Search Results - "Oksanen, T. A."

Sex-specific selection on energy metabolism - selection coefficients for winter survival by BORATYŃSKI, Z, KOSKELA, E, MAPPES, T, OKSANEN, T.A

“…Selection for different fitness optima between sexes is supposed to operate on several traits. As fitness-related traits are often energetically costly,…”
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Maternal effort and male quality in the bank vole, Clethrionomys glareolus by Oksanen, T. A., Alatalo, R. V., Horne, T. J., Koskela, E., Mappes, J., Mappes, T.

“…Parental investment in reproduction is adjusted according to potential benefits in terms of offspring survival and/or mating success. If male quality affects…”
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Optimal allocation of reproductive effort: manipulation of offspring number and size in the bank vole by Oksanen, Tuula A., Jonsson, Pernilla, Koskela, Esa, Mappes, Tapio

“…Clethrionomys glareolus…”
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Cost of Reproduction in the Wild: Manipulation of Reproductive Effort in the Bank Vole by Koivula, Minna, Koskela, Esa, Mappes, Tapio, Oksanen, Tuula A.

“…For three years, we manipulated litter size by adding or subtracting pups in eight wild populations of the bank vole, Clethrionomys glareolus, to examine…”
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Manipulation of Offspring Number and Size: Benefits of Large Body Size at Birth Depend upon the Rearing Environment by Oksanen, Tuula A., Jokinen, Ilmari, Koskela, Esa, Mappes, Tapio, Vilpas, Heli

“…1. Allocation of reproductive effort between the number and size of offspring determines the immediate rearing environment for the growing young. As the number…”
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Offspring Defence in Relation to Litter Size and Age: Experiment in the Bank vole Clethrionomys glareolus by Koskela, Esa, Juutistenaho, Pinja, Mappes, Tapio, Oksanen, Tuula A.

“…According to parental investment theory, nest defence activity should be related to the reproductive value of the offspring. Alternative hypotheses suggest…”
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Gonadotropin Hormone Modulation of Testosterone, Immune Function, Performance, and Behavioral Trade-Offs among Male Morphs of the Lizard Uta stansburiana by Mills, Suzanne C., Hazard, Lisa, Lancaster, Lesley, Mappes, Tapio, Miles, Donald, Oksanen, Tuula A., Sinervo, Barry

“…Sexual selection predicts that trade-offs maintain trait variation in alternative reproductive strategies. Experiments often focus on testosterone (T), but the…”
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SIGNAL RELIABILITY COMPROMISED BY GENOTYPE-BY-ENVIRONMENT INTERACTION AND POTENTIAL MECHANISMS FOR ITS PRESERVATION by Mills, Suzanne C., Alatalo, Rauno V., Koskela, Esa, Mappes, Johanna, Mappes, Tapio, Oksanen, Tuula A.

“…Sexual selection based on signaling requires that signals used by females in mate choice are reliable indicators of a male's heritable total fitness. A signal…”
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Hormonal Manipulation Of Offspring Number: Maternal Effort And Reproductive Costs by Oksanen, T A, Koskela, E, Mappes, T

“…We used exogenous gonadotropin hormones to physiologically enlarge litter size in the bank vole (Clethrionomys glareolus). This method allowed the study design…”
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HORMONAL MANIPULATION OF OFFSPRING NUMBER: MATERNAL EFFORT AND REPRODUCTIVE COSTS by Oksanen, Tuula A, Koskela, Esa, Mappes, Tapio

“…We used exogenous gonadotropin hormones to physiologically enlarge litter size in the bank vole (Clethrionomys glareolus). This method allowed the study design…”
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