Sources of Egg-Size Variation in House Wrens (Troglodytes Aedon): Ontogenetic and Environmental Components
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Alyssa Anderson. EFFECTS OF PREDATORIAL THREATS ON THE PARENTAL BEHAVIOR OF HOUSE WRENS (TROGLODYTES AEDON)
Alyssa Anderson. EFFECTS OF PREDATORIAL THREATS ON THE PARENTAL BEHAVIOR OF HOUSE WRENS (TROGLODYTES AEDON) Predation may be one of the most important factors relating to survivorship and fitness of birds. To deal with this constant threat, birds have had to develop various survivorship strategies to avoid predation while maximizing foraging efficiency and upholding other daily activities. The ...
متن کاملAggressiveness, Boldness and Parental Food Provisioning in Male House Wrens (Troglodytes aedon)
Behavioural syndromes have been identified in a large number of species, yet our understanding of them in an ecological context remains poor. Specifically, there are few data that relate behavioural syndromes to other biologically important behaviours and, ultimately, to reproductive success. In this field study, we examined the aggressiveness and boldness of free-living male house wrens (Trogl...
متن کاملSexual Differences in Life History Traits of Philornis seguyi (Diptera: Muscidae) Parasitizing House Wrens (Troglodytes aedon)
We studied life history traits of Philornis seguyi Garcṍa, 1952 (Diptera: Muscidae) parasitizing house wrens, Troglodytes aedon (Vieillot) (Passeriformes: Troglodytidae), and analyzed sexual differences in the size of larvae, pupae, and adults, as well as in the length of larval and pupal stages and in adult survival. Males were larger than females at the larval, pupal, and adult stages, but th...
متن کاملFemale house wrens (Troglodytes aedon) increase the size, but not immunocompetence, of their offspring through extra-pair mating.
House wrens are typically socially monogamous, but frequently engage in extra-pair matings leading to multisired broods. Because females do not appear to acquire direct material benefits from their extra-pair mates, we tested the hypothesis that female house wrens derive indirect genetic benefits, such as enhanced immunocompetence (cutaneous immune activity, humoral immunity, and plasma bacteri...
متن کاملCutaneous immune activity, but not innate immune responsiveness, covaries with mass and environment in nestling house wrens (Troglodytes aedon).
Immunological measures are increasingly being applied to ecological and evolutionary studies of wild vertebrates, yet frequently it is not clear how condition and environmental factors correlate with various immune parameters. We used mixed-model ANOVA to examine the effects of several measures of condition (both morphological and physiological) and environmental factors on two measures of immu...
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ژورنال
عنوان ژورنال: The Auk
سال: 2002
ISSN: 1938-4254,0004-8038
DOI: 10.1093/auk/119.3.800