Bd. Paterson et Mj. Thorne, THE EFFECT OF OXYGEN-TENSION ON THE SWIMMERET RATE OF CALLIANASSA-AUSTRALIENSIS AND C-ARENOSA (CRUSTACEA, DECAPODA, THALASSINIDEA), Marine behaviour and physiology, 24(1), 1993, pp. 15-24
Previous workers have concluded that callianassid burrow ventilation r
epresents a reflex response to declining oxygen tension. However, C. a
ustraliensis increases swimmeret rate when anoxic, whilst C. arenosa r
esponds differently by increasing swimmeret rate as oxygen tension fal
ls (as predicted by the reflex model). None of the shrimps ceased swim
meret ventilation in anoxic conditions. When oxygen tension was raised
after 3-4 h of anoxia, C. australiensis showed a significant fall in
swimmeret activity. The oxygen reflex model cannot apply to all callia
nassids because many species use burrow ventilation for sediment purgi
ng as well as burrow oxygenation. Differences between species may aris
e because of variation in environment, feeding behaviour and anoxia to
lerance.