Bats on the Move

Popa‐Lisseanu, Ana G.; Voigt, Christian C.

doi:10.1644/09-mamm-s-130r2.1

Cited by 95 publications

(79 citation statements)

References 57 publications

(59 reference statements)

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“…It has been long recognized that pollution, vandalism and urban development pose a threat to bat populations (Mickleburgh et al 2002, Kunz et al 2011). In addition, concern is growing about the impacts of climate change and wind turbines on bat migration in North America (Adams and Hayes 2008, Arnett et al 2008, Cryan and Barclay 2009, Popa-Lisseanu and Voigt 2009. Unfortunately, bat migration is poorly studied (Cryan and Diehl 2009, Holland and Wikelski 2009, Popa-Lisseanu and Voigt 2009, and knowledge of migratory routes used by Mexican free-tailed bats is scant.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, concern is growing about the impacts of climate change and wind turbines on bat migration in North America (Adams and Hayes 2008, Arnett et al 2008, Cryan and Barclay 2009, Popa-Lisseanu and Voigt 2009. Unfortunately, bat migration is poorly studied (Cryan and Diehl 2009, Holland and Wikelski 2009, Popa-Lisseanu and Voigt 2009, and knowledge of migratory routes used by Mexican free-tailed bats is scant. To address our lack of understanding of bat migration, and to provide tools for tackling the unique conservation challenges of a migratory species, we developed a network model for the Mexican free-tailed bat (Tadarida brasiliensis mexicana).…”

Section: Introductionmentioning

confidence: 99%

“…The small size, mobility, and nocturnal habits of most bats make tracking individual animals and population-level monitoring difficult, although see (Hayes et al 2009) for a review of recent progress in this area. While banding has been effective, large-scale programs were abandoned in North America during the 1970s due to concerns about injuries to bats (Ellison 2008, Cryan and Diehl 2009, Popa-Lisseanu and Voigt 2009. As a result, our knowledge of timing, departure points, energetic requirements, and routes followed by bats during migration remains limited (Popa-Lisseanu and Voigt 2009).…”

Section: Introductionmentioning

confidence: 99%

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Moving across the border: modeling migratory bat populations

et al. 2013

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Abstract. The migration of animals across long distances and between multiple habitats presents a major challenge for conservation. For the migratory Mexican free-tailed bat (Tadarida brasiliensis mexicana), these challenges include identifying and protecting migratory routes and critical roosts in two countries, the United States and Mexico. Knowledge and conservation of bat migratory routes is critical in the face of increasing threats from climate change and wind turbines that might decrease migratory survival. We employ a new modeling approach for bat migration, network modeling, to simulate migratory routes between winter habitat in southern Mexico and summer breeding habitat in northern Mexico and the southwestern United States. We use the model to identify key migratory routes and the roosts of greatest conservation value to the overall population. We measure roost importance by the degree to which the overall bat population declined when the roost was removed from the model. The major migratory routes-those with the greatest number of migrants-were between winter habitat in southern Mexico and summer breeding roosts in Texas and the northern Mexican states of Sonora and Nuevo Leon. The summer breeding roosts in Texas, Sonora, and Nuevo Leon were the most important for maintaining population numbers and network structure -these are also the largest roosts. This modeling approach contributes to conservation efforts by identifying the most influential areas for bat populations, and can be used to as a tool to improve our understanding of bat migration for other species. We anticipate this approach will help direct coordination of habitat protection across borders.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Moving across the border: modeling migratory bat populations

et al. 2013

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“…We fed 10 bats each with 5 mg 13 C-labelled glycine (C1-glycine; Euriso-Top GmbH, Saarbrü cken, Germany) and seven bats each with 5 mg 13 C-labelled palmitic acid (C1-palmitic acid; EurisoTop GmbH) to assess whether migratory bats oxidize either of the substrates, and, if so, how much of the orally fed dosage would be used for oxidation over the experimental period. Breath collection followed the procedure described for experiment II with the difference that breath samples were collected at times 0, 5,10,15,20,25,30,35,40,45, 50, 55, 60, 75 and 90 min. Stable isotope ratios of breath were analysed as described earlier.…”

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confidence: 99%

The insectivorous batPipistrellus nathusiiuses a mixed-fuel strategy to power autumn migration

et al. 2012

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In contrast to birds, bats are possibly limited in their capacity to use body fat as an energy source for long migrations. Here, we studied the fuel choice of migratory Pipistrellus nathusii (approximate weight: 8 g) by analysing the stable carbon isotope ratio (d C V-PDB of insect prey and adipocyte triacylglycerols, suggesting a mixed-fuel use of P. nathusii during autumn migration. To clarify the origin of oxidized fatty acids, we performed feeding experiments with captive P. nathusii. After an insect diet, bat breath was enriched in 13 C relative to the bulk and fat portion of insects, but not deviating from the non-fat portion of insects, suggesting that bats oxidized exogenous proteins and carbohydrates, but not exogenous fatty acids. A feeding experiment with 13 C-labelled substrates confirmed these findings. In conclusion, migratory P. nathusii oxidized dietary proteins directly from insects captured en route in combination with endogenous fatty acids from adipocytes, and replenished their body reserves by routing dietary fatty acids to their body reserves.

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“…In other families, few species have this behavior and most are classified in the Vespertillionidae family 28 . This migration, in some species, may be greater in females than in males and changes may occur especially in Neotropics wet and dry seasons 29 .…”

Section: Introductionmentioning

confidence: 99%