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Testosterone and prolactin concentrations in the cooperatively breeding red-cockaded woodpecker


, : Testosterone and prolactin concentrations in the cooperatively breeding red-cockaded woodpecker. American Zoologist 39(5): 112A


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Related references

Khan, M.Z.; McNabb, F.M.; Walters, J.R.; Sharp, P.J., 2001: Patterns of testosterone and prolactin concentrations and reproductive behavior of helpers and breeders in the cooperatively breeding red-cockaded woodpecker (Picoides borealis). We examined the proximate causes of delayed breeding and alloparental behavior in the cooperatively breeding red-cockaded woodpecker by measuring plasma concentrations of testosterone (T) and prolactin (PRL) in female breeders, male breeders, and...

Haig, S.M.; Walters, J.R.; Plissner, J.H., 1994: Genetic evidence for monogamy in the cooperatively breeding red-cockaded woodpecker. We examined the genetic relationship among putative parents, offspring, and helpers in 224 red-cockaded woodpeckers (Picoides borealis) from the Sandhills of North Carolina. Comparison of DNA similarity with a pedigree constructed from 3,823 indiv...

Reed, J.M.chael; Walters, J.R., 1996: Helper effects on variance components of fitness in the cooperatively breeding red-cockaded woodpecker. Studies of how avian helpers influence reproduction have concentrated on mean effects. We examined the effects helpers have on variance in reproductive success and breeder survival in the Red-cockaded Woodpecker (Picoides borealis). Variance in re...

Malueg, A.L.; Walters, J.R.; Moore, I.T., 2009: Do stress hormones suppress helper reproduction in the cooperatively breeding red-cockaded woodpecker Picoides borealis?. In the cooperatively breeding red-cockaded woodpecker (Picoides borealis), male helpers are subordinate to male breeders and do not mate with females, even when unrelated to the breeding female within their group or through extra-group matings, ye...

Xia, G.L.; Yang, C.R., 1991: The variation in serum prolactin, LH and testosterone concentrations in rams during the breeding season and the effects of prolactin injection. Rams were injected with 1.5 mg prolactin at the start of the breeding season (Aug.) or during the non-breeding season (Sep.). At the start of the breeding season, serum prolactin concentration increased from 104 to 150 ng/ml, and had decreased 1 m...

Walters, Jr; Doerr, Pd; Carter, J.I.i, 1988: The cooperative breeding system of the red-cockaded woodpecker. Ethology 78(4): 275-305

Ligon J.D., 1970: Behavior and breeding biology of the red cockaded woodpecker. Auk 87(2): 255-278

Davis, J.M.; Sieving, K.E.; Kappes, J.J.. Jr.;, 2005: Red-cockaded woodpecker roost-cavity defense during the non-breeding season. Endangered Red-cockaded Woodpeckers (Picoides borealis) experience high rates of roost cavity usurpation by other species. To better understand why this cooperatively breeding species gets displaced from cavities so often and to provide informatio...

Wilson, C.; Masters, R., 1993: Pine-bluestem community restoration, the red-cockaded woodpecker, and breeding birds. Scissortail e; 43(2):

Koenig, WD.; Mumme, RL., 1987: Population ecology of the cooperatively breeding acorn woodpecker. Monographs in Population Biology, i-xiii, 1-435 No. 24