Results 21 to 30 of about 16,877 (294)
Multiple paternity and hybridization in two smooth-hound sharks [PDF]
, 2015 Multiple paternity appears to be a common trait of elasmobranch mating systems, with its occurrence likely driven by convenience, due to females seeking to minimize the stress of male harassment.
Gristina, Michele +5 more
core +1 more source
Osmoregulation in Elasmobranchs [PDF]
American Zoologist, 1977 Osmoregulatory mechanisms were examined in major groups of fishes including hagfish, holocephalans, elasmobranchs, the coelacanth, and ray-fin fishes. Four main patterns of body fluid composition emerged. These represent the three main osmoregulatory processes in the marine environment and the one in fresh water.
PETER K. T. PANG +2 more
openaire +1 more source
A new elasmobranch Karksiodus mirus gen. et sp. nov. from the Burtnieki Regional Stage, Middle Devonian of Estonia [PDF]
Estonian Journal of Earth Sciences, 2011 Teeth of a new elasmobranch Karksiodus mirus gen. et sp. nov. were discovered on two levels in the sandstones of the Karksi outcrop (South Estonia), corresponding to the Härma Beds, lower part of the Burtnieki Regional Stage (Givetian, Middle Devonian ...
Alexander Ivanov +2 more
doaj +1 more source
Hatching Strategies in Monogenean (Platyhelminth) Parasites that Facilitate Host Infection [PDF]
, 2011 In parasites, environmental cues may influence hatching of eggs and enhance the success of infections. The two major endoparasitic groups of parasitic platyhelminths, cestodes (tapeworms) and digeneans (flukes), typically have high fecundity, infect more
Armstrong +13 more
core +1 more source
Scientific Reports, 2023 Elasmobranchs, which include sharks and batoids, play critical roles in maintaining the integrity and stability of marine food webs. However, these cartilaginous fish are among the most threatened vertebrate lineages due to their widespread depletion ...
Federico Maioli +7 more
doaj +1 more source
Frontiers in Marine Science, 2021 Elasmobranchs are one of the most endangered vertebrate groups on the planet, but despite this situation the use of reproductive techniques in elasmobranch conservation strategies has been scarce. Among these techniques, sperm preservation is a potential
Pablo García-Salinas +3 more
doaj +1 more source
PLoS ONE, 2020 Effective sampling of marine communities is essential to provide robust estimates of species richness and abundance. Baited Remote Underwater Video Stations (BRUVS) are a useful tool in assessment of fish assemblages, but research on the optimal sampling
Leanne M Currey-Randall +4 more
doaj +1 more source
Spatial heterogeneity in fishing creates de facto refugia for endangered Celtic Sea elasmobranchs. [PDF]
PLoS ONE, 2012 The life history characteristics of some elasmobranchs make them particularly vulnerable to fishing mortality; about a third of all species are listed by the IUCN as Threatened or Near Threatened.
Samuel Shephard +3 more
doaj +1 more source
Ecological Indicators, 2023 Marine biodiversity loss is accelerating, leading to the elevated extinction risks of many species, including sharks and rays. To mitigate these losses, information on their distribution and community composition is needed.
Guido Leurs +10 more
doaj +1 more source
Foliculogénesis Ovárica en la Raya Marmorada, Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) [PDF]
, 2011 Los Condrictios se han convertido en un recurso económico importante en las últimas décadas, siendo Argentina uno de los países que más explota tiburones y rayas, incluso a niveles que exceden los límites de varias especies.
Díaz Andrade, María Constanza +3 more
core +1 more source