IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

The anaerobic endproduct lactate has a behavioural and metabolic signalling function in the shore crab
De Wachter, B.; Sartoris, F.J.; Pörtner, H.O. (1997). The anaerobic endproduct lactate has a behavioural and metabolic signalling function in the shore crab. J. Exp. Biol. 200(6): 1015-1024
In: Journal of Experimental Biology. Cambridge University Press: London. ISSN 0022-0949, more
Peer reviewed article  

Available in Authors 

Author keywords
    Crustacea; emergency response; lactate; metabolic signal molecule;preferred temperature; oxygen consumption; biogenic amines; crab;Carcinus maenas; behavioural hypothermia

Authors  Top 
  • De Wachter, B., more
  • Sartoris, F.J.
  • Pörtner, H.O.

Abstract
    This study presents the first evidence that, in invertebrates, the anaerobic endproduct lactate has an alarm signal function and induces metabolic and behavioural responses as in the anuran Bufo marinus. In support of this function, behavioural hypothermia was demonstrated in the shore crab Carcinus maenas. The animals moved to a cooler environment when exposed to hypoxic conditions. A decrease in preferred temperature of the same magnitude was also found when normoxic animals were injected with an iso-osmotic lactate solution resulting in a haemolymph concentration of approximately 12 mmoll(-1). Under normoxic (P-o2=>18kPa) and moderately hypoxic conditions (P-o2=12kPa), injection of this lactate solution also caused a significant increase in the rate of oxygen consumption (100 and 50% respectively). The increase in the rate of oxygen consumption was smaller and delayed, but lasted longer, under hypoxic conditions compared with normoxic conditions, Low but significant correlations between levels of lactate and levels of adrenaline, octopamine and tryptophan suggest the involvement of biogenic amines in the mediation of the signal.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors