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Comparative study of mathematical models for the relationship between water temperature and brood development time of Gammarus fossarum and G. roeseli (Crustacea: Amphipoda)
Author(s) -
PÖCKL M.,
TIMISCHL W.
Publication year - 1990
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1990.tb00285.x
Subject(s) - amphipoda , biology , gammarus , crustacean , brood , interspecific competition , ecology , zoology
SUMMARY. 1. The relationship between water temperature ( T°C ) and brood development time (d days for embryonic development time plus ‘post‐hatch time’) was investigated experimentally using animals from four populations of Gammarus fossarum (populations 1–4) and two populations of G. roeseli (populations 5 and 6) in Austrian streams. 2. Eleven mathematical models were examined as suitable functions to describe the relationship between d and T . The models were compared with respect to their goodness‐of‐fit and suitability for further quantitative, statistical analyses of intra‐ and interspecific differences between natural populations of G. fossarum and G. roeseli . 3. Statistical analyses were performed with logarithmically transformed values of d , in order to provide homogeneous variances between the different constant temperatures used. The following three‐parameter model was found to be the most suitable for the data:This equation was fitted in its linear form: