Social organization and kinship in the polygynous bat Phyllostomus hastatus

McCracken, Gary F.; Bradbury, Jack W.

doi:10.1007/bf00302840

Cited by 235 publications

(174 citation statements)

References 52 publications

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“…Although two birth peaks (April and October) have been reported for greater spear-nosed bat populations in Colombia and Venezuela, births outside late March to early May are rare on Trinidad and in Nicaragua and Panama (James, 1977;Wilson, 1979;McCracken & Bradbury, 1981). In addition to a relatively short birth season in Trinidad, McCracken & Bradbury (1981) found temporal clustering of births within caves. Furthermore, within each cave, the similarity among pup ages seemed to be greater within than across social groups.…”

Section: Introductionmentioning

confidence: 96%

“…Females form stable social groups of eight to 40 individuals who are not closely related (McCracken & Bradbury, 1981;McCracken, 1987). The females spend most of the day pressed against groupmates in the same solution depression in a cave ceiling, year after year, thereby affording considerable opportunity for the exchange of chemical or other social cues.…”

Section: Introductionmentioning

confidence: 99%

“…These authors suggested that birth clustering might be attributable in part to common seasonal cues from local environments. Members of each group forage in nearby or overlapping areas that are separate from those of other groups (McCracken & Bradbury, 1981;Wilkinson & Boughman, 1998). Some individuals within groups continue to use the same foraging areas in successive years (McCracken & Bradbury, 1981).…”

Section: Introductionmentioning

confidence: 99%

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Birth synchrony in greater spear‐nosed bats (Phyllostomus hastatus)

Porter

Wilkinson

2001

Journal of Zoology

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For many animals, strategies for optimally timing reproduction involve monitoring not only the physical environment, but also the social context. To explore the potential for social factors to modulate reproductive seasonality, the in¯uence of social and environmental cues on birth timing was examined in greater spear-nosed bats Phyllostomus hastatus. Births were observed or dated from pup growth curves in three caves on Trinidad, West Indies, over 4 years. Nearly 40% of the variability in birth dates could be explained by environmental factors because birth dates differed signi®cantly between years and showed consistent differences between locations that receive differing rainfall amounts. Nevertheless, the timing of births within caves and in captivity indicated that social cues also affect the timing and synchrony of births within female social groups. Within each cave, social groups differed signi®cantly in mean birth dates. Two groups of greater spear-nosed bats brought into captivity and maintained without seasonal cues initially exhibited less birth synchrony than wild groups, but birth synchrony did not decline over 3 subsequent years. Further evidence for the in¯uence of social cues on reproductive timing came from four females that were transferred between the captive groups and then gave birth in synchrony with their new group and out of schedule with their original group. Social cues in¯uencing reproductive timing are unlikely to be volatile chemicals or other passively transferred cues, given that frequent prolonged physical contact did not increase birth synchrony between adjacent wild groups. Cues are more probably transferred actively between female group members, perhaps by grooming, or through mating with one attendant male.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Birth synchrony in greater spear‐nosed bats (Phyllostomus hastatus)

Porter

Wilkinson

2001

Journal of Zoology

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“…Since roosts may have different sex ratios (MCCRAKEN;BRADBURY, 1981;COSTA et al, 2010), different prevalence and intensity values may be observed, as in the present study. Constant roost changes may also be responsible for re-infestation and dispersal of ectoparasites within the bat population.…”

Section: Discussionmentioning

confidence: 57%

“…Females of P. hastatus have broader interspecific interactions and higher roost fidelity (MCCRAKEN;BRADBURY, 1981). Harems are stable, with females living together for consecutive years, whereas long cohesion has not been observed in bachelor groups.…”

Section: Discussionmentioning

confidence: 99%

Trichobius longipes (Diptera, Streblidae) as a parasite of Phyllostomus hastatus(Chiroptera, Phyllostomidae)

Esbérard

Biavatti

Carvalho

et al. 2014

Rev. Bras. Parasitol. Vet.

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Trichobius longipes (Diptera, Streblidae) as a parasite ofPhyllostomus hastatus (Chiroptera, Phyllostomidae) AbstractAmong the factors that influence the diversity of ectoparasites on bat hosts are the kind of roost and the host's social behavior. Other factors such as sex, reproductive condition and host size may influence the distribution and abundance of ectoparasites. The aim of the present study was to analyze the variation in Streblidae ectoparasites on the bat Phyllostomus hastatus, according to sex and roost type. We caught bats in four houses on Marambaia Island, municipality of Mangaratiba, and in one house at the Federal Rural University of Rio de Janeiro, municipality of Seropédica. We caught 65 females and 50 males of P. hastatus and 664 streblids of four species: Aspidoptera phyllostomatis, Strebla consocia, Trichobius "dugesii" complex and Trichobius longipes. The species T. longipes accounted for more than 99% of all the ectoparasites caught. Female bats were more parasitized than males, in terms of both prevalence and average intensity. The total number of parasites did not vary between resident and non-resident bats. The relationship between the number of individuals of T. longipes and sex and roost type was significant for resident bats. The total number of parasites on males did not differ between bachelor roosts and mixed-sex roosts. The differences found between roosts reflected the differences between the sexes.

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Male‐biased dispersal and the potential impact of human‐induced habitat modifications on the Neotropical batTrachops cirrhosus

Halczok

Brändel

Flores

et al. 2018

Ecology and Evolution

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Gene flow, maintained through natal dispersal and subsequent mating events, is one of the most important processes in both ecology and population genetics. Among mammalian populations, gene flow is strongly affected by a variety of factors, including the species’ ability to disperse, and the composition of the environment which can limit dispersal. Information on dispersal patterns is thus crucial both for conservation management and for understanding the social system of a species. We used 16 polymorphic nuclear microsatellite loci in addition to mitochondrial DNA sequences (1.61 kbp) to analyse the population structure and the sex‐specific pattern of natal dispersal in the frog‐eating fringe‐lipped bat, Trachops cirrhosus, in Central Panama. Our study revealed that—unlike most of the few other investigated Neotropical bats—gene flow in this species is mostly male‐mediated. Nevertheless, distinct genetic clusters occur in both sexes. In particular, the presence of genetic differentiation in the dataset only consisting of the dispersing sex (males) indicates that gene flow is impeded within our study area. Our data are in line with the Panama Canal in connection with the widening of the Río Chagres during the canal construction acting as a recent barrier to gene flow. The sensitivity of T. cirrhosus to human‐induced habitat modifications is further indicated by an extremely low capture success in highly fragmented areas. Taken together, our genetic and capture data provide evidence for this species to be classified as less mobile and thus vulnerable to habitat change, information that is important for conservation management.

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Social organization and kinship in the polygynous bat Phyllostomus hastatus

Cited by 235 publications

References 52 publications

Birth synchrony in greater spear‐nosed bats (Phyllostomus hastatus)

Birth synchrony in greater spear‐nosed bats (Phyllostomus hastatus)

Trichobius longipes (Diptera, Streblidae) as a parasite of Phyllostomus hastatus(Chiroptera, Phyllostomidae)

Male‐biased dispersal and the potential impact of human‐induced habitat modifications on the Neotropical batTrachops cirrhosus

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