Amphipods: Sex-dependent responses

A study demonstrated that the responses of amphipods to ultraviolet radiation depend on the sex.

field work at the intertidal zone

The intertidal are important areas for feeding, refuge and nursery of several species. We studied the combined effect of solar radiation and diet in one of the most abundant crustaceans of the Patagonian intertidal, the amphipod Ampithoe valida.

The response of amphipods was different depending on their sex. UVR did not affect the survival of males but it did in females, even when they accumulated higher amounts of photoprotective compounds (acquired through the diet).

The article was published in the Journal of Photochemistry and Photobiology B: Biology (click to view the webpage).

Complete reference

Valiñas, M.S., E.W. Helbling. 2015. Sex dependent effects of ultraviolet radiation on the marine amphipod Ampithoe valida (Ampithoidae). Journal of Photochemistry and Photobiology B: Biology. En Prensa.


This work was supported by Consejo Nacional de Investigaciones Científicas y Técnicas – CONICET, Agencia Nacional de Promoción Científica y Tecnológica – ANPCyT y Fundación Playa Unión.