Examinando por Materia "Saprophagous insects"

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  • Miniatura
    PublicaciónAcceso abierto
    Fauna carrion associated to domestic pig (Sus scrofa) in a coastal environment in Chubut, Argentina.
    (Universidad del Valle, 2017-12-30) Armani, Ana Paula; Dahinten, Silvia; Centeno, Nestor; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle
    This is the first study of cadaveric decomposition taking place in a riverside environment of the NW of Chubut province, Argentina. The specific composition, abundance, diversity of the carrion fauna associated with a porcine experimental model was determined. Seasonal samplings were performed for three consecutive years (2010- 2012) using three domestic pigs for each sample, placed in wooden cages covered with wire mesh. Daily, insects were collected in the body, under and around it. There were identified and characterized the five stages of bodies’ decomposition of experimental pigs. Were collected 6,325 individuals adult and immature of 63 species belonging to 18 families distributed among the Diptera, Coleoptera and Hymenoptera orders. During the warm season, was determined the seasonality of Compsomyiops fulvicrura (Diptera: Calliphoridae) and, the dominance of Calliphora vicina (Diptera: Calliphoridae) in the cold season. Relevant information on the saprophagous insects in the riverside environment Chubut, which is helpful in estimating the time of death in forensic cases in the study region.
  • Miniatura
    PublicaciónAcceso abierto
    Seasonal variation of the epigeal coleopteran diversity in the Laguna Carén (Santiago, Chile).
    (Universidad del Valle, 2018-12-31) Alvarado Orellana, Alexandra; Huerta Fuentes, Amanda; Palma Muñoz, Álvaro; Rodríguez Tobar, Sebastián; Sociedad Colombiana de Entomología - Socolen; Universidad del Valle; Montoya Lerma, James
    The seasonal variation of epigeal coleopteran diversity and physical-chemical parameters associated to water quality in the Laguna Carén (Santiago, Chile) was evaluated. Different physical-chemical parameters of lagoon water were measured in spring and summer at four random sampling stations, representative of the vegetable coverages. The epigeal coleopterans of the shore were collected by means of interception traps (n = 40), installed at random. It was estimated the abundance and richness of the coleopterans by sampling station and season. In addition, they were separated into trophic guilds: phytophagous, predatory and saprophagous. The differences in abundance and richness were evaluated with nonparametric Kruskal-Wallis tests, followed by Dunn (sampling station) and Mann-Whitney (season) tests. The same statistical procedure was applied to trophic guilds. The ensemble of species of epigeal coleopteran was represented by 19 species (14 natives) from eight families, constitutes the first record of insects in the lagoon. The richness of epigeal coleopteran was significantly higher in spring; while abundance was in summer, concurring with the sampling stations with higher coverages. The availability of food and shelter for epigeal beetles would be influenced mainly by anthropic factors, which lead to a greater degree of fragmentation and alteration of the habitat. The information generated can serve as a basis for future research on bioindicators in vulnerable wetlands in the Mediterranean region.