How does temperature affect functional kleptoplasty? Comparing populations of the solar-powered sister-species Elysia timida Risso, 1818 and Elysia cornigera Nuttall, 1989 (Gastropoda: Sacoglossa)

Frontiers in Zoology
Elise M Laetz, Heike Wägele

Abstract

Despite widespread interest in solar-powered sea slugs (Sacoglossa: Gastropoda), relatively little is know about how they actually perform functional kleptoplasty. Sister-taxa Elysia timida and E. cornigera provide an ideal model system for investigating this phenomenon, since they feed on the same algal genus and only E. timida is capable of long-term kleptoplasty. Recent research has explored factors regarding functional kleptoplasty in E. timida, including their starvation longevity, digestive activity, autophagal response and photosynthetic efficiency under two different temperature conditions (18 °C and 21 °C). These studies revealed the trends E. timida displays regarding each factor during starvation as well as influences temperature has on some aspects of functional kleptoplasty. This study examines E. cornigera regarding each of these factors in an attempt to elucidate differences between each species that could explain their differing kleptoplastic abilities. Since both species naturally occur in 25 °C seawater (E. timida peak summer temperature, E. cornigera low winter temperature), each species was acclimatized to 25 °C to facilitate comparison and determine if these species exhibit physiological differences to star...Continue Reading

References

Aug 1, 1969·The Journal of Cell Biology·R K TrenchB G Bystrom
May 12, 2000·Plant Physiology·M E RumphoJ R Manhart
Dec 3, 2009·Frontiers in Zoology·Katharina HändelerHeike Wägele
Nov 22, 2013·Proceedings. Biological Sciences·Gregor ChristaSven B Gould
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Feb 6, 2015·Proceedings. Biological Sciences·Jan de VriesSven B Gould
Sep 1, 2015·Genome Biology and Evolution·Cessa RauchSven B Gould

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