INVESTIGADORES
LOPEZ Laura Susana
artículos
Título:
Sexual dimorphism in a freshwater atyid shrimp (Decapoda: Caridea) with direct development: a geometric morphometrics approach
Autor/es:
SGANGA DE; FERNANDEZ PIANA LR ; LÓPEZ GRECO LS
Revista:
ZOOTAXA
Editorial:
MAGNOLIA PRESS
Referencias:
Lugar: Auckland; Año: 2016 vol. 4196 p. 120 - 128
ISSN:
1175-5326
Resumen:
Neocaridina davidi is a caridean shrimp that has gained popularity in recent years as an ornamental species. Using geometricmorphometrics, we investigated sexual dimorphism in carapace and second abdominal segment shape of N. davidi.Adult females displayed a more elongated carapace and a longer rostrum than males. However, male carapace shape wassimilar to that of juvenile females. The second abdominal pleura was more elongated and wider in adult females than inmales. Significant differences were found in centroid size for the carapace and the second abdominal segment betweensexes, which is consistent with sexual size dimorphism. This results support the hypothesis of a ?pure search? mating systemin N. davidi, where small males search actively for receptive females, and after insemination they continue searching.
