Marine Ecology-An Evolutionary Perspective最新文献

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Happy families? Insight into the coexistence between the curled octopus (Eledone cirrhosa) and common octopus (Octopus vulgaris) in waters around the UK 幸福的家庭?洞察英国周边水域卷曲章鱼(Eledone cirrhosa)和普通章鱼(Octopus vulgaris)的共存情况
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-03-31 DOI: 10.1111/maec.12803
C. J. Barrett, A. Brazier
{"title":"Happy families? Insight into the coexistence between the curled octopus (Eledone cirrhosa) and common octopus (Octopus vulgaris) in waters around the UK","authors":"C. J. Barrett,&nbsp;A. Brazier","doi":"10.1111/maec.12803","DOIUrl":"10.1111/maec.12803","url":null,"abstract":"<p>This case study investigated the co-occurrence of the curled octopus (<i>Eledone cirrhosa</i>) and common octopus (<i>Octopus vulgaris</i>), in waters around the United Kingdom. The findings suggest that coexistence may be maintained because of the lack of competition for <i>E</i>. <i>cirrhosa</i> against the seemingly declining <i>O</i>. <i>vulgaris</i> populations, and that habitat and temporal partitioning are the likely mechanisms. It is contemplated whether species misidentification may an important factor in masking the accuracy of population dynamics of co-occurring octopus species, and, as such, potential uncertainty in octopus coexistence and any future fishery management decisions. It is confidently suggested that, currently, only two octopus species are resident to UK waters. Now, further studies should include diet partitioning to determine whether diet partitioning is a mechanism for <i>E</i>. <i>cirrhosa</i> and <i>O</i>. <i>vulgaris</i> coexistence, and monitoring may make us understand their population dynamics.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140361054","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}
引用次数: 0
Spatial and temporal recruitment variability of sandy subtidal megabenthic populations on an open coastline influenced by a tsunami caused by the 2011 Tohoku earthquake 受 2011 年东北地震引发的海啸影响的开阔海岸线沙质潮下巨型底栖生物种群的时空增殖变异性
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-03-19 DOI: 10.1111/maec.12801
Daisuke Sugiura, Shotaro Fukui-Hashizume, Hideki Noro, Yoshikazu Fujikawa
{"title":"Spatial and temporal recruitment variability of sandy subtidal megabenthic populations on an open coastline influenced by a tsunami caused by the 2011 Tohoku earthquake","authors":"Daisuke Sugiura,&nbsp;Shotaro Fukui-Hashizume,&nbsp;Hideki Noro,&nbsp;Yoshikazu Fujikawa","doi":"10.1111/maec.12801","DOIUrl":"10.1111/maec.12801","url":null,"abstract":"<p>The spatial distribution and size structure of two infaunal filter-feeding bivalves, that is, Sakhalin surf clam <i>Spisula sachalinensis</i> (Schrenck, 1862) and dwarf sunray surf clam <i>Mactra crossei</i> (Dunker, 1877), and an epibenthic deposit feeder, namely the sand dollar <i>Scaphechinus mirabilis</i> (A. Agassiz, 1864), were investigated on an open sandy beach in northern Japan after the tsunami caused by the 2011 Tohoku earthquake. Settlement of <i>S. sachalinensis</i> was relatively abundant in the 2011- and 2012-year classes, but then substantially decreased until the early months of 2013. The 0+-year-old distribution was associated mainly with a depth gradient and weakly with the median grain size of the sediment. <i>Mactra crossei</i> had (1) an inverse trend in long-shore variation in abundance at 2+ years of age and (2) later-post-settlement processes that regulated its population dynamics, compared to those of <i>S. sachalinensis</i>. The 2010-year classes for both Mactridae species survived until 2+ years of age, although their abundance showed a high level of spatial variation. <i>Scaphechinus mirabilis</i> showed fine-scale spatial variation in their recruitment dynamics. The cross-shore distribution of <i>S. mirabilis</i> showed a clear ontogenetic shift from shallow to deep water. The cross-shore distribution of small <i>S. mirabilis</i> (&lt;40 mm in test diameter) overlapped that of the juvenile <i>S. sachalinensis</i>, but their interaction was unclear. Overall, the level of spatial and temporal recruitment variation was relatively high in each species. However, the tsunami has scarcely influenced the cross-shore distribution and population structure of each species.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140168180","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}
引用次数: 0
The eternal life of taxonomic monographs: The series on the Fauna and Flora of the Gulf of Naples 分类学专著的永恒生命:那不勒斯海湾动植物丛书
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-03-07 DOI: 10.1111/maec.12800
Ferdinando Boero
{"title":"The eternal life of taxonomic monographs: The series on the Fauna and Flora of the Gulf of Naples","authors":"Ferdinando Boero","doi":"10.1111/maec.12800","DOIUrl":"10.1111/maec.12800","url":null,"abstract":"<p>Taxonomic monographs, such as those of the Fauna and Flora of the Gulf of Naples, have almost eternal life, in terms of scientific relevance, and keep being cited even after centuries.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140075866","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}
引用次数: 0
Epizoic yellow sponge (Poecilosclerida, Demospongiae) expansion on living Scleractinian corals in Bintan, Riau Archipelago, Indonesia 印度尼西亚廖内群岛民丹岛活体硬骨珊瑚上的表皮黄海绵(Poecilosclerida,Demospongiae)扩张情况
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-02-23 DOI: 10.1111/maec.12796
Ofri Johan, Nicole J. de Voogd, Agus Budianto, Sonja Peters, Samir M. Aljbour, Andreas Kunzmann
{"title":"Epizoic yellow sponge (Poecilosclerida, Demospongiae) expansion on living Scleractinian corals in Bintan, Riau Archipelago, Indonesia","authors":"Ofri Johan,&nbsp;Nicole J. de Voogd,&nbsp;Agus Budianto,&nbsp;Sonja Peters,&nbsp;Samir M. Aljbour,&nbsp;Andreas Kunzmann","doi":"10.1111/maec.12796","DOIUrl":"10.1111/maec.12796","url":null,"abstract":"<p>Coral reef ecosystems in Indonesia are under threat due to changes in the environment driven by global climate change, along with local disturbances such as sedimentation and eutrophication. Consequently, comprehensive coral reef monitoring activities have been initiated at numerous locations across Indonesia. In this study, the findings from coral reef health surveys across 14 reef sites (within 40 hectares) in the Bintan area (Riau Archipelago, Indonesia; 100 km southeast of Singapore) revealed a potentially novel epizoic yellow sponge species (<i>Phorbas</i> sp.) that overgrows coral colonies. This species, tentatively classified as a new <i>Phorbas</i> sp. (order Poecilosclerida: family Hymedesmiidae), was identified through a combined approach employing classical taxonomic methods along with DNA barcoding using the cytochrome c oxidase I (COI) gene. At every site, three permanent 20-m transects were established to annually monitor live coral coverage and species composition between 2014 and 2017. The survey indicated a notable change in the overall coral cover during this period. The abundance of coral diseases was investigated in 2014 and 2017. Additionally, the progress of <i>Phorbas</i> sp., was closely monitored (i.e., every second day for one week) at Bintan Island (site 11) during the dry season in August 2017. This approach aimed to approximate the relative impact of each incident on the coral's condition. The results indicated that the most comprehensive change occurred due to the overgrowth of <i>Phorbas</i> sp., which affected 12 scleractinian coral species across eight genera in almost all sites except one. The abundance of this epizoic sponge infestation was highest at Pulau Beralas Pasir (site 10), constituting 22.9% of all recorded life forms, and lowest at Pulau Pangkil-Besar (site 13), with only 0.7%. The expansion of the thin yellow sponge tissue was estimated to increase by up to 0.51 ± 0.48 cm<sup>2</sup> per day on <i>Porites</i> coral.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12796","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139954974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Macoma calcarea (Gmelin, 1791), a poorly studied bivalve, in the Kara Sea: Distribution and growth variability 喀拉海中一种研究较少的双壳类动物--Macoma calcarea(Gmelin,1791 年):分布和生长变化
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-02-12 DOI: 10.1111/maec.12798
Kseniya N. Lisitsyna, Alexandra V. Gerasimova, Nadezhda A. Filippova
{"title":"Macoma calcarea (Gmelin, 1791), a poorly studied bivalve, in the Kara Sea: Distribution and growth variability","authors":"Kseniya N. Lisitsyna,&nbsp;Alexandra V. Gerasimova,&nbsp;Nadezhda A. Filippova","doi":"10.1111/maec.12798","DOIUrl":"10.1111/maec.12798","url":null,"abstract":"<p><i>Macoma calcarea</i>, one of the most common bivalves in the infauna of the Arctic seas of Russia, is still poorly investigated from an ecological viewpoint. We studied the distribution and growth of <i>Macoma</i> in the southwestern part of the Kara Sea. The samples were obtained at 119 stations at depths from 4 to 415 m in 2012–2013. The main trends in the distribution of this species corresponded to its feeding type (deposit-feeder), the biogeographic affiliation and the features of reproductive ecology. <i>Macoma calcarea</i> in the study area were mainly concentrated at depths of 20–50 m. Their density and biomass were, respectively, eight and two times higher on silty sediments than on sandy ones. The results of age assessment of <i>M. calcarea</i> by the external growth marks and the shell cross-sections were quite similar. However, age determination based on internal growth marks was found to be preferable for older individuals and individuals with heavily eroded shells. Group growth rate of <i>M. calcarea</i> was not very sensitive to environmental conditions. No site-to-site variability in the growth characteristics was found. The maximum size and age of <i>M. calcarea</i> (37 mm and 21 years respectively), as well as the average annual growth rate (about 2 mm/year), were close to the values of these parameters in other parts of the distribution of this species.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762395","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}
引用次数: 0
Effect of a cyclonic eddy on phytoplankton: A bioassay experiment 旋涡对浮游植物的影响:生物测定实验
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-02-06 DOI: 10.1111/maec.12797
Alexander S. Mikaelyan, Anna V. Lifanchuk, Sergey A. Mosharov, Alexey V. Fedorov, Irina V. Mosharova, Oksana A. Ocherednik
{"title":"Effect of a cyclonic eddy on phytoplankton: A bioassay experiment","authors":"Alexander S. Mikaelyan,&nbsp;Anna V. Lifanchuk,&nbsp;Sergey A. Mosharov,&nbsp;Alexey V. Fedorov,&nbsp;Irina V. Mosharova,&nbsp;Oksana A. Ocherednik","doi":"10.1111/maec.12797","DOIUrl":"10.1111/maec.12797","url":null,"abstract":"<p>Cyclonic eddies often increase the primary productivity of marine ecosystems. However, the study of their influence on the taxonomic structure and productivity of plankton is complex due to the short-term and mesoscale nature of the action of eddies. In a laboratory bioassay experiment, we simulated two mechanisms of eddy's effect on the deep phytoplankton maximum: an increase in the upward flow of deep nutrients and illumination. Doubling of nutrient additions compared to control increased chlorophyll's specific growth rate (SGR) 1.7-fold over 12 days while doubling the light intensity increased SGR by 3.5 times. During the first 4 days of the experiment, at the exponential growth stage, SGR of carbon biomass was maximum with the simultaneous doubling of nutrients and light (0.44 day<sup>−1</sup>). It was statistically significantly higher than at increased nutrients but not light. These results suggest that nutrient deficiencies were less crucial for phytoplankton growth than light. The increase in the phytoplankton biomass was mainly due to the growth of a large-celled diatom <i>Pseudosolenia calcar-avis</i>. It showed the highest SGR (1.15–1.28 day<sup>−1</sup>) at increased nutrients and/or light, resulting in high wet biomass of 2–3 g m<sup>−3</sup> over 4 days. The ecological meaning of the obtained results is as follows. First, in the eddy, where the deep phytoplankton maximum is located close to the nutricline, its rise to more illuminated layers results in higher phytoplankton growth than the shortening distance to the nutricline. Second, increases in the upward flow of nutrients and light intensity, separate or simultaneous, stimulate the rapid reproduction of large-celled diatoms that increase the carbon-to-chlorophyll ratio by 2–4 times. Third, exposure to a typical Black Sea mesoscale cyclonic eddy can lead to phytoplankton blooms in the thermocline within a few days.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762241","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}
引用次数: 0
Coral recruitment in the Toliara region of southwest Madagascar: Spatio-temporal variability and implications for reef conservation 马达加斯加西南部托利亚拉地区的珊瑚更新:时空变化及对珊瑚礁保护的影响
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-01-31 DOI: 10.1111/maec.12794
Radonirina Lebely Botosoamananto, Gildas Todinanahary, Lahitsiresy Max Gasimandova, Mahery Randrianarivo, François Guilhaumon, Lucie Penin, Mehdi Adjeroud
{"title":"Coral recruitment in the Toliara region of southwest Madagascar: Spatio-temporal variability and implications for reef conservation","authors":"Radonirina Lebely Botosoamananto,&nbsp;Gildas Todinanahary,&nbsp;Lahitsiresy Max Gasimandova,&nbsp;Mahery Randrianarivo,&nbsp;François Guilhaumon,&nbsp;Lucie Penin,&nbsp;Mehdi Adjeroud","doi":"10.1111/maec.12794","DOIUrl":"10.1111/maec.12794","url":null,"abstract":"<p>Investigating coral recruitment is critical to better understand replenishment and resilience capacities of coral reef ecosystems and to improve their conservation. Here, we examined the spatio-temporal patterns of coral recruitment and the influence of confamilial adult coral cover in the region of Toliara, southwest Madagascar. Terracotta tiles were immersed from October to late January over a 3-year period (2018–2021) at 10 stations located on major reef habitats. Overall recruitment rates were relatively high compared to those of other reefs in the Southwestern Indian Ocean, ranging from 219.20 recruits.m<sup>−2</sup> in 2018–2019 to 156.30 recruits.m<sup>−2</sup> in 2020–2021. Recruit assemblages were dominated by Acroporidae (45.5%) and Pocilloporidae (45.0%), whereas Poritidae (1.9%) and “other” recruits (3.6%) were rarely recorded. Recruitment patterns varied among stations and habitats, with higher rates in patch reef (187.06 recruits.m<sup>−2</sup>) and outer slope stations (156.99 recruits.m<sup>−2</sup>) compared to inner slope stations (108.04 recruits.m<sup>−2</sup>). With the exception of “other” recruits, recruitment rates decreased between 2018 and 2019 and 2019 and 2020, followed by an increase in 2020–2021 that reached or even exceeded initial values at some stations. The abundance of Pocilloporidae recruits was positively correlated with the cover of confamilial adult corals, highlighting potential stock–recruitment or recruitment–limitation relationships, or an aggregative settlement of young stages near the established adult colonies, whereas no such relationships were recorded for other coral family categories. This study identified sites on the outer slope and patch reefs to consider prioritizing for protection as recruitment hotspots, as well as degraded inner slope sites that could benefit from restoration, with the important caveat that any measures should be accompanied by alternative income-generating activities through local involvement that suits the Malagasy context, such as locally marine managed areas.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12794","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139657770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Habitat loss and small-scale fishery: A controversial issue 生境丧失与小型渔业:一个有争议的问题
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-01-29 DOI: 10.1111/maec.12795
Chiara Silvestrini, Alberto Colletti, Antonio Di Franco, Francesco Colloca, Giacomo Milisenda, Serena Zampardi, Maria Cristina Mangano, Giorgio Aglieri, Marco Ranù, Gianluca Liguori, Roberto Danovaro, Federica Foglini, Valentina Grande, Simonetta Fraschetti
{"title":"Habitat loss and small-scale fishery: A controversial issue","authors":"Chiara Silvestrini,&nbsp;Alberto Colletti,&nbsp;Antonio Di Franco,&nbsp;Francesco Colloca,&nbsp;Giacomo Milisenda,&nbsp;Serena Zampardi,&nbsp;Maria Cristina Mangano,&nbsp;Giorgio Aglieri,&nbsp;Marco Ranù,&nbsp;Gianluca Liguori,&nbsp;Roberto Danovaro,&nbsp;Federica Foglini,&nbsp;Valentina Grande,&nbsp;Simonetta Fraschetti","doi":"10.1111/maec.12795","DOIUrl":"10.1111/maec.12795","url":null,"abstract":"<p>Fishery is one of the most impacting human activities and is responsible for habitat loss in marine systems. While the effects of large-scale fisheries have been largely investigated, impacts of small-scale fisheries (SSF) on seafloor integrity are more often assumed than quantitatively investigated. We carried out a literature review at global scale, resulting in 19 studies with quantitative data on sessile benthic bycatch and only one documenting habitat loss driven by SSF. We also conducted a fine-scale assessment within a Mediterranean partially protected area (PPA). Results showed that 513 m<sup>2</sup> of the <i>Posidonia oceanica</i> meadow are removed annually by local SSF within the PPA, considering bycatch, fishing effort, and shoot density. Knowledge on fishing effort and fine-scale mapping is critical to assess habitat loss, suggesting the need for specific recommendations for eco-sustainable local fisheries.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12795","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139648614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genetic structure of the commercially important Asian monsoon scallop, Amusium pleuronectes (Linnaeus 1758), across the Indonesian Archipelago 具有重要商业价值的亚洲季风扇贝 Amusium pleuronectes (Linnaeus 1758) 在印度尼西亚群岛的遗传结构
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-01-25 DOI: 10.1111/maec.12793
Eko Hardianto, Diah Permata Wijayanti, Hideyuki Imai
{"title":"Genetic structure of the commercially important Asian monsoon scallop, Amusium pleuronectes (Linnaeus 1758), across the Indonesian Archipelago","authors":"Eko Hardianto,&nbsp;Diah Permata Wijayanti,&nbsp;Hideyuki Imai","doi":"10.1111/maec.12793","DOIUrl":"10.1111/maec.12793","url":null,"abstract":"<p>The Asian monsoon scallop, <i>Amusium pleuronectes</i>, is a key member of the most commercially harvested shellfish community in Asia. Patterns of genetic diversity and natural population structure in the target species were investigated to gain a better understanding of its evolutionary history. Samples were collected from five sites across the Indonesian Archipelago. We characterized sequence variation in an mtDNA control region fragment in 249 individuals. The genetic diversity (<i>h</i> = ranging from 0.83 to 0.92) and nucleotide diversity (<i>π</i> = ranging from 0.24 to 0.32) were low compared to the estimates reported for many other similar shellfish taxa. Nonetheless, analysis of molecular variance revealed significant genetic differentiation, <i>F</i><sub>ST</sub> = 0.0203 (<i>p</i> &lt; .005 after Bonferroni corrections). Furthermore, both Pairwise fixation index values showed significance among majority population sites, indicating that dispersal potential and gene flow were low in the past. This pattern likely reflects a low dispersal potential, potentially allowing local adaptation to sites that augment any oceanographic and geographic contribution to genetic structure. The results described herein provide a foundation for developing better conservation strategies for the target species in the future.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578091","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}
引用次数: 0
Food preferences of two nudibranch species from the South China Sea revealed by fatty acid trophic markers 脂肪酸营养标记揭示南海两种裸鳃动物的食物偏好
IF 1.1 4区 生物学
Marine Ecology-An Evolutionary Perspective Pub Date : 2024-01-13 DOI: 10.1111/maec.12792
Anatolii Komisarenko, Natalia V. Zhukova
{"title":"Food preferences of two nudibranch species from the South China Sea revealed by fatty acid trophic markers","authors":"Anatolii Komisarenko,&nbsp;Natalia V. Zhukova","doi":"10.1111/maec.12792","DOIUrl":"10.1111/maec.12792","url":null,"abstract":"<p>Nudibranchs are mostly predators preying on a variety of invertebrates. The dietary preferences of tropical nudibranchs were studied by the method of fatty acid trophic markers (FATM) in order to for better understanding of their trophic ecology. For this, the fatty acid profiles of two nudibranch species from the South China Sea, <i>Doriprismatica atromarginata</i> (Cuvier, 1804) and <i>Jorunna funebris</i> (Kelaart, 1859), were analyzed and trophic markers were identified. The high level of very long chain fatty acids (from C24 to C28), which are characteristic of sponges, in nudibranchs was evidence of their predation on sponges. However, the distribution of these components differed significantly between the species. The acids 24:2Δ5,9, 25:2Δ5,9, 26:2Δ9,19, and especially 26:2Δ5,9 dominated in <i>D. atromarginata</i>, but were not found in <i>J. funebris</i> that was rich in 28:2Δ5,9 and 28:3Δ5,9,19. The significant differences in the profile of these demospongic acids indicate that these nudibranchs consumed different species of sponges. The similarity between the FATMs of <i>J. funebris</i> and its potential prey, the sponge <i>Xestospongia</i>, confirmed their predator–prey relationship. <i>Doriprismatica atromarginata</i> from different sites along the Vietnam coast had different FATM profiles, which showed this nudibranch as having no any strict food specialization and feeding on various Demospongiae species. The abundance of bacterial FATMs in the nudibranchs suggests the importance of bacteria in their diet. Thus, the FATM method has proven to be useful for identifying the feeding specialization and assessing the effect of food availability on the diet of these tropical nudibranch species.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"45 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139483623","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}
引用次数: 0
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