FN Archimer Export Format
PT J
TI Social dynamics obscure the effect of temperature on air breathing in   Corydoras   catfish
BT 
AF Pineda, Mar
   Aragao, Isabel
   McKenzie, David
   Killen, Shaun S.
AS 1:1;2:1;3:2;4:1;
FF 1:;2:;3:;4:;
C1 Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
   MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 9190 Montpellier, France
C2 UNIV GLASGOW, UK
   UNIV MONTPELLIER, FRANCE
UM MARBEC
IN WOS Cotutelle UMR
   copubli-europe
IF 3.312
TC 4
UR https://archimer.ifremer.fr/doc/00661/77271/78705.pdf
LA English
DT Article
DE ;Air-breathing fish;Environmental stress;Metabolic rate;Oxygen;Social behaviour
AB In some fishes, the ability to breathe air has evolved to overcome constraints in hypoxic environments but comes at a cost of increased predation. To reduce this risk, some species perform group air breathing. Temperature may also affect the frequency of air breathing in fishes, but this topic has received relatively little research attention. This study examined how acclimation temperature and acute exposure to hypoxia affected the air-breathing behaviour of a social catfish, the bronze corydoras Corydoras aeneus, and aimed to determine whether individual oxygen demand influenced the behaviour of entire groups. Groups of seven fish were observed in an arena to measure air-breathing frequency of individuals and consequent group air-breathing behaviour, under three oxygen concentrations (100%, 60% and 20% air saturation) and two acclimation temperatures (25 and 30°C). Intermittent flow respirometry was used to estimate oxygen demand of individuals. Increasingly severe hypoxia increased air breathing at the individual and group levels. Although there were minimal differences in air-breathing frequency among individuals in response to an increase in temperature, the effect of temperature that did exist manifested as an increase in group air-breathing frequency at 30°C. Groups that were more socially cohesive during routine activity took more breaths but, in most cases, air breathing among individuals was not temporally clustered. There was no association between an individual's oxygen demand and its air-breathing frequency in a group. For C. aeneus, although air-breathing frequency is influenced by hypoxia, behavioural variation among groups could explain the small overall effect of temperature on group air-breathing frequency. 
PY 2020
PD NOV
SO Journal Of Experimental Biology
SN 0022-0949
PU The Company of Biologists
VL 223
IS 21
UT 000590598700009
DI 10.1242/jeb.222133
ID 77271
ER

EF