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Mortality of the outbreak defoliator Ormiscodes amphimone (Lepidoptera: Saturniidae) caused by natural enemies in northwestern Patagonia, Argentina
PARITSIS,JUAN; QUINTERO,CAROLINA; KITZBERGER,THOMAS; VEBLEN,THOMAS T;
Revista chilena de historia natural , 2012, DOI: 10.4067/S0716-078X2012000100009
Abstract: outbreaks of the defoliator moth ormiscodes amphimone are occurring more frequently in numerous nothofagus forests of patagonia. however, little is known about the life history of this species including its natural enemies as mortality agents. in this work we quantified mortality by parasitoids and generalist predators at the egg, larval and pupal life stages of o. amphimone in a nothofagus pumilio (poepp. & endl.) krasser forest in northwestern patagonia. parasitism of eggs was relatively low (ca. 11 %), and we did not record significant larval predation by insectivorous birds. however, we recorded elevated mortality caused by larval parasitoids (ca. 50 % in third instar larvae) and pupal predators (ca. 75 %), which suggests that these natural enemies could play a significant role in regulating o. amphimone populations. our research is an initial step towards understanding the influence of natural enemies on o. amphimone population dynamics.
Temperature and foliage quality affect performance of the outbreak defoliator Ormiscodes amphimone (F.) (Lepidoptera: Saturniidae) in northwestern Patagonia, Argentina
PARITSIS,JUAN; VEBLEN,THOMAS T;
Revista chilena de historia natural , 2010, DOI: 10.4067/S0716-078X2010000400012
Abstract: in the temperate forests of chile and argentina the phytophagous moth ormiscodes amphimone (f.) causes severe defoliation on the southern beech tree nothofagus pumilio (poepp. & endl.) krasser. the recent increase in defoliation frequency in some áreas appears to be influenced by a warmer climate. to evalúate the effects of temperature and the spatial heterogeneity of foliage quality on the performance and relative consumption rate of o. amphimone in northwestern patagonia, argentina we conducted a factorial experiment. larval performance was measured as relative growth rate, developmental time, larval survival, and pupal weight. larvae of o. amphimone were reared under two constant temperature regimes (15 °c and 20 °c) and fed with two n. pumilio foliage types (from a mesic and from a xeric site). larvae at the higher temperature and fed with leaves from the mesic site showed higher performance and consumption rate than larvae in the other treatments. higher temperature and mesic foliage had positive effects on o. amphimone's relative growth rate, development time and relative consumption rate. however, pupal weight was positively influenced by mesic foliage but not by temperature, and larval survival did not show significant differences among treatments. our results preliminarily suggest that o. amphimone performance and consumption rate may increase under higher temperature conditions, especially in the mesic portions of the precipitation gradient. however, these findings should be carefully interpreted as further research is necessary to assess the influence of higher temperatures on the foliar quality of n. pumilio.
Temperature and foliage quality affect performance of the outbreak defoliator Ormiscodes amphimone (F.) (Lepidoptera: Saturniidae) in northwestern Patagonia, Argentina La temperatura y la calidad del follaje afectan el desempe o del defoliador epidémico Ormiscodes amphimone (F.) (Lepidoptera: Saturniidae) en el noroeste de la Patagonia argentina
JUAN PARITSIS,THOMAS T VEBLEN
Revista chilena de historia natural , 2010,
Abstract: In the temperate forests of Chile and Argentina the phytophagous moth Ormiscodes amphimone (F.) causes severe defoliation on the southern beech tree Nothofagus pumilio (Poepp. & Endl.) Krasser. The recent increase in defoliation frequency in some áreas appears to be influenced by a warmer climate. To evalúate the effects of temperature and the spatial heterogeneity of foliage quality on the performance and relative consumption rate of O. amphimone in northwestern Patagonia, Argentina we conducted a factorial experiment. Larval performance was measured as relative growth rate, developmental time, larval survival, and pupal weight. Larvae of O. amphimone were reared under two constant temperature regimes (15 °C and 20 °C) and fed with two N. pumilio foliage types (from a mesic and from a xeric site). Larvae at the higher temperature and fed with leaves from the mesic site showed higher performance and consumption rate than larvae in the other treatments. Higher temperature and mesic foliage had positive effects on O. amphimone's relative growth rate, development time and relative consumption rate. However, pupal weight was positively influenced by mesic foliage but not by temperature, and larval survival did not show significant differences among treatments. Our results preliminarily suggest that O. amphimone performance and consumption rate may increase under higher temperature conditions, especially in the mesic portions of the precipitation gradient. However, these findings should be carefully interpreted as further research is necessary to assess the influence of higher temperatures on the foliar quality of N. pumilio. En los bosques templados de Chile y Argentina la polilla fitófaga Ormiscodes amphimone (F.) genera severas defoliaciones sobre la lenga (Nothofagus pumilio [Poepp. & Endl.] Krasser). El reciente aumento en la frecuencia de defoliación en algunas áreas de la Patagonia parecería estar influenciada por un clima más cálido. Para evaluar los efectos de la temperatura y la heterogeneidad espacial en la calidad del follaje sobre el desempe o y la tasa de consumo relativo del defoliador O. amphimone en el noroeste de la Patagonia argentina llevamos a cabo un experimento factorial. El desempe o larval fue medido como tasa de crecimiento relativo, tiempo de desarrollo, supervivencia larval y peso de las pupas. Las larvas de O. amphimone fueron criadas bajo dos temperaturas constantes (15 °C y 20 °C) y alimentadas con dos tipos de follaje de N. pumilio (de un sitio mésico y de uno xérico). Las larvas criadas a la temperatura más alta y alimentadas
New host-plant records for the defoliator Ormiscodes amphimone (Fabricius) (Lepidoptera: Saturniidae)
Paritsis, Juan;Elgueta, Mario;Quintero, Carolina;Veblen, Thomas T;
Neotropical Entomology , 2010, DOI: 10.1590/S1519-566X2010000600032
Abstract: ormiscodes amphimone (fabricius) is a phytophagous moth species known to severely defoliate woody species in chile and argentina. here we document new records of o. amphimonehost associations emphasizing the role of nothofagus pumilio as its primary host in our study area. this new record for argentina is highly significant given the economic importance of n. pumilio as a timber resource and the potential of o. amphimone to generate extensive outbreaks.
Ultraestructura de los huevos de dos mariposas nocturnas de Chile: Ormiscodes socialis y Polythysana cinerascens (Lepidoptera: Saturniidae)
Benítez-Mora,Alfonso; Olivares,Tania S;
Revista de Biología Tropical , 2006,
Abstract: egg ultrastructure in two chilean moths: ormiscodes socialis y polythysana cinerascens (lepidoptera: saturniidae). the structure and ultra-structure of the eggs from ormiscodes socialis (feisthamel) and polythysana cinerascens (philippi) are described, considering shape, size, coloring when recently laid, oviposition type nd aeropiles (quantity, distribution and proportion) in the micropilar area, among others. the ultra-structure is shown for primary cells, secondary cells, aeropiles and icropiles. a comparative table of the eggs of these species is presented and includes the previously described eggs of adetomeris microphthalma (philippi). myoschilos oblonga ruiz y pavón (santalaceae) is recorded as a new host for p. cinerascens. rev. biol. trop. 54 (4): 1085-1091. epub 2006 dec. 15.
Ultraestructura de los huevos de dos mariposas nocturnas de Chile: Ormiscodes socialis y Polythysana cinerascens (Lepidoptera: Saturniidae)  [cached]
Alfonso Benítez-Mora,Tania S Olivares
Revista de Biología Tropical , 2006,
Abstract: Se describe la estructura y ultraestructura de los huevos de las especies Ormiscodes socialis (Feisthamel) y Polythysana cinerascens (Philippi), considerando la forma, tama o, color, tipo de ovipostura, y aeropilas (cantidad, distribución y proporción) en el área micropilar, entre otros. La ultraestructura es mostrada a través de las celdas primarias, celdas secundarias, aeropilas y micropilas; además se incluye a la especie ya descrita Adetomeris microphthalma (Philippi) y se confecciona un cuadro comparativo para los huevos de estas especies. Se registra como nuevo hospedero de P. Cinerascens a Myoschilos oblonga Ruiz y Pavón (Santalaceae). Egg ultrastructure in two Chilean moths: Ormiscodes socialis y Polythysana cinerascens (Lepidoptera: Saturniidae). The structure and ultra-structure of the eggs from Ormiscodes socialis (Feisthamel) and Polythysana cinerascens (Philippi) are described, considering shape, size, coloring when recently laid, oviposition type nd aeropiles (quantity, distribution and proportion) in the micropilar area, among others. The ultra-structure is shown for primary cells, secondary cells, aeropiles and icropiles. A comparative table of the eggs of these species is presented and includes the previously described eggs of Adetomeris microphthalma (Philippi). Myoschilos oblonga Ruiz y Pavón (Santalaceae) is recorded as a new host for P. cinerascens. Rev. Biol. Trop. 54 (4): 1085-1091. Epub 2006 Dec. 15.
CATALOGO CRITICO E ILUSTRADO DE LAS ESPECIES DE LA FAMILIA SATURNIIDAE EN CHILE (LEPIDOPTERA: SATURNIIDAE) ILLUSTRATED CATALOGUE OF SATURNIIDAE' SPECIES IN CHILE (LEPIDOPTERA: SATURNIIDAE)  [cached]
Andrés O. Angulo,Claude Lemaire,Tania S. Olivares
Gayana (Concepción) , 2004,
Abstract: Se revisan 19 especies de Saturniidae en Chile, distribuidas en 7 géneros: Adetomeris Michener, Ormiscodes Blanchard, Polythysana Walker, Cinommata Butler, Cercophana Felder, Microdulia Jordan, Neocercophana Izquierdo. Para cada especie se entrega una ficha de reconocimiento que incluyen sinónimos, datos biológicos, morfológicos, hospederos, referencias, distribución geográfica conocida, período de vuelo y fotografias de machos y hembras. Para la obtención de material se utilizaron ejemplares provenientes del Museo de Historia Natural de París, Francia (MNHN) y las Colecciones Científicas de la Universidad de Concepción, Chile (UCCC) Nineteen species of the saturnidan genera Adetomeris Michener, Ormiscodes Blanchard, Polythysana Walker, Cinommata Butler, Cercophana Felder, Microdulia Jordan, Neocercophana Izquierdo are revised and a checklist with them is elaborated. Each species is analysed in terms of synonymy, biological and morphological data, hosts, flight period, geographical distribution and also by mean male and female photographs. Material used has been obtained from the scientific collections of the Museé d' Histoire Naturelle, Paris (MNHN), and from the Colecciones Cientificas de la Universidad de Concepción, Chile (UCCC)
Distributional records of Brahmaeidae and Saturniidae species from Laos (Lepidoptera: Brahmaeidae, Saturniidae)  [cached]
L. Racheli,T. Racheli
SHILAP Revista de Lepidopterología , 2006,
Abstract: Se da la distribución de un sola especie de Brahmaeidae y de tres de Saturniidae de Laos. Estas citas mejoran la reciente lista de especies presentes en este país.
The Saturniidae fauna of Napo Province, Ecuador: an overview (Lepidoptera: Saturniidae)  [cached]
L. Racheli,T. Racheli
SHILAP Revista de Lepidopterología , 2006,
Abstract: En este trabajo, se ha completado un inventario actualizado de 196 taxa de Saturniidae (excepto Oxyteninae y Cercophaninae), registrados para la provincia de Napo, Ecuador. Una revisión de todas las citas de distribución disponibles en la literatura y las citas adicionales procedentes de las expediciones realizadas en esta provincia, se han utilizado para actualizar la presente lista. Se ha resumido la información de carácter general sobre la mayoría de las taxa encontradas en esta provincia. Además, se da un análisis preliminar de cada especie citada a lo largo de un transecto altitudinal en esta provincia.
An update checklist of the Saturniidae of Ecuador. Part I: Hemileucinae (Lepidoptera: Saturniidae)  [cached]
L. Racheli,T. Racheli
SHILAP Revista de Lepidopterología , 2005,
Abstract: En este trabajo, se citan un total de 199 taxa pertenecientes a la subfamilia Hemileucinae (Saturniidae) para Ecuador. Se incluyen todos las citas disponibles en la bibliografía examinada y nuevas citas adicionales del material revisado en colecciones privadas y públicas. Para cada taxón, se da una lista de todos los datos provinciales. Para algunas especies poco comunes o poco conocidas, se dan detalles adicionales sobre su distribución y se aportan datos más detallados por algunas especies. Se discuten las propuestas taxonómicas en curso para algunos grupos de especies. Además, se describe por primera vez la hembra de Meroleuca (Meroleucoides) albomaculata (Dognin, 1916) y se cita por primera vez para Perú a Molippa placida (Schaus, 1921).
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