FN Archimer Export Format
PT J
TI Influence of temperature on daily locomotor activity in the crab Uca pugilator
BT 
AF MAT, Audrey
   DUNSTER, Gideon P.
   SBRAGAGLIA, Valerio
   AGUZZI, Jacopo
   DE LA IGLESIA, Horacio O.
AS 1:1,3;2:1;3:2,4;4:2;5:1;
FF 1:;2:;3:;4:;5:;
C1 Univ Washington, Dept Biol, Seattle, WA 98195 USA.
   CSIC, ICM, Inst Marine Sci, Barcelona, Spain.
   Univ Bretagne Occidentale, Lab Sci Environm Marin LEMAR, Inst Univ Europeen Mer, CNRS,IRD,Ifremer,UMR 6539, Plouzane, France.
   Leibniz Inst Freshwater Ecol & Inland Fisheries, Dept Biol & Ecol Fishes, Berlin, Germany.
C2 UNIV WASHINGTON, USA
   CSIC, SPAIN
   UBO, FRANCE
   IGB, GERMANY
UM LEMAR
IN DOAJ
IF 2.766
TC 11
UR https://archimer.ifremer.fr/doc/00384/49507/50001.pdf
LA English
DT Article
AB Animals living in the intertidal zone are exposed to prominent temperature changes. To cope with the energetic demands of environmental thermal challenges, ectotherms rely mainly on behavioral responses, which may change depending on the time of the day and seasonally. Here, we analyze how temperature shapes crabs’ behavior at 2 different times of the year and show that a transition from constant cold (13.5°C) to constant warm (17.5°C) water temperature leads to increased locomotor activity levels throughout the day in fiddler crabs (Uca pugilator) collected during the summer. In contrast, the same transition in environmental temperature leads to a decrease in the amplitude of the daily locomotor activity rhythm in crabs collected during the winter. In other words, colder temperatures during the cold season favor a more prominent diurnal behavior. We interpret this winter-summer difference in the response of daily locomotor activity to temperature changes within the framework of the circadian thermoenergetics hypothesis, which predicts that a less favorable energetic balance would promote a more diurnal activity pattern. During the winter, when the energetic balance is likely less favorable, crabs would save energy by being more active during the expected high-temperature phase of the day—light phase—and less during the expected low-temperature phase of the day—dark phase. Our results suggest that endogenous rhythms in intertidal ectotherms generate adaptive behavioral programs to cope with thermoregulatory demands of the intertidal habitat. 
PY 2017
PD APR
SO Plos One
SN 1932-6203
PU Public Library Science
VL 12
IS 4
UT 000400309200019
DI 10.1371/journal.pone.0175403
ID 49507
ER

EF