2024-03-29T07:40:26Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1735702021-12-27T16:16:14Zcom_10261_77com_10261_8col_10261_330
DIGITAL.CSIC
author
Hensen, Maristela Carpintero
author
Medina Hernández, Malva Isabel
author
da Silva, Pedro Giovâni
author
Amore, Valentina
author
Lobo, Jorge M.
funder
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil)
2018-12-21T14:52:21Z
2018-12-21T14:52:21Z
2018-09-21
Insects 9(4): 124 (2018)
http://hdl.handle.net/10261/173570
10.3390/insects9040124
2075-4450
http://dx.doi.org/10.13039/501100002322
30248894
Subspecies is a debated taxonomic rank that, in some cases, could indicate that a speciation process is taking place. Studying the degree of co-occurrence among subspecies along environmental gradients may help to determine its taxonomic status. In this study, we explore the distribution of two subspecies of Canthon rutilans along spatio-temporal and temperature gradients in the Atlantic Forest of southern Brazil in order to reinforce their current subspecies status or to support their consideration as two different species. A yearly survey conducted along an elevational transect (from 250 m to 1630 m) shows that there is no spatio-temporal overlap between the two taxa. We collected 899 individuals of Canthon rutilans cyanescens and 29 individuals of Canthon rutilans rutilans. C. rutilans cyanescens can be found at 250 m (all year except in June), 430 m (August to April), and 840 m (September to April) in elevation, and when the air temperature oscillates from 15.3 °C to 24.0 °C. C. rutilans rutilans can be found at 1360 m (October to February), 1630 m (January) in elevation, and when the air temperature oscillates from 14.4 °C to 18.6 °C. Furthermore, local temperature data taken during the survey indicates that both subspecies also have a limited overlap in their thermal response curves. All these results suggest that these two taxa could be considered as two different species with dissimilar physiological and ecological requirements probably as a consequence of temperature-mediated divergent adaptation. Further molecular data can confirm or reject this supposition in the near future.
openAccess
Speciation
Dung beetles
Canthon rutilans
Elevation
Gradient
Temperatures
Spatio-temporal distribution
Distribution of canthon rutilans rutilans and canthon rutilans cyanescens along spatio-temporal and temperature gradients
artículo
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URL
https://digital.csic.es/bitstream/10261/173570/1/insects-09-00124.pdf
File
MD5
6411770070853a88426dc2bdd86bc736
1485981
application/pdf
insects-09-00124.pdf