Results 41 to 50 of about 217 (68)

Precision in the swept area assessments of some demersal coastal fish stocks between 34º S and 42º S, Southwest Atlantic.

open access: yes, 2010
To estimate the biomass of six species, the stratified design used at present for demersal coastal fish stocks is compared against other design alternatives.
Hansen, J.E.   +3 more
core  

Biología reproductiva de dos especies de rayas del golfo San Matías : la raya platana Atlantoraja platana y la raya marmorada Sympterygia bonapartii. Un enfoque morfofuncional

open access: yes, 2017
Los Condrictios son uno de los grupos marinos más vulnerables, con un número creciente de especies listadas “en peligro” o “amenazadas”. La declinación y el colapso global de los stocks pesqueros, debido a la sobreexplotación, va en aumento, con ...
Moya, Ana Carolina
core  

Anisakidae and Anisakidosis: A Public Health Perspective. [PDF]

open access: yesPathogens
Nonković D   +5 more
europepmc   +1 more source

Essential habitat of coastal chondrichthyans (Chondrichthyes) and its relationship with the oceanographic process.

open access: yes, 2012
The relationship between environmental variables (depth, temperature and salinity) and the abundance of sharks (Mustelus schmitti and Squatina guggenheim) and skates (Sympterygia bonapartii, Rioraja agassizi and Atlantoraja castelnaui) was analyzed in ...
Cortés, F.
core  

Morphological variation in a conservative structure: the scapulocoracoids in Sympterygia acuta Garman, 1837 and Sympterygia bonapartii Müller & Henle, 1841 (Chondrichthyes: Rajidae) [PDF]

open access: yesZootaxa, 2017
Scapulocoracoid variation in Sympterygia acuta and S. bonapartii was analyzed inter- and intraspecifically, and the utility of this structure as a diagnostic character in skates was evaluated. Skeletal pieces were obtained from a total of 85 specimens collected in coastal waters of northern Argentina in 2011 and 2012.
Jurado, Carlos David   +2 more
core   +5 more sources

Evaluating the usefulness of natural tags for host population structure in chondrichthyans: Parasite assemblages of Sympterygia bonapartii (Rajiformes: Arhynchobatidae) in the Southwestern Atlantic [PDF]

open access: yesFisheries Research, 2017
Abstract The usefulness of parasite tags for population discrimination of elasmobranch hosts remains largely unexplored. In order to assess the existence of different populations of Sympterygia bonapartii in the Southwestern Atlantic using its parasites as biological tags and to evaluate their usefulness as indicators for chondrichthyan hosts, we ...
Irigoitia, Manuel Marcial   +2 more
openaire   +3 more sources

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