Effect of gender on physiological and behavioural responses of Gammarus roeseli (Crustacea Amphipoda) to salinity and temperature.
The importance of potentially interacting factors in organisms responses to a stress are often ignored or underestimated in ecotoxicology. In laboratory experiments we investigated how gender, temperature and age influence the behaviour and the physiology of the freshwater amphipod Gammarus roeseli under salinity stress. Our results revealed a significant higher sensitivity of females in survival, ventilation and ionoregulation whereas no inter-age differences were reported. Water temperature also exerted a significant effect in survival and ventilation of G. roeseli. Some of those factors appeared to interact significantly. This study provides evidence that gender can affect organisms responses to a stressor and consequently has to be considered while assessing a stress impact. We discussed the potential relationships between biological and behavioural responses.
Sornom
Pascal
P
Université de Metz, Laboratoire Interactions Ecotoxicologie Biodiversité Ecosystèmes (LIEBE), CNRS UMR 7146, Avenue du Général Delestraint, 57070 Metz, France. pascal.sornom@umail.univ-metz.fr
Felten
Vincent
V
Médoc
Vincent
V
Sroda
Sophie
S
Rousselle
Philippe
P
Beisel
Jean-Nicolas
JN
D033304:Amphipoda / Q000737:chemistry / Q000502:physiology*; D000818:Animals; D001522:Behavior, Animal; D005260:Female; D008297:Male; D054712:Salinity; D012965:Sodium Chloride / Q000378:metabolism*; D013045:Species Specificity; D013696:Temperature
D012965:Sodium Chloride