Barremian and Aptian (Cretaceous) sharks and rays from Speeton, Yorkshire, north-east England [PDF]
, 2004 Bulk sampling of a number of horizons within the upper part of the Speeton Clay Type section has produced teeth and other remains of sharks and rays from several poorly studied horizons.
Applegate +34 more
core +1 more source
Operant conditioning as a tool to assess hearing abilities in sharks
Journal of Fish Biology, Volume 103, Issue 2, Page 411-424, August 2023., 2023 Abstract Sharks (elasmobranchs) are an ancient, diverse group of fishes, representing a basal stage in the evolution of vertebrate hearing. Yet, our understanding of behavioural measures of hearing abilities in sharks is limited. To address this, an operant conditioning paradigm was designed, and scalloped hammerhead Sphyrna lewini and rig (spotted ...
Carolin Nieder +5 more
wiley +1 more source
Memorias do Instituto Oswaldo Cruz, 1989 In the present paper, Eutetrahynchus vooremi sp. n., a cestode of the order Trypanorhyncha is proposed. The new species was recovered from sharks under the genus Mustelus (Pisces, Triakidae) and was compared to E. ruficollis, E. lineatus, E. leucomelanus,
Sergio Carmona de São Clemente +1 more
doaj +1 more source
Shark and ray teeth from the Hauterivian (Lower Cretaceous) of north-east England [PDF]
, 1999 Sampling of hiatal horizons within the Hauterivian part of the Speeton Clay Formation of north-east England has produced teeth of several species of sharks and rays, four of which are previously unnamed.
Mitchell, S.F. +2 more
core +1 more source
Brazilian Archives of Biology and Technology, 2002 This paper reports on a subadult male specimen of the smooth dogfish, Mustelus schimitti, caught in the continental shelf of Rio Grande Sul, during winter of 1993, which exhibited the characteristics of total albinism.Este trabalho registra a primeira ...
Simone Ferreira Teixeira +1 more
doaj +1 more source
El sistema reproductor femenino de Zearaja chilensis (Guichenot, 1848) (Chondrichthyes, Rajidae): Gametogénesis y validación microscópica de los criterios de madurez [PDF]
, 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
Trypanorhynch Assemblages Indicate Ecological and Phylogenetical Attributes of Their Elasmobranch Final Hosts [PDF]
, 2017 This study explores non-metric multidimensional scaling (nMDS) as a tool for investigating parasites as indicators of the elasmobranch biology. An attractive feature of nMDS is its ability to allow assemblage-level parasite data to be simultaneously ...
Palm, Harry W. +2 more
core +1 more source
Foliculogénesis Ovárica en la Raya Marmorada, Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) [PDF]
, 2011 Los Condrictios se han convertido en un recurso económico importante en las últimas décadas, siendo Argentina uno de los países que más explota tiburones y rayas, incluso a niveles que exceden los límites de varias especies.
Díaz Andrade, María Constanza +3 more
core +1 more source
New record of the Critically Endangered striped smooth-hound, Mustelus fasciatus (Garman, 1913) (Chondrichthyes, Triakidae), in the Southwest Atlantic [PDF]
Check List, 2018 We report the southernmost known occurrence in the Atlantic Ocean of the striped smooth-hound, Mustelus fasciatus (Garman, 1913). The shark, a female measuring 106 cm TL, was fished in warm coastal waters, with a salinity of 33,189 PSU, of central ...
Juan M. Cuevas +2 more
doaj +3 more sources
Frontiers in Marine Science, 2020 Fishers “local ecological knowledge” (LEK) can be used to reconstruct long-term trends of species that are at very low biomass due to overfishing. In this study, we used historical memories of Sicilian fishers to understand their perception of change in ...
Francesco Colloca +4 more
doaj +1 more source