Results 71 to 80 of about 754 (197)

A Machine Learning Technique for Deriving the Optimal Mesh Size of a Gizzard Shad (Konosirus punctatus) Gillnet

Journal of Marine Science and Engineering
Gizzard shads are facing a continual decline in population, necessitating the implementation of selective gear design for effective resource management.
Myungsung Koo, Inyeong Kwon
doaj   +1 more source

The fishery of tamoatá Hoplosternum littorale (Hancock, 1828) (Siluriformes: Callichthyidae) in the Marajó Island [PDF]

Boletim do Museu Paraense Emílio Goeldi. Ciências Humanas, 2008
Hoplosternum littorale (Hancock, 1828) (Siluriformes, Callichthyidae) is a middle size catfish, known in the Brazilian Amazon as ‘tamoatá’. It uses an accessory air-breathing organ to live in the poor oxygen swamps of the mouth of Amazon and Orinoco ...
Adna Almeida de Albuquerque, Ronaldo Borges Barthem   +1 more
doaj  

Marine heatwaves shape size‐dependent thermal exposure, habitat use and marine residency in Arctic char (Salvelinus alpinus)

Journal of Fish Biology, EarlyView.
Abstract Marine heatwaves (MHWs) are increasing in high‐latitude oceans, yet behavioural responses of anadromous fishes to these potential stressors during short marine feeding seasons remain poorly understood. We combined acoustic telemetry (internal temperature and depth) with satellite‐derived sea surface temperature data to quantify Arctic char ...
Jessica E. Desforges, David Côté, Joey Angnatok, J. Brian Dempson, Travis E. Van Leeuwen   +4 more
wiley   +1 more source

Estimating effort by the Irish gillnet fishery

, 1992
In order to reach an estimate of the amount of gill-net set, potential sources of information are reviewed. The principal enmeshing gears in Irish waters are briefly described. The following sources of information are examined on the extent of the fishery: salmon drift net licence sales figures, the register of fishing vessels, The European Communities'
Fahy, E, O'Donoghue, S, O'Driscoll, M
openaire   +1 more source

Marine migration influences mercury accumulation in anadromous Arctic char (Salvelinus alpinus)

Journal of Fish Biology, EarlyView.
Abstract Mercury (Hg) is a globally distributed toxic metal present in northern natural environments that biomagnifies in food webs and bioaccumulates in apex predator fish, such as Arctic char (Salvelinus alpinus)—an iteroparous species with a circumpolar distribution. Arctic char exhibit a variety of life history types, with the migrating, anadromous
Isabel R. Hilgendag, Michael Power, Mehdi M. Aqdam, Christopher W. Lewis, Zoya Martin, Ashley D. Ehrman, Heidi K. Swanson   +6 more
wiley   +1 more source

Marine Bird Bycatch in Alaska Salmon Gillnet Fisheries

Fisheries Management and Ecology
ABSTRACTIncidental catch in gillnet fisheries has a substantial conservation impact on marine diving birds. We synthesized available marine bird bycatch data from Alaska salmon gillnet fisheries to estimate standardized bycatch rates, model factors influencing bycatch rates, and estimate total bycatch.
Kimberly S. Dietrich, Katherine J. Kuletz, Michael A. Moon   +2 more
openaire   +1 more source

Nodular Lesions in the Pyloric Caeca of Sardinella aurita (Teleostei) Associated With the Cestode Anthobothrium sp. 1 Larvae (Platyhelminthes: Eucestoda) Off Tunisia, Mediterranean Sea

Journal of Fish Diseases, EarlyView.
ABSTRACT Examination of round sardinella Sardinella aurita Valenciennes, 1847 (Clupeidae) from the Gulf of Tunis (Tunisia) revealed the first local and Mediterranean record of Anthobothrium sp. 1 sensu Jensen & Bullard, 2010 (Tetraphyllidea incertae sedis, Anthobothrium).
Chiraz Ben Saad, Jean‐Lou Justine, Jihene Jouini, Delphine Gey, Stefan Theisen, Harry W. Palm, Lamia Gargouri   +6 more
wiley   +1 more source

Interaction between the California sea lion and the artisanal fishery in La Paz Bay, Gulf of California, Mexico

Ciencias Marinas, 2003
Information about California sea lion prey and the artisanal fishery catch in the area of the Los Islotes sea lion rookery, in northeastern La Paz Bay, México, was examined to estimate potential overlap and competition between these consumers. Sea lions
D Aurioles-Gamboa, F García-Rodríguez, M Ramírez-Rodríguez, C Hernández-Camacho   +3 more
doaj   +1 more source

Discards monitoring in the Gillnet Sole Fishery

, 2011
The Gillnet Sole Fishery Study Group started discards monitoring. Data were supposed to be collected in three different ways: Self-sampling, catch monitoring by means of onboard cameras (CCTV) and monitoring under the Data Collection Regulation.
Quirijns, F.J., Couperus, A.S., van Helmond, A.T.M.   +2 more
openaire   +1 more source

Early results and lessons learned from biomanipulation and chemical restoration of a eutrophic shallow lake

Restoration Ecology, EarlyView.
Abstract Introduction Over 44% of European lakes fail to meet ecological quality standards, prompting substantial investment in lake restoration to achieve good ecological status. Unfortunately, effects are often short‐lived due to persistent internal phosphorus (P) loading and strong cyprinid‐driven bottom‐up control, which limits water quality ...
Emma Polauke, Kaj Sand‐Jensen, Christian Skov, Theis Kragh   +3 more
wiley   +1 more source