Mitochondrial Genome and Phylogenetic Analysis of the Narrownose Smooth-Hound Shark Mustelus schmitti Springer, 1939 [PDF]
AnimalsSouthern Brazil is home to a large biodiversity of elasmobranchs from the Brazilian coast. Several genera and species of small sharks of the Triakidae family live in this marine environment.
Walter Nisa-Castro-Neto +6 more
doaj +4 more sources
Unusual record of a multiple predation of the Patagonian seahorse Hippocampus patagonicus by the Narrownose smooth-hound Mustelus schmitti in Argentine coastal waters [PDF]
Marine and Fishery Sciences, 2021 Seahorses (Genus Hippocampus) are rarely reported as prey items. Their low population numbers, their ability to blend with the environment and their low palatability are the features making them an unsuitable option for predators. Five individuals of the
Mauro Belleggia +4 more
doaj +5 more sources
Marcación y recaptura del gatuzo (Mustelus schmitti) en el Ecosistema Costero Bonaerense (Argentina) [PDF]
Marine and Fishery Sciences, 2020 El presente trabajo está referido a los primeros resultados obtenidos sobre marcado y recaptura en el gatuzo, Mustelus schmitti, como medio para reconocer sus desplazamientos y migraciones en el Ecosistema Costero Bonaerense (ECB).
Marcelo Pérez +2 more
doaj +11 more sources
Morphological indicators of initial reproductive commitment in Mustelus schmitti (Springer 1939) (Chondrichthyes, Triakidae): folliculogenesis and ovarian structure over the life cycle [PDF]
Brazilian Journal of Biology, 2014 This work provides information about the sexual commitment and the folliculogenesis of the gatuzo, Mustelus schmitti. A total of 112 females of all maturity stages were fished in the Bahía Blanca estuary, between 2009 and 2010.
EJ Galíndez +2 more
doaj +8 more sources
Histochemical study of the oviducal gland and analysis of the sperm storage tubules of Mustelus schmitti Springer, 1939 (Chondrichthyes, Triakidae) [PDF]
Pesquisa Veterinaria Brasileira, 2015 : The paired oviducal glands of immature and mature females of Mustelus schmitti were examined macro and microscopically. Findings indicate that these glands possessed the same zonation as in most chondrichthyans from anterior to posterior: club ...
Fernanda Gabriela Elías
exaly +5 more sources
Distribution patterns and interactions of cestodes in the spiral intestine of the narrownose smooth-hound shark, Mustelus schmitti Springer, 1939 (Chondrichthyes, Carcharhiniformes) [PDF]
Acta Parasitologica, 2006 The distribution patterns and the cestode species interactions within the spiral intestine of 20 specimens of Mustelus schmitti from coastal waters off Mar del Plata, Argentina were studied. Six cestode species were found: Tetraphyllideans Calliobothrium
Ana J Alarcos
exaly +6 more sources
Slippery and Smooth Shark Skin: How Mucus Transforms Surface Texture. [PDF]
J MorpholShark surfaces consist of denticles and a mucus layer, yet mucus is an understudied aspect of shark surfaces. Using gel‐based surface profilometry to visualize and quantify surface texture changes, we found that mucus covered denticles on the dorsal fin tip and tip of the tail's trailing edge.
Fischer MJ, Lauder GV, Wainwright DK.
europepmc +2 more sources
Proteomic analysis of the zone of degeneration at the mitosis-meiosis transition stage in wild-caught male catshark (Scyliorhinus canicula), correlated with an unusually high-water temperature in the English Channel. [PDF]
J Fish BiolAbstract In the context of current global change, variations in water temperature are one of the environmental conditions with serious consequences for marine life, including reproductive processes. In the small spotted catshark Scyliorhinus canicula, spermatogenesis occurs in spermatocysts composed of synchronously developing germ cells associated ...
Jeanne F +4 more
europepmc +2 more sources
Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]
Ecol EvolPredator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S +7 more
europepmc +2 more sources
Brazilian Journal of Oceanography, 2007 A total number of 4824 Mustelus schmitti was sampled. Females ranged from 25 to 93 cm in spring and from 28 to 90 cm in summer. Males ranged from 34 to 82 and from 28 to 77 cm, respectively.
Laura Paesch, Gonzalo Velasco
exaly +3 more sources