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Clave taxonómica para larvas de las familias del orden Trichoptera (Insecta) de Costa Rica

Biol. Trop. (Int. J. Trop. Biol 10/2006; 54:273-286.

ABSTRACT A taxonomic key to the families of caddisfly larvae (Insecta: Trichoptera) of Costa Rica. The use of aquatic macroinvertebrates as bioindicators for water quality and environmental degradation of aquatic ecosystems has become more and more important in Costa Rica during the past years. For this reason, taxonomic and ecological investigations on the different groups of bioindicators, such as aquatic insects, is gaining more and more importance and can be considered as indispensable in the use of indices for biomonitoring. One of the most abundant and diverse groups of aquatic insects are the caddisflies, with their larvae living in a great variety of the country's varied aquatic habitats. Therefore, in this work a taxonomic key for the identification of the families of Trichoptera larvae of Costa Rica is presented. Additionally, commentaries on the taxonomic diversity and ecology of each family are included, in order to facilitate the use of this important group of bioindicators. Such publications also help fill the general need for taxonomic keys to many groups of insects from tropical countries. Rev. Biol. Trop. 54 (Suppl. 1): 273-286. Epub 2006 Sept. 30. Los tricópteros pertenecen a los órdenes de insectos primeramente acuáticos, lo que quiere decir que la totalidad de sus especies dependen del medio acuático para su desa-rrollo. El orden está relacionado con los lepidópteros y los adultos asemejan pequeñas polillas; sin embargo, sus alas están cubiertas de pelos en lugar de escamas y sus piezas bucales no forman una proboscis, si no más bien se encuentran bastante reducidas. El tamaño de los adultos varía entre 2 y 50 mm, y la mayoría son de colores oscuros (café-negros), aunque las especies de algunos géne-ros poseen colores claros y pueden presentar distintos patrones de manchas. Las larvas viven en diversos ambientes acuáticos y la gran mayoría de las especies habita en ríos y quebradas de aguas limpias y bien oxigenadas. Con ayuda de una seda que producen en una glándula bucal, construyen refugios y estuches o casitas portátiles, los Recibido 10-iii-2006. Corregido 02-vii-2006. Aceptado 30-viii-2006.

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    • "; Posada-García & Roldán-Pérez, 2003; Roldán, 2003 y Springer, 2006 y 2010. "
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    • "F. Rizo-Patrón V. et al. / Ecological Indicators 29 (2013) 68–78 71 family according to taxonomic keys (Pennak, 1978, 1989; Roldán, 1988, 2003; Springer, 2006, 2008). Specimens were deposited in the Palo Verde Biological Station and the Aquatic Entomology Collection of the Zoological Museum at the University of Costa Rica. "
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    ABSTRACT: The purpose of this study was to compare how aquatic macroinvertebrates are affected by certain management practices and agrochemicals in organic and conventional rice cultivations (treatments) in northwestern of Costa Rica. We sampled macroinvertebrates in both treatments, at the water entrances (irrigation) and exits (drainage) during two cycles (8 months total) of rice field cultivation. We employed a water quality index using macroinvertebrates (BMWP/CR) as bioindicators in both management treatments. Insect family mean (P = 0.0019) and species mean richness (P = 0.0340) were greater in the organic vs. the conventional treatments as well as at the entrances rather than their exits. Both macroinvertebrates mean abundance (P = 0.0281) and insects mean abundances (P = 0.0065) were greater at the organic vs. the conventional treatments. The water quality index (BMWP/CR) was greater in the organic treatment at the entrance (124) comparing with the exit (72), and also at the conventional entrance (92) vs. the exit (66), thus showing that the management practices affected the macroinvertebrate community. The organic treatment showed the settlement of a greater number of families and species of macroinvertebrates both in general and in those considered sensitive to pollution than in the conventional treatment. This sensitive group of macroinvertebrates (Baetis sp., Fallceon sp., Leptohyphes sp., Tricorythodes sp., Farrodes sp., Phyllogomphoides sp., Hydroptila sp., Mayatrichia sp., Neotrichia sp., Oxyethira sp., Nectopsyche sp.1, Nectopsyche sp.2, Oecetis sp.) can be used as a bioindicators of water quality in these agroecosystems. On the contrary, more macroinvertebrates resistant to pollution were found in the conventional compared to the organic treatment, showing that aquatic macroinvertebrates respond to the type of management/products that are applied to the rice field.
    Ecological Indicators 06/2013; 29:68–78. DOI:10.1016/j.ecolind.2012.12.013 · 3.23 Impact Factor
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    • "Flint 1970, 1971, 1973, 1974a, 1983, Flint & Bueno-Soria 1982, Monson et al. 1988, Holzenthal 1988b, Holzenthal & Harris 1989, Muñoz-Quesada & Holzenthal 1997, Holzenthal & Andersen 2004, Blahnik & Holzenthal 2006, Rueda-Martín 2006). A first key (in spanish) to the larval stages of Costa Rican caddisfly families was published by Springer (2006), although for the Costa Rican fauna less then 10% of the larvae have been associated with their adults. "
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    ABSTRACT: Costa Rica hosts an extraordinarily high biodiversity and is among the best studied neotropical countries. Insects represent the most diverse group of organisms, not only in terrestrial but also in aquatic, especially freshwater, habitats. Among the most diverse aquatic insect orders are the Trichoptera, Diptera and Coleoptera; although Ephemeroptera can locally also be very abundant and diverse. In Costa Rica, the taxonomi-cally best known orders of aquatic insects are the caddisflies (Trichoptera), dragonflies (Odonata) and stoneflies (Plecoptera) and within the Dipterans, groups of medical importance have received special attention. The interest in aquatic insects has been constantly growing in Costa Rica over the past 10 years, but scientific publications are widely dispersed and often difficult to locate. Due to the importance of aquatic organisms in environmental impact studies and biomonitoring of freshwater habitats, there is an urgent need for comprehensive studies and publications that are locally available. In this sense, the present paper tries to give an overview on the state of knowledge and the literature published to date on the aquatic insects of Costa Rica, taking in account taxonomic, biological and ecological studies. Rev. Biol. Trop. 56 (Suppl. 4): 273-295. Epub 2009 June 30.
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