IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
artículos
Título:
Different sperm allocation strategies in two populations of the semiterrestrial crab Neohelice granulata (Brachyura, Grapsoidea, Varunidae)
Autor/es:
SAL MOYANO MARIA; GAVIO ANDREA; LUPPI TOMAS
Revista:
MARINE ECOLOGY-PUBBLICAZIONI DELLA STAZIONE ZOOLOGICA DI NAPOLI I
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2015
ISSN:
0173-9565
Resumen:
Sperm reserves are costly to produce and so the development of differentsperm allocation strategies may be advantageous. Knowledge of sperm allocationstrategies is important from an evolutionary perspective because they contributeto characterize mating systems. However, population differences insperm allocation strategies of the same species have rarely been assessed. Here,we studied the male sperm allocation strategies in two different populations ofNeohelice granulata in Mar Chiquita Lagoon (MCL) and San Antonio Oeste(SAO), Argentina. We found that the quantity of ejaculate transferred by N.granulata males depended on different factors such as male size and femalereceptivity duration, while it was independent of female size, at both studyareas. Regarding the operational sex ratio factor, the amount of ejaculate transferreddepended on it in MCL but not in SAO. Thus, N. granulata males mayhave the capacity to regulate the quantity of ejaculate transferred based onindividual factors such as their own size and female receptivity duration, andpopulation factors such as operational sex ratio, which varies in the two populationsstudied.