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https://repository.unad.edu.co/handle/10596/32274| Title: | Foraging behavior in giant otters (Pteronura brasiliensis), a case study in Santa Rosa de Sapuara, department of Guainía, Colombia. Comportamiento de forrajeo en nutrias gigantes (Pteronura brasiliensis) estudio de caso en Santa Rosa de Sapuara, departamento de Guainía, Colombia |
| metadata.dc.creator: | Chavez-Fontecha, Engelbert Ortega Torres, M. Janeth Torres Romero, José Camilo |
| Keywords: | Pteronura;fishing;cooperation behavior and Guainía-Colombía;Pteronura;forrajeo;cooperación;conservación;comportamiento |
| Publisher: | Universidad Nacional Abierta y a Distancia, UNAD |
| metadata.dc.relation: | https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3286 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3229 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3576 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3577 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3578 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3579 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3580 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3581 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3582 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3583 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3611 https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749/3635 |
| metadata.dc.format.*: | application/pdf text/html image/tiff image/tiff image/tiff image/tiff image/png application/pdf image/jpeg image/jpeg application/msword text/xml |
| metadata.dc.type: | info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Área Pecuaria |
| Description: | The feeding behavior in the giant otter (Pteronura brasiliensis) has been described by several authors, however, the coordinated way in which the otter takes part in the hunting and obtains his feeding, has not been studied in detail. This paper systematizes the information of observations on the hunting behavior of Pteronura brasiliensis, in the Sapuara lagoon in the department of Guanía, Colombia, and allowed to describe hunting as a cooperative and highly organized behavior. This behavior has been studied through ad-libitum observations, from rocks and trees of 10 to 20 meters high with a horizontal viewing range of 110º. Some of the parameters analyzed were fishing strategy, type of shore, time spent on fishing, number of active otters (otters that participated in the fishing), depth, climatic conditions, and effectiveness of hunting. In the end, 11 cooperative fishing behaviors were observed, which were classified into three groups: Arrowhead, ranks and rounding. The most frequent of all those observed in farm work was arrowhead with a percentage of 38 %, with an average number of 7 otters participating in the hunt and with a success rate of up to 87 %. This is a new instrument for the approach of the study of the behavior of P. brasiliensis from the cooperative perspective of hunting. La disponibilidad de alimento en la naturaleza no es estática, se presenta como un fenómeno dinámico que depende y varía en función de múltiples factores dentro del ecosistema. En este trabajo se expone mediante un estudio de caso, las diferentes estrategias de pesca en una población de nutrias gigante (Pteronura brasiliensis) que posiblemente sean el resultado evolutivo de presiones ambientales. Este comportamiento se estudió a través de observaciones ad-libitum, desde rocas y árboles de 10 a 20 metros de altura con un rango de visión horizontal de 110º. Algunos parámetros analizados fueron: estrategia de pesca, tipo de orilla, tiempo invertido en la pesca, número de nutrias activas (nutrias que participaron en la pesca), profundidad, condiciones climáticas, y efectividad de la pesca. Se observó que un grupo de nutrias se sumerge en promedio en intervalos de 16x"> = 13 segundos y σ 2 = 8.54, el número promedio de nutras participando de la pesca fue de 7 y la pesca exitosa fue de hasta el 87%. En total se observaron 11 comportamientos cooperativos de pesca los cuales se clasificaron en tres grupos: Punta de flecha, filas y corraleo, la más frecuentes fue la punta de flecha con un porcentaje de 38%. |
| metadata.dc.source: | Revista de Investigación Agraria y Ambiental; Vol. 10 No. 2 (2019); 75 - 88 Revista de Investigación Agraria y Ambiental; Vol. 10 Núm. 2 (2019); 75 - 88 2145-6453 2145-6097 |
| Other Identifiers: | https://hemeroteca.unad.edu.co/index.php/riaa/article/view/2749 10.22490/21456453.2749 |
| Appears in Collections: | Revista RIAA |
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