<i>Pteronotus gymnonotus</i>(Chiroptera: Mormoopidae)

Pavan, Ana Carolina; Tavares, Valéria da Cunha

doi:10.1093/mspecies/seaa003

Cited by 16 publications

(13 citation statements)

References 52 publications

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“…Pteronotus gymnonotus is a relatively mobile species (Pavan and Tavares, 2019), with the broadest latitudinal range among mormoopid bats, and is found in several different habitats (Pavan and Tavares, 2019). The wide distribution range could contribute to the genetic population structure (Burland and Wilmer, 2001), as an array of factors can affect the extent of genetic partitioning among populations, including dispersal ability and geographic barriers (Burland and Wilmer, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…In a scenario of strong anthropogenic impacts, maintaining gene flow between bat populations in these bat caves is essential, as studies indicate losses in species and genetic diversity of bat assemblages and populations from fragmented habitats compared to those occurring in continuous habitats (Meyer et al, 2009;Struebig et al, 2011;Ripperger et al, 2013;Lino et al, 2019Lino et al, , 2021. These bat caves are essential for the preservation of Pteronotus bats, as the species of this genus are mostly cave-dwelling (de la Torre and Medellín, 2010;Pavan and Tavares, 2019) and the large colonies they form are essential to control both environmental and body temperature, being a very specialized expression of eco-evolutionary adaptation (de la Torre and Medellín, 2010).…”

Section: Conservation Implicationsmentioning

confidence: 99%

“…In Brazil, large colonies found in bat caves are predominantly made up of Pteronotus gymnonotus (e.g., Rocha et al, 2011;Vargas-Mena et al, 2018;Otálora-Ardila et al, 2019), an insectivorous and strictly cave-dwelling species from the Mormoopidae family (de la Torre and Medellín, 2010;Pavan and Tavares, 2019). Systematic monitoring of some of these caves indicates that while some of them appear to maintain resident populations throughout the year, in others, populations may experience large fluctuations in short periods of time (Otálora-Ardila et al, 2019;Leal and Bernard, 2021).…”

Section: Introductionmentioning

confidence: 99%

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High genetic connectivity among large populations of Pteronotus gymnonotus in bat caves in Brazil and its implications for conservation

et al. 2022

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Bat caves in the Neotropical region harbor exceptional bat populations (> 100,000 individuals). These populations play a wider role in ecological interactions, are vulnerable due to their restriction to caves, and have a disproportionate conservation value. Current knowledge of bat caves in Brazil is still small. However, systematic monitoring of some bat caves in northeastern Brazil shows that they experience strong population fluctuations over short periods of time, suggesting large-scale movements between roosts and a much broader use of the landscape than previously considered. Spatio-temporal reproductive connectivity between distant populations would change our understanding of the use of roosts among bat species in Brazil, and important gaps in knowledge of long-distance bat movements in the country would be filled. Here, we used ddRADseq data to analyze the genetic structure of Pteronotus gymnonotus across nine bat caves over 700 km. Our results indicate the lack of a clear geographic structure with gene flow among all the caves analyzed, suggesting that P. gymnonotus uses a network of bat caves geographically segregated hundreds of kilometers apart. Facing strong anthropogenic impacts and an underrepresentation of caves in conservation action plans worldwide, the genetic connectivity demonstrated here confirms that bat caves are priority sites for bat and speleological conservation in Brazil and elsewhere. Moreover, our results demonstrate a warning call: the applied aspects of the environmental licensing process of the mining sector and its impact must be reviewed, not only in Brazil, but wherever this licensing process affects caves having exceptional bat populations.

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Section: Discussionmentioning

confidence: 99%

Section: Conservation Implicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High genetic connectivity among large populations of Pteronotus gymnonotus in bat caves in Brazil and its implications for conservation

et al. 2022

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“…The bat carcass was identified as P. gymnonotus, based on the striking external features, such as the wing membranes being fixed on the midline of the dorsum of its body and its large size compared to other naked-backed Pteronotus (Pavan & Tavares, 2020). Pteronotus gymnonotus is distributed across most of the Neotropical mainland, ranging from southeastern Mexico through Central and South America to north-eastern Bolivia and central Brazil (Pavan & Tavares, 2020). Adults typically weigh 12 to 18 g and are insectivorous.…”

Section: Methodsmentioning

confidence: 99%

Life post-death: Colonization of a bat carcass by Microcerella halli (Engel, 1931) (Diptera: Sarcophagidae) in a Neotropical cave

2022

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Caves are habitats characterized by low light or total darkness, whose fauna is largely composed of animals that adapt to dark environments, such as bats and many arthropods. Here, we present the first record of bat carcass colonization by Diptera larvae in a cave in the Neotropics. Twenty-one adult specimens of Microcerella halli (Sarcophagidae), seven males and 14 females, emerged from larvae collected in a carcass of Pteronotus gymnonotus (Mormoopidae) found in a twilight zone, about 15 m from the cave entrance. The mean time between carcass collection and adult emergence was 17.99 ± 0.44 days. As colonization by M. halli only occurs after death, we estimated the mean duration of the pupal stage – by recording daily pupation and emergence data – and attempted a preliminary estimate of the post-mortem interval, which indicated that larviposition occurred at least 24 h before carcass collection. Furthermore, we discussed the fact that M. halli females can find and colonize carcasses in low light environments, reinforcing the forensic potential of the species.

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“…Insectivorous bats, for example, are important as insect controllers. It is estimated that some species can eat amounts equivalent to one and a half times their weight in one night (Pavan; Tavares, 2020). Many of these insects are harmful to agriculture and can transmit diseases such as dengue (Nowak, 1999).…”

Section: Order Chiropteramentioning

confidence: 99%

Morphology of the Ovaries, Uterine Tubes and Uterus ofPteronotus gymnonotus(Chiroptera: Mormoopidae)

Costa

Morais

2022

Preprint

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The present study aimed to characterize the ovarian, tubal and uterine morphology in the insectivorous bat Pteronotus gymnonotus , in specimens collected in the state of Rio Grande do Norte, Brazil. After euthanasia, these organs were histologically processed for inclusion in historesin for morphological and morphometric analysis under light microscopy. The morphological characterization of the ovaries was based on the development of the oocyte and follicle growth, while the uterine tubes were characterized in terms of their anatomy and division of their parts into: infundibulum, ampulla and isthmus, where the height of the tubal epithelium and muscle layer thickness. The analysis of the uterus was based on the formation and thickness of its three layers: endometrium, myometrium and perimetrium. Morphometric analyzes were performed by capturing images of histological slides at different magnifications. The variables were submitted to descriptive analysis, with data expressed as mean and standard deviation. It was observed that the ovaries are bilateral and oval, presenting a squamous to simple cubic epithelium, forming the germinal epithelium, certain stratification regarding the location of the ovarian follicles, where most of the primordial follicles are arranged in the peripheral region of the ovary, however being it is possible to identify many follicles in various stages of maturation in the central region ; the uterus is bicornuate and the layers of the uterus and uterine tubes observed follow the same pattern of other eutherian mammals. This information is important to allow comparisons between species, aiming at knowledge about reproductive morphology in mammals, especially those belonging to the order Chiroptera. Therefore, this research is essential to subsidize conservation measures that protect their natural populations, in an effort to maintain the ecological balance. Keywords: Insectivore bats, Reproductive biology, Ovarian morphometry, Oogenesis.

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Pteronotus gymnonotus(Chiroptera: Mormoopidae)

Cited by 16 publications

References 52 publications

High genetic connectivity among large populations of Pteronotus gymnonotus in bat caves in Brazil and its implications for conservation

High genetic connectivity among large populations of Pteronotus gymnonotus in bat caves in Brazil and its implications for conservation

Life post-death: Colonization of a bat carcass by Microcerella halli (Engel, 1931) (Diptera: Sarcophagidae) in a Neotropical cave

Morphology of the Ovaries, Uterine Tubes and Uterus ofPteronotus gymnonotus(Chiroptera: Mormoopidae)

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