Results 11 to 20 of about 370 (97)

Sympterygia bonapartii, Smallnose Fanskate [PDF]

open access: yesBrazilian Journal of Biology, 2020
The Smallnose Fanskate (Sympterygia bonapartii) is a medium-sized (to 88 cm total length) skate that occurs in the Southeast Pacific in the Strait of Magellan, Chile, and in the Southwest Atlantic from Rio de Janeiro, Brazil to Santa Cruz, Argentina.
Barreto, R.   +11 more
core   +7 more sources

Trophic ecology of the smallnose fanskate Sympterygia bonapartii in the San Matías Gulf, northern Patagonia, Argentina

open access: yesIchthyological Research, 2016
This study quantifies and describes the diet composition and variability, and the trophic ecology of Sympterygia bonapartii (Batoidea: Arhynchobatidae) in the San Matías Gulf, northern Patagonia, Argentina. A total of 1,047 stomachs were analyzed and 98 %
M. Estalles   +2 more
semanticscholar   +4 more sources

Morphology and dynamics of male gametogenesis in Sympterygia bonapartii (Chondrichthyes, Rajidae) from Northern Patagonia [PDF]

open access: yesIheringia. Série Zoologia, 2015
The smallnose fanskate, Sympterygia bonapartii Muller & Henle, 1841 is one of the most disembarked items in commercial harbors in Argentina. In this work, the microscopic architecture of mature male gonads and the dynamics of cysts development are ...
A. C. Moya, M. C. Andrade, E. Galíndez
semanticscholar   +6 more sources

New insights to discriminate between Sympterygia acuta Garman 1877 and Sympterygia bonapartii Müller & Henle, 1841 (Rajidae) of the Southwest Atlantic Ocean: on the use of geometric morphometrics and spinulation patterns

open access: yesJournal of Applied Ichthyology, 2015
Summary Geometric-morphometric and spinulation pattern approaches were employed to assess the discrimination of two species of Sympterygia skates in the Southwest Atlantic: Sympterygia acuta Garman 1877 and Sympterygia bonapartii Muller & Henle, 1841.
P. Orlando   +2 more
semanticscholar   +3 more sources

Estimating tissue-specific discrimination factors and turnover rates of stable isotopes of nitrogen and carbon in the smallnose fanskate Sympterygia bonapartii (Rajidae).

open access: yesJournal of Fish Biology, 2016
This study aimed to estimate trophic discrimination factors (TDFs) and metabolic turnover rates of nitrogen and carbon stable isotopes in blood and muscle of the smallnose fanskate Sympterygia bonapartii by feeding six adult individuals, maintained in ...
D. Galván, J. Jañez, A. Irigoyen
semanticscholar   +4 more sources

Eutetrarhynchid trypanorhynchs (Cestoda) from elasmobranchs off Argentina, including the description of Dollfusiella taminii sp. n. and Parachristianella damiani sp. n., and amended description of Dollfusiella vooremi (São Clemente et Gomes, 1989) [PDF]

open access: yes, 2014
During a parasitological survey of teleosts and elasmobranchs in the Argentine Sea, 3 species of eutetrarhynchids were collected from the batoids Myliobatis goodei Garman and Psammobatis bergi Marini, and the shark Mustelus schmitti Springer.
Andreeva, Elena   +5 more
core   +8 more sources

El sistema reproductor femenino de Zearaja chilensis (Guichenot, 1848) (Chondrichthyes, Rajidae): Gametogénesis y validación microscópica de los criterios de madurez [PDF]

open access: yes, 2015
Los condrictios son extremadamente susceptibles a la explotación pesquera debido, entre otras cosas, a sus adaptaciones reproductivas. Los conocimientos básicos de sus parámetros reproductivos son esenciales, ya sea desde el punto de vista ecológico como
Di Giacomo, Edgardo Ernesto   +2 more
core   +1 more source

Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]

open access: yes, 2018
Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio   +3 more
core   +3 more sources

Avaliação do estresse de captura nas raias emplastro (Sympterygia acuta, S. bonapartii, Rioraja agassizii) endêmicas da América do Sul Subtropical [PDF]

open access: yes, 2022
TCC(graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. OceanografiaCompreender os efeitos fisiológicos do estresse de captura fornece informações fundamentais para a elaboração de planos de manejo adequados ...
Antunes, Lucas Maebara
core  

Size at hatching and incubation period of Sympterygia bonapartii (Muller & Henle, 1841) (Chondrichthyes, Rajidae) bred in captivity at the Temaiken Aquarium

open access: yes, 2007
Two mature Sympterygia bonapartii held in captivity laid a total of 136 egg cases, 33 of them were incubated at constant temperature (16·5° C), salinity (36) and photoperiod (12L:12D). The hatching rate was 100%. Juvenile fish hatched after 135 ± 10 days
J. Jañez, M. C. Sueiro
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy