PMID- 25994492
OWN - NLM
STAT- MEDLINE
DCOM- 20160420
LR  - 20181113
IS  - 1432-136X (Electronic)
IS  - 0174-1578 (Linking)
VI  - 185
IP  - 6
DP  - 2015 Aug
TI  - Adaptive considerations of temperature dependence of neuromuscular function in 
      two species of summer- and winter-caught Crab (Carcinus maenas and Cancer 
      pagurus).
PG  - 629-36
LID - 10.1007/s00360-015-0912-x [doi]
AB  - The aim of this study was to determine seasonal differences in the temperature 
      dependence of neuromuscular parameters of the dactylopodite walking leg closer 
      muscle in two species of freshly caught summer and winter decapod crabs. The 
      relatively stenothermal Cancer pagurus (Cp) and eurythermal Carcinus maenas (Cm) 
      muscle resting potential (RP) hyperpolarised significantly with increasing 
      experimental temperature. The muscle RP in Cm was seasonally dependent at acute 
      temperatures above 20  degrees C whereas in Cp no seasonal effect was observed. The 
      latent period of the muscle excitatory junction potential (EJP) following tonic 
      motor nerve stimulation was significantly longer in winter-caught crabs in both 
      species, although the effect was significantly more marked in Cp than Cm. 
      Summer-caught Cp had larger excitatory junction potentials (EJPs) than did 
      winter-caught crabs, a seasonal effect not seen in Cm. In contrast, marked 
      seasonal differences were found in the EJP decay time constant in Cm having 
      significantly longer time constants in winter-caught crabs, where no seasonal 
      difference was found in Cp. These results suggest that different seasonal effects 
      of neuromuscular parameters between Cm and Cp may reflect different strategies of 
      response to their different seasonal temperature environments.
FAU - Hyde, D
AU  - Hyde D
AD  - Department of Biological and Biomedical Sciences, University of Durham, South 
      Road, Durham, DH1 3LE, UK, david.hyde@dur.ac.uk.
FAU - Pearson, T
AU  - Pearson T
FAU - Qari, S
AU  - Qari S
FAU - Bowler, K
AU  - Bowler K
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20150521
PL  - Germany
TA  - J Comp Physiol B
JT  - Journal of comparative physiology. B, Biochemical, systemic, and environmental 
      physiology
JID - 8413200
SB  - IM
MH  - Adaptation, Physiological
MH  - Animals
MH  - Brachyura/*physiology
MH  - Muscle, Skeletal/*physiology
MH  - Seasons
MH  - Species Specificity
MH  - Temperature
EDAT- 2015/05/23 06:00
MHDA- 2016/04/21 06:00
CRDT- 2015/05/22 06:00
PHST- 2014/12/30 00:00 [received]
PHST- 2015/05/13 00:00 [accepted]
PHST- 2015/05/06 00:00 [revised]
PHST- 2015/05/22 06:00 [entrez]
PHST- 2015/05/23 06:00 [pubmed]
PHST- 2016/04/21 06:00 [medline]
AID - 10.1007/s00360-015-0912-x [doi]
PST - ppublish
SO  - J Comp Physiol B. 2015 Aug;185(6):629-36. doi: 10.1007/s00360-015-0912-x. Epub 
      2015 May 21.