— A recent Atlantic- wide tag- recapture experiment run by the International Commission for the Conservation of Atlantic Tunas was an opportunity to directly validate otolith increment deposition rates for bigeye tuna ( Thunnus obesus ) and yellowfin tuna ( T. albacares ) in the region. Age and time at liberty were estimated by using annual and daily increment counts for sectioned otoliths from sampled fish previously injected with oxy- tetracycline and later recaptured. The use of annual increment counts resulted in g reater age estimates than those from daily increment counts for fish >55 cm straight fork length (SFL). Use of daily increment counts led to underestima- tion of time at liberty for fish >55 cm SFL at recovery, compared with known times at liberty. In contrast, predictions based on annual increment counts are accurate across the entire size range of sampled fish, validating the notion that increments are deposited annually. We therefore recommend that counting annual increments be the preferred method for aging yellowfin and bigeye tuna from the Atlantic Ocean and that the use of daily increments for aging be limited to young of the year. Aging fish accurately is important for stock assess- ments in which data on age and growth play an increasingly essential role in examining population dynamics. It is crucial that otolith reading practices and analyses based on age data reflect the most up- to- date recommendations for age estimation.
{"title":"Evaluating otolith increment deposition rates in bigeye tuna (Thunnus obesus) and yellowfin tuna (T. albacares) tagged in the Atlantic Ocean: Suppl. Fig. 2","authors":"K. Krusic-Golub, L. Ailloud","doi":"10.7755/fb.121.1.s2","DOIUrl":"https://doi.org/10.7755/fb.121.1.s2","url":null,"abstract":"— A recent Atlantic- wide tag- recapture experiment run by the International Commission for the Conservation of Atlantic Tunas was an opportunity to directly validate otolith increment deposition rates for bigeye tuna ( Thunnus obesus ) and yellowfin tuna ( T. albacares ) in the region. Age and time at liberty were estimated by using annual and daily increment counts for sectioned otoliths from sampled fish previously injected with oxy- tetracycline and later recaptured. The use of annual increment counts resulted in g reater age estimates than those from daily increment counts for fish >55 cm straight fork length (SFL). Use of daily increment counts led to underestima- tion of time at liberty for fish >55 cm SFL at recovery, compared with known times at liberty. In contrast, predictions based on annual increment counts are accurate across the entire size range of sampled fish, validating the notion that increments are deposited annually. We therefore recommend that counting annual increments be the preferred method for aging yellowfin and bigeye tuna from the Atlantic Ocean and that the use of daily increments for aging be limited to young of the year. Aging fish accurately is important for stock assess- ments in which data on age and growth play an increasingly essential role in examining population dynamics. It is crucial that otolith reading practices and analyses based on age data reflect the most up- to- date recommendations for age estimation.","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44357269","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}
T. Phan, Albert. V. Manuel, N. Tsutsui, T. Yoshimatsu
— Heavy rain can decrease salinity and increase turbidity of the water in coastal areas, negatively affecting the development of organisms, par- ticularly during their early life stages. In this study, the effects of salinity and turbidity on embryos of the bamboo sole ( Heteromycteris japonicus ) were evalu- ated to improve understanding of its tolerance to global climate change. Three experiments were carried out over a 7- d period. In the first experiment, embryos of bamboo sole were exposed for 3 h to 1 of 6 salinity levels (14–34). Low salinity levels (14 and 18) resulted in signifi- cantly shorter total lengths of newly hatched larvae in comparison with larval sizes in treatments with higher salinities, but no significant differences were observed in hatching rate and larval survival rate among treatments. In the second experiment, embryos were exposed to turbidities of 0, 100, 300, 500, and 700 nephelometric turbidity units for 3 h. Turbidity significantly decreased hatching rate, survival rate, and total length and increased onset hatching time and percentage of abnormality. In the third experiment, embryos were exposed to different combinations of salinity and turbidity. The interaction effect of salinity and turbidity on total length of newly hatched larvae was significant. These findings indicate that embryo development of bamboo sole was more affected by
{"title":"Effects of salinity and turbidity on development of bamboo sole (Heteromycteris japonicus)","authors":"T. Phan, Albert. V. Manuel, N. Tsutsui, T. Yoshimatsu","doi":"10.7755/fb.120.3-4.7","DOIUrl":"https://doi.org/10.7755/fb.120.3-4.7","url":null,"abstract":"— Heavy rain can decrease salinity and increase turbidity of the water in coastal areas, negatively affecting the development of organisms, par- ticularly during their early life stages. In this study, the effects of salinity and turbidity on embryos of the bamboo sole ( Heteromycteris japonicus ) were evalu- ated to improve understanding of its tolerance to global climate change. Three experiments were carried out over a 7- d period. In the first experiment, embryos of bamboo sole were exposed for 3 h to 1 of 6 salinity levels (14–34). Low salinity levels (14 and 18) resulted in signifi- cantly shorter total lengths of newly hatched larvae in comparison with larval sizes in treatments with higher salinities, but no significant differences were observed in hatching rate and larval survival rate among treatments. In the second experiment, embryos were exposed to turbidities of 0, 100, 300, 500, and 700 nephelometric turbidity units for 3 h. Turbidity significantly decreased hatching rate, survival rate, and total length and increased onset hatching time and percentage of abnormality. In the third experiment, embryos were exposed to different combinations of salinity and turbidity. The interaction effect of salinity and turbidity on total length of newly hatched larvae was significant. These findings indicate that embryo development of bamboo sole was more affected by","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48591650","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":"Effects of incomplete sampling and standardization on indices of abundance from a fishery-independent trawl survey off the Atlantic coast of the southeastern United States: Suppl. Fig. 3","authors":"Amy Zimney, T. Smart","doi":"10.7755/fb.120.3-4.6s4","DOIUrl":"https://doi.org/10.7755/fb.120.3-4.6s4","url":null,"abstract":"","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45503591","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}
Cameron T. Hodgdon, N. S. Khalsa, M. Mazur, Y. Chen
{"title":"Climate-driven changes in growth and size at maturity of Gulf of Maine lobster stocks: implications for stock assessment models","authors":"Cameron T. Hodgdon, N. S. Khalsa, M. Mazur, Y. Chen","doi":"10.7755/fb.120.3-4.5","DOIUrl":"https://doi.org/10.7755/fb.120.3-4.5","url":null,"abstract":"","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47372780","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":"Life history differences between 2 anadromous populations of the northern form of the Dolly Varden (Salvelinus malma malma) in Bristol Bay in southwestern Alaska","authors":"A. Chin, M. Bond, T. Quinn","doi":"10.7755/fb.120.3-4.4","DOIUrl":"https://doi.org/10.7755/fb.120.3-4.4","url":null,"abstract":"","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46766972","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":"Evaluation of factors contributing to postrelease mortality of greater amberjack (Seriola dumerili) in the northern Gulf of Mexico with depth and acceleration data from acoustic tags","authors":"K. Boyle, C. Hightower, S. Powers","doi":"10.7755/fb.120.3-4.3","DOIUrl":"https://doi.org/10.7755/fb.120.3-4.3","url":null,"abstract":"","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49179558","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":"Bayesian estimation of the age and growth of the round stingray (Urobatis halleri) in the Gulf of California in Mexico: supplementary table","authors":"J. Márquez-Farías","doi":"10.7755/fb.120.3-4.2s","DOIUrl":"https://doi.org/10.7755/fb.120.3-4.2s","url":null,"abstract":"","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44776709","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}
Marcus A. Zokan, David M. Wyanski, D. White, G. Sedberry
{"title":"Life history of the spotted moray (Gymnothorax moringa) off the Atlantic coast of the southeastern United States: age, growth, and reproduction","authors":"Marcus A. Zokan, David M. Wyanski, D. White, G. Sedberry","doi":"10.7755/fb.120.3-4.1","DOIUrl":"https://doi.org/10.7755/fb.120.3-4.1","url":null,"abstract":"","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47649664","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}
— Gray triggerfish ( Balistes capriscus ) is a common resident of reef habitats in the northern Gulf of Mexico. It is targeted by fishermen and recently considered not overfished. However, stock status is highly depen- dent on indirect mortality estimates from sport and commercial fishery landings that may have errors. To enhance management efforts, we used acoustic telemetry to directly estimate fishing mortality ( F ), natural mortality ( M ), and total mortality ( Z ) for gray triggerfish on artificial reefs in the northern Gulf of Mexico. Over the study period, 30 fish emigrated, 4 fish were caught by fishermen, 4 fish died of natural causes, 8 fish were active when their transmitter battery expired, and 3 fish were still active at the end of the study. Annual F was 0.23 (95% confi- dence interval [CI]: 0.07–0.50) and was lower than in past stock assessments. This rate indicates that earlier man- agement efforts were successful. However, our F estimate is possibly greater than a recent management goal of 0.17 based on a 30% spawning potential ratio. Therefore, gray triggerfish stocks may still be experiencing overfishing. Annual M was 0.25 (95% CI: 0.07–0.57) and supports the management applied M of 0.28. Annual Z was 0.48 (95% CI: 0.18–0.85), which was not considered sustainable under the most recent stock assessment and supports the management decision to increase fishery restrictions.
{"title":"Mortality estimates for gray triggerfish (Balistes capriscus) in the northern Gulf of Mexico based on acoustic telemetry","authors":"Megan K. McKinzie, S. Szedlmayer","doi":"10.7755/fb.120.2.7","DOIUrl":"https://doi.org/10.7755/fb.120.2.7","url":null,"abstract":"— Gray triggerfish ( Balistes capriscus ) is a common resident of reef habitats in the northern Gulf of Mexico. It is targeted by fishermen and recently considered not overfished. However, stock status is highly depen- dent on indirect mortality estimates from sport and commercial fishery landings that may have errors. To enhance management efforts, we used acoustic telemetry to directly estimate fishing mortality ( F ), natural mortality ( M ), and total mortality ( Z ) for gray triggerfish on artificial reefs in the northern Gulf of Mexico. Over the study period, 30 fish emigrated, 4 fish were caught by fishermen, 4 fish died of natural causes, 8 fish were active when their transmitter battery expired, and 3 fish were still active at the end of the study. Annual F was 0.23 (95% confi- dence interval [CI]: 0.07–0.50) and was lower than in past stock assessments. This rate indicates that earlier man- agement efforts were successful. However, our F estimate is possibly greater than a recent management goal of 0.17 based on a 30% spawning potential ratio. Therefore, gray triggerfish stocks may still be experiencing overfishing. Annual M was 0.25 (95% CI: 0.07–0.57) and supports the management applied M of 0.28. Annual Z was 0.48 (95% CI: 0.18–0.85), which was not considered sustainable under the most recent stock assessment and supports the management decision to increase fishery restrictions.","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46834818","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":"Consumption of Pacific salmon (Oncorhynchus spp.) by California sea lions (Zalophus californianus) and Steller sea lions (Eumetopias jubatus) in northwest Washington during 2010–2013: supplementary table 1","authors":"J. Scordino","doi":"10.7755/fb.120.2.5s1","DOIUrl":"https://doi.org/10.7755/fb.120.2.5s1","url":null,"abstract":"","PeriodicalId":50442,"journal":{"name":"Fishery Bulletin","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42051710","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}
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