The Relationship between Roosting Ecology and Degree of Polygyny in Harem-Forming Bats: Perspectives from<i>Cynopterus</i>

Campbell, Polly

doi:10.1644/08-mamm-s-059.1

Cited by 27 publications

(31 citation statements)

References 63 publications

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“…Groups that were fortunate enough to possess territories with large Ficus sleeping trees were more likely to be polygynous than were groups on territories with a smaller sleeping tree or a nonFicus sleeping tree. This is comparable to studies of the lesser short-nosed fruit bat and the greater short-nosed fruit bat, for which variation in the quality and quantity of roosts plays an important role in determining the environmental potential for male polygyny (Campbell 2008).…”

Section: Discussionsupporting

confidence: 79%

“…Specifically, under what ecological circumstances can we ascertain a shift from or toward monogamy or polygyny, within a single species? For example, studies of Cynopterus brachyotis (the lesser short-nosed fruit bat) and Cynopterus sphinx (greater short nosed fruit-bat) suggest that variation in the quality and quantity of roosts plays an important role in determining the environmental potential for male polygyny (Campbell 2008). Similarly in prairie dogs, the mating system varies based on territory size as well as on the density of available food (Verdolin 2007).…”

Section: Introductionmentioning

confidence: 99%

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Intraspecific Variation in the Mating System of Spectral Tarsiers

Gursky

2010

Int J Primatol

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Historically, a species' social system was perceived to be a fixed attribute and deviations were usually treated as aberrant or maladaptive. Over the last few decades, socioecologists have started to recognize that variation in social systems is normal and adaptive. Here I explore how ecological variation affects the mating system of a nocturnal primate, the spectral tarsier, Tarsius spectrum. Several studies of the spectral tarsier have illustrated variation in this species' mating system. Although most groups exhibit a monogamous mating system, a small proportion of the population consistently exhibits a polygynous mating system. I conducted this study at Tangkoko Nature Reserve in Sulawesi, Indonesia during 2007. I found that group size was highly variable, ranging from 2 individuals to as many as 8 individuals per sleeping site. Although most groups (21 of 26) were composed of a single adult male and a single adult female, ca. 19% of the groups contained 2 adult females. Three of the 5 groups with 2 adult females contained 2 young infants. As might be expected, polygynous groups were larger than were monogamous groups. The mean group size of monogamous groups was 2.9, whereas the mean group size of polygynous groups was 6.0. Polygynous groups were also more likely to use Ficus caulocarpa trees than were the monogamous groups. Polygynous groups consistently used more sleeping sites as well as larger diameter sleeping trees, than did monogamous groups. The large-diameter fig trees are ideal homes for the spectral tarsiers in that they offer multiple entrances and exits as well as protection from the elements. Polygynous and monogamous groups exhibited no differences in insect biomass available, home range size, or height of sleeping tree. These results support the hypothesis that ecological variation is an important determinant of mating system within spectral tarsiers.

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Section: Discussionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Intraspecific Variation in the Mating System of Spectral Tarsiers

Gursky

2010

Int J Primatol

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“…Harem groups are relatively unstable in C. sphinx. Thus such association can be explained as an extension of male-female association, as these non-harem males are known to achieve harem status as well (Karuppudurai et al, 2008;Storz et al, 2000), and such an event could have a consequence on the overall relatedness in the harem and the colony and might as well be a reflection of possible cryptic mate choice, a possibility already suggested by Campbell (2008).…”

Section: Relatedness Between Colony Individuals and Non-random Socialmentioning

confidence: 89%

“…Adult female members frequently move between harems as well as colonies. To some extent, both males and females remain loyal to a particular colony but switch roosts within the same colony Campbell, 2008). Harem females may maintain long-term associations as roostmates but long-term mate bonds between males and females are unlikely .…”

Section: Introductionmentioning

confidence: 99%

Molecular genetic perspective of group-living in a polygynous fruit bat, Cynopterus sphinx

et al. 2011

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a b s t r a c tIn this study, we investigated the genetic social structure of a polygynous fruit bat, Cynopterus sphinx. We tested whether colonies of C. sphinx are substructured and if genetic relatedness among group members is non-random. Although we did not find statistical evidence of genetic structuring of harems within a colony, significant levels of inbreeding within colonies and social associations between related individuals were observed. The average pairwise relatedness was higher for females within a harem (average: 0.02) than within the colony (average: −0.03) (p < 0.005). In most harems, the harem male was highly related to one harem female (with an average relatedness of 0.2). Further, statistical resampling suggested that this association is non-random, potentially suggesting mate selection. Although the average relatedness among males in colonies was zero, the range of relatedness (−0.43 to 0.49) was high. We conclude that colonies, to some extent are inbred units, comprising of both related and unrelated individuals, and that social associations might be kin based.

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“…It has been suggested that males tend to be larger than females in bat species under stronger sexual selection, or in which investing in harem defense is needed to maintain a polygynous mating system (Dechmann et al 2005;Campbell 2008). …”

Section: Discussionmentioning

confidence: 99%

A new polytypic species of yellow-shouldered bats, genus Sturnira (Mammalia: Chiroptera: Phyllostomidae), from the Andean and coastal mountain systems of Venezuela and Colombia

Molinari¹,

Bustos²,

Burneo³

et al. 2017

Zootaxa

546

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Sturnira is the most speciose genus of New World leaf-nosed bats (Phyllostomidae). We name Sturnira adrianae, new species. This taxon is born polytypic, divided into a larger subspecies (S. a. adrianae) widespread in the mountains of northern and western Venezuela, and northern Colombia, and a smaller subspecies (S. a. caripana) endemic to the mountains of northeastern Venezuela. The new species inhabits evergreen, deciduous, and cloud forests at mainly medium (1000–2000 m) elevations. It has long been confused with S. ludovici, but it is more closely related to S. oporaphilum. It can be distinguished from other species of Sturnira by genetic data, and based on discrete and continuously varying characters. Within the genus, the new species belongs to a clade that also includes S. oporaphilum, S. ludovici, S. hondurensis, and S. burtonlimi. The larger new subspecies is the largest member of this clade. The two new subspecies are the most sexually dimorphic members of this clade. The smaller new subspecies is restricted to small mountain systems undergoing severe deforestation processes, therefore can be assigned to the Vulnerable (VU) conservation category of the International Union for Conservation of Nature (IUCN).

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The Relationship between Roosting Ecology and Degree of Polygyny in Harem-Forming Bats: Perspectives fromCynopterus

Cited by 27 publications

References 63 publications

Intraspecific Variation in the Mating System of Spectral Tarsiers

Intraspecific Variation in the Mating System of Spectral Tarsiers

Molecular genetic perspective of group-living in a polygynous fruit bat, Cynopterus sphinx

A new polytypic species of yellow-shouldered bats, genus Sturnira (Mammalia: Chiroptera: Phyllostomidae), from the Andean and coastal mountain systems of Venezuela and Colombia

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