A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae)
We tested the applicability of Allen ' s rule in 47 species and 32 unnamed forms (populations that are probably good species or undefined taxa within a superspecies or species group) of the South American subterranean Hystricomorph rodents of the genus Ctenomys (tuco-tucos) (Rodentia: Ctenomyid...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v75_n4_p311_Bidau http://hdl.handle.net/20.500.12110/paper_00251461_v75_n4_p311_Bidau |
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paper:paper_00251461_v75_n4_p311_Bidau2023-06-08T14:52:45Z A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae) Bidau, Claudio Juan Allometry Body proportions Climate Geographic cline Subterranean rodent allometry body mass body size climate variation cohort analysis correlation evapotranspiration geographical distribution rodent subterranean environment tail feather thermoregulation Caviomorpha Ctenomyidae Ctenomys Hystricognathi Mammalia Rodentia We tested the applicability of Allen ' s rule in 47 species and 32 unnamed forms (populations that are probably good species or undefined taxa within a superspecies or species group) of the South American subterranean Hystricomorph rodents of the genus Ctenomys (tuco-tucos) (Rodentia: Ctenomyidae) by analyzing tail length in relation with head and body length, and body mass. Tail length allometry was analyzed by Reduced Major Axis regression while the possible correlation of relative tail length with temperature, precipitation and evapotranspiration variables was explored through Simultaneous Autoregression to account for spatial autocorrelations. Our results indicate that tuco-tucos do not follow Allen ' s rule but its converse, tail proportion relative to body mass increasing with latitude while body size decreases in the same direction (the trend is similar for tail length relative to head and body length but not statistically significant). Regarding climatic variables, the main predictors of relative tail length were temperature and evapotranspiration variables with trends confirming the positive (non-Allenian) correlation of relative tail length with latitude. We conclude that tuco-tucos, being almost fully subterranean, thermoregulate behaviorally by maintaining constant temperatures within their burrows independent of geographic location. The former confirms previous results that indicated that Ctenomys follows the converse to Bergmann ' s rule. Relative tail length variation would be a result of simple allometric growth. © 2011 by Walter de Gruyter. Fil:Bidau, C.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v75_n4_p311_Bidau http://hdl.handle.net/20.500.12110/paper_00251461_v75_n4_p311_Bidau |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Allometry Body proportions Climate Geographic cline Subterranean rodent allometry body mass body size climate variation cohort analysis correlation evapotranspiration geographical distribution rodent subterranean environment tail feather thermoregulation Caviomorpha Ctenomyidae Ctenomys Hystricognathi Mammalia Rodentia |
| spellingShingle |
Allometry Body proportions Climate Geographic cline Subterranean rodent allometry body mass body size climate variation cohort analysis correlation evapotranspiration geographical distribution rodent subterranean environment tail feather thermoregulation Caviomorpha Ctenomyidae Ctenomys Hystricognathi Mammalia Rodentia Bidau, Claudio Juan A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae) |
| topic_facet |
Allometry Body proportions Climate Geographic cline Subterranean rodent allometry body mass body size climate variation cohort analysis correlation evapotranspiration geographical distribution rodent subterranean environment tail feather thermoregulation Caviomorpha Ctenomyidae Ctenomys Hystricognathi Mammalia Rodentia |
| description |
We tested the applicability of Allen ' s rule in 47 species and 32 unnamed forms (populations that are probably good species or undefined taxa within a superspecies or species group) of the South American subterranean Hystricomorph rodents of the genus Ctenomys (tuco-tucos) (Rodentia: Ctenomyidae) by analyzing tail length in relation with head and body length, and body mass. Tail length allometry was analyzed by Reduced Major Axis regression while the possible correlation of relative tail length with temperature, precipitation and evapotranspiration variables was explored through Simultaneous Autoregression to account for spatial autocorrelations. Our results indicate that tuco-tucos do not follow Allen ' s rule but its converse, tail proportion relative to body mass increasing with latitude while body size decreases in the same direction (the trend is similar for tail length relative to head and body length but not statistically significant). Regarding climatic variables, the main predictors of relative tail length were temperature and evapotranspiration variables with trends confirming the positive (non-Allenian) correlation of relative tail length with latitude. We conclude that tuco-tucos, being almost fully subterranean, thermoregulate behaviorally by maintaining constant temperatures within their burrows independent of geographic location. The former confirms previous results that indicated that Ctenomys follows the converse to Bergmann ' s rule. Relative tail length variation would be a result of simple allometric growth. © 2011 by Walter de Gruyter. |
| author |
Bidau, Claudio Juan |
| author_facet |
Bidau, Claudio Juan |
| author_sort |
Bidau, Claudio Juan |
| title |
A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae) |
| title_short |
A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae) |
| title_full |
A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae) |
| title_fullStr |
A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae) |
| title_full_unstemmed |
A test of Allen's rule in subterranean mammals: The genus Ctenomys (Caviomorpha, Ctenomyidae) |
| title_sort |
test of allen's rule in subterranean mammals: the genus ctenomys (caviomorpha, ctenomyidae) |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v75_n4_p311_Bidau http://hdl.handle.net/20.500.12110/paper_00251461_v75_n4_p311_Bidau |
| work_keys_str_mv |
AT bidauclaudiojuan atestofallensruleinsubterraneanmammalsthegenusctenomyscaviomorphactenomyidae AT bidauclaudiojuan testofallensruleinsubterraneanmammalsthegenusctenomyscaviomorphactenomyidae |
| _version_ |
1768545453083721728 |