Results 11 to 20 of about 1,859 (226)

On rare skate Bathyraja bergi Dolganov, 1985 from the waters of Russia with notes on its taxonomy

Известия ТИНРО, 2015
Morphological description for 12 specimens of skate Bathyraja bergi caught in the North-West Pacific in 1978-2013. Plastic signs and counts for teeth, vertebras, pectoral fin, and intestinal valve are presented.
Vladimir N. Dolganov, Talija T. Ginanova
doaj   +2 more sources

Biogeographic patterns in the cartilaginous fauna (Pisces: Elasmobranchii and Holocephali) in the southeast Pacific Ocean. [PDF]

PeerJ, 2014
The abundance and species richness of the cartilaginous fish community of the continental shelf and slope off central Chile is described, based on fishery-independent trawl tows made in 2006 and 2007. A total of 194,705 specimens comprising 20 species (9
Bustamante C, Vargas-Caro C, Bennett MB.
europepmc   +3 more sources

Recovering Historical eDNA From Museum-Preserved Filter Feeders via Non-Destructive Metabarcoding. [PDF]

Mol Ecol Resour
ABSTRACT Recent technical advances have significantly enhanced the value of museum specimens for molecular research, with metagenomic and metabarcoding approaches expanding further the utility of museum collections. However, given the finite number of specimens, there is a critical need to move past destructive DNA extraction approaches and to explore ...
Jeunen GJ, Mills S, Bailie M, Mauvisseau Q, Lamare M, Mariani S, Pearman W, Zavodna M, Treece J, Ferreira S, Gemmell NJ.   +10 more
europepmc   +2 more sources

Evaluating ecosystem caps on fishery yield in the context of climate stress and predation. [PDF]

Ecol Appl
Abstract Ecosystem‐based fisheries management strives to account for species interactions and ecosystem processes in natural resource management and conservation. In this context, ecosystem‐wide caps on total fishery catches have been proposed as one tool to manage multispecies fisheries with an ecosystem approach.
Rovellini A, Punt AE, Dorn MW, Kaplan IC, Bryan MD, Adams G, Aydin K, Baker MR, Barnes CL, Ferriss BE, Fulton EA, Haltuch MA, Hermann AJ, Holsman KK, McGilliard CR, McHuron EA, Morzaria-Luna HN, Surma S.   +17 more
europepmc   +2 more sources

Morphology of the unique egg cases of hornsharks (Heterodontiformes: Heterodontidae). [PDF]

J Fish Biol
Abstract Many of the egg cases of oviparous chondrichthyans remain unknown and undescribed in the literature. Egg cases can be a useful taxonomic character for species distinction and can be a valuable indicator of a species distribution in the field.
O'Neill HL, Tokunaga K, White WT.
europepmc   +2 more sources

Spatial distribution, host specificity and genetic diversity of Onchobothrium antarcticum in the Southern Ocean [PDF]

Polish Polar Research, 2021
In this work we summarize the current knowledge on the spatial distribution, host specificity and genetic diversity of Onchobothrium antarcticum, an endemic Antarctic cestode.
Ilya I. Gordeev, Tatyana A. Polyakova, Alexander A. Volkov   +2 more
doaj   +1 more source

Eocene Shark Teeth From Peninsular Antarctica: Windows to Habitat Use and Paleoceanography. [PDF]

Paleoceanogr Paleoclimatol
Abstract Eocene climate cooling, driven by the falling pCO2 and tectonic changes in the Southern Ocean, impacted marine ecosystems. Sharks in high‐latitude oceans, sensitive to these changes, offer insights into both environmental shifts and biological responses, yet few paleoecological studies exist.
Larocca Conte G, Aleksinski A, Liao A, Kriwet J, Mörs T, Trayler RB, Ivany LC, Huber M, Kim SL.   +8 more
europepmc   +2 more sources

Helminths and the stomach contentment of Bathyraja sp. (Rajiformes: Arhynchobatidae) in the Simushir Island area (Pacific Ocean)

Journal of Asia-Pacific Biodiversity, 2020
The offspring of skate Bathyraja sp., caught in the environs of the Simushir Island (Greater Kuril Chain), were studied for infections and stomach contentment.
Ilya Gordeev, Tatyana Polyakova
doaj   +1 more source

Diet and trophic structure of fishes in the Barents Sea: between empty and full stomachs - large individual variability follows a common pattern. [PDF]

J Fish Biol
Abstract More than 27,000 stomachs from 70 species of fish were collected from the Barents Sea in 2015. Quantitative stomach content expressed relative to the body weight of the predator fish (g g−1 as %) varied by four to five orders of magnitude for six species with the largest sample size (Atlantic cod Gadus morhua, haddock Melanogrammus aeglefinus,
Skjoldal HR, Eriksen E, Ono K, Dolgov A.
europepmc   +2 more sources

Additions to the Taxonomy of the Antarctic Dark-Mouth Skate Bathyraja arctowskii (Dollo, 1904), with Descriptions of the Syntypes and Morphology of Teeth, Dermal Denticles and Thorns

Diversity, 2023
The taxonomy of the enigmatic dark-mouth skate, Bathyraja arctowskii (Dollo, 1904), from the Southern Ocean was finally resolved after more than 100 years of ambiguity in 2021.
Simon Weigmann, Thomas Reinecke
doaj   +1 more source