Results 11 to 20 of about 3,259 (192)

DNA barcoding unveils skate (Chondrichthyes: Rajidae) species diversity in ‘ray’ products sold across Ireland and the UK [PDF]

open access: yesPeerJ, 2013
Skates are widely consumed across the globe, but many large species are subject to considerable concern regarding their conservation and management. Within Europe such issues have recently driven policy changes so that, for the first time, reports of ...
Andrew Mark Griffiths   +5 more
doaj   +4 more sources

Biología de la raya Psammobatis extenta (Garman, 1913) (Batoidea: Rajidae) Biology of the skate Psammobatis extenta (Garman, 1913) (Batoidea: Rajidae)

open access: yesRevista Chilena de Historia Natural, 2002
Psammobatis extenta es un miembro común de la fauna de rayas de las costas de Sudamérica y su biología ha sido poco estudiada. Se investigaron aspectos de la biología de P.
JUAN M. BRACCINI, GUSTAVO E. CHIARAMONTE
doaj   +2 more sources

Application of spatially robust stereo-BRUV sampling for quantifying fish assemblages in UK marine protected areas. [PDF]

open access: yesEcol Appl
Abstract Marine protected areas (MPAs) often lack adequate data on the status of marine assemblages to support evidence‐based management. Stereo baited remote underwater video (BRUV) systems offer a powerful, low‐cost tool for collecting ecological data, yet they remain underutilized in the North East Atlantic, especially compared to more invasive ...
Exeter OM   +13 more
europepmc   +2 more sources

Änderung wissenschaftlicher Gattungsnamen der Echten Rochen (Raja spp.), Familie Rajidae [PDF]

open access: yes, 2000
Based on a comprehensive compilation and evaluation of hitherto published revisions by international rajid systematists, the U.S. authors McEachran and Dunn (1998) published a summarizing revision on phylogenetic interrelationships within the family Rajidae.
Stehmann, Matthias
openaire   +4 more sources

Growth and mechanical correlations of calcified cartilage in Batoidea: A histomorphological study using the Raja asterias model. [PDF]

open access: yesJ Fish Biol
Abstract This study investigates the growth and calcification of the appendicular skeleton in Raja asterias (Delaroche, 1809), a member of the Batoidea, to explore the relationship between histomorphology and the mechanics of batoid locomotion within the water column. Although much prior research has focused on the “tessellated pattern” in these fishes,
Pazzaglia UE   +6 more
europepmc   +2 more sources

Distribution and taxonomic identity of the species of Narcine (Toperdiniformes: Narcinidae) in the southwestern Atlantic Ocean. [PDF]

open access: yesJ Fish Biol
Abstract The genus Narcine is the most diverse among electric rays of the order Torpediniformes and is also the only electric ray genus with more than one species occurring in South American waters: Narcine brasiliensis and Narcine bancroftii. The first species has been historically described as distributed from Brazil's southeast coast down to ...
Gonçalves Araújo MV   +2 more
europepmc   +2 more sources

Aquatic eDNA outperforms sedimentary eDNA for the detection of estuarine fish communities in subtropical coastal vegetated ecosystems. [PDF]

open access: yesJ Fish Biol
Abstract In South Africa, mangrove forests and seagrass meadows often co‐occur in estuarine systems and in combination host rich, often endemic biodiversity. There is an urgent need to explore community diversity in coastal vegetated ecosystems, given the degrading effects of climate change and anthropogenic pressures.
Rossouw EI, von der Heyden S, Peer N.
europepmc   +2 more sources

Individual Variation in Philopatry Is Unrelated to Activity and Space Use in the Undulate Skate <i>Raja undulata</i>. [PDF]

open access: yesEcol Evol
Consistent individual variation in fine‐scale movement traits is unrelated to movements occurring at larger spatio‐temporal scales in undulate skates (Raja undulata). ABSTRACT Individual variation in behavior is widespread in animals. Movement traits, which describe how individuals interact with their environment, can vary across a range of spatial and
Hillinger A   +5 more
europepmc   +2 more sources

Características histológicas del útero de Sympterygia acuta (Garman, 1877) y Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes; Rajidae) [PDF]

open access: yes, 2013
Los condrictios constituyen un clado sumamente conservado y vulnerable a la explotación, que ha cobrado una importancia creciente en los últimos años. Sin embargo, existe poca información sobre los aspectos morfológicos relacionados con la reproducción ...
Díaz Andrade, María Constanza   +2 more
core   +1 more source

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