Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1186/s40693-017-0064-3 |
Winter diet of the long-eared owl Asio otus (Strigiformes: Strigidae) in the grasslands of Janos, Chihuahua, Mexico | |
Gonzalez-Rojas, Jose I.; Padilla-Rangel, Hernaldo; Ruvalcaba-Ortega, Irene; Cruz-Nieto, Miguel A.; Canales-del-Castillo, Ricardo; Guzman-Velasco, Antonio | |
通讯作者 | Gonzalez-Rojas, Jose I. |
来源期刊 | REVISTA CHILENA DE HISTORIA NATURAL
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ISSN | 0716-078X |
EISSN | 0717-6317 |
出版年 | 2017 |
卷号 | 90 |
英文摘要 | Background: The long-eared owl (Asio otus) has a Holarctic distribution, including much of North America. This nocturnal species is considered to be extremely secretive, and poorly known in the Great Plains of the United States and Canada, as well as to Mexico, where no previous studies on its diet have been conducted. Findings: We analyzed 120 pellets collected during January 2007 in roosts in a 2-3 m height mesquite scrub within a grassland area of Reserva Ecologica El Uno, located in the Natural Protected Area Janos. We registered and identified three orders, four families, eight genera and ten species of mammals and two orders and one family of insects. Winter diet is dominated by mammals, especially rodents in both frequency and biomass. Cricetidae and Perognathus flavus were the most frequent family and species, respectively. On the other hand, when analyzing biomass, Sigmodon species were dominant, achieving almost 70% of the consumed biomass. Levin’s standardized niche breath based on frequency was calculated as 0.40, while based on biomass was 0.38. Also, two previously unrecorded rodent species were identified as long-eared owl prey. Conclusion: Although 18 different types of items were identified, the long-eared owl tends to be selective, with a single genera (Sigmodon) comprising almost 70% of its consumed biomass during winter. Perognathus flavus was also important in frequency (21%); however, it barely constitutes 2% of the consumed biomass. |
英文关键词 | Winter diet Long-eared owl Grasslands Janos Mexico |
类型 | Article |
语种 | 英语 |
国家 | Mexico |
收录类别 | SCI-E |
WOS记录号 | WOS:000392889300001 |
WOS关键词 | FEEDING ECOLOGY ; COMMUNAL ROOST ; FOOD-HABITS ; DESERT ; PREY |
WOS类目 | Biodiversity Conservation ; Ecology |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/202073 |
作者单位 | UANL, Fac C Biol, Av Univ S-N,Cd Univ, San Nicolas De Los Garza 66455, Leon, Mexico |
推荐引用方式 GB/T 7714 | Gonzalez-Rojas, Jose I.,Padilla-Rangel, Hernaldo,Ruvalcaba-Ortega, Irene,et al. Winter diet of the long-eared owl Asio otus (Strigiformes: Strigidae) in the grasslands of Janos, Chihuahua, Mexico[J],2017,90. |
APA | Gonzalez-Rojas, Jose I.,Padilla-Rangel, Hernaldo,Ruvalcaba-Ortega, Irene,Cruz-Nieto, Miguel A.,Canales-del-Castillo, Ricardo,&Guzman-Velasco, Antonio.(2017).Winter diet of the long-eared owl Asio otus (Strigiformes: Strigidae) in the grasslands of Janos, Chihuahua, Mexico.REVISTA CHILENA DE HISTORIA NATURAL,90. |
MLA | Gonzalez-Rojas, Jose I.,et al."Winter diet of the long-eared owl Asio otus (Strigiformes: Strigidae) in the grasslands of Janos, Chihuahua, Mexico".REVISTA CHILENA DE HISTORIA NATURAL 90(2017). |
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