Capture sequence and relative abundance of bats during surveys

Esbérard, Carlos Eduardo Lustosa

doi:10.1590/s1984-46702009000100016

Cited by 17 publications

(16 citation statements)

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“…On Ilha Grande, in the municipality of Angra dos Reis, there is a list with over 3,000 captures and 36 bat species captured during seven years of sampling work . In Rio das Pedras Reserve, Mangaratiba municipality, 26 bat species were listed after 1,287 captures (Esbérard and Bergallo, 2008a;Esbérard, 2009). On Ilha da Gipóia, Angra dos Reis municipality, 27 species were recorded after 1,776 captures (Esbérard, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…In Rio das Pedras Reserve, Mangaratiba municipality, 26 bat species were listed after 1,287 captures (Esbérard and Bergallo, 2008a;Esbérard, 2009). On Ilha da Gipóia, Angra dos Reis municipality, 27 species were recorded after 1,776 captures (Esbérard, 2009). On Ilha da Marambaia, Enseada de Sepetiba (Marambaia Island, Sepetiba Creek), there is a previous list with 16 bat species, carried out between 1991 and 1998 (Costa and Peracchi, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Bat diversity of Ilha da Marambaia, Southern Rio de Janeiro State, Brazil (Chiroptera, Mammalia)

et al. 2010

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Few sites have been well sampled for bats, and samplings in islands are even scarcer. Therefore, the objectives of the present study were: (1) to list the bat species of Ilha da Marambaia; (2) to compare richness, abundance and biomass of bat guilds found there; (3) to analyse abundance patterns of bat species; and (4) to compare richness, abundance and composition of the bat fauna among different kinds of environment. To capture bats we used mist nets set in five different environments, totalising 3559.2 net-hours, during 37 nights between October 2006 and August 2008. A total of 1,133 captures were accomplished, comprising 34 species from five families. The most abundant species was Molossus molossus. Frugivorous bats exhibited higher richness, abundance and biomass if compared to other guilds. Most species (N = 22) exhibited abundances between 1 to 10% of all captures. Sixteen species were restricted to just one of the environments sampled. The high richness may be attributed to sampling carried out in several environments, and to the capture of insectivorous species over water bodies.Keywords: abundance, captures, sampling effort, survey methods. Diversidade de morcegos da Ilha da Marambaia, Sul do Rio de Janeiro, Brasil (Chiroptera, Mammalia) ResumoPoucos são os locais satisfatoriamente amostrados para morcegos e menos ainda as ilhas. Os objetivos deste estudo foram listar as espécies de morcegos da Ilha da Marambaia, comparar a riqueza, abundância e biomassa das guildas de morcegos encontradas, analisar o padrão de abundância das espécies de morcegos e comparar a riqueza, abundância e composição entre os diferentes ambientes amostrados. O método de amostragem consistiu do uso de redes de neblina armadas em cinco ambientes diferentes, totalizando 3559,2 redes-hora, em 37 noites entre outubro de 2006 e agosto de 2008. Foram obtidas 1.133 capturas, compreendendo 34 espécies de cinco famílias. A espécie mais abundante foi Molossus molossus. Os frugívoros apresentaram maior riqueza, abundância e biomassa. A maior parte das espécies (N = 22) apresentou abundâncias entre 1 e 10% do total de capturas. Dezesseis espécies foram restritas a apenas um dos ambientes amostrados. A elevada riqueza encontrada pode ser atribuída à realização de coletas em vários ambientes, e a captura de espécies insetívoras sobre a água.Palavras-chave: abundância, capturas, esforço amostral, métodos de amostragem.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bat diversity of Ilha da Marambaia, Southern Rio de Janeiro State, Brazil (Chiroptera, Mammalia)

et al. 2010

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“…In surveys with continuous sampling effort, Esbérard (2006Esbérard ( , 2009) detected a declining trend on capture rates during consecutive sampling nights, and a negative trend on capture rates for common species with continuous effort, suggesting that bats might learn the position of the mist-nets and avoid them. Our results suggest that bats did not learn the position of the mist-nets, as the capture rates only slightly change over the three nights sampled each month.…”

Section: Discussionmentioning

confidence: 99%

Bats of Alagoa Grande, a semi-arid area of Northeastern Brazil

Zeppelini

Beltrão

Feijó

et al. 2017

Neotropical Biology and Conservation

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“…For each month and for each (females, males, juveniles, gravid females and so on) we used capture rate, expressed as total of captures divided by the total of h*m 2 of nets (Straube and Bianconi, 2002), but to increase the visualization and use only three decimal places, we multiplied the values by 10 3 (Esbérard, 2009). To estimate the beginning of the reproductive season in each year, we considered only the years that had a number of captures equal or larger than ten pregnant females.…”

Section: Methodsmentioning

confidence: 99%

Reproductive biology of the bat Sturnira lilium (Chiroptera, Phyllostomidae) in the Atlantic Forest of Rio de Janeiro, southeastern Brazil

2014

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Bats can be monoestrous or polyestrous, and seasonal or non-seasonal in their reproductive patterns. The strategy adopted by each species or population depends on the regional climate. The objective this study was to analyze reproductive data of Sturnira lilium from long-term sampling carried out in several sites in Rio de Janeiro states, southeastern Brazil. We carried out sampling in 42 sites (with altitudes ranging from sea level to 1300 m a.s.l.) from May 1989 to December 2011. In total, we obtained 2602 captures of S. lilium: 1242 captures of adult females, 1225 captures of adult males, and 136 captures of subadults. The sex ratio was 0.99 males: 1 female. The reproductive season varied from eight to twelve months a year, and it was not related to the total accumulated rainfall. Sturnira lilium have continuously polyestrous reproduction with postpartum estrus and pregnant females can be observed in all months except July. In the present study, the highest proportions of pregnant females were observed in the months with the highest rainfall.Keywords: seasonality, reproductive season, rain influence, Atlantic Forest, Rio de Janeiro. Biologia reprodutiva do morcego Sturnira lilium (Chiroptera, Phyllostomidae), na Floresta Atlântica do Rio de Janeiro, sudeste do Brasil ResumoOs morcegos podem ser monoestrais ou poliestrais e sazonais ou assazonais em relação aos padrões reprodutivos. A estratégia adotada por cada espécie ou população depende do clima regional. O objetivo deste estudo foi analisar os dados reprodutivos de Sturnira lilium em amostragem de longo prazo realizado em diversos locais do Estado do Rio de Janeiro, sudeste do Brasil. De maio de 1989 a dezembro de 2011, realizamos amostragens em 42 locais (com altitudes que variam de 0 a 1300 m de altitude). No total, obteve 2602 capturas de S. lilium: 1242 fêmeas adultas, 1225 machos adultos e 136 subadultos. A proporção sexual foi 0.99 machos: 1 fêmea. A temporada reprodutiva variou de oito a doze meses por ano e não foi relacionada com o total de precipitação acumulada. Sturnira lilium apresenta reprodução contínua poliéstrica com estro pós-parto e fêmeas grávidas podem ser observadas em todos os meses, exceto o mês de julho. No presente estudo, as maiores proporções de fêmeas grávidas ocorreram nos meses com maior precipitação.Palavras-chave: estacionalidade, época reprodutiva, influência da chuva, Mata Atlântica, Rio de Janeiro.

show abstract

Capture sequence and relative abundance of bats during surveys

Cited by 17 publications

References 22 publications

Bat diversity of Ilha da Marambaia, Southern Rio de Janeiro State, Brazil (Chiroptera, Mammalia)

Bat diversity of Ilha da Marambaia, Southern Rio de Janeiro State, Brazil (Chiroptera, Mammalia)

Bats of Alagoa Grande, a semi-arid area of Northeastern Brazil

Reproductive biology of the bat Sturnira lilium (Chiroptera, Phyllostomidae) in the Atlantic Forest of Rio de Janeiro, southeastern Brazil

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