Results 101 to 110 of about 595 (129)
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Environmental Biology of Fishes, 2011
The feeding ecology of Mustelus schmitti was studied based on analysis of stomach contents of 525 specimens collected from three research cruises carried out during October 2008 to March 2009 on the Argentinean continental shelf (34o45′S–41oS). Generalized Linear Models were used to test the effects of Geographic location, Total Length, Sex and ...
Mauro Belleggia, Daniel E Figueroa
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The feeding ecology of Mustelus schmitti was studied based on analysis of stomach contents of 525 specimens collected from three research cruises carried out during October 2008 to March 2009 on the Argentinean continental shelf (34o45′S–41oS). Generalized Linear Models were used to test the effects of Geographic location, Total Length, Sex and ...
Mauro Belleggia, Daniel E Figueroa
exaly +3 more sources
Low genetic diversity and population structure of the narrownose shark (Mustelus schmitti)
Fisheries Research, 2010Abstract The narrownose smooth-hound shark Mustelus schmitti is a coastal species endemic to the Southwest Atlantic Ocean. As this species is an important fishery resource, there is interest in knowing its genetic population structure. In this study, we used mitochondrial cytochrome b gene sequences to examine the genetic structure of the ...
Silvana Pereyra +2 more
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The dentition of the narrownose smooth-hound shark, Mustelus schmitti
Marine and Freshwater Research, 2014The present study provides a quantitative and qualitative analysis on the dentition of Mustelus schmitti, and estimates the tooth-replacement rate. In total, 47 males and 56 females of M. schmitti were collected on scientific trawl surveys conducted by the National Institute of Fisheries Research and Development (INIDEP) in Argentina during the months ...
Belleggia, Mauro +2 more
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Trophic ecology of Mustelus schmitti (Springer, 1939) in a nursery area of northern Patagonia
Journal of Sea Research, 2011 Abstract Mustelus schmitti is an endangered endemic shark of the southwest Atlantic, and an important economical resource in Argentina, Brazil and Uruguay. The objective of this study was to describe the trophic ecology of M. schmitti in Anegada Bay, its feeding strategy and diet composition, along with the possible dietary shifts, due to season, sex,
Molina, Juan Manuel +1 more
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Journal of Parasitology, 1997
A new cestode, Echinobothrium notoguidoi n. sp., is described from the spiral intestine of the shark Mustelus schmitti, from coastal waters off Mar del Plata, Argentina. This species is distinguished from all others in the genus by a rostellar armature consisting of 2 apical groups of 31 large hooks each, arranged in 2 rows (16 anterior, 15 posterior ...
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A new cestode, Echinobothrium notoguidoi n. sp., is described from the spiral intestine of the shark Mustelus schmitti, from coastal waters off Mar del Plata, Argentina. This species is distinguished from all others in the genus by a rostellar armature consisting of 2 apical groups of 31 large hooks each, arranged in 2 rows (16 anterior, 15 posterior ...
exaly +3 more sources
Hydrobiologia, 2010
The aim of this study was to determine the ontogenetic habitat preferences of the narrownose smooth-hound shark, Mustelus schmitti, in Rio de la Plata and El Rincon coastal areas. There, canonical correspondence analyses of fishery research survey data showed that M.
A J Jaureguizar
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The aim of this study was to determine the ontogenetic habitat preferences of the narrownose smooth-hound shark, Mustelus schmitti, in Rio de la Plata and El Rincon coastal areas. There, canonical correspondence analyses of fishery research survey data showed that M.
A J Jaureguizar
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General and Comparative Endocrinology, 2019
The knowledge of how temperature influences elasmobranchs reproductive physiology allows a better understanding of their reproductive patterns. This study describes the relationship between temperature fluctuations and the plasmatic changes of the sex steroids related to reproduction: testosterone (T), estradiol (E2) and progesterone (P4), throughout ...
Elisio, Mariano +4 more
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The knowledge of how temperature influences elasmobranchs reproductive physiology allows a better understanding of their reproductive patterns. This study describes the relationship between temperature fluctuations and the plasmatic changes of the sex steroids related to reproduction: testosterone (T), estradiol (E2) and progesterone (P4), throughout ...
Elisio, Mariano +4 more
openaire +3 more sources
Revista Chilena De Anatomía, 2002 Los elasmobranquios son modelos naturales espontaneos importantes para el estudio de la hemopoyesis, dado que tienen disecados naturalmente los distintos microambientes inductores. Describimos la microarquitectura y la morfologia celular de las dos estructuras granulopoyeticas principales de Mustelus schmitti (Springer, 1936): los organos epigonal y de
Galíndez, Elena Juana +1 more
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Food Webs, 2021
Abstract The study compares the diet composition between juveniles and adults of the narrownose smooth-hound Mustelus schmitti in areas with and without commercial bottom trawling using stomach contents. Individuals (n = 291) were caught as by-catch by the bottom-trawl shrimp fishery and by coastal sport anglers in Central Patagonia (Southwestern ...
Pasti, Alessandra Tatiana +5 more
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Abstract The study compares the diet composition between juveniles and adults of the narrownose smooth-hound Mustelus schmitti in areas with and without commercial bottom trawling using stomach contents. Individuals (n = 291) were caught as by-catch by the bottom-trawl shrimp fishery and by coastal sport anglers in Central Patagonia (Southwestern ...
Pasti, Alessandra Tatiana +5 more
openaire +2 more sources