Transition of nonharem male to harem male status in the short-nosed fruit bat Cynopterus sphinx

Karuppudurai, T.; Kandula, Sripathi; Gopukumar, N.; Elangovan, Vadamalai; Arivarignan, G.

doi:10.1016/j.mambio.2007.02.006

Cited by 10 publications

(13 citation statements)

References 34 publications

(59 reference statements)

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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%

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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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Section: Relatedness Between Colony Individuals and Non-random Socialmentioning

confidence: 89%

“…Parturition occurs in February to March and again in June to July. Males can undergo transition between harem and non-harem status at varying frequency (Karuppudurai et al, 2008;Swami Doss personal communication). One or more harems along with few solitarily roosting non-harem males in close vicinity make up a colony.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2011

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“…The necklace was secured around the bat's neck, by crimping the sleeved copper ring with long-nose pliers. We have used this type of tagging for various studies and have observed no apparent detrimental effects on bats (Gopukumar et al 2003;Karuppudurai et al 2008). After marking, all individuals were released at the site of capture.…”

Section: Sampling Methods (Mist-netting)mentioning

confidence: 99%

<b>Foraging and roosting ecology of the Lesser Dog-faced Fruit Bat <I>Cynopterus brachyotis</I> (Mammalia: Chiroptera: Pteropodidae) in southern India</b>

Karuppudurai

Kandula

2018

J. Threat. Taxa

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The Lesser Dog-faced Fruit Bat Cynopterus brachyotis was found at higher elevations but since there is a paucity of reports on its distribution and habitat selection, an inventory was made at four locations in the Eastern and Western Ghats of southern India where the elevation ranged from 200–1,500 m. The C. brachyotis roosts were distributed between 600–1,500 m. Day roosts were found at an elevation of about 1,000m in Sirumalai and Yercaud Hill stations. Mist-netting studies, however, revealed that C. brachyotis was widely distributed at different elevations ranging from 600–1,500 m. Moreover, through a radio-telemetry study, we determined that the males foraged at shorter distances from the day roost, whereas the females commuted longer distances and used more than one foraging area. The male bats’ time of emergence is significantly less than females; in addition, males frequently return to their day-roost and made several short foraging flights spaced randomly throughout the night. These observations suggest that some type of territoriality is associated with their roost, which appears to be the basis of social organization in C. brachyotis. Overall, this study provides detailed information about the foraging and roosting ecology of C. brachyotis in southern India.

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“…Genetic data collected by Storz et al (2001a) over two seasons revealed twofold increase in male mating success contingent on a twofold increase in harem size, indicating high opportunity for sexual selection. However, detailed, long-term behavioural observations reveal that males maintain multiple tents (Paramanantha Swami Doss D. and Vinoth Kumar A. K. personal observation) and the so-called harem male and solitary male strategies ⁄ states also seem to be flexible within and across seasons (Karuppudurai et al 2008;Paramanantha Swami Doss D. personal observation). This suggests an absence of strict mating strategies among males.…”

Section: Introductionmentioning

confidence: 99%

Promiscuous mating in the harem‐roosting fruit bat,Cynopterus sphinx

et al. 2012

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Observations on mating behaviours and strategies guide our understanding of mating systems and variance in reproductive success. However, the presence of cryptic strategies often results in situations where social mating system is not reflective of genetic mating system. We present such a study of the genetic mating system of a harem‐forming bat Cynopterus sphinx where harems may not be true indicators of male reproductive success. This temporal study using data from six seasons on paternity reveals that social harem assemblages do not play a role in the mating system, and variance in male reproductive success is lower than expected assuming polygynous mating. Further, simulations reveal that the genetic mating system is statistically indistinguishable from promiscuity. Our results are in contrast to an earlier study that demonstrated high variance in male reproductive success. Although an outcome of behavioural mating patterns, standardized variance in male reproductive success (Im) affects the opportunity for sexual selection. To gain a better understanding of the evolutionary implications of promiscuity for mammals in general, we compared our estimates of Im and total opportunity for sexual selection (Im/If, where If is standardized variance in female reproductive success) with those of other known promiscuous species. We observed a broad range of Im/If values across known promiscuous species, indicating our poor understanding of the evolutionary implications of promiscuous mating.

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Transition of nonharem male to harem male status in the short-nosed fruit bat Cynopterus sphinx

Cited by 10 publications

References 34 publications

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

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

<b>Foraging and roosting ecology of the Lesser Dog-faced Fruit Bat <I>Cynopterus brachyotis</I> (Mammalia: Chiroptera: Pteropodidae) in southern India</b>

Promiscuous mating in the harem‐roosting fruit bat,Cynopterus sphinx

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