Aquatic Living Resources最新文献

{"title":"Gravel washing as a lacustrine spawning habitat restoration method for smallmouth bass","authors":"Daniel M. Glassman ,&nbsp;Benjamin L. Hlina ,&nbsp;Lisa A. Donaldson ,&nbsp;Alice E.I. Abrams ,&nbsp;Jordanna N. Bergman ,&nbsp;Auston Chhor ,&nbsp;Lauren J. Stoot ,&nbsp;Steven J. Cooke","doi":"10.1051/alr/2024010","DOIUrl":"10.1051/alr/2024010","url":null,"abstract":"<div><div>Smallmouth bass (<em>Micropterus dolomieu</em>) spawn on gravel and cobble in the littoral zone of lakes that may become degraded by the presence of fine sediments and decomposing organic matter. Substrate size and composition have been identified as important variables for nest site selection by male smallmouth bass. We tested whether ‘cleaning’ substrate by removing sediment with a pressure washer would increase the number of bass nests or the average total length (mm) of nesting smallmouth bass in selected areas of Big Rideau Lake, Ontario, Canada the following year using a before-after control-impact design. Treatment was not a significant predictor of nest abundance or average male length. Considering the strength of the experimental design it is reasonable to conclude that this intervention failed to enhance spawning substrate for smallmouth bass. Understanding the factors that maintain productive spawning sites for smallmouth bass is important to restoration effectiveness and determining where habitat enhancement will provide the greatest benefits.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diet composition and feeding habits of yellowfin tuna Thunnus albacares (Bonnaterre, 1788) from the Bay of Bengal","authors":"Silambarasan Krishnan ,&nbsp;Tiburtius Antony Pillai ,&nbsp;John Chembian Antony Rayappan ,&nbsp;Tharumar Yagappan ,&nbsp;Jeyabaskaran Rajapandian","doi":"10.1051/alr/2024008","DOIUrl":"10.1051/alr/2024008","url":null,"abstract":"<div><div>Though yellowfin tuna (<em>Thunnus albacares</em>) is one of the important fishery resources in the Bay of Bengal, knowledge on its ecology, diet composition and feeding habits are limited from this area. In view of that, present study focuses on the diet composition and feeding habits of yellowfin tuna (YFT) hooked during exploratory longline survey conducted in the Indian EEZ of the Bay of Bengal during 2019–2021. A total of 213 specimens in the length range of 42.0 to 171.0 cm fork length (FL) were examined, of which 28.2% were empty while the remaining 71.8% contained at least one prey item. The modified Costello graphical method shows a wide range of prey items, with a few prey species that are dominant and can be found in high densities in the Bay of Bengal. Due to the fact that this apex predator is a generalist feeder, this might be the case. Cluster analysis based on the <em>%IRI</em> (Index of relative importance) identified two size groups. YFT with smaller (&lt;80 cm FL) is one group. Crustaceans was the most frequently eaten prey in that group followed by cephalopods and teleostea. The second group consists of two length groups medium (81–120 FL), and larger (&gt;120 FL), Cephalopods were the dominant prey items of this group and accounts for 62.0% in <em>%IRI</em> followed by teleostea 31.3% of the diet. Cephalopods (<em>Sthenoteuthis oualaniensis</em>) were the primary food consumed in all the size groups, followed by crustaceans (<em>Charybdis smithii</em>) and Teleost fishes (<em>Cubiceps pauciradiatus</em>). The dietary breadth and the occurrence of empty stomachs were significantly related to size of the yellowfin tuna. With increasing body size, diet breadth gradually increased while the percentage of empty stomachs declined. The yellowfin tuna diet does not vary significantly during the seasons. However, cephalopods were found in 53.5% of the IRI in their diet. Furthermore, there were notable seasonal changes in the percentage of empty stomachs, with the highest percentage observed during the monsoon season (38.3%).</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of fisheries and aquaculture products in ensuring sustainable and healthy food consumption in France","authors":"Jean-François Dewals ,&nbsp;Fabienne Daures ,&nbsp;Pascal Le Floc’h","doi":"10.1051/alr/2024014","DOIUrl":"10.1051/alr/2024014","url":null,"abstract":"<div><div>The consumption of Fisheries and Aquaculture Products (FAP) can contribute to the transition of our food system towards greater sustainability. However, in order to implement effective food policies aimed at promoting sustainable FAP consumption, data on individual consumption behavior are lacking. Based on a consumer survey carried out on the French market in 2023, the aim of this article was to gain a deeper understanding of the current consumption patterns in place in France in order to identify potential levers for aligning French FAP consumption with public health and resource conservation objectives. Using an ordered probit model and Welch’s <em>t</em>-tests, our results show that French FAP consumption is currently driven by few people (the elderly, connoisseurs, and high-income households). In line with our findings, actions are proposed to guide French FAP consumers towards more sustainable behavior. In particular, we discuss the need to inform and educate consumers better. The promotion of local “under-utilized” species, the integration of environmental considerations into existing food policies, or even the need to exploit “out-of-home” consumption venues to promote sustainable FAP consumption among occasional consumers are discussed as interesting possibilities.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epiphytic macroalgae of maricultured Sargassum and their potential utilizations","authors":"Binbin Chen ,&nbsp;Huawei Zhang ,&nbsp;Zengling Ma ,&nbsp;Mingjiang Wu","doi":"10.1051/alr/2024009","DOIUrl":"10.1051/alr/2024009","url":null,"abstract":"<div><div>Epiphytism commonly occurs in marine benthic macroalgae and seagrass communities under natural conditions and those of mariculture. This can greatly obstruct the cultivation of commercial seaweeds and ultimately impacts the seaweed aquaculture industry negatively. Against a background of climate change and a rapidly increasing market demand, the commercial <em>Sargassum</em> species is experiencing increasing challenges posed by epiphytic macroalgae. Severely reduced growth, lower quality, the emergence of diseases, and the ultimate death of the algae can lead to a commercial loss. Attempts to limit epiphytic macroalgae in aquaculture have so far been inefficient. However, epiphytic macroalgae are also rich in nutritional compounds and their relative biomass could be used as efficiently as the cultivated seaweed. As epiphytes cannot effectively be controlled by the current physical, chemical, and other methods in most cases, the perspective of comprehensive utilization could be an alternative over complete prevention and control by traditional methods. Compared to the existing strategies for controlling the growth and spread of epiphytes in seaweed aquaculture, the integrated and indiscriminate harvest and utilization of epiphytic macroalgae as fertilizer, animal food additive agents, as well as the development of biodegradable materials, might prove to be alternative valorization. However, the implementation of epiphytic macroalgae utilizations still needs to overcome the technical obstacles.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ecological niche and life-history traits of redbelly tilapia (Coptodon zillii, Gervais 1848) in its native and introduced ranges","authors":"Temesgen Tola Geletu ,&nbsp;Shoujie Tang ,&nbsp;Ying Xing ,&nbsp;Jinliang Zhao","doi":"10.1051/alr/2023030","DOIUrl":"10.1051/alr/2023030","url":null,"abstract":"<div><p>Redbelly tilapia (<em>Coptodon zillii</em>) is a member of a group of fishes in the Cichlidae family endemic to the northern half of Africa and the Middle East. In the literature, the name <em>C. zillii</em> is mostly associated with a negative impact on the ecosystem and biodiversity in the areas to which it was introduced. In its native range, it is not a much-appreciated fish species from both fisheries and aquaculture perspectives because of its small size and difficulty to catch when compared to Nile tilapia, <em>Oreochromis niloticus</em>. Although <em>C. zillii</em> has several desirable aquaculture traits such as feeding at lower trophic levels, high fecundity, saltwater and cold tolerance, the attempts to capitalize on this potential are lacking. Moreover, comprehensive studies that characterize its ecological niche in its native range and adaptive mechanisms of invasiveness in introduced areas are also limited. Notwithstanding, it is a species of invasion concern that requires continuous monitoring and implementation of mitigation actions in non-native regions. Compilation of information regarding the environmental requirements, feeding, and reproductive biology of <em>C. zillii</em> may serve as a starting ingredient for further research and management of its invasiveness, which is highly required in the face of freshwater ecosystem modifications as a result of climate change. This paper also addresses the current state and potential of <em>C. zillii</em> for utilization in capture fisheries and fish farming.</p></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hatching success and growth of Snakehead (Channa lucius Cuvier, 1831) larvae and fry at different pH levels","authors":"Tien Hai Ly ,&nbsp;Cheng-Ting Huang ,&nbsp;Po-Tsang Lee ,&nbsp;Van Thanh Vo ,&nbsp;Doan Xuan Diep","doi":"10.1051/alr/2023023","DOIUrl":"10.1051/alr/2023023","url":null,"abstract":"<div><p>Snakehead (<em>Channa lucius</em> Cuvier, 1831) is a species of potential aquaculture interest in the Mekong Delta, Vietnam. However, their optimum environmental conditions have yet to be determined. This study aims to study the hatching success and larval and fry growth of <em>C. lucius</em> at six pH levels (5.5, 6.0, 6.5, 7.0, 7.5, and 8.0). Two consecutive experiments were conducted. Experiment 1 focused on incubating eggs and nursing the yolk sac larvae, and was carried out in aquariums. The monitoring included incubation time (IT), hatching rate (HR), and deformation rate of the newly hatched larvae (DR). Larvae were also collected daily during nursing for growth determination. In Experiment 2, four-day-old fry after hatching from experiment 1 were reared in plastic tanks with live feeds for 30 days. Growth was checked every ten days, while survival rate (SR) and coefficient of variation (CV) were determined at the end of the experiment. pH 5.5–8.0 was favorable for incubation, larvae, and fry, as assessed through good indicators of IT, HR, DR, and larval length and weight growths, as well as length and weight growths, SR, and CV of fry. Furthermore, the lowest DR (0.33%) was at pH 5.5, while except for pH 7.0, the shortest IT (41.1 h) significantly differed from that at higher pH levels (<em>p</em> &lt; 0.05), and the highest larval growth parameters were at pH 5.5–6.0; meanwhile, pH 5.5–6.5 supported a better life for fry, as showed by the significantly higher growth parameters (<em>p</em> &lt; 0.05) and SR and CV improvements in fry after 30 rearing days. Overall, pH 5.5–8.0 was suitable for the early stages of <em>C. lucius</em>, in which pH 5.5–6.0 was better for incubation and larval growth and pH 5.5–6.5 was better for fry development.</p></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Balancing environmental concerns and efficiency in Mediterranean fisheries: Economics of production with a look at market trends","authors":"Alberto Ceccacci ,&nbsp;Luca Mulazzani ,&nbsp;Giulio Malorgio","doi":"10.1051/alr/2024006","DOIUrl":"10.1051/alr/2024006","url":null,"abstract":"<div><p>The fishing sector in the Adriatic Sea is exposed to stricter regulations due to the negative ecological impact of large-scale fisheries, while increasing socio-economic challenges threaten the profitability of the industry. We apply Stochastic frontier and Price formation analysis to the <em>rapido</em> fishery of Chioggia (Italy) in order to investigate potential strategies to enhance the economic performance of the fishery, considering both effort restrictions and market trends. The use of two different methodological approaches emphasizes the need for a comprehensive and flexible approach to fisheries management, taking into account seasonal fluctuations in efficiency and average prices. The results reveal that efficiency variations are significantly influenced by seasonal factors and stock availability, thus indicating a limited capacity of fishers to adapt to changing market conditions. We emphasize the importance of flexible scheduling of fishing days and discuss the opportunity for implementing mixed management systems incorporating a Total Allowable Catch or quotas.</p></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maximum entropy modelling to identify optimal locations for an IMTA system comprising Sparus aurata, Mytilus galloprovincialis and Ulva rigida on Europe’s Atlantic coastline","authors":"Conchúr Hughes ,&nbsp;Jonathan W. King","doi":"10.1051/alr/2024002","DOIUrl":"10.1051/alr/2024002","url":null,"abstract":"<div><p>Meeting the resource demand for an increasing human population has led to the emergence of the aquaculture industry as the fastest growing sector for food production worldwide. Modern finfish aquaculture has raised environmental concerns and, to address this, Integrated Multi-Trophic Aquaculture (IMTA) has gained popularity as a means to minimise environmental impacts. This is done by culturing extractive species alongside fed species to utilise excess nutrients and enhance their own growth. The current study, based within the Atlantic Area of Europe, identified suitable habitats for the three species <em>Sparus aurata, Mytilus galloprovincialis</em> and <em>Ulva rigida</em>, for use in a new IMTA system. Models were created using MaxEnt software and input into GIS software (ArcMap 10.8.1) for analysis. For all species, the AUC results in the model were &gt;0.9, with values of 0.931 (<em>S. aurata</em>), 0.928 (<em>M. galloprovincialis</em>) and 0.939 (<em>U. rigida</em>), demonstrating significant predictive power. Jackknife testing of the model for each species identified the mean sea surface temperature (°C) and Chlorophyll A (mg m^–3) concentration as the two most important variables. The model showed that areas of &gt;50% suitability could be found throughout the study area, although the most suitable sites were in coastal areas in more southern latitudes. To identify the feasibility of establishing an IMTA system in different areas, the shipping density, MPA status and the locations of harbours were added to the maps for further consideration. Using this study, and the species-specific information identified by the model, the aquaculture industry will be better equipped to identify potential IMTA sites and integrate these systems into the EU market for sustainable production.</p></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the coastal reef fishery pressure in a South Pacific Island (Bora-Bora, French Polynesia)","authors":"Hugo Gatouillat ,&nbsp;Emma Gairin ,&nbsp;Lana Minier ,&nbsp;Alannah Gourlaouen ,&nbsp;Camille Carpentier ,&nbsp;Cécile Berthe ,&nbsp;Anatole Teraaitepo ,&nbsp;Tehani Maueau ,&nbsp;Vincent Sturny ,&nbsp;Tamatoa Bambridge ,&nbsp;René Galzin ,&nbsp;David Lecchini","doi":"10.1051/alr/2024001","DOIUrl":"10.1051/alr/2024001","url":null,"abstract":"<div><p>In the context of the general overexploitation of South Pacific reef fisheries, there is a global push to precisely define fishery parameters such as fishing effort, annual landings, and exploitation levels. In Bora-Bora, several surveys were performed to define the fishing grounds and the fishing effort of the reef fishery for the first time. Maps of the fishing grounds under different fishing pressures were created for the Bora-Bora reef fishery. The average fishing effort throughout the lagoon was 40 trips week⁻¹ km⁻². Annual landings were estimated following two different methods: school participatory surveys and landing based on the catch per unit effort. These estimations were used to determine that the maximum sustainable yield of the island's fisheries was 6.5 tons km⁻² year⁻¹. the reported annual yield in 2022 was 5.35 tons km⁻² year⁻¹, under the estimated maximum sustainable yield. The level of exploitation of the fisheries was also estimated based on the catch size composition of the ten most fished species. This revealed that fishing is responsible for more than 50% of fish mortality in six of the ten studied species, and that catch length could be increased to optimize both catches and biomass. Overall, the Bora-Bora reef fishery may be experiencing growth overfishing (i.e., the catching of fish that are too small to maximise biological sustainability and economical yield), which can endanger stock recruitment in the future if no actions are taken.</p></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of critical essential habitat for demersal fish in the Gulf of Guinea","authors":"Crespin Luc Quenum ,&nbsp;Yeslem El Vally ,&nbsp;Joanny Tapé ,&nbsp;Jérôme Guitton ,&nbsp;Ebenezer Francis Ekuban ,&nbsp;N’Goran David Kouakou ,&nbsp;Olivier Le Pape","doi":"10.1051/alr/2024005","DOIUrl":"10.1051/alr/2024005","url":null,"abstract":"<div><p>Habitats of three marine fish species of major interest (<em>Epinephelus aeneus</em>, <em>Pseudotolithus senegalensis</em>, and <em>Pagellus bellottii</em>) at both juvenile and adult life stages were identified and mapped in the western part of the Gulf of Guinea. Habitat suitability models (HSMs) were designed to quantify species- and stage-specific fish densities from scientific survey data collected for the last 40 years according to two environmental descriptors (bathymetry, distance to river mouth) and accounting for temporal contrasts. Delta general linear models were selected to fit with the 0-inflated distribution of the fish density data. Despite their high residual deviance, both the prediction accuracy and robustness of these HSMs were satisfactory. HSMs showed a strong influence of bathymetry on stage-specific fish distribution and a lower and non systematic influence of proximity to river mouths. The spatial distribution of juveniles of <em>E. aeneus</em> and <em>P. senegalensis</em> evidenced their concentration in shallow coastal nurseries. The adults of <em>P. senegalensis</em> were also located in nearshore habitats under estuarine influence, whereas adults of <em>E. aeneus</em> were spread towards deeper waters. <em>P. bellottii</em> did not rely on coastal fringes at juvenile or adult stages. Finally, model outputs showed a decrease in abundance in recent decades for all species at both life stages. These HSMs and maps reveal the importance of the coastal fringe as a critical essential habitat for two of the three studied species and the usefulness of space-based management measures to maintain populations and ensure sustainable fishing exploitation.</p></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"37 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}