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2018 ; 5
(2
): 172024
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English Wikipedia
Social structure of the harem-forming promiscuous fruit bat, Cynopterus sphinx,
is the harem truly important?
#MMPMID29515899
Garg KM
; Chattopadhyay B
; Ramakrishnan U
R Soc Open Sci
2018[Feb]; 5
(2
): 172024
PMID29515899
show ga
Bats are social animals and display a diverse variety of mating and social
systems, with most species exhibiting some form of polygyny. Their social
organization is fluid and individuals frequently switch partners and roosting
sites. While harem-like social organization is observed in multiple tropical
species, its importance is contested in many of them. In this study, we
investigated the role of harems in the social organization of the old world fruit
bat Cynopterus sphinx. Based on regular behavioural observations over a period of
20 months and genetic data from microsatellite markers, we observed that the
social organization is flexible, individuals regularly shift between roosts and
the social organization resembles a fission-fusion society. Behavioural and
genetic analyses suggest that the harems are not strict units of social
structure, and the colony does not show signatures of subdivision with harems as
behavioural units. We also observed that there was no correlation between
individuals with high association index and pairwise relatedness. Our findings
indicate that similar to the mating system, the social organization of C. sphinx
can also be categorized as a fission-fusion society, and hence the term 'harem'
is a misnomer. We conclude that the social system of C. sphinx is flexible, with
multi-male multi-female organization, and individuals tend to be loyal to a given
area rather than a roost.