Results 61 to 70 of about 1,230 (177)

Molecular identification of sharks from the genus Sphyrna (Elasmobranchii: Chondrichthyes) in Maranhão Coast (Brazil) [PDF]

open access: yesBrazilian Journal of Biology
Sharks of the genus Sphyrna are under intense exploitation globally. In Brazil’s northern coast, this genus represents a high proportion of fisheries landings and comprises four species.
C. F. L. Sodré   +7 more
doaj   +1 more source

Two decades of changes in the global network of illegal wildlife trade

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Understanding how illegal wildlife trade (IWT) has changed over time is fundamental for biodiversity conservation; however, knowledge of the network remains limited. We used TRAFFIC's IWT dataset, legal trade data from the CITES legal wildlife trade database as a benchmark, and network analysis to identify changes in IWT from 2000 to 2022. The
J. H. Tow   +5 more
wiley   +1 more source

Geographical Variation in Body Size and Sexual Size Dimorphism (SSD) in the Epaulette Shark (Hemiscyllium ocellatum)

open access: yesJournal of Biogeography, Volume 53, Issue 4, April 2026.
ABSTRACT Aim Body size is of paramount importance to the survival of all organisms because of the intimate associations between size, physiological processes and ecology. Sexual size dimorphism (SSD: differences in size between the sexes) is a direct consequence of these ecomorphological relationships, arising due to sex‐based differences in selection ...
Joel H. Gayford   +4 more
wiley   +1 more source

STRUKTUR ANATOMIS VALVULA INTESTINALIS PARI GITAR (Rhinobatos typus)

open access: yesFlorea: Jurnal Biologi dan Pembelajarannya, 2019
Rhinobatos typus is included in Elasmobranchii Subclasses which has a unique intestine structure on internal part forms folds called valvula intestinalis as extension surface of food absorption.
Kusrini Kusrini, La Aba
doaj   +1 more source

Some information on reproduction and embryonic development of the lesser guitarfish Zapteryx brevirostris in Southern Brazil [PDF]

open access: yesActa Adriatica, 2007
Individuals of Zapteryx brevirostris were caught from August 2003 to September 2004 using bottom trawl nets in a bay located in Southern Brazil. Total length ranged from 42.8 to 47.3 cm in males and 44.1 to 52.2 cm in females.
Vinícius ABILHOA   +2 more
doaj  

Sensory evaluation of meat Shortfin Mako Shark (Isurus oxyrinchus) (Elasmobranchii: Lamnidae) sold in the city of Niterói, Rio de Janeiro, Brazil

open access: yesBrazilian Journal of Veterinary Medicine, 2015
. Souza A.L.M., Mesquita E.F.M., Franco R.M., Kajishima S., Fonseca A.B.M. & Calixto F.A.A. [Sensory evaluation of meat Shortfin Mako Shark (Isurus oxyrinchus) (Elasmobranchii: Lamnidae) sold in the city of Niterói, Rio de Janeiro, Brazil.] Avaliação ...
André Luiz Medeiros de Souza   +5 more
doaj  

Aspects of the reproductive biology of the shortfin mako, Isurus oxyrinchus (Elasmobranchii Lamnidae), in the Southeastern region of Brazil

open access: yesBrazilian Journal of Biology
Uteri from four pregnant females and two newborn of shortfin mako, Isurus oxyrinchus, were collected in the southeastern region of Brazil, during September, October, and November of 1993 and 1994.
F. E. S. COSTA   +3 more
doaj   +1 more source

A dorsal fold in Gymnura micrura (Bloch and Scheneider, 1801) (Chondrichthyes: Gymnuridae)

open access: yesBrazilian Archives of Biology and Technology, 2009
This paper reports a dorsal fold which is a membranous structure located on the tail of two juvenile butterfly rays, Gymnura micrura (Bloch & Scheneider, 1801), caught through artisanal fishery in the shallow waters of Maranhão State (Brazil).Neste ...
Jorge Luiz Silva Nunes   +1 more
doaj   +1 more source

Diet of the chola guitarfish, Rhinobatos percellens (Rhinobatidae), in the Paranaguá Estuarine complex

open access: yesAnais da Academia Brasileira de Ciências, 2015
The chola guitarfish, Rhinobatos percellens, is one of the most-captured batoids on the Brazilian coast, and an important predator of benthic community. Stomachs from R. percellens were sampled in the Paranaguá estuarine complex (March/2006 to March/2007
Wanessa P.D. do Carmo   +3 more
doaj   +1 more source

Metacercarias del tipo Paramonilicaecum (Digenea: Didymozoidae), parásitos accidentales de elasmobranquios (Elasmobranchii) del golfo de México e identificación de metacercarias (Didymozoidae) de la Colección Nacional de Helmintos Metacercariae of the type Paramonilicaecum (Digenea: Didymozoidae), accidental parasites in elasmobranchs (Elasmobranchii) from the Mexican Gulf of Mexico and identification of metacercarias (Didymozoidae) of the Colección Nacional de Helmintos

open access: yesRevista Mexicana de Biodiversidad, 2011
Como parte de un estudio sobre los helmintos parásitos de rayas (Elasmobranchii), se colectaron 12 ejemplares en 3 localidades del estado de Veracruz, México: Laguna de Tamiahua, Laguna de Tampamachoco y un arrecife de la costa del golfo de México.
Erick Rodríguez-Ibarra   +2 more
doaj  

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