Allometry of Reproduction in Poikilotherm and Homoiotherm Vertebrates

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A comparison of 26 allometric empiric equations relating animal body weight and progeny weight, size and weight of the clutch, as well as the accompanying processes in various classes of vertebrates has revealed a principle of large-scale transformation specific for poikilotherms and two others specific for homoiotherm birds and mammals. The appearance of huge terrestrial eggs in reptiles and the transition from R-strategy to k-strategy was not accompanied by a rearrangement of the poikilotherm principle of reproduction pattern. Such rearrangement was required after the appearance of homoiotherm embryo and obligate parental care.

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