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Androgen levels of reproductive competitors in a co‐operatively breeding cichlid

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Androgen levels of family groups of Neolamprologus pulcher were assessed using non‐invasive methods. There were no significant differences in the excretion rates neither of testosterone nor of 11‐ketotestosterone between territorial and helper males.

Document Type: Research Article


Affiliations: 1: Unidade de Investigação em Eco-Etologia, Instituto Superior de Psicologia Aplicada, Rua Jardim do Tabaco 34, 1149–041 Lisboa, Portugal, 2: Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, 800–117 Faro, Portugal and 3: Department of Behavioural Ecology, Zoological Institute, University of Bern, Wohlenstrasse 50a, CH-3032 Hinterkappelen, Switzerland

Publication date: 2003-12-01

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