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Brito M. J.,National Polytechnic School of Ecuador | Brito M. J.,Museo Ecuatoriano Of Ciencias Naturales Del Instituto Nacional Of Biodiversidad | Almendariz A.,National Polytechnic School of Ecuador | Batallas R. D.,National Polytechnic School of Ecuador
Papeis Avulsos de Zoologia | Year: 2014

Information is presented on morphological variation in the frog, Phyllomedusa ecuatoriana, with a description ot the tadpole, vocalizations, and notes on its natural history and distribution, based on material recently collected in the Cordillera del Cóndor, Zamora Chinchipe Province, Ecuador. Phyllomedusa ecuatoriana is of médium size (male SVL length 46.1 to 55.4 mm; female SVL 72.2 mm). The tapole (Gosner stage 26) has a dentary formula of 2 (2)/3 (1); tooth row P3 is smaller than P1 and P2. The tadpoles develop in pools of various sizes in turbid water stained by the presence of tanins. The vocalizations are modulated frequencies, with the dominant frequency averaging 1.53 kHz; the calls are composed of a single note and 2-3 pulses. Adult frogs feed primarily on spiders (20[%]) of the family Argiopidae. © 2014, Universidade de Sao Paulo. All rights reserved.

Inclan D.J.,University of Padua | Inclan D.J.,Museo Ecuatoriano Of Ciencias Naturales Del Instituto Nacional Of Biodiversidad | Dainese M.,University of Padua | Cerretti P.,University of Padua | And 2 more authors.
Basic and Applied Ecology | Year: 2016

The introduction and conservation of field margins have been proposed as an intervention to counteract the decline in farmland biodiversity. However, how these margins can affect the movement of species and individuals (i.e. spillover) of natural enemies between field margins and crop is still unclear. In this work, we investigated the spillover of two different groups of natural enemies: tachinids (Diptera: Tachinidae) and aphidophagous hoverflies (Diptera: Syrphidae). For comparison we also investigated the response of non-aphidophagous hoverflies. We examined the spillover from two types of field margin (grass margin vs. hedgerow + grass margin) to adjacent maize fields located in landscapes with different proportion of arable land. The spillover of natural enemies was affected by the field margins, but the response varied between insect groups. The spillover of tachinids was higher from the grass margin than from hedgerows, suggesting that the spillover of this group may be related to the low contrast between the vegetation structure of the margin and the crop. In contrast to tachinids, the abundance of aphidophagous hoverflies was higher toward the center of the crop field, independently of the type of field margin. The spillover of non-aphidophagous hoverflies was not affected by the type of field margin. These species were only affected by the landscape composition as their species richness and abundance were higher in landscapes with low amounts of arable land. Measures focusing on the creation and management of field margins need to consider the local contrast between field margins and crops in relation to the life-history traits of different taxa. © 2015 Gesellschaft für Ökologie.

Brito J.,Museo Ecuatoriano Of Ciencias Naturales Del Instituto Nacional Of Biodiversidad | Orellana-Vasquez H.,Central University of Ecuador | Cadena-Ortiz H.,Technological Amerindian University, Ambato | Cadena-Ortiz H.,Pontifical Catholic University of Ecuador | And 3 more authors.
Papeis Avulsos de Zoologia | Year: 2015

We analyzed 107 owl pellets and determined 300 prey items grouped into 21 species. The pellets were collected at two locations with different environments: Los Santiagos and La Ciénaga in the province of Chimborazo and Manabí in western Ecuador. Our analysis revealed a diet mostly comprised on small mammals, especially rodents which constituted 80%. Among the most abundant prey were Oligoryzomys sp. which accounted for 38.7% of the diet in Los Santiagos’ samples and Sigmodon peruanus 33.6% in La Ciénaga, being 22.5% and 41% respectively of the total biomass consumed at each site. The crab-eating rat Ichthyomys hydrobates is first reported in this owl’s diet and in the locality of Los Santiagos. This record extends the distributional range of I. hydrobates to southwest Ecuador by about 200 km. © 2015, Universidade de Sao Paulo. All rights reserved.

Brito M. J.,Museo Ecuatoriano Of Ciencias Naturales Del Instituto Nacional Of Biodiversidad | Batallas R. D.,Fundacion Naturaleza Kakaram | Velalcazar D.,Pontifical Catholic University of Ecuador
Papeis Avulsos de Zoologia | Year: 2014

We describe a new species, a medium size terrestrial frog (LRC 21.7-24.9 mm in females, and 15.2-17.8 mm in males); belong to the Pristimantis genus, from the sandstone plateau of the Cordillera del Condor at southeastern Ecuador, at 2300 m high. The new species differs from its congeners in Ecuador for its distinctive coloration pattern, ochraceous brown dorsal surface with numerous yellow spots, tympanic membrane, short fingers of the front and rear legs, and exclusive microhabitats in terrestrial bromeliads. They release modulated frequency and long calls, compoused of 6-8 notes and 1 harmonic. The description of Pristimantis paquishae sp. nov., is the result of a summary herpetofauna information in one of the remote and less known sandstone plateaus in the Cordillera del Condor. © 2014, Universidade de Sao Paulo. All rights reserved.

Nunez D.,Serpentario Panki | Riera-Vite T.,Naturaleza y Cultura Internacional | Orellana F.,Naturaleza y Cultura Internacional | Brito J.,Museo Ecuatoriano Of Ciencias Naturales Del Instituto Nacional Of Biodiversidad
Check List | Year: 2015

We report the southernmost record of Cruziohyla craspedopus in Ecuador. An adult female was collected in the province of Zamora Chinchipe in southern Ecuador in the Cordillera del Condor. This record increases the previously reported altitudinal range for the species by 468 m and extends the distribution by 105 km to the south. © 2015 Check List and Authors.

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