Fishery Bulletin最新文献

Quantifying the effects of sample size and species distribution on the precision and accuracy of abundance estimates from bottom-trawl surveys in the Gulf of Alaska 量化样本大小和物种分布对阿拉斯加湾底拖网调查丰度估计的精确度和准确性的影响

Fishery Bulletin Pub Date : 2024-08-09 DOI: 10.7755/fb.122.4.2

P. G. von Szalay, E. Laman, S. Kotwicki, Lewis A. K. Barnett, Kotaro Ono

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Quantifying the effects of sample size and species distribution on the precision and accuracy of abundance estimates from bottom-trawl surveys in the Gulf of Alaska: Supplemental Table 量化样本大小和物种分布对阿拉斯加湾底拖网调查丰度估算的精度和准确性的影响：补充表

Fishery Bulletin Pub Date : 2024-08-09 DOI: 10.7755/fb.122.4.2s

P. G. von Szalay

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Variation in otolith microchemistry for Lebranche mullet (Mugil liza) in southern Brazil and its potential use in identifying their nursery grounds 巴西南部鲻鱼（Mugil liza）耳石微化学变化及其在确定育苗场方面的潜在用途

Fishery Bulletin Pub Date : 2024-03-20 DOI: 10.7755/fb.122.1-2.2

V. Lemos, Ana C. G. Mai, Ana C. Martins, José V. Martins, Sandra Andrade, Henrique Cabral, João P. Vieira

{"title":"Variation in otolith microchemistry for Lebranche mullet (Mugil liza) in southern Brazil and its potential use in identifying their nursery grounds","authors":"V. Lemos, Ana C. G. Mai, Ana C. Martins, José V. Martins, Sandra Andrade, Henrique Cabral, João P. Vieira","doi":"10.7755/fb.122.1-2.2","DOIUrl":"https://doi.org/10.7755/fb.122.1-2.2","url":null,"abstract":"— The Lebranche mullet ( Mugil liza ) is an economically important estuarine species found along the coast of Brazil. The southern population of this species ranges from the coast of the state of São Paulo (23°S) to the coast of Argentina (36°S). It migrates annually among estuaries in Argentina, Uruguay, and southern Brazil to reproduce in their marine spawning grounds (~26°S). We evaluated whether variations in the otolith chemical composition for fish acquired at nursery grounds can be used to make distinctions among 4 nursery areas of the southern population. Analysis of otolith microchemistry included concentrations of 9 elements: lithium (Li), magnesium (Mg), copper, zinc, strontium (Sr), cadmium, barium, lanthanum, and lead. When using random forest classification algorithms, the maximum accuracy of 96% in assignment of nursery habitat for Lebranche mullet between 2 groups (fish caught at nurseries in Brazil and fish migrating from waters of Uruguay and Argentina) was achieved with the combination of Li, Mg, and Sr. Our results indicate that the elemental composition of otoliths can be an important tool for establishing connectivity between nursery areas used by Lebranche mullet. We discuss the implications of this result for the structure of the population and the management of the mullet fishery in southern Brazil relative to the limitations of the meth-ods we employed.","PeriodicalId":507250,"journal":{"name":"Fishery Bulletin","volume":"24 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140226181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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High survivorship of sandbar sharks (Carcharhinus plumbeus) following catch and release in a growing land-based fishery in Massachusetts 在马萨诸塞州不断发展的陆基渔业中，沙鲨（Carcharhinus plumbeus）在捕获和释放后的高存活率

Fishery Bulletin Pub Date : 2024-03-05 DOI: 10.7755/fb.122.1-2.1

Jeff Kneebone, Connor F. White, Caroline Collatos, N. Whitney

{"title":"High survivorship of sandbar sharks (Carcharhinus plumbeus) following catch and release in a growing land-based fishery in Massachusetts","authors":"Jeff Kneebone, Connor F. White, Caroline Collatos, N. Whitney","doi":"10.7755/fb.122.1-2.1","DOIUrl":"https://doi.org/10.7755/fb.122.1-2.1","url":null,"abstract":"— Directed land-based recreational catch- and-release fishing for sandbar sharks ( Carcharhinus plumbeus ) is growing in popularity in Massachusetts. Working with 21 volunteer fishermen of varying experience levels, we observed and documented the fishing gear, tackle, and techniques used to catch and release 67 sand-bar sharks. The postrelease fate of each shark was monitored by using an acceleration data logger (ADL) tag embedded in a custom float package that was secured to the first dorsal fin with a galvanic timed release. All 67 packages were recovered after detachment following monitoring periods of 0.15–9.98 d. Examination of the depth, tailbeat period (TBP), pitch, and roll time series from 65 ADLs that recorded data revealed high survivorship for tagged sharks, with all of them alive at the time of tag detachment. Behavioral recovery was estimated to have occurred at an average of 6.36 h after release on the basis of trends in TBP for 54 sandbar sharks with at least 10 h of postrelease acceleration data. These results indicate that sandbar sharks are remarkably resilient to catch and release in the land-based shark fishery in","PeriodicalId":507250,"journal":{"name":"Fishery Bulletin","volume":"22 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140264810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0