1. Fatty acid composition and ultrastructure of photoreceptive membranes in the crayfish Procambarus clarkii under conditions of thermal and photic stress

   • T. Kashiwagi
   • V. B. Meyer-Rochow
   • E. Eguchi

   ORIGINAL PAPER Pages: 1 - 8

2. Heart rate and plasma lactate responses during submerged swimming and trained diving in California sea lions, Zalophus californianus

   • P. J. Ponganis
   • G. L. Kooyman
   • L. N. Starke

   ORIGINAL PAPER Pages: 9 - 16

3. Bone marrow fat mobilization in relation to lipid and protein catabolism during prolonged fasting in barn owls

   • C. Thouzeau
   • S. Massemin
   • Y. Handrich

   ORIGINAL PAPER Pages: 17 - 24

4. Temperature induced anaerobiosis in two populations of the polychaete worm Arenicola marina (L.)

   • A. Sommer
   • B. Klein
   • H. O. Pörtner

   ORIGINAL PAPER Pages: 25 - 35

5. Oxygen consumption in the foraging honeybee depends on the reward rate at the food source

   • L. Moffatt
   • Josué A. Núñez

   ORIGINAL PAPER Pages: 36 - 42

6. In vitro studies on calcium absorption from the gastrointestinal tract in␣small ruminants

   • Bernd Schröder
   • Ina Rittmann
   • Gerhard Breves

   ORIGINAL PAPER Pages: 43 - 51

7. The effects of hypercapnia on branchial and renal calcium fluxes in the rainbow trout (Oncorhynchus mykiss )

   • W. M. MacKenzie
   • S. F. Perry

   ORIGINAL PAPER Pages: 52 - 60

8. Adaptive responses of aglomerular toadfish to dilute sea water

   • M. D. Baustian
   • S. Q. Wang
   • K. W. Beyenbach

   ORIGINAL PAPER Pages: 61 - 70

9. Temperature regulation and metabolism of an Australian bat, Chalinolobus gouldii (Chiroptera: Vespertilionidae) when euthermic and torpid

   • D. J. Hosken
   • P. C. Withers

   ORIGINAL PAPER Pages: 71 - 80