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• W2031463701 abstract "Like many teleost fishes, bluegill (Lepomis macrochirus) are characterized by sole male parental care of offspring. In addition, bluegill parental males experience cuckoldry by specialized parasitic male morphs. This cuckoldry has previously been shown to influence the expression of parental care behavior. To better understand some of the proximate mechanisms mediating parental behavior, we examined the relationships between circulating steroid hormones, paternity, and parental behavior during the egg and fry stages of care in parentals that spawned during the first third of the breeding season. During the egg stage of care, we found that males with higher paternity had lower levels of testosterone, but there was no relationship between paternity and either 11-ketotestosterone or cortisol. There also was no relationship between the hormones and care behavior comprising fanning of the eggs, nest rim circles, chases of brood predators, or pecking at the eggs (indicative of egg cannibalism), except for a negative relationship between cortisol and pecking behavior. During the fry stage of care, we conversely found that males with higher paternity had higher levels of testosterone and 11-ketotestosterone. There also was a negative relationship between the concentrations of these two androgens and the defensive behavior of males when exposed to a potential brood predator (a pumpkinseed, Lepomis gibbosus). We discuss these results in relation to previous work in fishes and other vertebrate taxa. Overall, our data suggest a complex relationship between circulating steroid hormone levels, paternity and parental behavior." @default.
• W2031463701 created "2016-06-24" @default.
• W2031463701 creator A5007234854 @default.
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• W2031463701 date "2009-08-01" @default.
• W2031463701 modified "2023-09-27" @default.
• W2031463701 title "Paternity, parental behavior and circulating steroid hormone concentrations in nest-tending male bluegill" @default.
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• W2031463701 doi "https://doi.org/10.1016/j.yhbeh.2009.05.002" @default.
• W2031463701 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19446557" @default.
• W2031463701 hasPublicationYear "2009" @default.
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