Two types of dominant male cichlid fish: behavioral and hormonal characteristics
نویسندگان
چکیده
منابع مشابه
Two types of dominant male cichlid fish: behavioral and hormonal characteristics
Male African cichlid fish, Astatotilapia burtoni, have been classified as dominant or subordinate, each with unique behavioral and endocrine profiles. Here we characterize two distinct subclasses of dominant males based on types of aggressive behavior: (1) males that display escalating levels of aggression and court females while they establish a territory, and (2) males that display a stable l...
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In many territorial species androgens respond to social interactions. This response has been interpreted as a mechanism for adjusting aggressive motivation to a changing social environment. Therefore, it would be adaptive to anticipate social challenges and reacting to their clues with an anticipatory androgen response to adjust agonistic motivation to an imminent social challenge. Here we test...
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Behavioral syndromes or animal personalities may emerge due to covariation with different life-history strategies individual animals pursue, like risk-associated feeding rates translating in different growth trajectories. However, less clear is how this might affect individuals in cooperatively breeding species, where subordinates assist dominants in raising offspring, and growth has profound l...
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Gonadotropin-releasing hormone 1 (GnRH1) from the brain controls reproduction in vertebrates via a GnRH-specific receptor in the pituitary; however, other forms of GnRH are found in all species, suggesting additional roles for this family of peptides. GnRH action depends critically on the location of its cognate receptors in the brain. To understand the potential roles of additional GnRH forms,...
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1 Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH, USA 2 Aquatic Behavioural Ecology Laboratory, Department of Psychology, Neuroscience, and Behaviour, McMaster University, Hamilton, ON, Canada 3 Department of Environmental Science and Policy, Duke University, Durham, NC, USA 4 Department of Mathematics, The Ohio State University, Columbus, OH, USA
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ژورنال
عنوان ژورنال: Biology Open
سال: 2016
ISSN: 2046-6390
DOI: 10.1242/bio.017640