Endogenous control of migration and calendar effects in an intratropical migrant, the yellow-green vireo
Article Abstract:
The time course for moult, migratory fattening and autumn migration in juveniles of several bird species that breed in the temperate zone is controlled through endogenous circannual rhythms. Hand-reared wild-caught nestling yellow-green vireos under a constant photoperiod was conducted and was monitored for the expression of juvenile moult, migratory fattening and migratory activity
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2004
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Plumage colour is related to ectosymbiont load during moult in the serin, Serinys serinus: an experimental study
Article Abstract:
A study was conducted, with observational data and experimental results of endoparasites, to test the impact of ecosymbionts in particular feather mites on plumage brightness. The result revealed that ectosymbionts have a negative impact on the characteristics of the plumage developed, and consequently can signal the healthiness of their hosts.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2003
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Genetic variation and task specialization in the desert leaf-cutter ant, Acromyrex versicolor
Article Abstract:
The genetic effects on worker task performance in the desert leaf-cutter ant, Acromyrmex versicolor, are studied. The results suggest that the division of labor is affected by genetic variations on individual task preference and age-related task choice, but not on variation in activity level.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2004
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