Wyniki wyszukiwania - Biblioteka Nauki

1

Ecological aspects of the tent building process by Ectophylla alba (Chiroptera: Phyllostomidae)

100%

Rodriguez-Herrera B. , Ceballos G. , Medellin R. A.

Acta Chiropterologica

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2011

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tom 13

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nr 2

2

Roosting requirements of white tent-making bat Ectophylla alba (Chiroptera: Phyllostomidae)

100%

Rodriguez-Herrera B. , Medellin R. A. , Gamba-Rios M.

Acta Chiropterologica

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2008

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tom 10

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nr 1

EN

Roosting ecology and its correlates are among the major forces driving the evolution of bats. However, roost ecology remains one of the most poorly understood topics on the basic biology of bats. Ectophylla alba is endemic to Central America with a very small distribution. This species generally modifies leaves of a certain size within the genus Heliconia. Here we explore this species' habitat preferences for the construction of its roosts. We identified three variables as the requirements of a suitable tent-building habitat: canopy coverage, understory coverage between 0–1 m of height, and density of Heliconia. Our results show that the process of habitat selection for roost construction is highly specialized to an intermediate stage of secondary succession, which in turn, makes Ectophylla even more vulnerable to extinction than previously believed.

3

Tent building by female Ectophylla alba (Chiroptera: Phyllostomidae) in Costa Rica

100%

Rodriguez-Herrera B. , Medellin R. A. , Gamba-Rios M.

Acta Chiropterologica

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2006

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tom 08

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nr 2

4

Food sharing behavior in the hairy-legged vampire bat Diphylla ecaudata

88%

Elizalde-Arellano C. , Lopez-Vidal J. C. , Arroyo-Cabrales J. , Medellin R. A. , Laundre J. W.

Acta Chiropterologica

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2007

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tom 09

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nr 1

5

Effective population size dynamics of Myotis vivesi during the Pleistocene and Holocene climatic changes

88%

Mejía O. , Herrera L. G. , May M. B. , Medellin R. A. , Flores-Martinez J. J.

Acta Chiropterologica

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2011

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tom 13

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nr 1

EN

Myotis vivesi (Fish-eating Myotis) is an endemic species of the Gulf of California, Mexico. In this study, a 282 bp fragment of the mtDNA control region and six microsatellites loci were used to reconstruct its demographic history using summary and coalescent based statistics. Our results suggest thatM vivesi experienced a demographic population expansion between 230,000 to 50,000 years ago. After this expansion, M. vivesi experienced a slight reduction in the effective population size between 30,000 to 5,000 years ago and a spatial expansion in the last 5,000 years. Population changes observed in M. vivesi could be related to climatic changes that occurred in the Gulf of California in the Pleistocene and Holocene periods.

6

Rediscovery of the Mexican flat-headed bat Myotis planiceps (Vespertilionidae)

75%

Arroyo-Cabrales J. , Kalko E. K. V. , Laval R. K. , Maldonado J. E. , Medellin R. A. , Polaco O. J. , Rodriguez-Herrera B.

Acta Chiropterologica

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2005

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tom 07

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nr 2

7

Natural history of the Caatinga endemic Vieira's flower Bat, Xeronycteris vieirai

63%

Cordero-Schmidt E. , Barbier E. , Vargas-Mena J. C. , Oliveira P. P. , De Assis R. Santos F. , Medellin R. A. , Herrera B. R. , Venticinque E. M.

Acta Chiropterologica

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2017

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tom 19

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nr 2

EN

Xeronycteris vieirai is an endemic bat species described by Gregorin and Ditchfield in 2005 only five specimens of which have been collected to date. It is considered Data Deficient by the IUCN Red List. There is little information about this species, so its ecological requirements are poorly known although its diet has been speculated to be nectarivorous. Xeronycteris vieirai apparently has a distribution restricted to the semi-arid Brazilian Caatinga, a habitat that has been highly degraded. We present here the first information about the natural history of X. vieirai, obtained through a large research project aiming at the ecology and conservation of bats in the Caatinga of the states of Rio Grande do Norte and Pernambuco, northeastern Brazil. From June 2014 to October 2015 we captured 62 individuals of X. vieirai at five sites, which represent new records and expand its known distribution, establishing the northernmost record. Xeronycteris vieirai feeds on nectar of at least nine species of plants belonging to six families, and mainly on the columnar cactus Pilosocereus pachycladus. The species has peak activity at 1830 h and shows an apparently seasonally monoestrous reproductive cycle (June–December). Adult females have longer forearms than adult males and are significantly heavier; there is no bias in the sex ratio. A colony of approximately 20 individuals was observed in a well-ventilated cave with natural lighting, representing the first documented roost for the species. Finally, ectoparasites of the genus Trichobius were found on 85.7% of the individuals examined, with no difference in parasite load between males and females.