Sea, but without accurate information on sampling locations. Also, there are no previous records of this species in the northern Greenland Sea near Svalbard. Our analysis of benthic collections obtained during the past two decades revealed the occurrence of four distribution records of <jats:italic>Uschakovia gorbunovi</jats:italic> within the Barents and Greenland Sea specifying its distribution: one in the northwestern part of the area and three others in the waters surrounding Svalbard. The new distribution records may be related to inadequate sampling efforts or the expansion of this Arctic species into the Barents Sea, which may be due to either natural processes such as ocean currents, or introduction by mobile benthic species such as snow crabs.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770539","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 : 2024-07-26DOI: 10.1017/s002531542400050x
José María Ahuatzin-Hernández, Uriel Ordóñez-López, Miguel Herrera-Rodríguez, Miguel A. Olvera-Novoa
The introduction of non-native species is a constant concern around the world since it represents one of the main threats to biodiversity, impacting negatively on native populations, some of them with commercial importance. Hence, monitoring these introductions is fundamental to the management and conservation of the biodiversity of a region. Herein, we report the presence of Moerisia cf. inkermanica in the ballast water of oil tankers loaded at the Cayo Arcas oil terminal. The taxonomy of Moerisia members is uncertain due to the lack of comprehensive morphological descriptions and the few molecular data available. So, we provide a detailed morphological comparison among its congeners. The taxonomic identity of the specimens was determined based on the length of the perradial lobes of the manubrium, the number of tentacles, and the features of their nematocyst rings. Some Moerisids are considered invasive in different localities of the world. However, this genus had not been reported in coastal ecosystems of the Gulf of Mexico over the years until now. Sampled tankers came from different ports of the region, mainly from the northern Gulf of Mexico. Therefore, we encourage systematic monitoring of these ecosystems to recognize the establishment of this species as invasive in the region, know its population dynamics over time, and evaluate the possible ecological impacts that could exert on native populations.
{"title":"Occurrence of the hydromedusa Moerisia cf. inkermanica (Hydrozoa, Moerisiidae) in the ballast water of oil tankers in the Gulf of Mexico","authors":"José María Ahuatzin-Hernández, Uriel Ordóñez-López, Miguel Herrera-Rodríguez, Miguel A. Olvera-Novoa","doi":"10.1017/s002531542400050x","DOIUrl":"https://doi.org/10.1017/s002531542400050x","url":null,"abstract":"The introduction of non-native species is a constant concern around the world since it represents one of the main threats to biodiversity, impacting negatively on native populations, some of them with commercial importance. Hence, monitoring these introductions is fundamental to the management and conservation of the biodiversity of a region. Herein, we report the presence of <jats:italic>Moerisia</jats:italic> cf. <jats:italic>inkermanica</jats:italic> in the ballast water of oil tankers loaded at the Cayo Arcas oil terminal. The taxonomy of <jats:italic>Moerisia</jats:italic> members is uncertain due to the lack of comprehensive morphological descriptions and the few molecular data available. So, we provide a detailed morphological comparison among its congeners. The taxonomic identity of the specimens was determined based on the length of the perradial lobes of the manubrium, the number of tentacles, and the features of their nematocyst rings. Some Moerisids are considered invasive in different localities of the world. However, this genus had not been reported in coastal ecosystems of the Gulf of Mexico over the years until now. Sampled tankers came from different ports of the region, mainly from the northern Gulf of Mexico. Therefore, we encourage systematic monitoring of these ecosystems to recognize the establishment of this species as invasive in the region, know its population dynamics over time, and evaluate the possible ecological impacts that could exert on native populations.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770543","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 : 2024-07-26DOI: 10.1017/s0025315424000523
Juan Carlos Arronte, Ana Antolínez, Rafael Bañón, José Heredia, Alejandro de Carlos
Diapterus brevirostris (Sauvage, 1879) is a fish of the family Gerreidae, native to the tropical and subtropical waters of the Pacific coast of America. A specimen of this species was captured off the coast of Asturias, Spain. To the best of our knowledge, this is the first record of the genus Diapterus in the North Atlantic. Given its small size (6.4 cm), it is likely that the species was present in the area for a relatively short time. Although the introduction pathway is unknown, the species' native area and the proximity of a major port to the site of capture suggest that ship's ballast water is the most likely vector of introduction.
{"title":"First record of Diapterus brevirostris (Teleostei: Gerridae) in Atlantic European waters: a case of introduced species","authors":"Juan Carlos Arronte, Ana Antolínez, Rafael Bañón, José Heredia, Alejandro de Carlos","doi":"10.1017/s0025315424000523","DOIUrl":"https://doi.org/10.1017/s0025315424000523","url":null,"abstract":"<jats:italic>Diapterus brevirostris</jats:italic> (Sauvage, 1879) is a fish of the family Gerreidae, native to the tropical and subtropical waters of the Pacific coast of America. A specimen of this species was captured off the coast of Asturias, Spain. To the best of our knowledge, this is the first record of the genus <jats:italic>Diapterus</jats:italic> in the North Atlantic. Given its small size (6.4 cm), it is likely that the species was present in the area for a relatively short time. Although the introduction pathway is unknown, the species' native area and the proximity of a major port to the site of capture suggest that ship's ballast water is the most likely vector of introduction.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770538","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 : 2024-05-31DOI: 10.1017/s0025315424000419
Alice McCullough, Francesca Strano, Valerio Micaroni, Lisa Woods, James J. Bell
Sponges are important components of marine systems globally, and while sponges have generally been shown to tolerate ocean acidification (OA), most earlier studies have focused on demosponges with siliceous skeletons. In contrast, little is known of how calcareous sponges, with calcite or aragonite skeletons, may react to OA conditions. Here we measured tissue necrosis and respiration rate of the temperate New Zealand calcareous sponge Grantia sp. to simulated OA. Our treatment conditions were based on the IPCC RCP8.5 (pCO2 1131.9 ± 113 μatm) scenario over a 28 day experiment, and responses were compared to current day control conditions (pCO2 512.59 ± 23 μatm). Sponge respiration rate was not significantly different between the control and treatment sponges and there was no evidence of tissue necrosis over the course of the experiment. Overall, our study is consistent with earlier studies on demosponges, showing calcareous sponges to be resilient to OA.
海绵是全球海洋系统的重要组成部分，虽然海绵一般都能耐受海洋酸化（OA），但早期的研究大多集中在具有硅质骨架的底栖海绵上。相比之下，人们对具有方解石或文石骨架的钙质海绵在OA条件下的反应知之甚少。在这里，我们测量了新西兰温带钙质海绵格兰蒂亚（Grantia sp.）在模拟 OA 条件下的组织坏死和呼吸速率。我们的处理条件基于 IPCC RCP8.5（pCO2 1131.9 ± 113 μatm）情景，实验时间为 28 天，并将反应与当日对照条件（pCO2 512.59 ± 23 μatm）进行了比较。对照组和处理组海绵的呼吸速率没有明显差异，在实验过程中也没有发现组织坏死的迹象。总之，我们的研究与之前对脱壳海绵的研究一致，表明钙质海绵对 OA 有较强的适应能力。
{"title":"Responses of the temperate calcareous sponge Grantia sp. to ocean acidification","authors":"Alice McCullough, Francesca Strano, Valerio Micaroni, Lisa Woods, James J. Bell","doi":"10.1017/s0025315424000419","DOIUrl":"https://doi.org/10.1017/s0025315424000419","url":null,"abstract":"Sponges are important components of marine systems globally, and while sponges have generally been shown to tolerate ocean acidification (OA), most earlier studies have focused on demosponges with siliceous skeletons. In contrast, little is known of how calcareous sponges, with calcite or aragonite skeletons, may react to OA conditions. Here we measured tissue necrosis and respiration rate of the temperate New Zealand calcareous sponge <jats:italic>Grantia</jats:italic> sp. to simulated OA. Our treatment conditions were based on the IPCC RCP8.5 (<jats:italic>p</jats:italic>CO<jats:sub>2</jats:sub> 1131.9 ± 113 <jats:italic>μ</jats:italic>atm) scenario over a 28 day experiment, and responses were compared to current day control conditions (<jats:italic>p</jats:italic>CO<jats:sub>2</jats:sub> 512.59 ± 23 <jats:italic>μ</jats:italic>atm). Sponge respiration rate was not significantly different between the control and treatment sponges and there was no evidence of tissue necrosis over the course of the experiment. Overall, our study is consistent with earlier studies on demosponges, showing calcareous sponges to be resilient to OA.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141196493","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 : 2024-05-22DOI: 10.1017/s0025315424000456
B. Sureandiran, T. H. Dave, N. K. Suyani, K. Karuppasamy
A total of five specimens of sand crab, Jonas kalpakkamensis Barathkumar, Das & Satpathy, 2016 were recorded for the first time from the Western Indian Ocean. The sand crab specimens were collected from the bycatch of the commercial demersal trawler targeting crustaceans at a depth of 15–50 m operated along the western region of the Gujarat coastal waters. The collected specimen consists of 3 males and 2 females and it was identified by comparing with holotype and paratype specimens. Previously, J. kalpakkamensis was reported from the Eastern Indian Ocean in the Bay of Bengal region but there is no report or distribution of this sand crab in the Western Indian Ocean. The detailed taxonomic diagnostic character of the sand crab, J. kalpakkamensis and the key for all species under the genus Jonas reported globally is provided in the current study.
西印度洋首次记录到五只沙蟹标本（Jonas kalpakkamensis Barathkumar, Das & Satpathy, 2016）。这些沙蟹标本是从古吉拉特邦西部沿海水域水深 15-50 米处以甲壳类为目标的商业底层拖网渔船的副渔获物中采集的。采集到的标本包括 3 个雄性和 2 个雌性，并通过与主模式和副模式标本进行比较进行了鉴定。此前，孟加拉湾的东印度洋曾报道过 J. kalpakkamensis，但在西印度洋却没有这种沙蟹的报道或分布。本研究提供了沙蟹 J. kalpakkamensis 的详细分类诊断特征以及全球报告的 Jonas 属下所有物种的检索表。
{"title":"First record of sand crab, Jonas kalpakkamensis Barathkumar, Das & Satpathy, 2016 (Decapoda, Brachyura, Corystidae) from the Western Indian Ocean with a key to the genus Jonas","authors":"B. Sureandiran, T. H. Dave, N. K. Suyani, K. Karuppasamy","doi":"10.1017/s0025315424000456","DOIUrl":"https://doi.org/10.1017/s0025315424000456","url":null,"abstract":"A total of five specimens of sand crab, <jats:italic>Jonas kalpakkamensis</jats:italic> Barathkumar, Das & Satpathy, 2016 were recorded for the first time from the Western Indian Ocean. The sand crab specimens were collected from the bycatch of the commercial demersal trawler targeting crustaceans at a depth of 15–50 m operated along the western region of the Gujarat coastal waters. The collected specimen consists of 3 males and 2 females and it was identified by comparing with holotype and paratype specimens. Previously, <jats:italic>J. kalpakkamensis</jats:italic> was reported from the Eastern Indian Ocean in the Bay of Bengal region but there is no report or distribution of this sand crab in the Western Indian Ocean. The detailed taxonomic diagnostic character of the sand crab, <jats:italic>J. kalpakkamensis</jats:italic> and the key for all species under the genus <jats:italic>Jonas</jats:italic> reported globally is provided in the current study.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141153470","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}
Statolith growth increments were analysed in the bigfin reef squid, Sepioteuthis lessoniana lineage B, for estimating the age and growth in the Gulf of Mannar Biosphere Reserve (GOM), southeast coast of India. The identification of S. lessoniana lineage B was determined by mitochondrial cytochrome c oxidase I gene sequence. The statolith increment age analysis indicated that the wild-captured squid population of S. lessoniana in the study area undergoes rapid growth. The age of S. lessoniana in males ranged from 61 (95 mm dorsal mantle length (DML)) to 220 d (390 mm DML), while it was 64 (98 mm DML) to 199 d (340 mm DML) in females. The average daily growth rate in males and females was 1.63 and 1.55 mm DML d−1, respectively. The instantaneous growth rate varied from 0.85 (210 d) to 4.1% (110 d) for males and 0.65 (190 d) to 3.7% (110 d) for females. The age at first maturity was 114 and 120 d for males and females, respectively. Back-calculated hatching dates and the attainment of maturity in females suggested that the reproduction of S. lessoniana is year-round, with two distinct spawning peaks during July–August and February months; accordingly, the hatching dates were spread throughout the year, with the presence of two cohorts. Based on the statolith data, it can be concluded that S. lessoniana lineage B in the GOM has a potential lifespan of up to 7 months. This finding contradicts the previous growth estimates based on length-frequency data, which underestimated the true growth potential of this species.
对印度东南海岸马纳尔湾生物圈保护区（GOM）中的大鳍礁鱿鱼（Sepioteuthis lessoniana品系B）的体石生长增量进行了分析，以估计其年龄和生长情况。通过线粒体细胞色素 c 氧化酶 I 基因序列确定了 S. lessoniana 系 B 的身份。统计石增量年龄分析表明，研究区野生捕获的 S. lessoniana 乌贼种群增长迅速。雄性乌贼的年龄从61（背幔长95 mm）到220 d（背幔长390 mm）不等，雌性乌贼的年龄从64（背幔长98 mm）到199 d（背幔长340 mm）不等。雄性和雌性的平均日生长率分别为 1.63 和 1.55 mm DML d-1。雄鱼的瞬时增长率从 0.85（210 d）到 4.1%（110 d）不等，雌鱼的瞬时增长率从 0.65（190 d）到 3.7%（110 d）不等。雄鱼和雌鱼的初熟年龄分别为 114 d 和 120 d。回溯计算的孵化期和雌鱼的成熟期表明，S. lessoniana全年都在繁殖，在7-8月和2月有两个明显的产卵高峰；因此，孵化期分布在全年，有两批鱼群存在。根据统计石数据，可以得出结论，在 GOM 的 S. lessoniana 系 B 的潜在寿命可达 7 个月。这一发现与之前根据长度频率数据进行的生长估计相矛盾，后者低估了该物种的真实生长潜力。
{"title":"Age and growth of bigfin reef squid, Sepioteuthis lessoniana (Cephalopoda: Loliginidae), in Gulf of Mannar Marine Biosphere Reserve, Indian Ocean","authors":"Mookaiah Kavitha, Geetha Sasikumar, Dhanasekaran Linga Prabu, Pappurajam Laxmilatha, Kurichithara K. Sajikumar","doi":"10.1017/s0025315424000407","DOIUrl":"https://doi.org/10.1017/s0025315424000407","url":null,"abstract":"Statolith growth increments were analysed in the bigfin reef squid, <jats:italic>Sepioteuthis lessoniana</jats:italic> lineage B, for estimating the age and growth in the Gulf of Mannar Biosphere Reserve (GOM), southeast coast of India. The identification of <jats:italic>S. lessoniana</jats:italic> lineage B was determined by mitochondrial cytochrome c oxidase I gene sequence. The statolith increment age analysis indicated that the wild-captured squid population of <jats:italic>S. lessoniana</jats:italic> in the study area undergoes rapid growth. The age of <jats:italic>S. lessoniana</jats:italic> in males ranged from 61 (95 mm dorsal mantle length (DML)) to 220 d (390 mm DML), while it was 64 (98 mm DML) to 199 d (340 mm DML) in females. The average daily growth rate in males and females was 1.63 and 1.55 mm DML d<jats:sup>−1</jats:sup>, respectively. The instantaneous growth rate varied from 0.85 (210 d) to 4.1% (110 d) for males and 0.65 (190 d) to 3.7% (110 d) for females. The age at first maturity was 114 and 120 d for males and females, respectively. Back-calculated hatching dates and the attainment of maturity in females suggested that the reproduction of <jats:italic>S. lessoniana</jats:italic> is year-round, with two distinct spawning peaks during July–August and February months; accordingly, the hatching dates were spread throughout the year, with the presence of two cohorts. Based on the statolith data, it can be concluded that <jats:italic>S. lessoniana</jats:italic> lineage B in the GOM has a potential lifespan of up to 7 months. This finding contradicts the previous growth estimates based on length-frequency data, which underestimated the true growth potential of this species.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059382","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 : 2024-05-17DOI: 10.1017/s0025315424000420
Paramasivam Kodeeswaran, A. Kathirvelpandian, Anil Mohapatra, T. T. Ajith Kumar
A new species of congrid eel genus, Ariosoma is described here based on two mature female specimens collected from trawl by-catch landings at Thoothukudi fishing harbour, off Thoothukudi, Bay of Bengal. The new species can be easily distinguished from its congeners in having pre-anal length 48.7–49.1% TL; dorsal-fin origin just before pectoral-fin insertion; body bicoloured, pale brown dorsally and silvery white ventrally; preopercular portion dark; pectoral fin reddish with dark spot at the base; SO canal with six pores; pre-dorsal vertebrae 10–11; pre-anal vertebrae 61–64; total vertebrae 162–163. Further, the new species differs from all the congeners of Indian waters in having more total vertebrae, except A. albimaculatum (162–163 vs 129–153 in others; 161–164 in A. albimaculatum). The new species identity was also supported by molecular analyses using the mitochondrial COI gene and the result revealed that the new species is closely related to Ariosoma maurostigma and Ariosoma albimaculatum with a pair-wise genetic distance of 11.4% and 11.6% followed by A. melanospilos with 16.8%.
{"title":"A new species of the congrid eel genus Ariosoma (Teleostei: Anguilliformes: Congridae) from the Southeast coast of India, Bay of Bengal","authors":"Paramasivam Kodeeswaran, A. Kathirvelpandian, Anil Mohapatra, T. T. Ajith Kumar","doi":"10.1017/s0025315424000420","DOIUrl":"https://doi.org/10.1017/s0025315424000420","url":null,"abstract":"A new species of congrid eel genus, <jats:italic>Ariosoma</jats:italic> is described here based on two mature female specimens collected from trawl by-catch landings at Thoothukudi fishing harbour, off Thoothukudi, Bay of Bengal. The new species can be easily distinguished from its congeners in having pre-anal length 48.7–49.1% TL; dorsal-fin origin just before pectoral-fin insertion; body bicoloured, pale brown dorsally and silvery white ventrally; preopercular portion dark; pectoral fin reddish with dark spot at the base; SO canal with six pores; pre-dorsal vertebrae 10–11; pre-anal vertebrae 61–64; total vertebrae 162–163. Further, the new species differs from all the congeners of Indian waters in having more total vertebrae, except <jats:italic>A. albimaculatum</jats:italic> (162–163 vs 129–153 in others; 161–164 in <jats:italic>A. albimaculatum</jats:italic>). The new species identity was also supported by molecular analyses using the mitochondrial COI gene and the result revealed that the new species is closely related to <jats:italic>Ariosoma maurostigma</jats:italic> and <jats:italic>Ariosoma albimaculatum</jats:italic> with a pair-wise genetic distance of 11.4% and 11.6% followed by <jats:italic>A. melanospilos</jats:italic> with 16.8%.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059354","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 : 2024-05-13DOI: 10.1017/s0025315424000444
Barbara Maichak de Carvalho, Yasmin Barbieri, Beatriz Andrade Syrio, Kátia Meirelles Felizola Freire, Acácio Ribeiro Gomes Tomás
Otoliths are an excellent tool for analysing the pattern of habitat use between adults and juveniles and connectivity between fish populations. Larimus breviceps is a species belonging to the family Sciaenidae, which has an important role in the marine food chain, as it is one of the most abundant and frequent species in the bycatch of coastal shrimp fisheries in Brazil. The present study aimed at comparing the otolith shape of specimens collected in three different Brazilian coastal areas: Sergipe (SE), northeastern region; São Paulo (SP), southeastern region; and Paraná (PR), southern region. In a laboratory, 88 otoliths were extracted, photographed, and the contour was analysed by the wavelet method (32 from SE, 28 from SP, and 28 from PR). The otolith contours varied between sampling sites. Linear discriminant analysis correctly reclassified 60.23% otoliths by the sampled sites, with the best reclassifications occurring in SE (62.5%), followed by PR (60.71%) and SP (57.14%). Multivariate analysis of variance also evidenced significant differences in contours among the sampling sites (F = 2.3; P < 0.005). Thus, two morphotypes of otoliths were found for L. breviceps: one from Sergipe (northeastern Brazil) and the second one from southeastern–southern Brazil, indicating connectivity between the populations off São Paulo and Paraná, to be confirmed by future genetic studies.
{"title":"Otolith shape can be used as a tool to infer population connectivity among individuals of Larimus breviceps at Southwestern Atlantic","authors":"Barbara Maichak de Carvalho, Yasmin Barbieri, Beatriz Andrade Syrio, Kátia Meirelles Felizola Freire, Acácio Ribeiro Gomes Tomás","doi":"10.1017/s0025315424000444","DOIUrl":"https://doi.org/10.1017/s0025315424000444","url":null,"abstract":"Otoliths are an excellent tool for analysing the pattern of habitat use between adults and juveniles and connectivity between fish populations. <jats:italic>Larimus breviceps</jats:italic> is a species belonging to the family Sciaenidae, which has an important role in the marine food chain, as it is one of the most abundant and frequent species in the bycatch of coastal shrimp fisheries in Brazil. The present study aimed at comparing the otolith shape of specimens collected in three different Brazilian coastal areas: Sergipe (SE), northeastern region; São Paulo (SP), southeastern region; and Paraná (PR), southern region. In a laboratory, 88 otoliths were extracted, photographed, and the contour was analysed by the wavelet method (32 from SE, 28 from SP, and 28 from PR). The otolith contours varied between sampling sites. Linear discriminant analysis correctly reclassified 60.23% otoliths by the sampled sites, with the best reclassifications occurring in SE (62.5%), followed by PR (60.71%) and SP (57.14%). Multivariate analysis of variance also evidenced significant differences in contours among the sampling sites (<jats:italic>F</jats:italic> = 2.3; <jats:italic>P</jats:italic> < 0.005). Thus, two morphotypes of otoliths were found for <jats:italic>L. breviceps</jats:italic>: one from Sergipe (northeastern Brazil) and the second one from southeastern–southern Brazil, indicating connectivity between the populations off São Paulo and Paraná, to be confirmed by future genetic studies.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140931523","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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