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Sexual patterns of ...
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Jönsson, K. Ingemar,1959-Högskolan Kristianstad,Avdelningen för Naturvetenskap,Forskningsmiljön Man & Biosphere Health (MABH),MABH
(author)
Sexual patterns of prebreeding energy reserves in the common frog Rana temporaria along a latitudinal gradient
- Article/chapterEnglish2009
Publisher, publication year, extent ...
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Wiley-Blackwell,2009
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:hkr-5592
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urn:nbn:se:hkr:diva-5592urn
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https://doi.org/10.1111/j.1600-0587.2009.05352.xDOI
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urn:nbn:se:lnu:diva-2032urn
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urn:nbn:se:uu:diva-127503urn
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https://lup.lub.lu.se/record/1489772URI
Supplementary language notes
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Language:English
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Summary in:English
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Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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The ability to store energy is an important life history trait for organisms facing long periods without energy income, and in particular for capital breeders such as temperate zone amphibians, which rely on stored energy during reproduction. However, large scale comparative studies of energy stores in populations with different environmental constraints on energy allocation are scarce. We investigated energy storage patterns in spring (after hibernation and before reproduction) in eight common frog (Rana temporaria) populations exposed to different environmental conditions along a 1600 km latitudinal gradient across Scandinavia (range of annual activity period 3-7 months). Analyses of lean body weight (eviscerated body mass), weight of fat bodies, liver weight, and liver fat content, showed that (i) post-hibernation/pre-breeding energy stores increased with increasing latitude in both sexes, (ii) males generally had larger energy reserves than females and (iii) the difference in energy stores between sexes decreased towards the north. Larger energy reserves towards the north can serve as a buffer against less predictable and/or less benign weather conditions during the short activity period, and may also represent a risk-averse tactic connected with a more pronounced iteroparous life history. In females, the continuous and overlapping vitellogenic activity in the north may also demand more reserves in early spring. The general sexual difference could be a consequence of the fact that, at the time of our sampling, females had already invested their energy into reproduction in the given year (i.e. their eggs were already ovulated), while the males' main reproductive activities (e.g. calling, mate searching, sexual competition) occurred later in the season.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Herczeg, GaborFinland
(author)
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O´Hara, RobertFinland
(author)
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Söderman, FredrikUppsala universitet,Institutionen för ekologi och evolution
(author)
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ter Schure, ArnoutUSA
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Larsson, PerLund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
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Merilä, JuhaFinland
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Jönsson, Ingemar K.
(author)
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ter Schure, Arnout F.H.
(author)
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O'Hara, Robert B.
(author)
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ter Schure, Arnout F. H.
(author)
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Jonsson, Ingemar
(author)
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Merila, Juha
(author)
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Soderman, Fredrik
(author)
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Jonsson, K. Ingemar
(author)
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Högskolan KristianstadAvdelningen för Naturvetenskap
(creator_code:org_t)
Related titles
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In:Ecography: Wiley-Blackwell32:5, s. 831-8390906-75901600-0587
Internet link
- By the author/editor
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Jönsson, K. Inge ...
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Herczeg, Gabor
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O´Hara, Robert
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Söderman, Fredri ...
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ter Schure, Arno ...
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Larsson, Per
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Merilä, Juha
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Jönsson, Ingemar ...
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ter Schure, Arno ...
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O'Hara, Robert B ...
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ter Schure, Arno ...
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Jonsson, Ingemar
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Merila, Juha
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Soderman, Fredri ...
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Jonsson, K. Inge ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
- Articles in the publication
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Ecography
- By the university
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Kristianstad University College
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Linnaeus University