Results 51 to 60 of about 3,658 (231)

Visual Modelling to Predict Behavioural Responses of Catsharks, Skates, and Plaice to Artificial Light for Use in Bycatch Reduction

Fisheries Management and Ecology, EarlyView.
ABSTRACT Light can be used to deter bycatch from fishing nets, but few studies have aimed to quantify how species view and respond to light. Here, we used visual models to predict how target (plaice Pleuronectes platessa) and bycatch (small‐spotted catshark Scyliorhinus canicular and undersized skates, Raja spp) species, captured in mixed demersal ...
Jasmine Somerville, Jon Blount, Martin Stevens   +2 more
wiley   +1 more source

Morphology of blue eye skate, Raja ocellifera Regan, 1906 (Family: Rajidae) the Namibian shelf [PDF]

Acta Ichthyologica et Piscatoria, 1986
Metric characters and number of spines along the body axis were determined, using percentage indices, in a population of Raja ocellifera from the SW African fishing grounds. Sexual dimorphism in secondary sex attributes was found in the population.
S. Krzykawski, A. Dubas
doaj   +3 more sources

Drivers of the spatial behaviour of the threatened thornback skate (Raja clavata)

Aquatic Living Resources, 2023
Fish movements are fundamental to their ecology and survival. Understanding the causes and consequences of the spatial behaviour of fish is of high relevance as it provides critical knowledge for conservation purposes. Skate (Rajidae) populations face an
Papadopoulo Kenn, Villegas-Ríos David, Mucientes Gonzalo, Hillinger Alina, Alonso-Fernández Alexandre   +4 more
doaj   +1 more source

Lack of Lumpfish (Cyclopterus lumpus) Susceptibility to the Infectious Salmon Anaemia Virus (ISAV) Using In Vivo Challenges

Journal of Fish Diseases, EarlyView.
ABSTRACT Infectious salmon anaemia virus (ISAV) can cause disease and mortality in Atlantic salmon (Salmo salar). The virus is endemic in several regions including the Atlantic coast of Canada. Lumpfish (Cyclopterus lumpus) are increasingly utilised as cleaner fish to control sea lice levels in Atlantic salmon farms.
Nellie Gagné, Delphine Ditlecadet, Kristine Hébert, Chantal Audet, Steven Leadbeater, Andrew K. Swanson   +5 more
wiley   +1 more source

Comparative Morphology of Digestive Tract Among 11 Different Marine Fish Species

Aquaculture Research, Volume 2026, Issue 1, 2026.
Limited information is available about the digestive tract morphology and function in some marine fish species. Using anatomical methods, this study compared the morphological characteristics of the digestive tract among 11 marine fish species of different taxonomic status, feeding habits and ecological niches.
Zhengwei Ye, Haoxuan Li, Yanjiao Zhang, Jiahao Liu, Qiang Ma, Yuliang Wei, Mengqing Liang, Houguo Xu   +7 more
wiley   +1 more source

Tasa de oviposición de la raya marmolada Sympterygia bonapartii (Elasmobranchii, Rajidae) (Müller & Henle, 1841) mantenida en cautiverio [PDF]

, 2009
Se registró la tasa de oviposición de Symperygia bonapartii en cautiverio. En un período de un año una hembra depositó 152 ovicápsulas a una tasa de 0.4 huevos por día y la otra depositó 200 ovicápsulas a una tasa de 0.5 huevos por día.The oviposition ...
Jañez, Julieta A., Sueiro, Maria Cruz
core  

Development and evolution of dentition pattern and tooth order in the Skates and Rays (Batoidea; Chondrichthyes) [PDF]

, 2015
Shark and ray (elasmobranch) dentitions are well known for their multiple generations of teeth, with isolated teeth being common in the fossil record.
Fraser, G.J., Johanson, Z., Metscher, B., Rasch, L.J., Smith, M.M., Underwood, Charlie J., Viriot, L., Welten, M.   +7 more
core   +12 more sources

The impact of trammel nets as an MPA soft bottom monitoring method

Ecological Indicators, 2021
With the global increase of marine protected area (MPA) implementation, the need for monitoring and the evaluation of their effectiveness becomes ever more important.
C. Robert Priester, Lucas Martínez-Ramírez, Karim Erzini, David Abecasis   +3 more
doaj   +1 more source

Emerging patterns of species richness, diversity, population density, and distribution in the skates (Rajidae) of Alaska [PDF]

, 2008
Six years of bottom-trawl survey data, including over 6000 trawls covering over 200 km2 of bottom area throughout Alaska’s subarctic marine waters, were analyzed for patterns in species richness, diversity, density, and distribution of skates. The Bering
Hoff, Gerald R., McEachran, John D., Orr, James W., Stevenson, Duane E.   +3 more
core  

Fishers' Local Ecological Knowledge Reveals Complex Food Web Dynamics With Rapidly Warming Waters

Fish and Fisheries, Volume 26, Issue 6, Page 1122-1133, November 2025.
ABSTRACT Local ecological knowledge (LEK) can provide insight into ecosystem change, particularly in dynamic ecological conditions, such as those driven by climate change. In New England lobster fisheries, warming waters have the potential to disrupt food webs, as range‐shifting species introduce novel ecological interactions.
Loren McClenachan, Benjamin Neal, Marissa McMahan, Ellie Batchelder, Neida Villanueva‐Galarza, Jonathan Grabowski   +5 more
wiley   +1 more source