Locomotor performance and dominance in male Tree Lizards, Urosaurus ornatus
نویسندگان
چکیده
منابع مشابه
Immune function varies with reproductive stage and context in female and male tree lizards, Urosaurus ornatus.
Competition among physiological processes for limited resources often results in trade-offs. Key among these processes is reproduction and immune function, and optimizing both appears to be difficult. To test the hypothesis that the resource demands of reproduction compromise immune function, we measured rates of wound healing, an integrated measure of innate immunity, across different reproduc...
متن کاملThe effects of stress on wound healing in male tree lizards (Urosaurus ornatus).
Exposure to stress can affect an organism's partitioning of resources among immune function and other organismal functions. However, measuring immune function is often difficult. Recent studies show that the rate of cutaneous wound healing in laboratory rodents is a simple, integrated measure of stress-sensitive immune function. We investigated the use of this technique in tree lizards to test ...
متن کاملImmune activity suppresses reproduction in food - limited female tree lizards ( Urosaurus ornatus )
1. When resources are scarce, organisms are faced with critical challenges trying to optimize competing functions. Reproduction and immune function are both resource intensive and important to most species. Most studies have reported a down-regulation of immune function during reproduction. Conversely, it is unclear whether mounting an immune response can affect the reproductive process and few...
متن کاملLocomotor Capacity and Social Dominance in Male Lizards
Physiological capacities may constrain behavioural options and hence have important ecological consequences. We tested the hypothesis that social dominance is related to capacities for locomotor performance in territorial male lizards (Sceloporus occidentalis Baird & Girard). We first measured the maximal sprint speed and stamina of individual lizards in the laboratory. Pairs of size-matched ma...
متن کاملPreference for Male Traits Differ in Two Female Morphs of the Tree Lizard, Urosaurus ornatus
Non-random female mating preferences may contribute to the maintenance of phenotypic variation in color polymorphic species. However, the effect of female preference depends on the types of male traits used as signals by receptive females. If preference signals derive from discrete male traits (i.e., morph-specific), female preferences may rapidly fix to a morph. However, female preference sign...
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ژورنال
عنوان ژورنال: Functional Ecology
سال: 2000
ISSN: 0269-8463
DOI: 10.1046/j.1365-2435.2000.00427.x