Aquatic Living Resources最新文献

{"title":"Regional disparities and dynamic evolution of competitiveness of marine fish aquaculture industry − A study of China","authors":"Olivier Thebaud,&nbsp;Xun Cao ,&nbsp;Xin Shen","doi":"10.1051/alr/2023027","DOIUrl":"10.1051/alr/2023027","url":null,"abstract":"<div><div>China has emerged as a major player in marine fish aquaculture, contributing significantly to economic, social, and environmental development. Analyzing the competitive evolution pattern of regional marine aquaculture is critical to promote the synergistic development of this industry. The “vertical and horizontal” scatter degree method was employed to examine the dynamic evolution trend and spatial non-equilibrium of the competitiveness level of marine fish aquaculture in nine Chinese provinces and cities. Using the <em>σ</em>-convergence model and absolute <em>β</em>-convergence model, the evolution of absolute differences was characterized. The study reveals the existence of stage and regional characteristics of marine fish aquaculture in the nine provinces and cities, with an observable gradient effect. The overall difference is observed to decrease, indicating a trend towards regional synergistic development in the marine fish aquaculture industry. This finding holds practical significance and theoretical value in promoting the growth of the industry.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"36 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143306547","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":"Genetic diversity and structure assessment of Macrobrachium nipponense populations: implications for the protection and management of genetic resources","authors":"Carlos Saavedra,&nbsp;Yiwei Xiong ,&nbsp;Sufei Jiang ,&nbsp;Lijuan Zhang ,&nbsp;Jisheng Wang ,&nbsp;Wenyi Zhang ,&nbsp;Shubo Jin ,&nbsp;Yongsheng Gong ,&nbsp;Yan Wu ,&nbsp;Hui Qiao ,&nbsp;Hongtuo Fu","doi":"10.1051/alr/2023002","DOIUrl":"10.1051/alr/2023002","url":null,"abstract":"<div><div>This article presents a study of D-loop sequences to characterize the genetic diversity of wild <em>Macrobrachium nipponense</em> populations in Yixing natural waters including two reservoirs (Hengshan reservoir, HS; Youche reservoir, YC), 3 brooks (Linjin Dang, LJD; Magong Dushan Dang, MDD; Yangshan Dang, YSD) and 3 shallow lakes (Dongjiu lake, DJ; Xijiu lake, XJ; Tuanjiu lake, XJ), and compared the genetic differentiation and population structure with wild populations of Taihu Lake (TH), Yangtze River (YZ), and the main local artificially bred varieties “Taihu No. 2” (TH-2). A 747 bp D-loop sequence fragment was amplified in 321 individuals and the results exhibited a higher content of A+T (80.03%) than C+G (19.97%). A total of 110 haplotypes were identified. The <em>h</em> and π value proved the diversity of these populations was at the same level with high genetic diversity. TH-2 and YZ showed remarkable diversity, and XJ is even better. <em>Fst</em> estimates suggested that YZ and TH-2 were significant differentiation with other Yixing populations (<em>P</em> &lt; 0.05). Three populations from shallow lake (DJ, XJ and TJ) displayed significant differentiated with the left Yixing ones (<em>P</em> &lt; 0.05). The pairwise genetic distance, as well as haplotype network results, also suggested that all these 11 populations did not diverge at the species level (&lt;15%). The <em>P</em> values of Tajima's <em>D</em> and Fu <em>Fs</em> were relatively greater than 0.1 (<em>P</em> &gt; 0.1) and the nucleotide mismatch distribution analysis showed multiple peaks, giving a conclusion that the populations did not exhibited expansion. All these results suggested that TH-2 and YZ have remarkable diversity, and the germplasm resources and genetic diversity of <em>M. nipponense</em> in Yixing are very good and are suitable for original materials of breeding.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"36 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824549","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":"How fisheries can support a small island economy in pandemic times: the Seychelles case","authors":"Olivier Thebaud,&nbsp;Patrice Guillotreau ,&nbsp;Sharif Antoine ,&nbsp;Kevin Bistoquet ,&nbsp;Emmanuel Chassot ,&nbsp;Karine Rassool","doi":"10.1051/alr/2023020","DOIUrl":"10.1051/alr/2023020","url":null,"abstract":"<div><div>The COVID-19 pandemic has depressed the world economy to a magnitude and timeliness that could hardly be predicted by economists. Because of remoteness and a lack of resources, small island developing states (SIDS) are often considered more vulnerable than others to external shocks such as weatherization or disease. In 2020, the Republic of Seychelles has suffered a 70% collapse of foreign visitors, while tourism represents a key pillar of the economy with two thirds of its Gross Domestic Product and employment. The fishery-related industries have nonetheless resisted to this economic shock and become more prominent, with a foreign-owned tuna fleet supplying the local canning plant, main provider of private jobs and trade in the archipelago. This research attempts to forecast the economic effects of several scenarios affecting both fishing and tourism activities in a small island economy. It shows that fish-related industries can represent a resilient contributor to the domestic economy as long as natural stocks are sustainably managed.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"36 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824994","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":"Effect of the antioxidant N-acetylcysteine on the depuration of the amnesic shellfish poisoning toxin, domoic acid, in the digestive gland of the king scallop Pecten maximus","authors":"Pierre Boudry,&nbsp;Jean Vanmaldergem,&nbsp;José Luis García-Corona,&nbsp;Margot Deléglise,&nbsp;Caroline Fabioux,&nbsp;Hélène Hegaret","doi":"10.1051/alr/2023011","DOIUrl":"10.1051/alr/2023011","url":null,"abstract":"<div><div>Domoic acid (DA) is a potent neurotoxin produced by worldwide distributed diatoms of the genus <em>Pseudo-nitzchia</em> (PSN) and is responsible for Amnesic Shellfish Poisoning (ASP) in humans. King scallop <em>Pecten maximus,</em> a bivalve species of high commercial interest, is regularly subjected to blooms of <em>Pseudo-nitzschia</em> sp., thus accumulating and retaining high levels of DA for extended periods, leading to prolonged fisheries and aquaculture closures and important economic losses following increasingly recurrent toxic PSN blooms. The underlying mechanisms behind this accumulation and long toxin retention remain poorly understood so far. Fishermen and the aquaculture industry ask for methods to accelerate DA depuration in contaminated scallops, which has led to investigate the effect of some substances such as the antioxidant N-Acetylcysteine (NAC), which was previously found to improve up to four-fold DA depuration in <em>P. maximus</em> adductor muscle. Our study investigated the potential of NAC to accelerate DA depuration in all scallop tissues, including the digestive gland (DG), where most of the toxin is accumulated. Twenty-four contaminated adult scallops were collected following a toxic <em>P. australis</em> bloom in the Bay of Brest (France) and half were treated with the antioxidant NAC (250 mg L⁻¹) for 6 days. HPLC toxin quantification analyses did not revealed any significant differences in the DA burdens in the DG between treated scallops and the control group. DA amounts in the adductor muscle and gonads were below the HPLC detection limit in both groups. Our results revealed that NAC does not thus appear as a commercially suitable solution for fisheries and aquaculture industries as DA depuration enhancer in the tested conditions.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"36 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57825175","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":"Genetic parameters and response to selection for thermal tolerance, summer survival and growth in hybrid oyster (Crassostrea gigas ♀ × C. angulata ♂)","authors":"Pierre Boudry,&nbsp;Gaowei Jiang ,&nbsp;Chengxun Xu ,&nbsp;Qi Li","doi":"10.1051/alr/2023026","DOIUrl":"10.1051/alr/2023026","url":null,"abstract":"<div><div>The Pacific oyster <em>Crassostrea gigas</em> is the most commonly farmed mollusks worldwide, while its production has been hindered by massive mortalities linked to high temperatures. Selective breeding focusing on thermal tolerance is an attractive option for reducing the impact of massive mortalities, but the genetic basis underlying this trait is currently unknown. Hybridization between <em>C. gigas</em> and <em>C. angulata</em> was conducted and followed by one generation of family selection for thermal tolerance. The genetic parameters for thermal resistance, summer survival and growth and selection response were investigated by using 50 full-sibling families. The mean survival of all families ranged from 30.2 to 69.5%, reflecting the large variation of thermal tolerance in the hybrid population. The estimates of heritability for thermal tolerance were low to moderate, ranging from 0.19 ± 0.03 to 0.27 ± 0.05, confirmed that there is genetic basis for thermal tolerance. The phenotypic (<em>r</em> = 0.537, <em>P</em> &lt; 0.01) and genetic correlations (<em>r</em> = 0.546, <em>P</em> &lt; 0.01) between thermal tolerance and summer survival were positive and significant, while the phenotypic and genetic correlations between growth and survival (including thermal tolerance and summer survival) were positive but low (<em>P</em> &gt; 0.05). High response to selection (Δ<em>G</em> = 36.33%) was observed after one generation of selection for thermal tolerance, and there was also corresponding response (Δ<em>G</em> = 14.46%) for summer survival. These results demonstrated that genetic selection to improve summer survival of oyster may be facilitated by selecting highly heat-tolerant lines.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"36 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135316617","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":"Vascular plants of old cemeteries in the Lower Dnipro region (Southern Ukraine).","authors":"Nadiia Skobel, Ivan Moysiyenko, Barbara Sudnik-Wójcikowska, Iwona Dembicz, Maria Zachwatowicz, Maryna Zakharova, Oleksii Marushchak, Vikroria Dzerkal","doi":"10.3897/BDJ.11.e99004","DOIUrl":"10.3897/BDJ.11.e99004","url":null,"abstract":"<p><strong>Background: </strong>The dataset contains the records of vascular plant species occurrences and distribution in old cemeteries (OC) of the Lower Dnipro region (Southern Ukraine). The analysed cemeteries were located in different types of landscapes (agricultural, rural and urban) and represent various ways of using their area (currently used, closed, abandoned). The floristic list includes 440 species of vascular plants (437 <i>in situ</i>, 3 <i>ex situ)</i>. The dataset demonstrates a sozological (Red-lists species) value of old cemeteries in Southern Ukraine. The cemeteries constitute refuges of native, rare and steppe flora and play a role of steppe habitat islands in a landscape almost completely transformed to arable land or urbanised.</p><p><strong>New information: </strong>This is the first dataset which contains information about flora of old cemeteries in Lower Dnipro region (Southern Ukraine). The dataset comprises 2118 occurrences of vascular plants (440 species) recorded in the years 2008-2021 in 13 old cemeteries of the Lower Dnipro region. The dataset includes information about 85 occurrences of rare species (23 species <i>in situ</i>, 3 <i>ex situ</i>) and 652 occurrences of 117 steppe species.</p>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"15 1","pages":"e99004"},"PeriodicalIF":1.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10848810/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78343792","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":"Erratum to: Drivers of the spatial behaviour of the threatened thornback skate (Raja clavata)","authors":"Kenn Papadopoulo ,&nbsp;David Villegas-Ríos ,&nbsp;Gonzalo Mucientes ,&nbsp;Alina Hillinger ,&nbsp;Alexandre Alonso-Fernández","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"36 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143306047","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":"Erratum to: Drivers of the spatial behaviour of the threatened thornback skate (Raja clavata)","authors":"Kenn Papadopoulo, D. Villegas‐Ríos, G. Mucientes, A. Hillinger, A. Alonso‐Fernández","doi":"10.1051/alr/2023024","DOIUrl":"https://doi.org/10.1051/alr/2023024","url":null,"abstract":"This is an O Regarding the article [Papadopoulo K, Villegas-Ríos D, Mucientes G, Hillinger A, Alonso-Fernández A. 2023. Drivers of the spatial behaviour of the threatened thornback skate (Raja clavata). Aquat. Living Resour. 36: 21], published on July 25, 2023, This erratum corrects a mistake happened during the process of generating final proof of the paper. Indeed, in Table 1, the term “Probability of Presence” appearing twice in the first column of the second and the tenth lines are incorrect. It should be “Parametric coefficients”.","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57825053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Case study of innovations in commercial West African family fish farming that led to an ecological intensification","authors":"Delphine Lethimonnier ,&nbsp;Barbara Bentz ,&nbsp;Olivier Mikolasek ,&nbsp;Marc Oswald ,&nbsp;Joel Aubin","doi":"10.1051/alr/2022006","DOIUrl":"10.1051/alr/2022006","url":null,"abstract":"<div><div>Original fish-farming developments occur in west-central and south-western Côte d’Ivoire and in the forest area of the Republic of Guinea. <em>Oreochromis niloticus</em> and <em>Heterotis niloticus</em> are the main species produced in dam ponds with little or no feeding. Flooded rice is often grown here. The products supply local markets. In this article, we seek to understand the innovation trajectories that have led to three practices characteristic of these systems: ‘large tilapia production with little feed in dam ponds’, ‘tilapia and <em>Heterotis</em> polyculture’ and ‘flooded rice cultivation in ponds’. We then assess the contribution of these innovations to ecological intensification. The practices that form the basis for current developments were developed in the 1990s on family farms. The suitability of technical choices at certain key moments depended entirely on the fish farmers who judged the tested techniques on their own terms. Our assessment shows that these farmers have contributed positively to ecological intensification. They suffer from recurrent cash flow problems and have thus natural resources and ecological functions in their fish farming system: stocking density to make the best use of the natural trophic resources, improved by polyculture and additional rice production that is more efficient than traditional lowland rice production. The promotion of reliance on existing know-how and anchoring in local culture strengthen the contribution to these systems’ ecological intensification. The analysis shows that this development of integrated commercial fish farming in family farms questions ecological intensification and innovation in aquaculture.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"35 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824504","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":"Analyses of the composite yield per recruit model CYPR14 for inferring plausible fishing mortality targets of fish in the tropics","authors":"David Kaplan,&nbsp;Joseph Munyandorero","doi":"10.1051/alr/2022016","DOIUrl":"10.1051/alr/2022016","url":null,"abstract":"<div><div>Stocks' yield and size per recruit are widely used to provide fisheries management guidance. This study provides details for analyzing the composite (i.e. age-aggregated or stage-structured) yield per recruit (CYPR) model CYPR14, and proposes CYPR14 as a management tool for tropical fisheries. The fishing mortality rates maximizing CYPR (<em>F</em>_CYPR) and associated with the marginal increase in CYPR (<em>F</em>_0.1) and a target composite spawning potential ratio (CSPR; <em>F</em>_35%CSPR or <em>F</em>_40%CSPR) were suggested as candidate fishing mortality targets, provided assessments employ the delay-differential model underlying CYPR14. Using Monte Carlo (MC) simulations relying on growth parameters and natural mortality of Lake Tanganyika's <em>Lates stappersii</em> and Lake Victoria's <em>Lates niloticus</em>, CYPR14 analyses involving maximum survivorship or declining survivorship were carried out to show how <em>F</em>_CYPR, <em>F</em>_0.1, <em>F</em>_35%CSPR, and <em>F</em>_40%CSPR could be generated, given an age of knife-edge recruitment (<em>r</em>). Baseline MC employed <em>r</em> = 1 year and yielded mean annual rates of <em>F</em>_CYPR = 0.52, <em>F</em>_0.1 = 0.33, and <em>F</em>_35%CSPR = 0.51 for <em>L. stappersii</em> and <em>F</em>_CYPR = 0.23, <em>F</em>_0.1 = 0.14, and <em>F</em>_40%CSPR = 0.16 for <em>L. niloticus</em>. CYPR14 with maximum survivorship produced CYPR isopleths such that the CYPR maximized at an infinite <em>r</em> and finite, higher <em>F</em>. For CYPR14 involving a declining survivorship, the CYPR declined with increased <em>r</em> and maximized with innermost closed-loop contours at lower <em>F</em> and an optimal age. The CSPR isopleths from both types of CYPR14 analyses were first concave down, and the optimal age served as their inflection point. In terms of benchmarks based on the maximum sustainable yield and of proxies thereof, CYPR14 should be for its underlying delay-differential model what the age-structured pool models are for age-structured assessment models.</div></div>","PeriodicalId":55491,"journal":{"name":"Aquatic Living Resources","volume":"35 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57824758","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}