10.5061/DRYAD.9F392S7R
Sefc, Kristina M.
University of Graz
Hermann, Caroline M.
University of Graz
Taborsky, Barbara
University of Bern
Koblmüller, Stephan
University of Graz
Data from: Brood mixing and reduced polyandry in a maternally
mouthbrooding cichlid with elevated among-breeder relatedness
Dryad
dataset
2012
Simochromis pleurospilus
relatedness
Parentage
Animal Mating/Breeding Systems
conspecific brood parasitism
Inclusive fitness
2012-03-05T19:28:24Z
2012-03-05T19:28:24Z
en
https://doi.org/10.1111/j.1365-294X.2012.05573.x
60926 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Uniparental maternal brood care often coincides with multiple paternity
and single maternity of broods, possibly reflecting benefits of polyandry
and costs of uniparental care. Genetic data from the maternally
mouthbrooding cichlid fish Simochromis pleurospilus revealed the opposite
pattern – low polyandry and allomaternal care. More than 70% of the
investigated females had mated with a single male, and 14% of the females
had unrelated fry in their broods. Broods with foreign fry were in the
late stage of brood care, in which females guard free-swimming fry and
recall the broods into their mouths for protection. With one exception,
fostering females were related to their adopted fry at the level of first
cousins (RQG>0.12), but relatedness between fosters and adopted fry
was not significantly higher than between fosters and fry tended by other
females. Relatedness among breeders extended to the level of first-order
relatives. Mean relatedness among contemporaneously breeding dams
(RQG=0.08) was significantly higher than among dams breeding in different
seasons (RQG=-0.04), which suggests a temporal or spatial concentration of
mouthbrooding relatives. Indeed, females sometimes brood in small groups.
This behavior may reduce brood predation but will increase the risk of
brood mixing, which is possibly mitigated by low costs of brood care and
indirect benefits accrued by relatedness among the breeders in the group.
Remarkably, the apparent inbreeding potential did not give rise to
bet-hedging polyandry or active avoidance of relatives, as half of the
mated individuals were related at RQG>0.13 and polyandry did not
coincide with high within-pair relatedness.
Simochromis pleurospilus microsatellite genotypessee ReadMe file
Africa
Lake Tanganyika