The thermal niche of Neotropical nectar-feeding bats: Its evolution and application to predict responses to global warming
Por:
Ortega-Garcia, Stephanie, Guevara, Lazaro, Arroyo-Cabrales, Joaquin, Lindig-Cisneros, Roberto, Martinez-Meyer, Enrique, Vega, Ernesto, Schondube, Jorge E.
Publicada:
1 sep 2017
Resumen:
The thermal niche of a species is one of the main determinants of its
ecology and biogeography. In this study, we determined the thermal niche
of 23 species of Neotropical nectar-feeding bats of the subfamily
Glossophaginae (Chiroptera, Phyllostomidae). We calculated their thermal
niches using temperature data obtained from collection records, by
generating a distribution curve of the maximum and minimum temperatures
per locality, and using the inflection points of the temperature
distributions to estimate the species optimal (STZ) and suboptimal (SRZ)
zones of the thermal niche. Additionally, by mapping the values of the
STZ and SRZ on a phylogeny of the group, we generated a hypothesis of
the evolution of the thermal niches of this clade of nectar-feeding
bats. Finally, we used the characteristics of their thermal niches to
predict the responses of these organisms to climate change. We found a
large variation in the width and limits of the thermal niches of
nectar-feeding bats. Additionally, while the upper limits of the thermal
niches varied little among species, their lower limits differ wildly.
The ancestral reconstruction of the thermal niche indicated that this
group of Neotropical bats evolved under cooler temperatures. The two
clades inside the Glossophaginae differ in the evolution of their
thermal niches, with most members of the clade Choeronycterines evolving
colder thermal niches, while the majority of the species in the clade
Glossophagines evolving warmer thermal niches. By comparing thermal
niches with climate change models, we found that all species could be
affected by an increase of 1 degrees C in temperature at the end of this
century. This suggests that even nocturnal species could suffer
important physiological costs from global warming. Our study highlights
the value of scientific collections to obtain ecologically significant
physiological data for a large number of species.
Filiaciones:
Ortega-Garcia, Stephanie:
Univ Nacl Autonoma Mexico, Posgrad Ciencias Biol, Mexico City, DF, Mexico
Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Guevara, Lazaro:
Univ Nacl Autonoma Mexico, Dept Biol Evolut, Fac Ciencias, Mexico City, DF, Mexico
Arroyo-Cabrales, Joaquin:
Inst Nacl Antropol & Hist, Mexico City, DF, Mexico
Lindig-Cisneros, Roberto:
Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Martinez-Meyer, Enrique:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Zool, Mexico City, DF, Mexico
Vega, Ernesto:
Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
Schondube, Jorge E.:
Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
|