Producción y rendimiento reproductivo en Petrolisthes granulosus (Decapoda, Anomura, Porcellanidae) en diferentes localidades del norte de Chile: Una comparación latitudinal

Abstract

La variación latitudinal en la ecología reproductiva de una misma especie constituye información relevante que permite conocer las adaptaciones al ambiente (Sastry, 1970). En el pasado, varios autores han propuesto y discutido la respuesta reproductiva

Sexual maturity and egg production in an unexploited population of the red squat lobster Pleuroncodes monodon (Decapoda, Galatheidae) from Central America

“…A similar latitudinal trend has been observed in other decapods (e.g. Thorson, 1950;Sastry, 1983;Hernáez, 2001); however, to the best of our knowledge, this is the first evidence of such a latitudinal gradient in egg production in galatheids.…”

“…However, life history features might change with latitude in species with a wide latitudinal distribution such as P. monodon. This conclusion is supported by different studies relating latitude to body size (Atkinson and Sibly, 1997;Angilletta and Dunham, 2003), sex ratio (Defeo and Cardoso, 2002;Rivadeneira et al, 2010) and reproductive biology (Hernáez, 2001;Lardies and Wehrtmann, 2001).…”

“…This tendency is related to metabolic differences along the latitudinal gradient of the geographical distribution of a species; as a result, individuals grow slower and mature later at lower temperatures than at higher temperatures (Clarke et al, 1991;Hernáez, 2001). In the case of P. monodon, different authors have postulated the existence of a latitudinal cline in the size of sexual maturity (Roa, 1993;Palma and Arana, 1997), a tendency that would be associated with the thermal gradient reported for the Chilean coast (Menzies, 1962).…”

Reproductive plasticity in Petrolisthes armatus (Anomura, Porcellanidae): a comparison between a Pacific and an Atlantic population

“…However, the number of available studies regarding this subject is still limited, which hinders the development of a more complete understanding of the evolution of life-cycle strategies in this highly diverse group of crustaceans (Garcia and Mantelatto 2001). Some studies demonstrated intraspecific differences along latitudinal gradients in the reproductive biology of decapods, including anomuran species (Jones and Simons 1983;Clarke 1987;Wehrtmann and Kattner 1998;Hernáez 2001;Lardies and Wehrtmann 2001;Brante et al 2003;Castilho et al 2007;Terossi et al 2010b). The reasons for the latitudinal cline in reproductive features of marine invertebrates are still under discussion (Clarke 1992(Clarke , 1993Gallardo and Penchaszadeh 2001).…”

Inversión reproductiva de Aratus pisonii (Decapoda: Sesarmidae): diferencias entre hábitats y análisis de rutas

“…La fecundidad, tradicionalmente definida como el número de huevos liberados por una hembra por desove, o durante un periodo determinado durante su ciclo de vida (Hernáez, 2001), constituye una información valiosa la cual permite estimar el potencial reproductivo de una población y realizar estudios comparativos. El esfuerzo reproductivo usualmente definido como la fracción de la energía que un organismo destina a la reproducción (López et al, 1997), puede expresarse como rendimiento reproductivo (Ro) que expresa la relación entre el peso seco de la masa de huevos y del cuerpo de la hembra (Clarke, Hopkins, & Nilssen, 1991).…”