Composição de colônia e reprodução de Molossus rufus (E. Geoffroy) (Chiroptera, Molossidae) em um refúgio no sudeste do Brasil

Esbérard, Carlos Eduardo Lustosa

doi:10.1590/s0101-81752002000400021

Cited by 20 publications

(21 citation statements)

References 5 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Those refuges are, in most cases, provided with few openings or a single opening, which ends up being an advantage for snakes that enter them to capture bats. Refuges located in roofs may contain great aggregations of molossid bats, especially during the reproductive period (ESBÉRARD 2002) and it is probable that individual snakes may benefit from such an abundant prey source during a long time (i.e. repeatedly returning to the same refuge to feed on its residents).…”

mentioning

confidence: 99%

Snakes preying on bats: new records from Brazil and a review of recorded cases in the Neotropical Region

Esbérard

Vrcibradic

2007

Rev. Bras. Zool.

View full text Add to dashboard Cite

ABSTRACT. Predation on bats by snakes is relatively infrequently reported in the literature, though it may actually not be an uncommon phenomenon, since bat colonies represent a potential concentration of food for many medium-sized or large snakes. Herein we describe four events of bat predation by snakes and present a review of predation records of snakes on bats in the Neotropics compiled from the literature. A total of 20 species of snakes have been recorded so far as predators of bats in the New World tropics, with boiids being represented by the greatest number of cases. Due to the semi-arboreal habits of most of its species, their large size and their usual preference for mammalian prey, the Boiidae are probably the main reptilian predators of bats in the Neotropics, though predation by colubrids may also be relatively frequent. Two types of predatory events can be pointed out: (1) on active bats outside refuges or exiting them, and (2) on animals (active or inactive) inside refuges. The former strategy is apparently used mainly by boiids, whereas the latter strategy appears to be the one most used by large colubrids.

show abstract

mentioning

confidence: 99%

Snakes preying on bats: new records from Brazil and a review of recorded cases in the Neotropical Region

Esbérard

Vrcibradic

2007

Rev. Bras. Zool.

View full text Add to dashboard Cite

show abstract

“…Phyllostomus hastatus seems to be absent or in reduced number immediately after the breeding season that probably lasts from July to February in this latitude (see Santos et al, 2003). This period of lesser occupation in the roost coincides with the period that Molossus rufus (E. Geoffroy, 1840) was also absent in one of the roost analysed (see Esbérard, 2002). This species of bat seems to use frequently more than one roost as judged to the small number of recaptured animals observed in the returning samplings.…”

Section: Resultsmentioning

confidence: 83%

“…In (N = 8). In one roost located at Reserva Biológica Poço das Antas monthly samplings were performed from November 2000 to October 2001 [see Esbérard (2002) for details]. A roost located in a hollowed tree in Fazenda da Barra was sampled seven times between November 1998and February 2003[see Esbérard et al (2003, for details].…”

Section: Introductionmentioning

confidence: 99%

“…The animals were captured during daytime (usually from 10:00 AM to 12:00 PM) by hand or with adapted pinchers, by nylon entomologic nets or during the night in mist nets set on the access, inside these roosts or using a modified Davis trap functioning all night long (see Esbérard, 2002Esbérard, , 2003. Specimens captured had their sex their diurnal roosts couples, harems of over 100 females, groups of bachelor males and sole individuals may be found (McCraken and Bradbury, 1981;McCracken and Wilkinson, 2000;Esbérard, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Colony size, sex ratio and cohabitation in roosts of Phyllostomus hastatus (Pallas) (Chiroptera: Phyllostomidae)

et al. 2010

View full text Add to dashboard Cite

Phyllostomus hastatus bat is species broadly distributed over the Neotropical region, which uses as diurnal roosts caves, hollow trees, palm leaves and human buildings. Thirteen diurnal roosts of P. hastatus were analysed from 1990 to 2009 in several localities of Rio de Janeiro State, regarding environment (rural, urban or protected area), type of roost (hollow tree, basement or roof), sex ratio and cohabitation. A nocturnal roost was also analysed. Sex ratio of P. hastatus varied considerably among roosts what may be explained by the fact this species can roost alone, in couples, in harems or in groups of bachelor males. Phyllostomus hastatus was observed in cohabitation with three other species: Molossus rufus, Molossus molossus and Myotis nigricans. Due to the frequency of cohabitation observed between P. hastatus and species of the genus Molossus, one or more advantages for the members of this association may be expected. The simultaneous usage of a feeding roost by a group of bachelor males is unknown information in the literature, and may suggest that this kind of group may interact with each other even when away from their diurnal roosts.Keywords: diurnal roost, nocturnal roosts, Southeastern Brazil.Tamanho da colônia, proporção sexual e coabitação em refúgios de Phyllostomus hastatus (Pallas) (Chiroptera: Phyllostomidae) ResumoPhyllostomus hastatus é uma espécie de morcego amplamente distribuída na região Neotropical, que utiliza como abrigo diurno cavernas, ocos de árvores, folhas de palmeiras e construções humanas. Treze abrigos diurnos de P. hastatus foram analisados entre 1990 e 2009, em diferentes localidades do Estado do Rio de Janeiro, quanto ao ambiente (rural, urbano ou unidade de conservação), tipo de refúgio (oco de árvore, porão ou telhado), proporção sexual e coabitação. Um abrigo noturno também foi analisado. A proporção sexual de P. hastatus nos agrupamentos estudados variou consideravelmente entre os abrigos, e isto pode ser explicado pelo fato desta espécie refugiar-se isoladamente, em casais, como haréns e em grupos de machos solteiros. Phyllostomus hastatus foi observado em coabitação com Molossus rufus, M. molossus e Myotis nigricans. Dada a frequência de observação da coabitação entre P. hastatus e espécies do gênero Molossus, espera-se uma ou mais vantagens para os integrantes desta associação. O uso de abrigo noturno por um grupo de machos solteiros é fato ainda inédito e pode sugerir que machos solteiros possam estar interagindo mesmo fora de seus abrigos diurnos.Palavras-chave: abrigo diurno, abrigo noturno, Sudeste do Brasil.

show abstract

“…O telhado possuía 30 m 2 de área e o forro tinha no ponto máximo 0,70 m de altura (volume total estimado do refúgio -21 m 3 ). Os morcegos foram capturados ao sair, utilizando duas armadilhas do tipo Davis, adaptadas para tal fim, no período de novembro de 2000 a outubro de 2001 (Esbérard, 2002(Esbérard, , 2003. As armadilhas permaneceram abertas até duas horas antes do amanhecer, sendo então retiradas para permitir o retorno dos animais.…”

Section: Methodsunclassified

Variation in size of colony of Molossus molossus and Molossus rufus in Rio de Janeiro state, Southeastern Brazil

Esbérard

2011

Neotropical Biology and Conservation

View full text Add to dashboard Cite

Na região neotropical, o conhecimento da variação sazonal de colônias de morcegos é reduzido e se mostra fundamental para a escolha dos métodos para a estimativa do total de animais e para o manejo. Foram analisadas as variações mensais no tamanho de quatro colônias, duas de Molossus molossus e duas de Molossus rufus no estado do Rio de Janeiro, sudeste do Brasil. Um total de 60 noites de coleta foi realizado nas quatro colônias, totalizando 634 horas de trabalho. O número de animais que compunham cada colônia mostrou-se elevado, sendo de 293 e 474 em M. molossus e de 165 a 363 em M. rufus. As colônias podem ser de dois tipos, reprodutiva, quando se observa incremento no número de animais durante os meses de atividade reprodutiva, e não reprodutiva, quando o tamanho da colônia é maior em meses de inatividade reprodutiva da espécie nesta latitude e poucos morcegos permanecem no refúgio de outubro a fevereiro.

show abstract

Composição de colônia e reprodução de Molossus rufus (E. Geoffroy) (Chiroptera, Molossidae) em um refúgio no sudeste do Brasil

Cited by 20 publications

References 5 publications

Snakes preying on bats: new records from Brazil and a review of recorded cases in the Neotropical Region

Snakes preying on bats: new records from Brazil and a review of recorded cases in the Neotropical Region

Colony size, sex ratio and cohabitation in roosts of Phyllostomus hastatus (Pallas) (Chiroptera: Phyllostomidae)

Variation in size of colony of Molossus molossus and Molossus rufus in Rio de Janeiro state, Southeastern Brazil

Contact Info

Product

Resources

About