Empirical evidence for fast temperature-dependent body size evolution in rotifersReportar como inadecuado




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Hydrobiologia

, Volume 796, Issue 1, pp 191–200

First Online: 25 April 2017Received: 20 January 2017Revised: 10 April 2017Accepted: 17 April 2017DOI: 10.1007-s10750-017-3206-3

Cite this article as: Walczyńska, A., Franch-Gras, L. & Serra, M. Hydrobiologia 2017 796: 191. doi:10.1007-s10750-017-3206-3

Abstract

Organisms tend to decrease in size with increasing temperature by phenotypic plasticity the temperature-size rule; ectotherms and-or genetically Bergmann’s rule; all organisms. In this study, the evolutionary response of body size to temperature was examined in the cyclically parthenogenetic rotifer Brachionus plicatilis. Our aim was to investigate whether this species, already known to decrease in size with increasing temperature by phenotypic plasticity, presents a similar pattern at the genetic level. We exposed a multiclonal mixture of B. plicatilis to experimental evolution at low and high temperature and monitored body size weekly. Within a month, we observed a smaller size at higher temperature, as compared to body size at lower temperature. The pattern was consistent for the size of both mature females and eggs; rotifers kept at high temperature evolved to be on average 14% after 2 weeks and 3% after 3 weeks smaller than the ones kept at low temperature 10 and 5% in the case of eggs, respectively. We therefore found that B. plicatilis is genetically programmed to adjust its body size-to-environmental temperature.

KeywordsBergmann’s rule Body size Brachionus plicatilis Experimental evolution Temperature-size rule Guest editors: M. Devetter, D. Fontaneto, C. D. Jersabek, D. B. Mark Welch, L. May and E. J. Walsh - Evolving rotifers, evolving science





Autor: Aleksandra Walczyńska - Lluis Franch-Gras - Manuel Serra

Fuente: https://link.springer.com/







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