Results 91 to 100 of about 2,847 (184)

A shift in anterior–posterior positional information underlies the fin-to-limb evolution

eLife, 2015
The pectoral fins of ancestral fishes had multiple proximal elements connected to their pectoral girdles. During the fin-to-limb transition, anterior proximal elements were lost and only the most posterior one remained as the humerus.
Koh Onimaru, Shigehiro Kuraku, Wataru Takagi, Susumu Hyodo, James Sharpe, Mikiko Tanaka   +5 more
doaj   +1 more source

Phylogenetic analysis of apicomplexan parasites infecting commercially valuable species from the North-East Atlantic reveals high levels of diversity and insights into the evolution of the group

Parasites & Vectors, 2018
Background The Apicomplexa from aquatic environments are understudied relative to their terrestrial counterparts, and the seminal work assessing the phylogenetic relations of fish-infecting lineages is mostly based on freshwater hosts.
Raquel Xavier, Ricardo Severino, Marcos Pérez-Losada, Camino Gestal, Rita Freitas, D. James Harris, Ana Veríssimo, Daniela Rosado, Joanne Cable   +8 more
doaj   +1 more source

Occurrence of juveniles of Scyliorhinus canicula and Mustelus mustelus in the North-Western Ionian Sea

, 2010
Occurrence of juveniles of Scyliorhinus canicula and Mustelus mustelus was investigated as part of trawl surveys carried out from 1994 to 2009 in the North-western Ionian Sea. Two main finding areas were observed for juveniles of S. canicula and one of M.
SION, LETIZIA, BATTISTA D, PANZA M, Battista, D, CAPEZZUTO, FRANCESCA, PANZA, MICHELE, Capezzuto, F, CARLUCCI, ROBERTO   +7 more
core  

Feeding habits of the small-spotted catshark Scyliorhinus Canicula (l., 1758) in the Central Mediterranean [PDF]

, 2010
The catshark Scyliorhinus canicula is a common demersal elasmobranch in the Mediterranean. It has a wide geographical and bathymetric distribution and is found primarily over sandy, muddy or gravelly bottoms.
Gravino, Francesca, 39th CIESM Congress, Dimech, Mark, Schembri, Patrick J.   +3 more
core  

Antibacterial activity in egg samples from small-spotted catshark Scyliorhinus canicula and nursehound Scyliorhinus stellaris: A preliminary investigation

The study aims to identify antibacterial properties in unfertilized eggs of Scyliorhinus canicula and Scyliorhinus stellaris. Despite challenging marine conditions, these eggs retain their integrity for extended periods and remain unaffected by pathogens.
Reinero F. R., Bertelloni F., Micarelli P., Fratini F., Martinengo E.   +4 more
core   +1 more source

Ocean warming and hypoxia affect embryonic growth, fitness, and survival of small‐spotted catsharks, Scyliorhinus canicula

, 2020
Elasmobranchs are key to a healthy marine ecosystem but are under threat from human activities, such as destructive fisheries and shark finning. Embryos of oviparous elasmobranchs may be further challenged during development by rising temperatures and ...
Moritz, Timo, Timo Moritz, Holly A. Shiels, Ripley, Daniel M., Musa, Syafiq M., Syafiq M. Musa, Daniel M. Ripley, Shiels, Holly A.; id_orcid   +7 more
core   +1 more source

Temporal niche partitioning as a potential mechanism for coexistence in two sympatric mesopredator sharks

Frontiers in Marine Science
Global marine biodiversity declines require bold and ambitious plans to safeguard ecosystem services. Overfishing, habitat loss and projected climate impacts have yielded deleterious effects on marine predators, in particular, driving increasing threat ...
Neil D. Cook, Abbie Jenkins, Sarah L. Perry, Sarah E. Perkins, Jo Cable   +4 more
doaj   +1 more source

Localization and Characterization of Major Neurogenic Niches in the Brain of the Lesser-Spotted Dogfish Scyliorhinus canicula. [PDF]

Int J Mol Sci, 2023
Bagnoli S, Chiavacci E, Cellerino A, Terzibasi Tozzini E.   +3 more
europepmc   +1 more source

A case of hermaphroditism in Scyliorhinus canicula (Linne, 1758)

, 1974
A case of hermaphroditism in the small spotted dogfish Scyliorhinus canicula (Lnne, 1758) is reported. Externally, the specimen is of the adult male morphological type.
Capapé, Ch., Zahnd, J-P.
core  

Characterization of the endogenous intestinal peptide that stimulates the rectal gland of Scyliorhinus canicula

, 1995
It has been postulated that gut peptides play a major role in the regulation of rectal gland secretion in elasmobranchs. An isolated perfused rectal gland secretion in elasmobranchs.
N. Hazon, J. M. Conlon, W. G. Anderson
core   +1 more source