On the Relation between the Temperature and the Respiratory Exchange in Fishes

✍ Scribed by Richard Ege; August Krogh

• Publisher: John Wiley and Sons
• Year: 1914
• Tongue: English
• Weight: 356 KB
• Volume: 7
• Category: Article
• ISSN: 1434-2944
• DOI: 10.1002/iroh.19140070105

✦ Synopsis

In a series of papers one of us') has published researches concerning the influence of temperature of development of embryos of animals belonging to the results of' upon the rate widely different groups and of chrysalides of insects. In all these cases it was found that the processes examined could not be expressed even approximately by the well known formula of v a n ' t Hoff, which will express approximately the relation between the temperature and most chemical reactions and which has been generally supposed to be applicable also to bidogical phenomena of the most divers kind'J.

According to v a n ' t Hoffs formula the velocity of a process increases in geometric progression when the temperature is increased in algebraic progression and w e have V ~+ V = Vt . Q1 or as the formula is generally used

where Q 1 or Qlo is a constant. I) A. C. J o h a n s e n and A. K r o g h , The Influence of Temperature and certain other Factors upon the Rate of Development of the Eggs of Fishes. Conseil international pour l'explor. de la mer. Publications de circonstance, S o . 68, 1914. K r o g h , On the influence of the temperature on the rate of embryonic development. Zeitschr. f. allg. Physiologie, 1913, 16, 163. K r o g h , On the rate of development and COe production of chrysalides of Tenebrio molitor nt different temperatures. b i d . , p. 178. 2, K a n i t z , Zeitschr. f. Elektrochemie 1907. 13, S. 707. S n y d e r , Amer. Journ. of Physiol. 1908, Z, p. 309.

' ) We convinced ourselves by special experiments t>hat thc presence of urethane did not in the least interfere with the oxygen titrations.