Fisheries Oceanography最新文献_第9页

Insights into the spatio-temporal variability of spawning in a territorial coastal fish by combining observations, modelling and literature review 结合观测、建模和文献综述，深入了解领土沿海鱼类产卵的时空变化

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-09-20 DOI: 10.1111/fog.12609

Marine Di Stefano, Térence Legrand, Antonio Di Franco, David Nerini, Vincent Rossi

{"title":"Insights into the spatio-temporal variability of spawning in a territorial coastal fish by combining observations, modelling and literature review","authors":"Marine Di Stefano, Térence Legrand, Antonio Di Franco, David Nerini, Vincent Rossi","doi":"10.1111/fog.12609","DOIUrl":"10.1111/fog.12609","url":null,"abstract":"In bipartite life cycle fishes, spawning represents the onset of propagules dispersal, with eggs and larvae experiencing anisotropic transport and high mortality rates, before eventually metamorphosing and settling. Hence, early-life stages operate as bottlenecks for population demography by strongly constraining recruitment. Despite its significance, spawning is rarely explicitly considered in ecosystem management due to a lack of knowledge, for many species, about where and when spawning occurs. Previous evidences suggest that temperature is among the main drivers of spawning in Teleosts. Using the ecologically and economically relevant white seabream Diplodus sargus in the central Mediterranean Sea as a case study, we assess the abiotic factors that regulate the onset and duration of spawning and subsequent dispersal. Lagrangian backtracking simulations fed with early-life observations allow locating 11 spawning events, which are then associated to simulated temperatures ranging from 14.8° C to 20.6° C, in close agreement with previous estimates. Based on this range of suitable temperatures, we model the spatio-temporal variability of spawning success at broad-scale over 10 years (2005–2014) following the backtracking approach with hypothetical constant settlement areas. It highlights a prominent inter-annual variability in the Adriatic and Siculo-Tunisian strait driven by oceanographic processes. Moreover, a powerful clustering method uncovers relatively stable spawning areas in the Ligurian and Tyrrhenian seas with both early (January to Mid-February) and late (April to June) spawning peaks. Our methodology can be applied to other species and oceanic systems to investigate how oceanic processes impact spawning success, enabling the design of sound management strategies.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"32 1","pages":"70-90"},"PeriodicalIF":2.6,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fog.12609","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42700492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mesoscale oceanographic features drive divergent patterns in connectivity for co-occurring estuarine portunid crabs 中尺度海洋学特征驱动了共同发生的河口机会蟹连通性的不同模式

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-09-07 DOI: 10.1111/fog.12608

Daniel E. Hewitt, Hayden T. Schilling, Roshan Hanamseth, Jason D. Everett, Junde Li, Moninya Roughan, Daniel D. Johnson, Iain M. Suthers, Matthew D. Taylor

{"title":"Mesoscale oceanographic features drive divergent patterns in connectivity for co-occurring estuarine portunid crabs","authors":"Daniel E. Hewitt, Hayden T. Schilling, Roshan Hanamseth, Jason D. Everett, Junde Li, Moninya Roughan, Daniel D. Johnson, Iain M. Suthers, Matthew D. Taylor","doi":"10.1111/fog.12608","DOIUrl":"10.1111/fog.12608","url":null,"abstract":"Larval dispersal and connectivity have important implications for fisheries management, especially for species with life cycles influenced by ocean boundary currents. Giant Mud Crab (Scylla serrata) and Blue Swimmer Crab (Portunus armatus) are two estuarine portunid crabs (Family: Portunidae) that support significant commercial and recreational harvest in eastern Australia. Giant Mud Crab migrate to coastal waters to spawn, and while Blue Swimmer Crab spawn primarily within estuaries they occasionally migrate to coastal waters to spawn, followed by larval dispersal in the East Australian Current (EAC). Here, we coupled a high-resolution oceanographic model with a Lagrangian particle tracking framework to simulate larval dispersal and determine the extent of population connectivity in this region. Our simulations indicate broad-scale connectivity (~40–400 km), characterised by high inter-estuary connectivity. Overall, our results suggest a north-to-south source-sink structure for both species, with contributions of particles from the north ranging from 51% to 99%. Recruitment to a given estuary is dependent on the proximity of mesoscale oceanographic features of the EAC. Most notably, the EAC separation acts as a barrier to recruitment between spawning and settlement to the north/south of this region. This significantly limits interjurisdictional connectivity for these species, especially Blue Swimmer Crab, likely due to a shorter pelagic larval duration than Giant Mud Crab. Our results provide evidence to inform the assessment and management of these species.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"31 6","pages":"587-600"},"PeriodicalIF":2.6,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fog.12608","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45453260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Source–sink recruitment of red snapper: Connectivity between the Gulf of Mexico and Atlantic Ocean 红鲷鱼的来源-汇点补充：墨西哥湾和大西洋之间的连通性

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-08-24 DOI: 10.1111/fog.12607

Mandy Karnauskas, Kyle W. Shertzer, Claire B. Paris, Nicholas A. Farmer, Theodore S. Switzer, Susan K. Lowerre-Barbieri, G. Todd Kellison, Ruoying He, Ana C. Vaz

{"title":"Source–sink recruitment of red snapper: Connectivity between the Gulf of Mexico and Atlantic Ocean","authors":"Mandy Karnauskas, Kyle W. Shertzer, Claire B. Paris, Nicholas A. Farmer, Theodore S. Switzer, Susan K. Lowerre-Barbieri, G. Todd Kellison, Ruoying He, Ana C. Vaz","doi":"10.1111/fog.12607","DOIUrl":"10.1111/fog.12607","url":null,"abstract":"Geopolitical fishery management boundaries are often misaligned with the ecological population structure of marine species, which presents challenges for assessment and management of these species. Red snapper, Lutjanus campechanus, is an iconic and heavily exploited species in both the US Gulf of Mexico and off the southeastern US Atlantic coast and is managed separately in the two jurisdictions. It is hypothesized that the Atlantic red snapper stock is sustained partially by larval subsidies from the Gulf of Mexico. Here we use a biophysical modeling approach to simulate recruitment of red snapper across the entire Southeastern US region, and quantify rates of larval exchange across management jurisdictions. The biophysical framework simulates realistic red snapper behaviors and traits with respect to spatial distribution and timing of spawning, larval vertical migration and pelagic larval duration, and settlement habitat. Our results suggest that areas of the West Florida Shelf south of Tampa Bay are important sources of larvae for the Atlantic population, supplying as much as one third of the recruitment during some years. Yet, contributions of Gulf-spawned red snapper to the Atlantic stock are highly dynamic given large variability in spatial and temporal patterns of red snapper recovery in each region. As such, effective management of the Gulf of Mexico red snapper stock, particularly the spawning population in southwest Florida, may have important consequences for the sustainable harvest of red snapper off the Atlantic coast.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"31 6","pages":"571-586"},"PeriodicalIF":2.6,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43227192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Long-term variability in spawning stock age structure influences climate–recruitment link for Barents Sea cod 产卵种群年龄结构的长期变化影响巴伦支海鳕鱼的气候招募联系

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-08-15 DOI: 10.1111/fog.12605

Geir Ottersen, Rebecca E. Holt

{"title":"Long-term variability in spawning stock age structure influences climate–recruitment link for Barents Sea cod","authors":"Geir Ottersen, Rebecca E. Holt","doi":"10.1111/fog.12605","DOIUrl":"10.1111/fog.12605","url":null,"abstract":"Fish populations may spawn a vast number of offspring, while only a small and highly variable fraction of a new cohort survives long enough to enter into the fisheries as recruits. It is intuitive that the size and state of the spawning stock, the adult part of the fish population, is important for recruitment. Additionally, environmental conditions can greatly influence survival through vulnerable early life stages until recruitment. To understand what regulates recruitment, an essential part of fish population dynamics, it is thus necessary to explain the impact of fluctuations in both spawning stock and environment, including interactions. Here, we examine if the connection between the environment and recruitment is affected by the state of the spawning stock, including biomass, mean age and age diversity. Specifically, we re-evaluate the hypothesis stating that recruitment from a spawning stock dominated by young fish and few age classes is more vulnerable to environmental fluctuations. We expand upon earlier work on the Barents Sea stock of Atlantic cod, now with data series extended in time both backwards and forwards to cover the period 1922–2019. While our findings are correlative and cannot prove a specific cause and effect mechanism, they support earlier work and strengthen the evidence for the hypothesis above. Furthermore, this study supports that advice to fisheries management should include considerations of environmental status.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"32 1","pages":"91-105"},"PeriodicalIF":2.6,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/89/e5/FOG-32-91.PMC10087206.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9316350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Impact of the use of different temperature-dependent larval development functions on estimates of potential large-scale connectivity of American lobster 不同温度依赖性幼虫发育函数对美国龙虾潜在大规模连通性估计的影响

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-08-04 DOI: 10.1111/fog.12606

Brady K. Quinn, Joël Chassé, Rémy Rochette

{"title":"Impact of the use of different temperature-dependent larval development functions on estimates of potential large-scale connectivity of American lobster","authors":"Brady K. Quinn, Joël Chassé, Rémy Rochette","doi":"10.1111/fog.12606","DOIUrl":"10.1111/fog.12606","url":null,"abstract":"The way in which the effect of temperature on the development rate of crustacean larvae is simulated in larval dispersal models potentially impacts the inferences made about population recruitment and connectivity. In this study, we contrasted dispersal and connectivity predictions made by a large-scale dispersal model of American lobster (Homarus americanus H. Milne Edwards, 1837) larvae using three temperature-dependent larval development functions proposed in the literature: (1) “warm-source lab”, (2) “warm-source field”, and (3) “cold-source lab”. Differences in predictions using each function were contrasted in the northern (colder) and southern (warmer) portions of the species' range. Using these different development functions resulted in significant and marked differences (61.3–162.4 km in the north and 30.9–81.9 km in the south) in the distances dispersed by larvae from hatch to settlement. In general, predicted self-seeding, retention, and local connectivity were increased, and predicted connectivity among distant locations was decreased, when a function predicting faster development was used. The field-derived function predicted much less connectivity and decreased dispersal overall than both lab-derived functions. The cold-source lab function predicted more retention in northern regions, but less in southern regions, than the warm-source lab function. Our findings indicate the need for more studies to quantify the rate at which lobster larvae develop in nature, including how this may vary over space and time.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"31 5","pages":"554-569"},"PeriodicalIF":2.6,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44894108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Shifts in the seasonal trophic ecology of larvae and juveniles of European hake (Merluccius merluccius): From the Galician upwelling system (NW Spain) 欧洲鳕鱼（Merluccius Merluccius）幼虫和幼鱼季节性营养生态的变化：来自加利西亚上升流系统（西班牙西北部）

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-07-18 DOI: 10.1111/fog.12603

Raúl Laiz-Carrión, Águeda Cabrero, José María Quintanilla, Alma Hernández, Amaya Uriarte, Jesús Gago, José María Rodríguez, Carmen Piñeiro, Alberto García, Fran Saborido-Rey

{"title":"Shifts in the seasonal trophic ecology of larvae and juveniles of European hake (Merluccius merluccius): From the Galician upwelling system (NW Spain)","authors":"Raúl Laiz-Carrión, Águeda Cabrero, José María Quintanilla, Alma Hernández, Amaya Uriarte, Jesús Gago, José María Rodríguez, Carmen Piñeiro, Alberto García, Fran Saborido-Rey","doi":"10.1111/fog.12603","DOIUrl":"10.1111/fog.12603","url":null,"abstract":"The trophic ecology of European hake (Merluccius merluccius) larvae and early-juveniles from the Iberian shelf off Galicia (NW Spain) are assessed by means of stable isotopes (SIA) and nutritional condition in conjunction with hydrobiological variations observed during the winter and summer season of 2012. Hake early-juveniles (18–47 mm SL) showed higher δ15N than larvae (3–11 mm SL) together with the microzooplankton (55–200 μm) and mesozooplankton (>200 μm) during both seasons. Low δ15N values and high variability in both zooplankton and hake larvae were found during winter coinciding with an unusually strong upwelling event. Inversely, high δ15N content in zooplankton in summer suggests strong nitrogen reutilization. However, hake larvae sampled in summer had a higher RNA:DNA ratio in line with higher Fulton condition factors than those sampled in winter. Higher δ13C values for microzooplankton and mesozooplankton and hake larvae in summer compared to late winter point to prey availability differences. The relationship between nitrogen and carbon stable isotopes versus size or weight suggests an ontogenetic shift in the diet of hake larvae. Early-juveniles had a lower isotopic niche width compared to larvae in both late winter and summer, indicating a trophic specialization related to changes following settlement process from planktonic life to demersal habitat. Higher trophic specialization was observed in summer, which recorded a narrower isotopic niche and higher trophic position estimations.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"31 5","pages":"539-553"},"PeriodicalIF":2.6,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fog.12603","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48104403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Combined effects of temperature and fishing mortality on the Barents Sea ecosystem stability 温度和捕捞死亡率对巴伦支海生态系统稳定性的综合影响

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-07-16 DOI: 10.1111/fog.12604

Elliot Sivel, Benjamin Planque, Ulf Lindstrøm, Nigel G. Yoccoz

{"title":"Combined effects of temperature and fishing mortality on the Barents Sea ecosystem stability","authors":"Elliot Sivel, Benjamin Planque, Ulf Lindstrøm, Nigel G. Yoccoz","doi":"10.1111/fog.12604","DOIUrl":"10.1111/fog.12604","url":null,"abstract":"Temporal variability in abundance and composition of species in marine ecosystems results from a combination of internal processes, external drivers, and stochasticity. One way to explore the temporal variability in an ecosystem is through temporal stability, measured using the inverse of the coefficient of variation for biomass of single species. The effect of temperature and fisheries on the variability of the Barents Sea food web is still poorly understood. To address this question, we simulate the possible dynamics of Barents Sea food web under different temperature and fishery scenarios using a simple food-web model (Non-Deterministic Network Dynamic [NDND]). The NDND model, which is based on chance and necessity (CaN), defines the state space of the ecosystem using its structural constraints (necessity) and explores it stochastically (chance). The effects of temperature and fisheries on stability are explored both separately and combined. The simulation results suggest that increasing temperature has a negative effect on species biomass and increasing fisheries triggers compensatory dynamics of fish species. There is a major intra-scenario variability in temporal stability, while individual scenarios of temperature and fisheries display a weak negative impact and no effect on stability, respectively. However, combined scenarios indicate that fisheries amplify the effects of temperature on stability, while increasing temperature leads to a shift from synergistic to antagonistic effects between these two drivers.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"32 1","pages":"106-120"},"PeriodicalIF":2.6,"publicationDate":"2022-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fog.12604","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48567042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Spatial and biomass structure of shallow-water cape hake (Merluccius capensis) in the light of episodic environmental shifts 偶发性环境变化下浅水角鳕的空间和生物量结构

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-06-28 DOI: 10.1111/fog.12602

Nixon Bahamon, Johannes N. Kathena, Anja K. van der Plas, Paulus Kainge, Jorge Paramo, Ana Gordoa

{"title":"Spatial and biomass structure of shallow-water cape hake (Merluccius capensis) in the light of episodic environmental shifts","authors":"Nixon Bahamon, Johannes N. Kathena, Anja K. van der Plas, Paulus Kainge, Jorge Paramo, Ana Gordoa","doi":"10.1111/fog.12602","DOIUrl":"10.1111/fog.12602","url":null,"abstract":"The spatial distribution patterns of Merluccius capensis in the Namibian waters were investigated and related to average environmental conditions during 1996–2020. Fisheries-independent data and simultaneously collected water temperature and dissolved oxygen data were used from austral summer surveys. A geostatistical kriging approach was employed to evaluate the spatial structure of hakes. Links to environmental conditions were explored via data-driven generalized additive models (GAMs). M. capensis generally exhibited average patch sizes between 40 and 50 nm at depths between 180 and 280 m. During the extreme episodic water warming in 2011 related to a Benguela-Niño, the hake patches shrank up to a historical minimum of about 13 nm and moved offshore showing maximum densities at unusual deeper bottoms between 260 and 320 m. The deepening and size reduction of aggregations did not alter the biomass estimates (570 kt) that remained within historical ranges (249–811 kt). Although other extremely warm and cold summers were reported during the study period, no significant impact on the M. capensis patch size was detected. Maximum M. capensis densities were linked to optimal bottom temperature range between 10.1 and 11.8°C, dissolved oxygen values close to zero nearshore, and between 0.8 and 1.4 ml/L offshore. Potential changes of biomass produced by extreme environmental events remained undetected within the interannual biomass ranges, suggesting a high resilience capacity to episodic extreme environmental events.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"31 5","pages":"524-538"},"PeriodicalIF":2.6,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fog.12602","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47424595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics of anchoveta (Engraulis ringens) schools in the optimum zone and the physiological stress zone of its distribution between 2011 and 2021 2011-2021年凤尾鱼（Engraulis ringens）种群分布的最佳区和生理应激区特征

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-06-27 DOI: 10.1111/fog.12601

Pedro Ramiro Castillo, Cecilia Peña, Daniel Grados, Luis La Cruz, Carlos Valdez, Marissela Pozada-Herrera, Rodolfo Cornejo

{"title":"Characteristics of anchoveta (Engraulis ringens) schools in the optimum zone and the physiological stress zone of its distribution between 2011 and 2021","authors":"Pedro Ramiro Castillo, Cecilia Peña, Daniel Grados, Luis La Cruz, Carlos Valdez, Marissela Pozada-Herrera, Rodolfo Cornejo","doi":"10.1111/fog.12601","DOIUrl":"10.1111/fog.12601","url":null,"abstract":"This study has considered anchoveta acoustic data from the Pelagic Resources Hydroacoustic Assessment Surveys carried out by the Peruvian Sea Institute (IMARPE) and free access satellite data (HYCOM and MODIS from the USA) of some oceanographic variables between the period 2011 and 2021, to know the oceanographic conditions, characteristics of schools and size structure in the optimum zone (OZ) and in the physiological stress zone (PSZ), of their total distribution. The OZ is determined by the extent of the Cold Coastal Waters (CCW), and the PSZ is determined by the mixing of waters, to the north by the CCW-ESW (Equatorial Surface Waters) and to the west between the CCW-SSW (Subtropical Surface Waters). The range of sea surface temperature and salinity in the PSZ (16.1–25.0°C and 34.65–35.29, respectively) was wider than in the OZ (14.5–24.0°C and 34.65–35.20, respectively), where a higher number of schools were recorded. Our analyses showed that the morphometric and energetic acoustic descriptors of anchoveta schools in the summer were higher during summers compared to springs. In terms of positional characteristics, the mean depth of the schools in the PSZ was slightly greater than in the OZ. The total size structure of anchoveta in the OZ consisted mainly of juvenile specimens (less than 12 cm total length) in the summer of 2011 and 2013–2014 and in the spring between 2014–2017 and 2021. In the PSZ, adult specimens (greater than 12 cm total length) predominated in summer between 2011–2013, 2015, 2018, and 2021 and in spring between 2011–2013, 2015, and between 2018–2021. However, specimens greater than 10 cm in total length were found in the PSZ. Knowledge of the location of this zone away from the coast will allow a high probability of anchoveta capture of adult specimens during fishing periods.","PeriodicalId":51054,"journal":{"name":"Fisheries Oceanography","volume":"31 5","pages":"510-523"},"PeriodicalIF":2.6,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47793111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Strategic importance of the Bergen-Shetland Corridor to marine biology and oceanography of the Atlantic Ocean 卑尔根-设得兰走廊对大西洋海洋生物学和海洋学的战略重要性

IF 2.6 2区农林科学

Fisheries Oceanography Pub Date : 2022-06-18 DOI: 10.1111/fog.12600

Robert J. Lennox, Claudia Junge, Jan Reubens, Abdirahman Omar, Ingunn Skjelvan, Knut Wiik Vollset

引用次数: 0