Review
Oceanography
Miguel Angel Ojeda-Ruiz, David Petatan- Ramirez, Triana Guerrero-Izquierdo, Christian Salvadeo
Summary: This study applied the Rapid Vulnerability Assessment (RVA) to the sardine fishery in northwestern Mexico and found that RVA is a useful and flexible method for assessing vulnerability to climate change and can serve as a strategic planning tool. The study also found that RVA promotes co-management practices and identified the sardine fishery in the Gulf of California as the most vulnerable to climate change.
PROGRESS IN OCEANOGRAPHY
(2022)
Review
Oceanography
Edgardo B. Farach-Espinoza, Juana Lopez-Martinez, Ricardo Garcia-Morales, Manuel O. Nevarez-Martinez, Sofia Ortega-Garcia, Daniel B. Lluch-Cota
Summary: The abundance of adult fish depends on the survival of early life stages, which are influenced by mesoscale events in the marine environment. This study investigated the relationship between different mesoscale processes and the catches of Pacific sardine in the Gulf of California. The results showed that eddies and coastal upwelling had significant effects on the catches, while the persistence of Tropical surface sea water intrusion also played a role. The findings highlight the importance of considering these processes in climate change scenarios to understand their impact on trophic dynamics in the Gulf of California.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Yuxiao Gou, Tomihiko Higuchi, Yuki Iino, Tsuyoshi Nagasaka, Yuichi Shimizu, Kotaro Shirai, Takashi Kitagawa
Summary: This study determined the oxygen isotope fractionation equation for chum salmon and found that both oxygen and carbon isotopes deplete simultaneously in lower temperature settings.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Concepcion Enciso-Enciso, Manuel Otilio Nevarez-Martinez, Rebeca Sanchez-Cardenas, Emigdio Marin-Enriquez, Luis A. Salcido-Guevara, Carolina Minte-Vera
Summary: The study analyzed the individual growth and body mass allometry of the temperate stock of Sardinops sagax from 2005 to 2014 in the southern California Current System, as well as the interrelationship with environmental factors.
Article
Fisheries
Yongchuang Shi, Bo Kang, Wei Fan, Lingling Xu, Shengmao Zhang, Xuesen Cui, Yang Dai
Summary: In this study, both single-algorithm and ensemble distribution models were established to predict the habitat distribution of Pacific sardine using environmental variables in the Northwest Pacific Ocean. The results showed that sea surface height and temperature were the key factors influencing the habitat distribution. The suitable habitat area for Pacific sardine varied monthly, with a counterclockwise pattern in the geometric centers of habitat suitability index.
Article
Environmental Sciences
Manuel O. Nevarez-Martinez, Enrique Morales-Bojorquez, Maria de los Angeles Martinez-Zavala, Hector Villalobos, Marlene A. Luquin-Covarrubias, Violeta E. Gonzalez-Maynez, Juana Lopez-Martinez, J. Pablo Santos-Molina, Arelly Ornelas-Vargas, Francisco Delgado-Vences
Summary: Knowledge of the population dynamics and changes in abundance of Pacific sardine fishery is important for fishery management. This study used an integrated catch-at-age model to analyze 47 fishing seasons of Sardinops sagax in the Gulf of California. The model showed the importance of recruits in the fishery and highlighted the changes in abundance using spawning and acoustic indices. The Pacific sardine fishery in the Gulf of California has been fully exploited with a stable level of harvest.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Ecology
Concepcion Enciso-Enciso, Manuel O. Nevarez-Martinez, Rebeca Sanchez-Cardenas, Luis A. Salcido-Guevara, Carolina Minte-Vera, Emigdio Marin-Enriquez, Martin E. Hernandez-Rivas
Summary: Understanding the population dynamics and abundance variations of the Pacific sardine is crucial for effective fishing management. Through statistical analysis, it was found that there are different stocks of Sardinops sagax in the southern California Current System. The total biomass and spawning biomass of the sardine showed significant interannual variability, but overall, fishing was found to be sustainable during the analyzed period, except for the 2014 and 2017 fishing seasons. The use of an integrated analysis model (ACE) can estimate the biologically acceptable catch and a biomass-based harvest control rule is considered a suitable management strategy.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Review
Geosciences, Multidisciplinary
Victoria Ndinelago Erasmus, Bronwen Currie, Jean-Paul Roux, Simon Harvey Elwen, Moses Shidalwomunhu Kalola, Beau Tjizoo, Johannes Nduvudi Kathena, Johannes Angala Iitembu
Summary: The study reviewed the diet of predators before and after the collapse of the sardine population in the northern Benguela Upwelling System. It found that multiple predators relied on sardine as a high-quality food source. While the diets of commercially exploited species were well-documented, there was a lack of data for non-commercially exploited species.
JOURNAL OF MARINE SYSTEMS
(2021)
Article
Oceanography
Liu Chunlin, Zhang Chi, Tian Yongjun, Wang Liangming, Lin Longshan, Li Yuan, Yoshiro Watanabe
Summary: This study analyzed the hatch dates and otolith growth rates of juvenile Japanese sardine to understand the recent recovery of the stock. The findings revealed faster growth rates in a crucial growth period compared to previous years, and identified two migration groups with different hatch dates. The study provides valuable information on the recruitment processes during the stock recovery period.
JOURNAL OF OCEAN UNIVERSITY OF CHINA
(2022)
Article
Multidisciplinary Sciences
Tatsuya Sakamoto, Motomitsu Takahashi, Ming-Tsung Chung, Ryan R. Rykaczewski, Kosei Komatsu, Kotaro Shirai, Toyoho Ishimura, Tomihiko Higuchi
Summary: Using high-resolution stable isotope and microstructure analyses, this study reveals that sardine populations in the western and eastern North Pacific have different early life metabolic and growth rates that respond contrastingly to temperature variations. These findings could explain observations of different responses in these populations to decadal-scale temperature anomalies.
NATURE COMMUNICATIONS
(2022)
Article
Ecology
Olivier Morissette, Clive N. Trueman, Anna M. Sturrock, Audrey J. Geffen, Kotaro Shirai
Summary: Water temperature is vital for studying the ecology of aquatic ectotherms, but validating individual-based thermal experience measurements remains challenging. The stable isotope composition of oxygen in biominerals serves as a natural thermometer due to isotopic fractionation between water and minerals. However, coefficients of published temperature-dependent fractionation equations vary among taxa, suggesting the need for species-specific experimental validation before inferring temperature from biomineral oxygen isotope thermometry.
METHODS IN ECOLOGY AND EVOLUTION
(2023)
Article
Engineering, Marine
Ousmane Sarr, Richard Kindong, Siquan Tian
Summary: Japanese sardine is an important small pelagic fish in the marine ecosystem of the far Eastern Asian waters. Fishing mainly uses purse seines, with catches showing varying trends over the past five decades. Research has focused on spawning migration, distribution, and biology, highlighting the need for further studies to improve conservation efforts.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Biodiversity Conservation
Chao Yang, Haibin Han, Heng Zhang, Yongchuang Shi, Bing Su, Peiwen Jiang, Delong Xiang, Yuyan Sun, Yang Li
Summary: This study assessed the maximum sustainable yield (MSY) and stock resource status of Japanese sardine using historical catch data and biological data. The results indicate a healthy and recovering resource status. The study also proposed management strategies for the species, suggesting setting specific target ranges for the medium and long term. The findings suggest that Japanese sardine fishery resource can be sustainably used on a longer time scale.
ECOLOGICAL INDICATORS
(2023)
Article
Ecology
Ming-Tsung Chung, Kris-Emil Mose Jorgensen, Clive N. Trueman, Halvor Knutsen, Per Erik Jorde, Peter Gronkjaer
Summary: The relationship between physiology and temperature plays a significant role in how populations respond to climate change. Using a new proxy method, researchers estimated the thermal performance curve of field metabolism in wild fish for the first time. They found that the thermal sensitivity of field metabolic rate differed between two genetically distinct ecotypes of Atlantic cod, showing that genetic components play a role in temperature sensitivity beyond acclimation effects.
Article
Engineering, Marine
Qibin Lao, Guoqiang Liu, Jingsong Gao, Youli Shen, Qizhong Su, Chunqing Chen, Fajin Chen
Summary: Isotope measurements in the northeastern Beibu Gulf of China revealed that nitrate sources primarily originated from local pollution sources, with seasonal variations and significant impacts from human activities on the marine ecosystem, resulting in excessive nutrient levels.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Fisheries
E. Dorval, J. D. McDaniel, B. J. Macewicz, D. L. Porzio
JOURNAL OF FISH BIOLOGY
(2015)
Article
Marine & Freshwater Biology
Joel E. Van Noord, Emmanis Dorval
MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE
(2017)
Article
Fisheries
Stephen Ralston, Emmanis Dorval, Laura Ryley, Keith M. Sakuma, John C. Field
FISHERIES RESEARCH
(2018)
Article
Geochemistry & Geophysics
Robyn Hannigan, Emmanis Dorval, Cynthia Jones
Article
Ecology
Emmanis Dorval, Kevin Piner, Larry Robertson, Christian S. Reiss, Barbara Javor, Russ Vetter
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2011)
Article
Fisheries
Emmanis Dorval, Paul R. Crone, Jennifer D. McDaniel
MARINE AND FRESHWATER RESEARCH
(2013)
Article
Fisheries
Chenying Guo, Shin-ichi Ito, Nicholas C. Wegner, Laura N. Frank, Emmanis Dorval, Kathryn A. Dickson, Dane H. Klinger
FISHERIES OCEANOGRAPHY
(2020)
Article
Ecology
Angela D. Klemmedson, Christian S. Reiss, Michael E. Goebel, Ronald S. Kaufmann, Emmanis Dorval, Tomasz B. Linkowski, Renato Borras-Chavez
MARINE ECOLOGY PROGRESS SERIES
(2020)
Article
Environmental Sciences
Chenying Guo, Shin-ichi Ito, Michio Yoneda, Hajime Kitano, Hitoshi Kaneko, Megumi Enomoto, Tomoya Aono, Masahiro Nakamura, Takashi Kitagawa, Nicholas C. Wegner, Emmanis Dorval
Summary: This study examined the swimming performance and metabolism of Pacific chub mackerel from the Northwest and Northeast Pacific stocks, and found intraspecific differences in swimming speed and oxygen consumption rate, indicating that the two stocks have adapted their swimming performance and metabolism to their local environmental conditions.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Fisheries
Emmanis Dorval, Patrick Appel, Megan H. Human, Beverly J. Macewicz, William Watson
CALIFORNIA COOPERATIVE OCEANIC FISHERIES INVESTIGATIONS REPORTS
(2019)
Article
Fisheries
Barbara J. Javor, Emmanis Dorval
CALIFORNIA COOPERATIVE OCEANIC FISHERIES INVESTIGATIONS REPORTS
(2017)
Article
Limnology
E Dorval, CM Jones, R Hannigan
LIMNOLOGY AND OCEANOGRAPHY
(2005)
Article
Fisheries
Emmanis Dorval, Cynthia M. Jones, Robyn Hannigan, Jacques van Montfrans
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2007)
Article
Fisheries
E Dorval, CM Jones, R Hannigan, J van Montfrans
MARINE AND FRESHWATER RESEARCH
(2005)
Article
Fisheries
Miguel Petrere Jr, Davi Butturi-Gomes
Summary: This short communication aims to raise awareness about the misuse of confidence intervals in Ecology and Fisheries statistical models that ignore the lack of independence.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Peter-John F. Hulson, Benjamin C. Williams
Summary: This study evaluates the impact of considering ageing error and growth variability on the determination of input sample size (ISS) in statistical catch-at-age assessment models. The results show that including these sources of uncertainty decreases the ISS determined through bootstrap methods. This indicates that there is more variability in age composition and conditional age-at-length data than previously accounted for. Including these sources of uncertainty improves the estimation of ISS and subsequently improves the quality of stock assessment models.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Jason M. Cope
Summary: Fishery resource assessment is a complex and challenging task, but with the use of different analysis methods and tools, effective management guidance can be provided even with limited data and resources.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Regina L. Cunha, Joana I. Robalo, Sara M. Francisco, Ines Farias, Rita Castilho, Ivone Figueiredo
Summary: Recent advances in genomics have greatly contributed to the assessment of fish stocks by providing precise identification of genetic boundaries. This study used a genotyping-by-sequencing approach to reveal the existence of an additional genetic cluster of blackspot seabream in the northeast Atlantic, which was not previously identified. Factors such as ocean circulation patterns and local upwelling may play a role in the genetic differentiation observed in this study.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Huihua Lee, Mark N. Maunder, Kevin R. Piner
Summary: Estimating growth is important for fish population assessment. Integrated assessment models and the influence of misfitting size composition data have renewed interest in how growth is modeled. The available data types control how the length-at-age relationship is estimated. Estimating length-at-age is complex due to multiple sources of biological variability and difficulties in obtaining representative samples.
FISHERIES RESEARCH
(2024)
Article
Fisheries
A. Ladino, I. Perez-Arjona, V. Espinosa, M. Chillaron, V. Vidal, L. M. Godinho, G. Moreno, G. Boyra
Summary: This study examines the acoustic properties of skipjack tuna and Atlantic mackerel, both bladderless pelagic fish species, and explains the significant differences observed. The research shows that the differences in material properties of their tissues predict a more than 10 dB greater reduced target strength in skipjack compared to mackerel at certain frequencies.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Nelly Pena-Cutimbo, Cristel Cordero-Maldonado, Clara Ortiz-Alvarez, Joanna Alfaro-Shigueto, Jeffrey C. Mangel
Summary: Bycatch is a global problem for marine megafauna. This study assessed the bycatch interactions of the Peruvian artisanal purse-seine fishery in 2019 and found that all taxa groups were affected by bycatch. Dusky dolphins, guanay cormorants, and eagle rays were the most frequently reported bycatch species.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Jen-Ming Liu, Po-Yuk So
Summary: The set-net fishery is an environmentally friendly fishery posing little risk to the marine ecosystem. This study identified ocean temperature, sea surface factors, and climatic factors as the main factors affecting the installation of set-nets.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Josie L. Palmer, Carina Armstrong, Hasan D. Akbora, Damla Beton, Cigdem Caglar, Brendan J. Godley, Kristian Metcalfe, Meryem Ozkan, Robin T. E. Snape, Annette C. Broderick
Summary: Small-scale fisheries are vital for global food security and cultural heritage, but the lack of information hampers effective management and mitigation of ecological impacts. This study provides the first comprehensive overview of the small-scale fishery fleet in Northern Cyprus. The fleet operates mainly over the continental shelf, using static and demersal gear types, and catches a diverse range of species, some of which are threatened. The findings can be used to improve fisheries management and conservation measures.
FISHERIES RESEARCH
(2024)