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Does specific dynamic action (SDA) regulate return of appetite in the lesser spotted dogfish, Scyliorhinus caniculcla ?
Author(s) -
Sims D. W.,
Davies S. J.
Publication year - 1994
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1994.tb01313.x
Subject(s) - scyliorhinus canicula , biology , juvenile , specific dynamic action , appetite , respirometry , zoology , endocrinology , medicine , metabolic rate , ecology , fish <actinopterygii> , biochemistry , fishery
Specific dynamic action (SDA) and the return of appetite (RA) were measured in juvenile (weight range 10·9–16·3 g) and adult (weight range 588·8–802·2 g) Scyliorhinus canicula by means of respirometry and re‐feeding trials respectively. Juvenile S. canicula consumed relatively more food than the adults at all times indicating faster rates of food processing in juvenile dogfish. At no time during the SDA effect was there any evidence that elevated levels of oxygen consumption completely prevented further food consumption in either adult or juvenile dogfish. The coefficient (Duration SDA /Duration RA ) was similar for both adult (0·52) and juvenile (0·49) S. canicula suggesting that SDA metabolism was closely associated with the processes involved in appetite return.