Presencia espacial y temporal de Aramus guarauna (Gruiformes: Aramidae) y de Rostrhamus sociabilis (Accipitriformes: Accipitridae) en la Reserva de la Biósfera Marismas Nacionales, Nayarit, México
Spatial and temporal presence of Aramus guarauna (Gruiformes: Aramidae) and Rostrhamus sociabilis (Accipitriformes: Accipitridae) in the Marismas Nacionales Biosphere Reserve, Nayarit, Mexico. Monthly visits were conducted at 12 sites located at Marismas Nacionales (November 2010 to June 2011). In five of them we regularly observed the Limpkin (Aramus guarauna) and in three, the Snail Kite (Rostrhamus sociabilis). The Apple Snail (Pomacea spp.) is abundant in the brackish wetlands and is the most important prey of both species. In 31 observations we recorded 493 limpkins, mainly in Las Cañadas and La Batanga (together: 64% of the records). In March and April we observed flocks of up 80 individuals, in probable relation with the dry season. We obtained 109 records of the kites, always lonely and concentrated in Zoquipan and Mexcaltitan (96%). The presence of the snail in Marismas Nacionales allows both species to expand their range along the Mexican Pacific, at least to the north of Sinaloa, were the lack of fresh water will hinder the establishment of snail populations.KEY WORDSAramus guarauna, Rostrhamus sociabilis, spatial distribution, temporal distribution, Marismas Nacionales, Nayarit, Pomacea spp.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Estatal a Distancia, Costa Rica
2013
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| Online Access: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/188 |
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