|
|
|
|
|
Vera,Marcela; Aguilera,Alfonso; Rebolledo,Ramón. |
Coccinellids have been used, throughout the world, in biological control programs of agriculture pests. In Chile this family has been studied by various authors, which addresses issues such as biology, predatory activity and distribution in herbaceous species, shrubs and trees, but their situation in blueberries, where there is an abundance of species, is unknown Coccinellid beetles were counted visually on two blueberry orchards, under organic and conventional management. This study was conducted at the Maquehue Experiment Station, in the central valley of "La Araucanía Región" in southern Chile, from September 2007 through May 2008 and was divided into two periods: from September 2007 through February 2008 with visual counts only on the foliage of the... |
Tipo: Journal article |
Palavras-chave: Blueberries; Coccinellids; Eriopis connexa; Eriopis eschscholtzii; Hyperaspis sphaeridioides. |
Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200012 |
| |
|
|
Sarmento,Renato Almeida; Pallini,Angelo; Venzon,Madelaine; Souza,Og Francisco Fonseca de; Molina-Rugama,Adrián José; Oliveira,Claudinei Lima de. |
This work evaluated the functional response of adult females of Eriopis connexa to different densities of Macrosiphum euphorbiae and Tetranychus evansi. When preying upon aphids, E. connexa presented a sigmoidal functional response (Type III). This behavior, however, changed drastically to an exponential (Type II) functional response, when mites (T. evansi), rather than aphids, were offered to E. connexa. Such different patterns showed that this coccinellid needed to adopt distinct strategies according to the kind of prey available. Since predators were believed to be able to regulate prey populations only when adopting Type III functional response. E. connexa would be a good candidate for a biological control agent of M. euphorbiae, but would not suppress... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Coccinellids; Aphids; Mites; Lycopersicon esculentum Mill. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100014 |
| |
|
|
Villegas,Cinthya M; Verdugo,Jaime A; Grez,Audrey A; Tapia,Jaime; Lavandero,Blas. |
C.M. Villegas, J.A. Verdugo, A.A. Grez, J. Tapia, and B. Lavandero. 2013. Movement between crops and weeds: temporal refuges for aphidophagous insects in Central Chile. Cien. Inv. Agr. 40(2): 317-326. Crop edges have significant effects on populations of natural enemies, acting as source or sink habitats during the growing season. Previous observations have shown that coccinellid species are associated with thistle (Sylibum marianum (L.) Gaertn), a common exotic weed in the central valley of Chile. To determine whether thistles growing at crop edges act as a putative refuge for natural enemies, the seasonal relative abundance of aphidophagous coccinellids was estimated at 0, 10 and 25 m from the edges of three alfalfa fields. Mark-recapture studies were... |
Tipo: Journal article |
Palavras-chave: Alfalfa; Coccinellids; Refuges; Rubidium; Thistle. |
Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200007 |
| |
|
|
FRANCESENA,NATALIA; ROCCA,MARGARITA; RIZZO,ESTEFANÍA; ARNEODO,JOEL D.; GRECO,NANCY M.. |
Abstract Laboratory trials were performed to determine the impact of three Neotropical predatory coccinellids (Cycloneda sanguinea, Eriopis connexa and Coleomegilla quadrifasciata) and a minute pirate bug (Orius insidiosus) on Chaetosiphon fragaefolii, an important strawberry aphid pest. The predation on C. fragaefolii nymphs and adults, as well as the time to the first attack of all predators were compared with predation on Aphis gossypii. Predator preferences for prey and aphid defensive behavior were also evaluated. Moreover, the effect of coccinellids on C. fragaefolii population growth was assessed in experimental greenhouse conditions. The predation rate varied among predators, being significantly lower for O. insidiosus than for the coccinellids.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior; Biological control; Chaetosiphon fragaefolii; Fragaria x ananassa; Predation rate; Coccinellids. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700869 |
| |
|
|
|