2017
DOI: 10.15381/rpb.v24i4.13918
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Variación ontogénica y sexual de Oecomys bicolor (Rodentia, Cricetidae) de Perú y Ecuador

Abstract: Oecomys es un género moderadamente especioso de tamaño pequeño a mediano y coloración característica. Dentro del género, la especie O. bicolor es reconocida morfológicamente con relativa facilidad; sin embargo, se ha reportado variaciones individuales, en tamaño y color, de distintas poblaciones que sugieren la especie podría ser un complejo de especies. La información intraespecífica presente en O. bicolor es muy poca a pesar de su amplia distribución; no obstante, esta información es necesaria para la delimi… Show more

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“…However, this apparent general pattern shows some peculiarities when compared with other groups of mammals previously studied using the same methodology (mostly mammals with carnivorous habits; e.g., Flores et al, 2018; Segura, 2014; Segura & Prevosti, 2012; Tarnawski et al, 2014). Similar morphological change patterns were described in other sigmodontines, albeit with different methodological approaches, such as Rhipidomys latimanus (Tomes 1860) (López‐Fuster et al, 2001), Akodon montensis Thomas 1913 (Hernández et al, 2017), A. boliviensis Meyen 1833 (Myers et al, 1990), A azarae (Fischer 1829), Nephelomys albigularis (Tomes 1860) (Wilson & Sánchez‐Villagra, 2010); Sigmodon Say & Ord 1825 (Jiménez, 1971), Zygodontomys Allen 1897 (Voss & Marcus, 1992), Calomys expulsus (Lund 1840) (Hingst‐Zaher et al, 2000), Oecomys Thomas 1906 (Menajovsky & Pacheco, 2017), and Aegialomys Weksler, Percequillo & Voss 2006 (Prado & Percequillo, 2011), among others, which suggests a widespread and likely plesiomorphic ontogenetic pattern in the clade. This pattern has a functional correlate; for example, the positive allometry (or isometric condition) of the trophic apparatus in sigmodontines determines a shorter and broader cranial structure in young specimens, which is functionally more related to suckling activity.…”
Section: Discussionmentioning
confidence: 99%
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“…However, this apparent general pattern shows some peculiarities when compared with other groups of mammals previously studied using the same methodology (mostly mammals with carnivorous habits; e.g., Flores et al, 2018; Segura, 2014; Segura & Prevosti, 2012; Tarnawski et al, 2014). Similar morphological change patterns were described in other sigmodontines, albeit with different methodological approaches, such as Rhipidomys latimanus (Tomes 1860) (López‐Fuster et al, 2001), Akodon montensis Thomas 1913 (Hernández et al, 2017), A. boliviensis Meyen 1833 (Myers et al, 1990), A azarae (Fischer 1829), Nephelomys albigularis (Tomes 1860) (Wilson & Sánchez‐Villagra, 2010); Sigmodon Say & Ord 1825 (Jiménez, 1971), Zygodontomys Allen 1897 (Voss & Marcus, 1992), Calomys expulsus (Lund 1840) (Hingst‐Zaher et al, 2000), Oecomys Thomas 1906 (Menajovsky & Pacheco, 2017), and Aegialomys Weksler, Percequillo & Voss 2006 (Prado & Percequillo, 2011), among others, which suggests a widespread and likely plesiomorphic ontogenetic pattern in the clade. This pattern has a functional correlate; for example, the positive allometry (or isometric condition) of the trophic apparatus in sigmodontines determines a shorter and broader cranial structure in young specimens, which is functionally more related to suckling activity.…”
Section: Discussionmentioning
confidence: 99%
“…However, this apparent general pattern shows some peculiarities when compared with other groups of mammals previously studied using the same methodology (mostly mammals with carnivorous habits; e.g., Flores et al, 2018;Segura, 2014;Segura & Prevosti, 2012;Tarnawski et al, 2014). Similar morphological change patterns were described in other sigmodontines, albeit with different methodological approaches, such as Rhipidomys latimanus (Tomes 1860) (López-Fuster et al, 2001), Akodon montensis Thomas 1913 (Hernández et al, 2017), A. boliviensis Meyen 1833 (Myers et al, 1990), A azarae (Fischer 1829), Nephelomys albigularis (Tomes 1860) (Wilson & Sánchez-Villagra, 2010); Sigmodon Say & Ord 1825 (Jiménez, 1971), Zygodontomys Allen 1897 (Voss & Marcus, 1992), Calomys expulsus (Lund 1840) (Hingst-Zaher et al, 2000), Oecomys Thomas 1906 (Menajovsky & Pacheco, 2017)…”
Section: How Sigmodontine Crania Growmentioning
confidence: 99%