hippodamia convergens control biológico

Los escarabajos, hemípteros, moscas, crisopas, y las avispas de comportamiento depredatorio se alimentan de varios insectos o ácaros plagas. Adults were active, mated readily, and were fecund. Es poco probable que la liberación ofrezca un control satisfactorio de plagas en la mayoría de las situaciones. 15 0 obj <> endobj xref 15 45 0000000016 00000 n Biological Control 39: 193–200. Por ejemplo, los Aphidiinae (una subfamilia de las braconidos) atacan a los áfidos. 0000003313 00000 n Convergent lady beetles have been recorded as predators of asparagus beetle eggs and larvae and potato psyllids. The larval stages of many predators are the preferred biological control agent, and eggs and larvae produced by adults are placed directly in the field. Publ. In addition, even in those cases where parasitism reached substantial levels, the potential for transfer of the vein greening pathogen was high because T. triozae attacks third or fourth instar nymphs and feeding by second or third instars can introduce the pathogen into the plant. If aphids are scarce, beetles and larvae may feed on small insect larvae, insect eggs, mites and, occasionally, nectar, and honeydew secreted by aphids and other sucking insects. They have a prominent black and white pattern behind the head, and black spots on red forewings. 7411. En el mercado existen algunos proveedores de esta especie. This is one of the best known and most common American lady beetles and is found from southern Canada to South America. We use cookies to help provide and enhance our service and tailor content and ads. Subsequently, Attallah and Newsom (1966) reared eight generations of C. maculata on a defined diet of casein, sucrose, wheat germ, soybean hydrolysate, glycogen, butter fat, a liver factor, corn oil, brewer's yeast, dextrose, cotton leaf extract (supplying carotenoids and sterols), ascorbate, inorganic salts, vitamins, and agar. When offered Ephestia eggs, the convergent lady beetle Hippodamia convergens Guerin-Meneville took a few days longer to complete development than when fed aphids, Schizaphis graminum (Rondani), and Brachycaudus schwartzi Börner (Kato et al., 1999). Las poblaciones de algunos áfidos, orugas, ácaros y otros invertebrados son, algunas veces, drásticamente reducidas por patógenos que se dan de manera natural, usualmente en condiciones de una prolongada humedad alta o poblaciones densas de plagas. Overwintered adult sites were preconditioned by exposing them to fly-in screen cages and providing them with water before release onto aphid-infested potted plants and were found useful in nurseries and glasshouses (Flint et al., 1995). Researchers have presented factitious prey/food to predators in various forms: live, irradiated, frozen, or lyophilized. Pests of Landscape Trees and Shrubs: An Integrated Pest Management Guide. However, Johnson (1971) examined this species and found limited control of B. cockerelli. From: Handbook of Biological Control, 1999, John L. Capinera, in Handbook of Vegetable Pests, 2001. 0000009677 00000 n The culture methods were later refined and a diet of fresh yeast and glucose supported larval development (Szumkowski, 1961a, 1961b). An improved rearing method was later described by Okada and Matsuka (1973) and adapted by Matsuka et al. 0000002460 00000 n In some lady beetles migration extends to several kilometers. Los taquínidos adultos muchas veces se parecen a las moscas comunes. Releases of such "harvested" convergent lady beetles could be a waste of time, money, and beetles. Despite several unsuccessful attempts, a few successful examples gave hope for aphid biocontrol practitioners. The diet contained corn, soy, milk, casein and soy hydrolysates, wheat germ oil, sucrose, yeast, honey, tryptophan, cystine, B vitamins, and other water-soluble growth factors. Las especies de catarinas Hippodamia convergens Guerin-Meneville y Coleomegilla maculata son buenos depredadores. Es importante que los administradores de paisajes reconozcan a los enemigos naturales importados y los conserven siempre que sea posible. When the aggregations begin to break up, as early as late January, the butterflies move to early sprouting milkweeds in the Coast Ranges and breed there. Despite their abundance, however, the lady beetles were numerous and effective predators only after the aphid populations attained high and damaging densities. This is the species sold by insectaries for aphid control. Momias de áfidos y avispas parasíticas (Lysiphlebus testaceipes). Contact UC IPM, Agriculture and Natural Resources, University of California, © 2020 Regents of the University of California Good Fruit Grower, Yakima, WA. Sixteen generations of H. axyridis and three generations of Menochilus sexmaculatus (Fabricius) were cultured in vitro. A mean of 4.75 parasitoids develops in each parasitized beetle larva. If Stethorus eggs, immature stages, and adults are on many leaves they should be able to clean up the pest population in a few days (Hoy, 2011). 0000007192 00000 n The fourth instar measures about 1.5 mm long, the thorax is greatly expanded laterally, the entire body is covered with spines, and the wing pads extend to about the second abdominal segment. (Coleoptera: Coccinellidae) The species is available commercially in North America, but because of the overwintering habits of non-reproductive adults, released beetles tend to quickly disperse from their release site. Adults of Chilocorus rubidus Hope, Scymnus hilaris Motschulsky, S. otohime Kamiya, Vibidia duodecimguttata Poda and Stethorus japonicus Kamiya could also be maintained on the diet but did not lay eggs (Matsuka et al., 1972).

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