Depredación de aves sobre larvas de Rhyacionia buoliana (Schiff.) (Lepidoptera: Tortricidae) en plantaciones jóvenes de Pinus radiata D. Don en el sur de Chile

Simeone, Alejandro; Valencia, Juan Carlos; Schlatter, Roberto; Lanfranco, Dolly; Ide, Sandra

doi:10.4206/bosque.1997.v18n2-07

Cited by 7 publications

(7 citation statements)

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“…Land covers at landscape scale are indicated with (L) expected to document a clear relationship between granivorous abundance and percentage cover of low stratified crops, but our results did not support our hypothesis. Interestingly, instead, some granivores such as Blackchinned siskin and Rufous-collared sparrow were mainly associated with highly stratified crops such as orchards, although it has been reported that both species can behave as facultative, changing their diet according to the availability of the resources, including insects [84][85][86]. This could be related with weed plants that were growing and seeding in the inter row of the orchards, a variable that was not measured in this study, but may be relevant for future research.…”

Section: Species Associationsmentioning

confidence: 99%

Agricultural landscapes as habitat for birds in central Chile

Muñoz‐Sáez

Perez‐Quezada

Estades

2017

Rev. Chil. de Hist. Nat.

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Background: Understanding the role of agroecosystems as habitat for wildlife is crucial for long-term conservation planning, as different crop stratification and landscape elements can influence bird communities, which are also affected by seasonality. The goal of our study was to determine how agricultural landscapes varying in land cover characteristics affect bird richness and abundance. Bird surveys were conducted at 110 locations within agricultural landscapes in central Chile. The surveyed areas were characterized by land cover at two scales (50 and 500 m radii) through direct observation and photo-interpretation, during winter and spring seasons. Generalized Linear Mixed Models were used to evaluate the effects of different agricultural land covers on bird species and communities. Results: Our results show that birds were more abundant during winter, in particular for insectivorous and granivorous birds, and that bird species richness was significantly increased due to cover provided by hedgerows at the plot scale. Conclusions: We found that abundance of some bird species in agroecosystems in central Chile was higher in winter than in spring, and that overall bird richness was favored by structural diversity including non-crop structures such as hedgerows, which thus may be relevant for improving bird conservation management in temperate agroecosystems. Our results suggest that native vegetation proximity and area may affect seasonal changes in bird communities at larger scales, relationships which warrant further study.

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Section: Species Associationsmentioning

confidence: 99%

Agricultural landscapes as habitat for birds in central Chile

Muñoz‐Sáez

Perez‐Quezada

Estades

2017

Rev. Chil. de Hist. Nat.

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“…Falco femoralis exclusively feeds on birds and insects (Jiménez 1993, Jaksic et al 1993, 1996), depending on the food supply (Figueroa and Corales 2005). Falco peregrinus is considered an opportunist (McNutt 1981) and is a top predator of granivore birds (Marquet et al 1998), as well as an avid insect eater, again depending on supply (Simeone et al 1997). The feeding habits of Falco sparverius are known in detail; it is classified as a predator of insects, reptiles (Goodall et al 1951, Jaksic et al 1982, Jaksic and Ostfeld 1983, Marquet et al 1998, Jaksic and Feinsinger 1991, Simeone et al 1997), and small mammals (Jaksic 1986), and the supply of the latter increases species abundance (Jaksic et al 1992, Jaksic et al 1993, 1996).…”

Section: Resultsmentioning

confidence: 99%

“…Falco peregrinus is considered an opportunist (McNutt 1981) and is a top predator of granivore birds (Marquet et al 1998), as well as an avid insect eater, again depending on supply (Simeone et al 1997). The feeding habits of Falco sparverius are known in detail; it is classified as a predator of insects, reptiles (Goodall et al 1951, Jaksic et al 1982, Jaksic and Ostfeld 1983, Marquet et al 1998, Jaksic and Feinsinger 1991, Simeone et al 1997), and small mammals (Jaksic 1986), and the supply of the latter increases species abundance (Jaksic et al 1992, Jaksic et al 1993, 1996). Falco sparverius is capable of changing its diet following the seasons (Figueroa and Corales 2002, Mella 2002, 2005) and geographic location (Ellis et al 2002).…”

Section: Resultsmentioning

confidence: 99%

A reassessment on the state of knowledge of Chilean Falconidae in the last hundred years

Soto-Saravia

Ruiz

Benítez-Mora

et al. 2017

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Eight species of falcons (Falconidae) have been recorded in Chile. To date, all relevant studies considered birds of prey in general, with no specific focus on this family. Based on a comprehensive review of the literature, an updated report is presented on the state of knowledge of falcons in Chile. This data set comprises a total of 165 studies published from 1915 to 2015. Scientific productivity was lowest in 1945-1955 and highest in 2005-2015, with a steady increase since 1985. However, the focus of research in Chile is biased towards two species: Milvago chimango and Falco sparverius. Two administrative regions, Santiago Metropolitan Region and Araucanía, were the most studied whereas Arica, Tarapacá, and Antofagasta regions accounted for fewer than 1% of the studies. Faunistic studies (including abundance) were the most common research topic. It is suggested that the lack of knowledge regarding species in the genus Phalcoboenus may negatively affect the conservation status of these species, and believed that the lack of preference for certain research topics, such as systematics and natural history, are the result of historical factors including the decrease of field biology and perhaps a biased interest of the researchers. Finally, this review highlights the paucity of information on falcons and provides a framework for directing future research.

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“…(Fringilidae), que consume larvas de los últimos estadíos, debido a que en esos momentos se observan fácilmente los grumos de resina producidos por la planta en respuesta al ataque de las larvas. La tasa máxima de consumo por C. barbata fue de 21-45 larvas por día (Simeone et al 1997). Cabe también indicar el efecto de los arácnidos de familias Thomisidae y Salticidae en las poblaciones de R. buoliana; depredadores activos encontrados incluso dentro de los brotes o utilizando el pupario de R. buoliana para incubar sus huevos.…”

Section: Parasitoides De Adultos No Hay Evidencia De Parasitoides Quunclassified

“…Además de estas familias, cabe destacar el efecto de insectos coleóp-teros como Coccinellidae y Carabidae (Lanfranco et al 1998). Sin embargo, aparte de la estimación de C. barbata, se desconoce el efecto real de los depredadores, ya que además de no tener un registro numérico, suelen ser muy generalistas (Simeone et al 1997).…”

Section: Parasitoides De Adultos No Hay Evidencia De Parasitoides Quunclassified

El complejo de parasitoides de la polilla del brote del pino en Chile: pasado, presente y posible escenario futuro

Sanz

Leverton

2010

Bosque (Valdivia)

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El complejo de parasitoides de la polilla del brote del pino en Chile: pasado, presente y posible escenario futuroThe parasitoid complex of the pine shoot moth: past, present and probable future scenario SUMMARYThe classical biological control, or the introduction and release of different exotic biocontrol agents to control introduced insect pests, is one of the most currently used methods for decreasing insect pest populations. In Chile the use of these methods for "the European pine shoot moth", Rhyacionia buoliana (Lepidoptera: Tortricidae), was a pioneer decision that supposed the accomplishment of forest management and the implementation of research that permitted the generation of action plans. Today, twenty years after the introduction of Orgilus obscurator (Hymenoptera: Braconidae) as the main parasitoid for control of this pest, the current situation is more complex than expected, with the presence of other native parasitoids and hyperparasitoids. In this work the evolution of the pine shoot moth control in Chile since the detection of the pest in 1985, the beginning of the biological control exerted by O. obscurator, and the present and probable future of this control, will be analyzed.Key words: classical biological control, European pine shoot moth, Orgilus obscurator. RESUMENEl control biológico clásico o la introducción y liberación de biocontroladores exóticos es una de las técnicas más utilizadas en la actualidad para reducir las poblaciones de insectos plaga introducidas. En Chile, el uso de esta técnica fue una decisión pionera para controlar la polilla del brote del pino, Rhyacionia buoliana (Lepidoptera: Tortricidae), que supuso la ejecución de medidas de manejo forestal y la generación de investigación que permitió implementar planes de acción. A veinte años de la introducción de Orgilus obscurator (Hymenoptera: Braconidae) como parasitoide principal de esta plaga, el escenario es más complejo de lo esperado, con la aparición de nuevos parasitoides nativos e hiperparasitoides introducidos. En este trabajo se analiza la evolución que el control biológico de R. buoliana ha tenido en Chile desde el momento de su detección en 1985, el comienzo del control biológico ejercido por O. obscurator, y el presente y posible futuro de dicho control.Palabras clave: control biológico clásico, polilla del brote, Orgilus obscurator.

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Depredación de aves sobre larvas de Rhyacionia buoliana (Schiff.) (Lepidoptera: Tortricidae) en plantaciones jóvenes de Pinus radiata D. Don en el sur de Chile

Cited by 7 publications

References 0 publications

Agricultural landscapes as habitat for birds in central Chile

Agricultural landscapes as habitat for birds in central Chile

A reassessment on the state of knowledge of Chilean Falconidae in the last hundred years

El complejo de parasitoides de la polilla del brote del pino en Chile: pasado, presente y posible escenario futuro

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