Se analizaron los contenidos estomacales de 245 ejemplaresdel pez Ichthyoelephas humeralis y 230 Bryconalburnus, para determinar sus hábitos alimentarios yrelaciones tróficas en el sistema hídrico la provincia deLos Ríos entre marzo diciembre 2010. utilizó elÍndice Importancia Relativa, basado métodosnumérico, peso frecuencia ocurrencia, obteniéndoseademás índices amplitud del nicho trófico Lev...

—We examined attributes of 45 roost sites used by 17 adult male evening bats (Nycticeius humeralis) in a diverse forested landscape within the Ouachita Mountains, Arkansas. Bats roosted in a diverse array of substrates, including live or dead Pinus echinata $15 cm diam at breast height (29% of roosts) and small (,10 cm) understory or midstory hardwoods (20% of roosts). Sixty-three percent of ro...

The family Pachylaelapidae Berlese, 1913 (Acari: Mesostigmata) includes a total of 16 valid and adequately described genera, namely Chaetodellus Mašán & Halliday, 2013, Elaphrolaelaps Berlese, 1910, Mirabulbus Liu & Ma, 2001, Neopachylaelaps Mašán, 2007, Olopachys Berlese, 1910, Onchodellus Berlese, 1904, Pachydellus Mašán, 2007, Pachyglobolaelaps Mašán, new genus, Pachylaelaps Berlese, 1888, P...

Describe the embryonic development of Paralabrax humeralis (Peruvian rock seabass) and present morphology its eggs yolk-sac larvae using spawned by P. broodstock in captivity. The spawning occurred naturally spontaneously early November 2018. egg is pelagic round, with a diameter 0.98 ± 0.02 mm, an oil globule, 0.2 mm. Embryonic started meroblastic cleavage, reaching first cleavage stage at 0.4...

Knowledge of the breeding biology grassland birds is important given accelerated rate transformation their habitats, which has led to noticeable population declines many species. Al...

To classify mosquito species based on common features of their habitats, samples were obtained fortnightly between June 2001-October 2003 in the subtropical province of Chaco, Argentina. Data on the type of larval habitat, nature of the habitat (artificial or natural), size, depth, location related to sunlight, distance to the neighbouring houses, type of substrate, organic material, vegetation...

The species of the genus Oreoderus are morphologically similar, and can be challenging to distinguish without dissecting the male genitalia. In this study, the Oreoderus species from China are reviewed. Three new species of Oreoderus are described: Oreoderus dasystibialis Li & Yang, sp. n., Oreoderus brevitarsus Li & Yang, sp. n. and Oreoderus oblongus Li & Yang, sp. n. A key of the male Oreode...