Seasonal pelage color change: news based on a South American Rodent
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Academia Brasileira de Ciências
2006
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| _version_ | 1876441636441948160 |
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| author | Carolina R. Camargo |
| author_facet | Carolina R. Camargo |
| contents | Seasonal pelage color change: news based on a South American Rodent Carolina R. Camargo Ana Maria L. Castrucci Elton Colares Multidisciplinaria (Ciencias Naturales y Exactas) molt seasonality Color change pelage color endogenous rhythm Mammalian seasonalmolting and color change are known to be influencedby photoperiod changes. Calomyslaucha, a South American rodent, exhibits seasonal pelage color change; however, unlike Northern hemisphererodents, which present a gray or brown color during summer and a whitish color during winter, C.laucha pelage changes from an orange color during summer to a dark gray color during winter. Animalsmaintained for over a year in stationary photoperiod (LD 12:12h, 22◦C) presented orange pelage color duringthe summer corresponding month (January), and gray color during the winter corresponding month (July).Same age animals were evaluated during summer or winter months, and also showed different colors. Animalsexposed for 12 weeks to summer or winter artificial conditions displayed color change, not accordingto the environmental conditions, as expected, but similar to that of animals maintained in stationary photoperiod.These results suggest that pelage color change in C. laucha is controlled by an endogenous circannualrhythm. The adaptive function of C. laucha color change is discussed. 2006 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32778109 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.78 |
| format | Artículo científico |
| id | redalyc_32778109 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Seasonal pelage color change: news based on a South American Rodent Carolina R. Camargo Multidisciplinaria (Ciencias Naturales y Exactas) molt seasonality Color change pelage color endogenous rhythm Seasonal pelage color change: news based on a South American Rodent Carolina R. Camargo Ana Maria L. Castrucci Elton Colares Multidisciplinaria (Ciencias Naturales y Exactas) molt seasonality Color change pelage color endogenous rhythm Mammalian seasonalmolting and color change are known to be influencedby photoperiod changes. Calomyslaucha, a South American rodent, exhibits seasonal pelage color change; however, unlike Northern hemisphererodents, which present a gray or brown color during summer and a whitish color during winter, C.laucha pelage changes from an orange color during summer to a dark gray color during winter. Animalsmaintained for over a year in stationary photoperiod (LD 12:12h, 22◦C) presented orange pelage color duringthe summer corresponding month (January), and gray color during the winter corresponding month (July).Same age animals were evaluated during summer or winter months, and also showed different colors. Animalsexposed for 12 weeks to summer or winter artificial conditions displayed color change, not accordingto the environmental conditions, as expected, but similar to that of animals maintained in stationary photoperiod.These results suggest that pelage color change in C. laucha is controlled by an endogenous circannualrhythm. The adaptive function of C. laucha color change is discussed. 2006 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32778109 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.78 |
| title | Seasonal pelage color change: news based on a South American Rodent |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) molt seasonality Color change pelage color endogenous rhythm |
| url | https://www.redalyc.org/articulo.oa?id=32778109 |