Caracterización morfológica y evaluación etológica del añuje (Dasyprocta fuliginosa) en un centro de rescate de la selva peruana
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Authors
Valle Orozco, Noelia
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Abstract
El añuje (Dasyprocta fuliginosa) es el roedor neotropical más grande de su género, con un rol ecológico en la dispersión de semillas; y socioeconómico como fuente proteica de las comunidades indígenas y rurales de la Amazonía peruana. Sin embargo, la información sobre su manejo en cautiverio es limitada, por lo que esta investigación buscó generar información que contribuya a explorar su potencial zootécnico. Se estudió una población de añujes (n=9) del Centro de Rescate “Urku” en Tarapoto, Perú; en los que se caracterizaron las medidas morfométricas y el peso vivo por sexo, lo que permitió obtener información sobre su variabilidad corporal. También, se registró y evaluó el comportamiento de los individuos, analizando las actividades más frecuentes e identificándose los patrones conductuales diarios por sexo. Se emplearon análisis estadísticos paramétricos (T-student y ANOVA) y no paramétricos (Wilcoxon) para evaluar la variación en los datos morfométricos; encontrándose diferencias estadísticamente significativas (P<0,05) entre sexos; las hembras presentaron mayor volumen y peso, mientras que los machos, mostraron cuerpos más alargados y delgados. En la evaluación etológica se aplicó la Prueba de Fisher para determinar la variabilidad en las actividades, además de la prueba de Chi-cuadrado para identificar diferencias en los grupos conductuales entre hembras y machos. Además, se elaboró la curva de patrón de actividad diaria por sexo; y se utilizó la prueba de Chi-cuadrado para analizar su variación entre sexos. Los resultados de esta evaluación confirmaron un comportamiento general de tipo diurno en hembras y machos, evidenciado por picos de actividad entre las 06:00 a 18:00 horas. Esta información resulta relevante para optimizar el manejo del bienestar de la especie en su proceso de adaptación en cautiverio ya sea con fines de consumo humano o para su posterior reintroducción en el medio silvestre.
The añuje (Dasyprocta fuliginosa) is the largest Neotropical rodent of its genus, playing an ecological role in seed dispersal and a socioeconomic role as a protein source for indigenous and rural communities in the Peruvian Amazon. However, information on its management in captivity is limited, so this study sought to generate information that contributes to exploring its zootechnical potential. A population of Añujes (n=9) from the "Urku" Rescue Center in Tarapoto, Perú, was studied. Morphometric measurements and live weight by sex were characterized, which provided information on their body variability. In addition, the behavior of individuals was recorded and evaluated, analyzing their most frequent activities and identifying daily behavioral patterns by sex. Parametric (Student's t-test and ANOVA) and nonparametric (Wilcoxon) statistical analyses were used to evaluate variation in morphometric data. Statistically significant differences (P < 0.05) were found between sexes; females presented greater volume and weight, while males showed longer and thinner bodies. In the ethological evaluation, Fisher's test was applied to determine the variability in activities, in addition to the Chi-square test to identify differences in behavioral groups between females and males. In addition, the daily activity pattern curve by sex was developed; and the Chi-square test was used to analyze its variation between sexes. The results of this evaluation confirmed a general diurnal behavior in females and males, evidenced by peaks of activity between 6:00 a.m. and 6:00 p.m. This information is relevant to optimize the management of the species' welfare in its adaptation process in captivity, either for human consumption or for its subsequent reintroduction into the wild.
The añuje (Dasyprocta fuliginosa) is the largest Neotropical rodent of its genus, playing an ecological role in seed dispersal and a socioeconomic role as a protein source for indigenous and rural communities in the Peruvian Amazon. However, information on its management in captivity is limited, so this study sought to generate information that contributes to exploring its zootechnical potential. A population of Añujes (n=9) from the "Urku" Rescue Center in Tarapoto, Perú, was studied. Morphometric measurements and live weight by sex were characterized, which provided information on their body variability. In addition, the behavior of individuals was recorded and evaluated, analyzing their most frequent activities and identifying daily behavioral patterns by sex. Parametric (Student's t-test and ANOVA) and nonparametric (Wilcoxon) statistical analyses were used to evaluate variation in morphometric data. Statistically significant differences (P < 0.05) were found between sexes; females presented greater volume and weight, while males showed longer and thinner bodies. In the ethological evaluation, Fisher's test was applied to determine the variability in activities, in addition to the Chi-square test to identify differences in behavioral groups between females and males. In addition, the daily activity pattern curve by sex was developed; and the Chi-square test was used to analyze its variation between sexes. The results of this evaluation confirmed a general diurnal behavior in females and males, evidenced by peaks of activity between 6:00 a.m. and 6:00 p.m. This information is relevant to optimize the management of the species' welfare in its adaptation process in captivity, either for human consumption or for its subsequent reintroduction into the wild.
Description
Universidad Nacional Agraria La Molina. Facultad de Zootecnia. Departamento
Académico de Producción Animal
Keywords
Morfometría
Citation
Date
2025
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