Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and Ecuador
Oecomys is a moderately specious genus of small to medium size. Within the genus, the species O. bicolor is readily recognized; however, it has been reported individual variation in size and color from different populations suggesting that the species could be a species complex. Intraspecific inform...
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| Format: | Article |
| Language: | English |
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Universidad Nacional Mayor de San Marcos
2017-12-01
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| Series: | Revista Peruana de Biología |
| Subjects: | |
| Online Access: | http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/13918 |
| _version_ | 1818534052548837376 |
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| author | Maria Fernanda Menajovsky Bonifaz Victor Raul Pacheco Torres |
| author_facet | Maria Fernanda Menajovsky Bonifaz Victor Raul Pacheco Torres |
| author_sort | Maria Fernanda Menajovsky Bonifaz |
| collection | DOAJ |
| description | Oecomys is a moderately specious genus of small to medium size. Within the genus, the species O. bicolor is readily recognized; however, it has been reported individual variation in size and color from different populations suggesting that the species could be a species complex. Intraspecific information in O. bicolor is limited despite its wide distribution; but, this information is necessary for delimiting the species as well as explaining variations within populations. Therefore, in the present study 148 specimens of O. bicolor were analyzed, with the objective of evaluating the non-geographic variation of the species related to sex and age. 13 skull-dental variables were analyzed. Univariate and multivariate statistical approximations showed that sexual dimorphism is not significant; on the other hand, the ontogenic variation is considerable among young adults, these results are consistent with previous studies in sigmodontine rodents. It is recommended to continue studies of geographic variation with only ages 3, 4 and 5, and treating males and females collectively. |
| first_indexed | 2024-12-11T18:06:44Z |
| format | Article |
| id | doaj.art-b50d6bc9608f4ec99ecb7e236ad3be3c |
| institution | Directory Open Access Journal |
| issn | 1561-0837 1727-9933 |
| language | English |
| last_indexed | 2024-12-11T18:06:44Z |
| publishDate | 2017-12-01 |
| publisher | Universidad Nacional Mayor de San Marcos |
| record_format | Article |
| series | Revista Peruana de Biología |
| spelling | doaj.art-b50d6bc9608f4ec99ecb7e236ad3be3c2022-12-22T00:55:43ZengUniversidad Nacional Mayor de San MarcosRevista Peruana de Biología1561-08371727-99332017-12-0124438339010.15381/rpb.v24i4.1391812239Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and EcuadorMaria Fernanda Menajovsky Bonifaz0Victor Raul Pacheco Torres1Universidad Nacional Mayor de San Marcos, Museo de Historia Natural, Departamento de Mastozoología, Apartado 14-0434. Lima 14, Perú.Universidad Nacional Mayor de San Marcos, Museo de Historia Natural, Departamento de Mastozoología, Apartado 14-0434. Lima 14, Perú. Instituto de Ciencias Biológicas “Antonio Raimondi”, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Perú.Oecomys is a moderately specious genus of small to medium size. Within the genus, the species O. bicolor is readily recognized; however, it has been reported individual variation in size and color from different populations suggesting that the species could be a species complex. Intraspecific information in O. bicolor is limited despite its wide distribution; but, this information is necessary for delimiting the species as well as explaining variations within populations. Therefore, in the present study 148 specimens of O. bicolor were analyzed, with the objective of evaluating the non-geographic variation of the species related to sex and age. 13 skull-dental variables were analyzed. Univariate and multivariate statistical approximations showed that sexual dimorphism is not significant; on the other hand, the ontogenic variation is considerable among young adults, these results are consistent with previous studies in sigmodontine rodents. It is recommended to continue studies of geographic variation with only ages 3, 4 and 5, and treating males and females collectively.http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/13918OecomysOrizominoOntogeniaDimorfismo Sexual |
| spellingShingle | Maria Fernanda Menajovsky Bonifaz Victor Raul Pacheco Torres Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and Ecuador Revista Peruana de Biología Oecomys Orizomino Ontogenia Dimorfismo Sexual |
| title | Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and Ecuador |
| title_full | Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and Ecuador |
| title_fullStr | Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and Ecuador |
| title_full_unstemmed | Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and Ecuador |
| title_short | Ontogenetic and sexual variation of Oecomys bicolor (Rodentia, Cricetidae) from Peru and Ecuador |
| title_sort | ontogenetic and sexual variation of oecomys bicolor rodentia cricetidae from peru and ecuador |
| topic | Oecomys Orizomino Ontogenia Dimorfismo Sexual |
| url | http://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/13918 |
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