TY - JOUR
T1 - Testosterone-induced inhibition of incubation in the spotted sandpiper (Actitis mecularia)
AU - Oring, Lewis W.
AU - Fivizzani, Albert J.
AU - El Halawani, Mohamed E.
PY - 1989/9
Y1 - 1989/9
N2 - The spotted sandpiper (Actitis macularia) is characterized by intense female intrasexual competition and predominantly male parental care. Females often are polyandrous. Incubating males were implanted with testosterone (T)-filled Silastic tubes. Plasma T levels were significantly elevated by T implants while prolactin (Prl) remained unchanged. Birds implanted with T deserted clutches (30%) or exhibited reduced incubation constancy (50%) while controls incubated normally. The T implants appeared to heighten sexual receptivity and hence reduce incubation constancy. Variation in male incubation behavior may have been further influenced by the degree to which males were exposed to courting females.
AB - The spotted sandpiper (Actitis macularia) is characterized by intense female intrasexual competition and predominantly male parental care. Females often are polyandrous. Incubating males were implanted with testosterone (T)-filled Silastic tubes. Plasma T levels were significantly elevated by T implants while prolactin (Prl) remained unchanged. Birds implanted with T deserted clutches (30%) or exhibited reduced incubation constancy (50%) while controls incubated normally. The T implants appeared to heighten sexual receptivity and hence reduce incubation constancy. Variation in male incubation behavior may have been further influenced by the degree to which males were exposed to courting females.
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U2 - 10.1016/0018-506X(89)90053-6
DO - 10.1016/0018-506X(89)90053-6
M3 - Article
C2 - 2793081
AN - SCOPUS:0024467815
VL - 23
SP - 412
EP - 423
JO - Hormones and Behavior
JF - Hormones and Behavior
SN - 0018-506X
IS - 3
ER -