| Abstract |
Fossorial organisms are periodically subjected to anoxic, sulfide-rich water during tidal exposure.Various physiological mechanisms have evolved that increase the tolerance to these adverse conditions.This study measured the effect of sulfide exposure on oxygen consumption rates as well as sulfide tolerance and sulfide-based ATP production in two species of thalassinid shrimp, Lepidophthalmus louisianensis and Callichirus islagrande.Ventilation rates in the species increased after exposure to anoxia or sulfide, as compared to those exposed to normoxic water.Lepidophthalmus louisianensis appears to have a lower routine oxygen consumption rate than does C.islagrande.Sulfide tolerance and sulfide-based ATP production also appear to be higher in L.louisianensis.This leads to the conclusion that L.louisianensis is more tolerant of anoxia and sulfide than is C.islagrande, and appears to reflect the different habitats preferences of the species |
Bourgeois, R.P. and D.L. Felder (1999) Effects of sulfide and anoxia on the oxygen consumption and ventilation rates of the ghost shrimp Lepidophthalmus louisianensis and Callichirus islagrande. Program and Abstracts of the 1999 The Crustacean Society Summer Meeting.