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Microgeographic variation in the effects of larval temperature environment on juvenile morphology and locomotion in the pool frog
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution.ORCID iD: 0000-0002-6748-966X
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution.
2009 (English)In: Journal of Zoology, ISSN 0952-8369, E-ISSN 1469-7998, Vol. 277, no 4, 267-274 p.Article in journal (Refereed) Published
Abstract [en]

In animals with complex life cycles, the environment experienced early during the development may have strong effects on later performance and fitness. We investigated the intraspecific variation in the effects of larval temperature environment on the morphology and locomotory performance of juvenile pool frogs Rana lessonae originating from three closely located populations of the northern fringe metapopulation in central Sweden. Tadpoles were raised individually at two temperatures (20 and 25 degrees C) until metamorphosis. We measured the morphology of the metamorphs and tested the jumping performance of the froglets after complete tail absorption. We found that early temperature environment affected juvenile morphology, metamorphs from high-temperature environments having relatively longer hindlimbs (tibiofibulas) and longer tails when weight at metamorphosis was accounted for. In absolute terms, froglets from low temperature jumped significantly longer; however, after correcting for size differences the relationship was reversed, individuals raised at high temperature performing better. In both temperatures, relative jumping performance was positively associated with tibiofibula and body length. Populations differed both in metamorphic traits and in jumping capacity, especially at low temperature, suggesting microgeographical variation in temperature sensitivity within the metapopulation. Our results indicate that the temperature environment experienced during the early aquatic stages can influence the morphology and performance of juvenile frogs, and that these effects can be population specific.

Place, publisher, year, edition, pages
2009. Vol. 277, no 4, 267-274 p.
Keyword [en]
complex life cycles, locomotor performance, metamorphosis, temperature, population differentiation
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-129864DOI: 10.1111/j.1469-7998.2008.00530.xISI: 000264346200002OAI: oai:DiVA.org:uu-129864DiVA: diva2:345529
Available from: 2010-08-25 Created: 2010-08-25 Last updated: 2017-12-12Bibliographically approved

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Orizaola, G

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