{"title":"Sea-lice regulation in salmon-farming countries: how science shape policies for protecting wild salmon","authors":"Irja Vormedal","doi":"10.1007/s10499-023-01270-w","DOIUrl":"10.1007/s10499-023-01270-w","url":null,"abstract":"<p>The proliferation of sea lice from aquaculture may substantially aggravate the decline in marine survival of wild salmons. In some countries, this risk has motivated regulators to adopt more precautionary policies; in other countries, however, regulators have disputed the need for stricter regulation. This article compares the sea-lice regulations of Norway, Scotland, Ireland, and Canada (British Columbia), showing how varying interpretations of the science on farm–wild interactions have shaped efforts to scale up regulatory measures for mitigating health hazards and mortality risks for wild salmon. In Norway and Scotland, scientific consensus has expedited cooperation between research and governing institutions and facilitated ambitious policy reforms. In Ireland and Canada, by contrast, scientific controversy around the scale of farm-lice impacts on wild salmon populations has led to conflict and disagreement between researchers and policymakers, and to failure of reform attempts desired by wild salmon stakeholders.</p>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"32 3","pages":"2279 - 2295"},"PeriodicalIF":2.2,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-023-01270-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47713501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Molecular characterization of Rab5A, and involvement in innate immunity in Yellow River Carp Cyprinus carpio","authors":"Guilan Di, Zeyuan Ma, Mingmei Jiang, Yu Zhang, Ning Wang, Xinhua Chen","doi":"10.1007/s10499-023-01223-3","DOIUrl":"10.1007/s10499-023-01223-3","url":null,"abstract":"<div><p>Rab5A play important roles in regulating trafficking organelles, especially in phagosome formation. In the present study, full-length cDNA sequences of Rab5A were cloned from Yellow River Carp <i>Cyprinus carpio</i>, which was designated as <i>Cc</i>Rab5A. The full-length cDNA of the <i>Cc</i>Rab5A cDNA sequence is 2434 bp and included an open reading frame (ORF) encoding 216 amino acids polypeptide with an estimated molecular weight of 23.47 kDa. Bioinformatics analysis showed that the <i>Cc</i>Rab5A protein was highly conserved during evolution. <i>Cc</i>Rab5A's deduced amino acid sequence showed high identity to <i>Cyprinus carpio</i> (99.54%) in comparison. The guanine-base binding motif (G), phosphate/magnesium-binding motif (PM), and Rab family motif (Rab F) of <i>Cc</i>Rab5A are highly conserved among various species, but the N- and C-terminal regions were hypervariable, according to the results of multiple sequence alignment and phylogenetic analysis. Additionally, 11 tissues of Yellow River Carp were examined using Real-time Fluorescence Quantitative PCR (qRT-PCR) to determine the expression levels, with the highest expression levels in head kidney and blood. Followed by heart, liver, muscle, brain, gill, skin, spleen and intestine; The expression level in body kidney was the lowest. Yellow River Carp was immunized with <i>Aeromonas hydrophila</i> and Spring viremia of carp virus (SVCV) respectively, and the expression changes of <i>Cc</i>Rab5A in gill, spleen, liver, intestine and skin of Yellow River Carp were detected. The results showed that the expression level of the gene was obviously up-regulated at different time points. The eukaryotic recombinant plasmids of <i>Cc</i>Rab5A, pEGFP-N3 were constructed and transfected into GCO cells for subcellular localization. The results showed that <i>Cc</i>Rab5A were mainly distributed in nuclear membrane and various endosome membranes. These results showed that <i>Cc</i>Rab5 were involved in viral and bacterial infection in the immune response of Yellow River Carp<i>.</i></p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"32 2","pages":"1427 - 1451"},"PeriodicalIF":2.2,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41754232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
El-Sayed Hemdan Eissa, Walaa K. Bazina, Yasmin M. Abd El-Aziz, Nadia A. Abd Elghany, Wesam A. Tawfik, Monga I. Mossa, Ola Hasan Abd El Megeed, Nadia N. B. Abd El-Hamed, Adel F. El-Saeed, Ehab El-Haroun, Simon J. Davies, Oliver J. Hasimuna, Moaheda E. H. Eissa, Hala S. Khalil
{"title":"Nano-selenium impacts on growth performance, digestive enzymes, antioxidant, immune resistance and histopathological scores of Nile tilapia, Oreochromis niloticus against Aspergillus flavus infection","authors":"El-Sayed Hemdan Eissa, Walaa K. Bazina, Yasmin M. Abd El-Aziz, Nadia A. Abd Elghany, Wesam A. Tawfik, Monga I. Mossa, Ola Hasan Abd El Megeed, Nadia N. B. Abd El-Hamed, Adel F. El-Saeed, Ehab El-Haroun, Simon J. Davies, Oliver J. Hasimuna, Moaheda E. H. Eissa, Hala S. Khalil","doi":"10.1007/s10499-023-01230-4","DOIUrl":"10.1007/s10499-023-01230-4","url":null,"abstract":"<div><p>The present study examined the impacts of varying amounts of selenium nanoparticles (Se-NPs) as a natural antioxidant and metabolic regulator on growth performance, antioxidant capacity, digestive enzymes and immune resistance of <i>Oreochromis niloticus</i> challenged to <i>Aspergillus flavus</i> infection. For 60 days, fish were fed the experimental diet of 30% crude protein up to apparent satiation three times a day. Se-NPs were added to the control diet at different levels of 0.0 (control), 0.5 (T1), 1.0 (T2) and 1.5 (T3) mg/kg diet to fed monosex Nile tilapia fingerlings with average initial weight (4.5 ± 0.5 g). Fish were randomly distributed in 12 tanks 100 L at a density of 20 fish per tank after 2-week acclimation to represent four treatments in triplicates. The results indicated that the growth indices, feed efficiency and survival rate were significantly enhanced (<i>P</i> < 0.05) by incorporating Se-NPs up to 1 mg/kg diet. Furthermore, the haemato-biochemical parameters, digestive enzymes activity and antioxidant capacity of the fish were significantly improved (<i>P</i> < 0.05) at T2. When the fish were challenged with <i>Aspergillus flavus</i>, a decreasing mortality rate was observed, which clearly shows that selenium nanoparticles boosted the fish’s immune response at T2. The intestinal morphology as villus length, villus width, muscular fibres layer thickness and absorption intestinal zone after challenged with <i>A. flavus</i> infection were considerably enhanced (<i>P</i> < 0.05) by incorporating all Se-NP levels. Histopathological score significantly improved (<i>P</i> < 0.05) for the hepatopancreatic, intestinal, gills and muscle tissues at T2. The present study concludes that selenium nanoparticles up to 1.0 mg/kg diet can be efficiently used in tilapia feed to help boost fish production, immune system response and histopathological parameters.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"32 2","pages":"1587 - 1611"},"PeriodicalIF":2.2,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-023-01230-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48107640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Beta-defensin1 derived from Ctenopharyngodon idella exerts anti-Vibrio mimics effects in vitro and in vivo via a multi-target mechanism of action","authors":"Jiaojiao Chang, Xinyue Chang, Xiaozhen Yue, Shoulin Cao, Wenping Zhao, Jinnian Li","doi":"10.1007/s10499-023-01256-8","DOIUrl":"https://doi.org/10.1007/s10499-023-01256-8","url":null,"abstract":"","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48130226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nishan Raja Raja, Nila Rekha Peter, Sandeep Kizhakkekarammal Puthiyedathu, Chandrasekar Vasudevan, Soumyabrata Sarkar, Albin Sunny
{"title":"Fuzzy analytic hierarchy process (FAHP) for identification of potential cage farming sites for aqua tourism development in Muttukadu Lagoon, Chennai, India","authors":"Nishan Raja Raja, Nila Rekha Peter, Sandeep Kizhakkekarammal Puthiyedathu, Chandrasekar Vasudevan, Soumyabrata Sarkar, Albin Sunny","doi":"10.1007/s10499-023-01259-5","DOIUrl":"https://doi.org/10.1007/s10499-023-01259-5","url":null,"abstract":"","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45716055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integration of probiotics in aquaponic systems: an emerging alternative approach","authors":"N. Kasozi, Gerald Iwe, J. Walakira, S. Langi","doi":"10.1007/s10499-023-01261-x","DOIUrl":"https://doi.org/10.1007/s10499-023-01261-x","url":null,"abstract":"","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47823093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Yiğit, Sebahattin Ergün, Yesim Buyukates, A. Ates, H. G. Ozdilek, S. Acar
{"title":"Assessment of physical carrying capacity of a mariculture zone designated in the Aegean Sea","authors":"M. Yiğit, Sebahattin Ergün, Yesim Buyukates, A. Ates, H. G. Ozdilek, S. Acar","doi":"10.1007/s10499-023-01268-4","DOIUrl":"https://doi.org/10.1007/s10499-023-01268-4","url":null,"abstract":"","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45354791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}