J. Arnull, A. Wilson, K. Brayne, K. Dexter, AG Donah, C. Gough, T. Klückow, B. Ngwenya, A. Tudhope
Sea cucumber aquaculture is increasing in extent and importance throughout the Indo-Pacific region, supplying a luxury seafood market in Asia. In this context, the grow-out of hatchery-bred juveniles in community-farmed pens is proving to be a viable model, providing increased income security and alternative livelihood options to resource-limited communities. Here, we report a study of the impacts of such sea cucumber farming on the growth of seagrass (a favourable habitat for the animals) at a village-scale aquaculture site in southwest Madagascar. Using experiments, we found that the presence of the hatchery-bred sea cucumber Holothuria scabra (sandfish), at stocking densities of 300 g m-2 (similar to the density used in the farmed pens, but relatively high for natural populations), resulted in a large (~30%), statistically significant increase in the leaf extension rate of the locally dominant seagrass species Thalassia hemprichii. However, the other dominant seagrass species, Cymodocea serrulata, did not significantly change its leaf extension rate in the presence of H. scabra. Since seagrass is a globally important coastal habitat, supporting high biodiversity, carbon sequestration, shoreline stability and nursery grounds for commercial and small-scale fisheries, the positive effect of H. scabra farming on the growth rate of at least one dominant seagrass species implies potential important ecological co-benefits. These co-benefits of H. scabra farming are likely to be relevant across the tropical Indo-Pacific coastlines, where this species is cultured.
海参养殖在整个印度太平洋地区的范围和重要性都在增加，为亚洲提供了一个豪华海鲜市场。在这种情况下，在社区养殖的围栏中培育孵化场繁殖的幼鱼被证明是一种可行的模式，为资源有限的社区提供了更高的收入保障和替代生计选择。在这里，我们报告了一项研究，研究了在马达加斯加西南部的一个村庄规模的水产养殖场，这种海参养殖对海草(动物的有利栖息地)生长的影响。通过实验，我们发现，在放养密度为300 g m-2(与养殖栏的密度相似，但对自然种群来说相对较高)的情况下，孵育海参(Holothuria scabra)的存在导致当地优势海草种Thalassia hemprichii的叶片延伸率大幅增加(约30%)，具有统计学显著性。而其他优势海草种Cymodocea serrulata在剑鞘菌存在时，其叶片伸展率没有显著变化。由于海草是全球重要的沿海栖息地，支持高生物多样性、碳固存、海岸线稳定性和商业和小规模渔业的育苗地，因此，对至少一种优势海草物种的生长速度的积极影响意味着潜在的重要生态协同效益。在整个热带印度洋-太平洋海岸线上，这种鱼的养殖可能会带来这些共同的好处。
{"title":"Ecological co-benefits from sea cucumber farming: Holothuria scabra increases growth rate of seagrass","authors":"J. Arnull, A. Wilson, K. Brayne, K. Dexter, AG Donah, C. Gough, T. Klückow, B. Ngwenya, A. Tudhope","doi":"10.3354/AEI00409","DOIUrl":"https://doi.org/10.3354/AEI00409","url":null,"abstract":"Sea cucumber aquaculture is increasing in extent and importance throughout the Indo-Pacific region, supplying a luxury seafood market in Asia. In this context, the grow-out of hatchery-bred juveniles in community-farmed pens is proving to be a viable model, providing increased income security and alternative livelihood options to resource-limited communities. Here, we report a study of the impacts of such sea cucumber farming on the growth of seagrass (a favourable habitat for the animals) at a village-scale aquaculture site in southwest Madagascar. Using experiments, we found that the presence of the hatchery-bred sea cucumber Holothuria scabra (sandfish), at stocking densities of 300 g m-2 (similar to the density used in the farmed pens, but relatively high for natural populations), resulted in a large (~30%), statistically significant increase in the leaf extension rate of the locally dominant seagrass species Thalassia hemprichii. However, the other dominant seagrass species, Cymodocea serrulata, did not significantly change its leaf extension rate in the presence of H. scabra. Since seagrass is a globally important coastal habitat, supporting high biodiversity, carbon sequestration, shoreline stability and nursery grounds for commercial and small-scale fisheries, the positive effect of H. scabra farming on the growth rate of at least one dominant seagrass species implies potential important ecological co-benefits. These co-benefits of H. scabra farming are likely to be relevant across the tropical Indo-Pacific coastlines, where this species is cultured.","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69593654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. L. Mengual, P. Sanchez‐Jerez, J. Ballester-Berman
{"title":"Offshore aquaculture as climate change adaptation in coastal areas: an analysis of sea surface temperature trends in the Western Mediterranean Sea","authors":"I. L. Mengual, P. Sanchez‐Jerez, J. Ballester-Berman","doi":"10.3354/aei00420","DOIUrl":"https://doi.org/10.3354/aei00420","url":null,"abstract":"","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69594448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Hedger, O. Diserud, B. Finstad, A. Jensen, D. Hendrichsen, O. Ugedal, T. F. Næsje
Salmon lice Lepeophtheirus salmonis infestation of sea trout Salmo trutta results in both additional marine mortality and behavioral changes which may contribute to sea trout population decline. For effective management of activities that increase exposure to salmon lice, such as salmon aquaculture, it is necessary to have a full understanding of how salmon lice may affect sea trout populations. An individual-based model (IBTRUTTA) was therefore developed to investigate the potential effects of salmon lice infestation on sea trout population abundance and dynamics based on data from the River Halselva and Altafjord system in northern Norway. This model allowed investigation of the effect of lice-induced mortality and also the compensatory salmonid behavioral mechanisms of premature return to freshwater, either persistent for overwintering or transitory after which sea trout could go back to sea. It was found that, in the absence of compensatory mechanisms, even low rates of lice infestation could lead to marked declines in sea trout abundance. Compensatory behavioral mechanisms had the potential to reduce these de clines, but persistent premature return resulted in reduced body mass of returning adults. The shape of the stock-recruitment relationship was also shown to strongly affect how lice-induced mortality impacted the population.
{"title":"Modeling salmon lice effects on sea trout population dynamics using an individual-based approach","authors":"R. Hedger, O. Diserud, B. Finstad, A. Jensen, D. Hendrichsen, O. Ugedal, T. F. Næsje","doi":"10.3354/AEI00397","DOIUrl":"https://doi.org/10.3354/AEI00397","url":null,"abstract":"Salmon lice Lepeophtheirus salmonis infestation of sea trout Salmo trutta results in both additional marine mortality and behavioral changes which may contribute to sea trout population decline. For effective management of activities that increase exposure to salmon lice, such as salmon aquaculture, it is necessary to have a full understanding of how salmon lice may affect sea trout populations. An individual-based model (IBTRUTTA) was therefore developed to investigate the potential effects of salmon lice infestation on sea trout population abundance and dynamics based on data from the River Halselva and Altafjord system in northern Norway. This model allowed investigation of the effect of lice-induced mortality and also the compensatory salmonid behavioral mechanisms of premature return to freshwater, either persistent for overwintering or transitory after which sea trout could go back to sea. It was found that, in the absence of compensatory mechanisms, even low rates of lice infestation could lead to marked declines in sea trout abundance. Compensatory behavioral mechanisms had the potential to reduce these de clines, but persistent premature return resulted in reduced body mass of returning adults. The shape of the stock-recruitment relationship was also shown to strongly affect how lice-induced mortality impacted the population.","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69592974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leifeng Guo, B. Sun, Duanduan Chen, C. Yi, Jian Teng, Jielun Yu, Shou-dong Wang, Yuanyuan Ru, Hui Wang
ADP-ribosylation factors (Arfs) are guanosine triphosphate (GTP)-binding proteins that play essential roles in membrane trafficking, and they have been recently reported to be involved in innate immunity in crustaceans. However, little information is available on Arfs in the oriental river prawn Macrobrachium nipponense and their response to ammonia nitrogen stress. In this study, we identified a novel M. nipponense Arfn gene (MnArfn). The full-length cDNA of MnArfn was 1076 bp. It contained a 537 bp open reading frame (ORF) and encoded a 178 amino acid protein with a predicted molecular weight of 19.85 kDa. Sequence and phylogenetic analyses showed that MnArfn was an unidentified Arf, sharing 55−61% identity with other known Arfs. Quantitative real-time PCR (qPCR) indicated that all examined tissues (hepatopancreas, stomach, gill, heart, muscle, and eyestalk) expressed MnArfn. Hepatopancreas and gills, 2 organs involved in environmental stress management, had the highest expression. Under conditions of ammonia nitrogen stress, MnArfn expression in hepatopancreas and gills was significantly up-regulated at 6, 12, and 24 h. Western blotting experiments also revealed that MnArfn was distributed in all examined tissues, with the highest expression in hepatopancreas and gills, consistent with qPCR results. The findings from this study indicate that MnArfn may play an important role in the response of M. nipponense to ammonia nitrogen stress, which provides a new avenue to study the resistance mechanism(s) of crustaceans to ammonia nitrogen and to screen for individuals with resistance to unfavorable environments.
{"title":"Characterization of a novel ADP-ribosylation factor gene from Macrobrachium nipponense and its response to ammonia nitrogen stress","authors":"Leifeng Guo, B. Sun, Duanduan Chen, C. Yi, Jian Teng, Jielun Yu, Shou-dong Wang, Yuanyuan Ru, Hui Wang","doi":"10.3354/AEI00399","DOIUrl":"https://doi.org/10.3354/AEI00399","url":null,"abstract":"ADP-ribosylation factors (Arfs) are guanosine triphosphate (GTP)-binding proteins that play essential roles in membrane trafficking, and they have been recently reported to be involved in innate immunity in crustaceans. However, little information is available on Arfs in the oriental river prawn Macrobrachium nipponense and their response to ammonia nitrogen stress. In this study, we identified a novel M. nipponense Arfn gene (MnArfn). The full-length cDNA of MnArfn was 1076 bp. It contained a 537 bp open reading frame (ORF) and encoded a 178 amino acid protein with a predicted molecular weight of 19.85 kDa. Sequence and phylogenetic analyses showed that MnArfn was an unidentified Arf, sharing 55−61% identity with other known Arfs. Quantitative real-time PCR (qPCR) indicated that all examined tissues (hepatopancreas, stomach, gill, heart, muscle, and eyestalk) expressed MnArfn. Hepatopancreas and gills, 2 organs involved in environmental stress management, had the highest expression. Under conditions of ammonia nitrogen stress, MnArfn expression in hepatopancreas and gills was significantly up-regulated at 6, 12, and 24 h. Western blotting experiments also revealed that MnArfn was distributed in all examined tissues, with the highest expression in hepatopancreas and gills, consistent with qPCR results. The findings from this study indicate that MnArfn may play an important role in the response of M. nipponense to ammonia nitrogen stress, which provides a new avenue to study the resistance mechanism(s) of crustaceans to ammonia nitrogen and to screen for individuals with resistance to unfavorable environments.","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69593182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nutrient removal in a constructed wetland treating aquaculture effluent at long hydraulic retention time","authors":"J. Dalsgaard, M. von Ahnen, P. Pedersen","doi":"10.3354/aei00411","DOIUrl":"https://doi.org/10.3354/aei00411","url":null,"abstract":"","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69593460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Aubin, V. Baizeau, C. Jaeger, M. Roucaute, S. Gamito
Freshwater pond polyculture faces many challenges in Europe. Appropriate tools must be developed to better understand and manage trophic interactions in pond ecosystems. The objective of our study was to understand the trophic interactions and make inference on the fish diet in common carp polyculture through a combination of experiments and trophic web modeling. We conducted an experiment in small fishponds of common carp polyculture reared with roach and perch and used Ecopath with Ecosim software to characterize the food web. Two replicates of 3 treatments were performed: a semi-extensive pond with low fish density and no formulated feed, an intensive pond with twice the fish density and formulated feed and an intensive pond coupled with a planted lagoon. Ten trophic groups were defined to describe the food web. The modeling procedure enabled us to estimate the diets of each trophic group. The fish diet in fed and non-fed treatments differed greatly since the carp fed mainly on formulated feed when available. The roach exhibited trophic plasticity by adapting their diet to the available resources. The benthic macroinvertebrates and zooplankton were preyed upon intensively; they became the limiting factors for fish production and depended on phytoplankton availability. Detritus and phytoplankton were the main sources of nutrients in all treatments but were not used efficiently. These results provide several insights for improving polyculture. In particular, they promote better management of zooplankton and macroinvertebrates as food sources for target species and a better balance in fish assemblages for more efficient use of resources.
{"title":"Modeling trophic webs in freshwater fishpond systems using Ecopath: towards better polyculture management","authors":"J. Aubin, V. Baizeau, C. Jaeger, M. Roucaute, S. Gamito","doi":"10.3354/AEI00406","DOIUrl":"https://doi.org/10.3354/AEI00406","url":null,"abstract":"Freshwater pond polyculture faces many challenges in Europe. Appropriate tools must be developed to better understand and manage trophic interactions in pond ecosystems. The objective of our study was to understand the trophic interactions and make inference on the fish diet in common carp polyculture through a combination of experiments and trophic web modeling. We conducted an experiment in small fishponds of common carp polyculture reared with roach and perch and used Ecopath with Ecosim software to characterize the food web. Two replicates of 3 treatments were performed: a semi-extensive pond with low fish density and no formulated feed, an intensive pond with twice the fish density and formulated feed and an intensive pond coupled with a planted lagoon. Ten trophic groups were defined to describe the food web. The modeling procedure enabled us to estimate the diets of each trophic group. The fish diet in fed and non-fed treatments differed greatly since the carp fed mainly on formulated feed when available. The roach exhibited trophic plasticity by adapting their diet to the available resources. The benthic macroinvertebrates and zooplankton were preyed upon intensively; they became the limiting factors for fish production and depended on phytoplankton availability. Detritus and phytoplankton were the main sources of nutrients in all treatments but were not used efficiently. These results provide several insights for improving polyculture. In particular, they promote better management of zooplankton and macroinvertebrates as food sources for target species and a better balance in fish assemblages for more efficient use of resources.","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69593521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shellfish growers routinely observe fish and invertebrates interacting with their aquaculture gear. To quantitatively assess these interactions, underwater action cameras (GoPro®) were used to document fish and invertebrate activity in and around floating oyster bags, cages, and a natural marsh habitat on an oyster farm in the Little Egg Harbor region of Barnegat Bay, New Jersey, USA, in 2018. A free and open-source event-logging software was used to analyze video files. A total of 21 species from 4 phyla were identified across all days and sites. Nekton were quantified from continuously recorded video using the MaxN abundance metric, defined as the maximum number of individuals of a given species present within each 1 min segment of video. Species of both ecological and economic importance in the local ecosystem used the 3 intertidal habitats. Abundance and community composition observed around oyster cages differed from that around floating oyster bags and marsh edge; the latter 2 habitats were not significantly different. Juvenile fish were frequently observed, suggesting that the oyster farm may provide similar natural history functions as other natural marsh habitat.
{"title":"A fish’s-eye-view: accessible tools to document shellfish farms as marine habitat in New Jersey, USA","authors":"JP Shinn, DM Munroe, J. Rose","doi":"10.3354/AEI00407","DOIUrl":"https://doi.org/10.3354/AEI00407","url":null,"abstract":"Shellfish growers routinely observe fish and invertebrates interacting with their aquaculture gear. To quantitatively assess these interactions, underwater action cameras (GoPro®) were used to document fish and invertebrate activity in and around floating oyster bags, cages, and a natural marsh habitat on an oyster farm in the Little Egg Harbor region of Barnegat Bay, New Jersey, USA, in 2018. A free and open-source event-logging software was used to analyze video files. A total of 21 species from 4 phyla were identified across all days and sites. Nekton were quantified from continuously recorded video using the MaxN abundance metric, defined as the maximum number of individuals of a given species present within each 1 min segment of video. Species of both ecological and economic importance in the local ecosystem used the 3 intertidal habitats. Abundance and community composition observed around oyster cages differed from that around floating oyster bags and marsh edge; the latter 2 habitats were not significantly different. Juvenile fish were frequently observed, suggesting that the oyster farm may provide similar natural history functions as other natural marsh habitat.","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69593550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Ferriss, K. Veggerby, M. Bogeberg, L. Conway-Cranos, L. Hoberecht, P. Kiffney, K. Litle, J. Toft, B. Sanderson
{"title":"Characterizing the habitat function of bivalve aquaculture using underwater video","authors":"B. Ferriss, K. Veggerby, M. Bogeberg, L. Conway-Cranos, L. Hoberecht, P. Kiffney, K. Litle, J. Toft, B. Sanderson","doi":"10.3354/aei00418","DOIUrl":"https://doi.org/10.3354/aei00418","url":null,"abstract":"","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69594043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spatial response of hard- and mixed-bottom benthic epifauna to organic enrichment from salmon aquaculture in northern Norway","authors":"K. Dunlop, A. Harendza, R. Bannister, N. Keeley","doi":"10.3354/aei00419","DOIUrl":"https://doi.org/10.3354/aei00419","url":null,"abstract":"","PeriodicalId":8376,"journal":{"name":"Aquaculture Environment Interactions","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69594270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：