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

Chattopadhyay, Balaji; Garg, Kritika M.; Doss, Paramanantha Swami; Ramakrishnan, Uma; Kandula, Sripathi

doi:10.1016/j.mambio.2010.08.003

Cited by 12 publications

(18 citation statements)

References 35 publications

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“…One clear pattern emerges though, wherein colony males, regardless of the strategies employed, are always more successful than extra-colony males, suggesting that the colony is an important social and mating unit. This is in agreement with Chattopadhyay et al (2011) who reported that harems are not genetically subdivided and might just be social units that do not drive genetic mating systems in this species. Moreover, turnover rates across seasons were lower for males than females (Table S2, supporting information) indicating the importance of colonies for male reproductive success.…”

Section: Harem Size Is Not a Predictor Of Variance In Male Reproductisupporting

confidence: 93%

“…Ten microsatellites were used for genetic analyses (Storz 2000). A 10 lL reaction was set for each sample, and PCR conditions followed methods detailed in Chattopadhyay et al (2011). Three microlitre of PCR products was visualized on a 2% agarose gel.…”

Section: Microsatellite Genotypingmentioning

confidence: 99%

“…The proportion of related individuals was considered to vary between 1% and 5%. Only the half-sibs category of relatedness was considered as previous studies had reported total natal dispersal (Storz et al 2001a) and half sib relationship between a small proportion of haem male and harem females (Chattopadhyay et al 2011). Paternity assignments were then compared to the null in which candidate parents were considered to be unrelated.…”

Section: Parentage Assessmentmentioning

confidence: 99%

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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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Section: Harem Size Is Not a Predictor Of Variance In Male Reproductisupporting

confidence: 93%

Section: Microsatellite Genotypingmentioning

confidence: 99%

Section: Parentage Assessmentmentioning

confidence: 99%

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

et al. 2012

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“…Further, the genetic divergence between these two tribes (Epomophorini and Myonycterini) was 15% in the studied dataset. The previous study recommended that the species under these tribes share a common ancestor and formed distinct 'Epomophorini-Myonycterini Lineage' (Almeida et al 2011, Chattopadhyay et al 2011. The Epomophorini-Myonycterini lineage maintained 18.2% genetic distance with other Pteropodidae species.…”

Section: Resultsmentioning

confidence: 97%

Mitochondrial DNA identified bat species in northeast India: electrocution mortality and biodiversity loss

Kundu

Kumar

Tyagi

et al. 2019

Mitochondrial DNA Part B

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Northeast India with two biodiversity hotspots is recognized as a biodiversity-rich region. However, several extant animals including chiropterans are currently at jeopardy due to habitat loss, electrocution mortality, and other anthropogenic threats. This study examines the efficacy of mitochondrial Cytochrome b (mtCytb) sequences for species-level identification of five electrocuted bat specimens from Manipur state. The similarity search results in the global database, Kimura 2 parameter (K2P) genetic distances, and neighbor-joining (NJ) tree identified all bat specimens into two species, Cynopterus sphinx and Megaerops niphanae. The detection of M. niphanae is the first record of this mammal from the state. In comparison with other Pteropodidae species, the genetic distances clearly discriminate both C. sphinx (7.9-30.2%) and M. niphanae (12.2-25.7%). In addition, the combined tree analysis of present and earlier genetic information of C. sphinx suggested the presence of cryptic lineages and sympatric population in India. This similar approach with more sampling from a wide distribution area could assist the future genetics research on chiropterans and their precise conservation.

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“…We attempted to provide the best conditions in captivity to minimize disruptions to their natural behaviour. A bamboo basket hanging at the roof of the flight room served as the tent, and a single basket per male because females rarely roost alone in the wild (Chattopadhyay et al, 2011). An automated timer was used to maintain a 12:12 h light-dark cycle.…”

Section: Temporal Grooming Patterns: Observations In Captivitymentioning

confidence: 99%

Social grooming among Indian short-nosed fruit bats

Rathinakumar

Cantor

Senthilkumar

et al. 2017

Behav

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Social grooming is conspicuous in group-living mammals. Bats are gregarious and may groom each other, but the motivation for such social behaviour remains unclear. Here, we describe patterns and infer function of social grooming in tent-making Indian short-nosed fruit bats. Combining field and captivity observations, we found that males and their harem of females mutually groom and apply bodily secretions to one another in tight clusters. Mutual grooming is more commonly initiated by females, before emergence flight at dusk, and during the non-mating season. The within-harem association pattern suggests males may recognize female reproductive status via social grooming. Chemical analysis of the secretions applied during grooming revealed volatile organic compounds that may be involved in chemosensory-mediated communication and/or mate choice. These fruit bat harems were previously seen as simple aggregations, with limited interactions among individuals. Our findings suggest social grooming is multi-functional, with potential implications for the bats’ social lives.

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

Cited by 12 publications

References 35 publications

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

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

Mitochondrial DNA identified bat species in northeast India: electrocution mortality and biodiversity loss

Social grooming among Indian short-nosed fruit bats

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