Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/111404
Título: Ovarian maturity, egg development, and offspring generation of the deepwater shrimp Plesionika edwardsii (Decapoda, Pandalidae) from three isolated populations in the eastern Atlantic
Autores/as: Triay Portella, Raül
Ruiz Díaz, Raquel
Pajuelo, José G.
Escribano, Aitor
González Pérez, José Antonio
Clasificación UNESCO: 240119 Zoología marina
310411 Reproducción
Fecha de publicación: 2016
Editor/a: Universitat d'Alacant 
Conferencia: V Simposio Internacional de Ciencias del Mar 
Resumen: For the first time, ovarian maturity, egg development and brood size were analysed in three isolated populations (the Madeira, Canary and Cape Verde Islands) of Plesionika edwardsii (Decapoda, Panndalidae) in the eastern Atlantic. Multiple different colour patterns were observed in the same ovarian maturity stage, which was verified histologically, invalidating the extensive use of ovarian colour as a maturity stage criterion. The physiological length at sexual maturity, based on the maturity of the ovaries, was higher in Madeira (caarapace length of 19.73 mm) and decreased to Cape Verdes (16.39 mm). Synchronic ovarian maturation was observed during the embryo incubation process, and ovigerous females bearing embryos in the final stage of development were observed throughout the year. Females are multiple spawners during the reproductive season, after which the reproductive process ends and a rest period begins. The absence of females larger than the size–aat-sexual-maturity with ovaries in stage I, the incubation of embryos in the final developmental stages, suggests that the resting period begins with a process that reabsorbs the energy located in the ovaries and that thee resting period occurs asynchronously in females in each of the studied populations. A potential relationship was found between brood size and female body size, and the number of eggs increased significantly with female size in the three study areas. The same egg mass colour pattern can correspond with different embryo developmental stages, thus invalidating the use of egg mass colour as a criterion for developmental stage.
URI: http://hdl.handle.net/10553/111404
ISBN: 978-84-16724-16-1
Fuente: Libro de resúmenes: V Simposio Internacional de Ciencias del Mar, Universidad de Alicante, p. 328-329
Colección:Actas de congresos
Vista completa
Adobe PDF (266,03 kB)

Google ScholarTM

Verifica


Comparte



Exporta metadatos



Los elementos en ULPGC accedaCRIS están protegidos por derechos de autor con todos los derechos reservados, a menos que se indique lo contrario.