First record of the bat Mimon crenulatum (E. Geoffroy, 1801) (Mammalia: Chiroptera) in the state of Rio de Janeiro, Southeastern Brazil

Abstract

The present study reports an extension of the geographic range of the phyllostomid bat Mimon crenulatum. This is the first record of this species in the state of Rio de Janeiro, Southeastern Brazil. Bats were captured in two conservation units of the Atlantic Forest. Data on the ecology and morphometry of the individuals are presented and compared with data recorded for other localities. The occurrence of this bat species in the region, though new, is consistent with information on its natural history found in the literature.

Quirópteros da Reserva Biológica do Tinguá, estado do Rio de Janeiro, sudeste do Brasil (Mammalia: Chiroptera)

“…Um total de 71 espécies, em 41 gêneros e nove famílias foi listado para o Estado por ESBERÁRD & BERGALLO (2005). Inventários mais recentes têm registrado novas ocorrências, como por exemplo Mimon crenulatum (E. Geoffroy, 1803) (MELLO & POL 2006) e Myotis riparius Handley, 1960(DIAS & PERACCHI 2007. Pelo menos mais oito espécies, com base em distribuição geográfica, podem vir ainda a serem registradas (ESBERÁRD & BERGALLO 2005).…”

Morcegos da região sul do Brasil: análise comparativa da riqueza de espécies, novos registros e atualizações nomenclaturais (Mammalia, Chiroptera)

“…Chama a atenção o número de ampliações de distribuições geográficas e novos registros (e.g. DIAS et al, 2003;NOGUEIRA et al, 2003;POL et al, 2003;GREGORIN et al, 2004;CAMARGO & FISCHER, 2005;BORDIGNON, 2005;AGUIAR et al, 2006;FABIÁN et al, 2006;MELLO & POL, 2006;MIKALUSKAS et al, 2006;MIRANDA et al, 2006bMIRANDA et al, , 2007aMIRANDA et al, , 2007bSODRÉ & UIEDA, 2006;WEBER et al, 2006WEBER et al, , 2007BERNARDI et al, 2007;GAZARINI & BERNARDI, 2007;LONGO et al, 2007;SCULTORI et al, 2009). Além dessas novas ocorrências, foram realizadas descrições de novas espécies para o Brasil: Xeronycteris vierai Gregorin & Diethfield, 2006, Thyroptera devivoi Gregorin, Gonçalves & Engstron, 2006 e Eptesicus taddeii Miranda, Bernardi & Passos, 2006(GREGORIN & DIETCHFIELD, 2006MIRANDA et al, 2006a).…”

Sexual Size Dimorphism of a Sensory Structure in a Monomorphic Bat

“…As G. crenulatum is an insectivorous bat that forages in the understory (Willig, 1983;Pedro et al, 1994;Simmons and Voss, 1998;Gian nini and Kalko, 2005;Mello and Pol, 2006;, it depends on echolocation to catch prey and fulfill its energetic demands (Schnitzler and Kalko, 2001). Furthermore, considering that female bats spend time nursing and feeding pups (Kunz and Hood, 2000) and thus have less available time to secure food, females of G. crenulatum are expected to be effective foragers.…”

“…But previous studies on sexual size differentiation have failed to report differences in dental traits between males and females of G. crenulatum (Willig, 1983;Simmons and Voss, 1998); other studies have noted that there is not enough information about the diet differentiation of this species (Pedro et al, 1994;Simmons and Voss, 1998;Giannini and Kalko, 2005;Mello and Pol, 2006); and further to this, the method used for field captures of the current specimens was performed without space and time stra tification (Matthias et al, 2005;Willig et al, 2007). Therefore, differences in nose-leaves between sexes would not be related to resource partitioning.…”

“…This species is mainly insectivorous and forages in the understory (Pedro et al, 1994;Simmons and Voss, 1998;Giannini and Arita (1990). Images are not to scale Sensory structure in a monomorphic bat 77 Kalko, 2005;Mello and Pol, 2006;. Several studies have noted that there are no morphometric differences between sexes in this species (Willig, 1983;Pedro et al, 1994;Simmons and Voss, 1998).…”