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Scaling of rectal gland mass in the European lesser-spotted dogfish
 

Summary: Scaling of rectal gland mass in the European
lesser-spotted dogfish
W. G. ANDERSON*, J. P. GOOD, C. E. FRANKLIN
AND N. HAZON
School of Biology, Division of Environmental and Evolutionary Biology, Gatty
Marine Laboratory, University of St Andrews, St Andrews, Fife, Scotland KY16 8LB
and School of Life Sciences, Department of Zoology and Entomology, University
of Queensland, Brisbane Qld 4072, Australia
(Received 12 August 2002, Accepted 29 January 2003)
In the European lesser-spotted dogfish Scyliorhinus canicula, rectal gland mass in mg (MRg)
followed the allometric relationship: MRg 115M068
, where M is body mass (g). The concept
of allometric scaling is an important consideration in studies investigating the function of
osmoregulatory organs. # 2003 The Fisheries Society of the British Isles
Key words: allometry; elasmobranchs; rectal gland; scaling.
The movement of ions, nutrients and energy between the environment and an
animal is governed by the total effective surface area over which exchange takes
place. The relative rate of exchange of ions and compounds is influenced by the
ratio between the surface area and the mass of the animal. As a consequence
many biological traits in animals have been scaled with respect to body size

  

Source: Anderson, W. Gary - Department of Biological Sciences, University of Manitoba

 

Collections: Biology and Medicine