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Additional file 4: Table S4. Nest descriptions and observed defense behaviors.
Additional file 2: Table S2. Variation in within-male paternity shares. Paternity of breeding mal... more Additional file 2: Table S2. Variation in within-male paternity shares. Paternity of breeding males recaptured over three years of sampling was determined using nine microsatellite markers (Pmv17, Pzeb3, TmoM11, UNH2075, Hchi59, Hchi94, Ppun9, Ppun20, Ppun21; see main text), and is given in percent of maternal brood size.
Animal Behaviour, 2021
URL: htt In many animal systems, the defence of a territory or nest coincides with the defence of... more URL: htt In many animal systems, the defence of a territory or nest coincides with the defence of offspring, and it is often unclear whether the defence behaviour exists for the purpose of offspring protection, territory protection or a combination of both. In species with biparental care, the drivers of defence behaviours in males may differ from those in females, particularly if there are sex-specific fitness benefits from the current brood or territory. In this study, we present field experiments aimed at elucidating sex differences in the drivers behind nest defence in a fish species (Variabilichromis moorii, Cichlidae) with biparental care. High rates of cuckoldry in this species create asymmetries in brood value between mates, suggesting that increased brood survival may be a weaker driver of male than of female defence effort. We conducted parent and offspring removal experiments and found that following the removal of their mates, single males lost significantly more fry tha...
BMC Evolutionary Biology
Background Raising unrelated offspring is typically wasteful of parental resources and so individ... more Background Raising unrelated offspring is typically wasteful of parental resources and so individuals are expected to reduce or maintain low levels of parental effort when their parentage is low. This can involve facultative, flexible adjustments of parental care to cues of lost parentage in the current brood, stabilizing selection for a low level of paternal investment, or an evolutionary reduction in parental investment in response to chronically low parentage. Results We studied parental care in Variabilichromis moorii, a socially monogamous, biparental cichlid fish, whose mating system is characterized by frequent cuckoldry and whose primary form of parental care is offspring defense. We combine field observations with genetic parentage analyses to show that while both parents defend their nest against intruding con- and hetero-specifics, males and females may do so for different reasons. Males in the study group (30 breeding pairs) sired 0–100% (median 83%) of the fry in their ...
by Ian Donohue, Franziska Schädelin, Kevin Schneider, Jacco van Rijssel, Romulus Abila, Diogo Antunes, Taylor Banda, Auguste Chocha Manda, Peter Akoll, Karoline Fritzsche, Hugo F. Gante, M Genner, Hiroki Hata, Joachim Frommen, Arne Jungwirth, Luc Janssens de Bisthoven, Prince Kaleme, Stephan Koblmüller, Anton Lamboj, Pascal Masilya, Loïc Kéver, Ad Konings, Gaspard Ntakimazi, W. Okello, Lobomir Pialek, Pierre Denis Plisnier, Jelena Rajkov, Joost A M Raeymaekers, Isa Schoen, Pooja Singh, George Turner, Alexandra Tyers, Alexandra A - T Weber, Holger Zimmermann, Ola Svensson, and Maarten Vanhove
Additional file 4: Table S4. Nest descriptions and observed defense behaviors.
Additional file 2: Table S2. Variation in within-male paternity shares. Paternity of breeding mal... more Additional file 2: Table S2. Variation in within-male paternity shares. Paternity of breeding males recaptured over three years of sampling was determined using nine microsatellite markers (Pmv17, Pzeb3, TmoM11, UNH2075, Hchi59, Hchi94, Ppun9, Ppun20, Ppun21; see main text), and is given in percent of maternal brood size.
Animal Behaviour, 2021
URL: htt In many animal systems, the defence of a territory or nest coincides with the defence of... more URL: htt In many animal systems, the defence of a territory or nest coincides with the defence of offspring, and it is often unclear whether the defence behaviour exists for the purpose of offspring protection, territory protection or a combination of both. In species with biparental care, the drivers of defence behaviours in males may differ from those in females, particularly if there are sex-specific fitness benefits from the current brood or territory. In this study, we present field experiments aimed at elucidating sex differences in the drivers behind nest defence in a fish species (Variabilichromis moorii, Cichlidae) with biparental care. High rates of cuckoldry in this species create asymmetries in brood value between mates, suggesting that increased brood survival may be a weaker driver of male than of female defence effort. We conducted parent and offspring removal experiments and found that following the removal of their mates, single males lost significantly more fry tha...
BMC Evolutionary Biology
Background Raising unrelated offspring is typically wasteful of parental resources and so individ... more Background Raising unrelated offspring is typically wasteful of parental resources and so individuals are expected to reduce or maintain low levels of parental effort when their parentage is low. This can involve facultative, flexible adjustments of parental care to cues of lost parentage in the current brood, stabilizing selection for a low level of paternal investment, or an evolutionary reduction in parental investment in response to chronically low parentage. Results We studied parental care in Variabilichromis moorii, a socially monogamous, biparental cichlid fish, whose mating system is characterized by frequent cuckoldry and whose primary form of parental care is offspring defense. We combine field observations with genetic parentage analyses to show that while both parents defend their nest against intruding con- and hetero-specifics, males and females may do so for different reasons. Males in the study group (30 breeding pairs) sired 0–100% (median 83%) of the fry in their ...
by Ian Donohue, Franziska Schädelin, Kevin Schneider, Jacco van Rijssel, Romulus Abila, Diogo Antunes, Taylor Banda, Auguste Chocha Manda, Peter Akoll, Karoline Fritzsche, Hugo F. Gante, M Genner, Hiroki Hata, Joachim Frommen, Arne Jungwirth, Luc Janssens de Bisthoven, Prince Kaleme, Stephan Koblmüller, Anton Lamboj, Pascal Masilya, Loïc Kéver, Ad Konings, Gaspard Ntakimazi, W. Okello, Lobomir Pialek, Pierre Denis Plisnier, Jelena Rajkov, Joost A M Raeymaekers, Isa Schoen, Pooja Singh, George Turner, Alexandra Tyers, Alexandra A - T Weber, Holger Zimmermann, Ola Svensson, and Maarten Vanhove