ABSTRACT
El objetivo de este trabajo fue conocer la fauna de escolítidos asociada al agroecosistema cacao durante el año 2007 en Tabasco, México; para ello se utilizaron trampas de alcohol etílico, trampa de luz y captura sobre sus plantas huéspedes como métodos de recolecta. Se registraron 3,192 especimenes de 34 especies pertenecientes a 18 géneros de escolítidos. Veintidós especies son registros nuevos para el Estado de Tabasco. Los géneros con mayor riqueza de especies fueron Xyleborus (6) e Hypothenemus (6). Se concluye que la fauna de escolítidos capturadas con los tres métodos de recolecta presentó una fluctuación poblacional similar a través del año de estudio. Además concluimos que aunque la trampa de alcohol etílico fue el método de captura más eficiente para la obtención de la mayor diversidad de especies es importante la utilización de los otros métodos que complementan y enriquecen la información obtenida.
The Scolytidae fauna associated to the cacao agroecosystem in Tabasco, Mexico was studied during 2007. Adult insects were captured by using ethanol and light traps, and by direct collecting in their host plants. 3,192 specimens of 34 species belonging to 18 genera of Scolytidae were collected. Twenty-two species are new records for the State of Tabasco. The genera with more species were Xyleborus (6) and Hypothenemus (6). We conclude that the Scolytidae fauna associated to the cacao agroecosystem captured with the three trap systems are similar through the year of study. We also conclude that although the ethanol traps were more efficient, obtaining the highest species diversity, the use of other methods is important.
Subject(s)
Animals , Coleoptera/physiology , Cacao/parasitology , Ecosystem , Mexico , Time FactorsABSTRACT
The male and female genitaliae of three species of the genus Heilipus Germar (H. lauri Boheman, H. pittieri Barber and H. trifasciatus Fabricius) that damage avocado fruits (Persea americana Mill.) in Mexico and Costa Rica are described and illustrated. The aedeagus, spiculum gastrale, styli of 8th sternite are different in each one of the three species studied and can be used for specific identification.
La genitalia masculina y femenina de tres especies de Heilipus Germar (H. lauri Boheman, H. pittieri Barber y H. trifasciatus) que dañan frutos de aguacate (Persea americana Mill.) en México y Costa Rica es descrita e ilustrada. El edeago, espícula gastrale, y estilos del esternitos VIII son diferentes en cada una de las tres especies estudiadas y pueden ser usadas para la identificación específica.
Subject(s)
Animals , Female , Male , Persea/parasitology , Weevils/anatomy & histology , Weevils/classification , Animal Structures/anatomy & histology , Costa Rica , MexicoABSTRACT
From August 1997 to August 1998, 334 specimens of Triatoma longipennis and 62 of T. picturata were collected in four groups of localities placed in the zone from Guadalajara, Jalisco to Tepic, Nayarit, in the West Coast of Mexico. Most T. longipennis were collected outdoors (69.2 percent) while most T. picturata (58.1 percent) were collected indoors. All collected specimens were examined for Trypanosoma cruzi infection, which was detected on 98 (29.3 percent) T. longipennis and 17 (27.4 percent) T. picturata. This study confirms the role of T. longipennis and T. picturata as some of the main T. cruzi vectors to humans in Mexico. Habitation Infestation Rate with T. longipennis was of 0.09 and with T. picturata was of 0.03 and the predominating ecotopes were pile of blocks, chicken coops, pigsties, wall crawls and beds