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Response of coccinellid community to the dimethoate application in olive groves...

In this work we assessed the effects of the application of dimethoate on the coccinellid community. The field work was carried out on a weekly basis, in two different olive groves, from April to November of 2002 and 2003 and captured coccinellids were identified to species level. Principal response curves (PRC) method was used to analyse the effect of the dimethoate application on the abundance of coccinellid s...

Seasonal synchrony between Saissetia oleae and coccinellid species in Portugues...

The black scale, Saissetia oleae (Olivier) (Hemiptera Coccidae), is one of the main olive pests and coccinellids are among the principal predators that feed on scales. The relationships between the temporal abundance of five common coccinellid species [Chilocorus bipustulatus L., Scymnus subvillosus (Goeze), Scymnus mediterraneus Iablokoff-Khnzorian, Scymnus interruptus (Goeze), Rhyzobius chrysomeloides (Herbst...

Phenotypic variation of Fucus ceranoides, F. spiralis and F. vesiculosus in a t...

Brown algae includes several species of Fucus, reported both in the tidal and intertidal zones of cold and temperate regions. Environmental parameters induce wide biological variability in intertidal algae, manifested by alterations at several levels, and this has lead to the failure of some reports to discriminate between closely related taxa, particularly Fucus species. As the genus Fucus is widely represente...

Voracity of coccinellid species on different phenological stages of the olive p...

Coccinellidae are well known predators in agroecosystems. In olive groves they may exert control against scales, such as the black scale, Saissetia oleae (Olivier, 1791). Laboratory studies on the consumption of three phenological stages (eggs, first and second instar nymphs) of S. oleae by four coccinellid species (Chilocorus bipustulatus, Scymnus (Pullus) subvillosus, Scymnus (Mimopullus) mediterraneus and Sc...

Coccinellids as potential predators of Saissetia oleae (Olivier).

Efeito do sistema de protecção da cultura na comunidade de artrópodes da copa d...

Na copa da oliveira existe uma vasta comunidade de artrópodes com diferentes e importantes funções neste agro-ecossistema. O sistema de protecção da cultura pode ter influencia na abundância e diversidade destas comunidades. a presente estudo teve por objectivo investigar 0 efeito do sistema de protecção da cultura na comunidade de artrópodes da copa da oliveira (Olea europea L. ).

Coccinelídeos como potenciais predadores da cochonilha-negra, Saissetia oleae (...

A cochonilha-negra, Saisseti oleae (Olivier, 1791) e m dos principais inimigos do olival em muitas regiões. Entre o complexo de auxiliares desta cultura, destacam-se, pela sua relativa abundância, as coccinelideos dos quais diversas espécies exercem predação sobre cochonilhas. Contudo, a informação disponível sobre o papel exercido par estes organismos sobre as populações de cochonilha-negra é escassa.

Resposta da comunidade de invertebrados em dois olivais com diferentes sistemas...

Coccinellidae communities: diversity and dynamics in organic and integrated oli...

Effect of Endosulfan and Parathion on Energy Reserves and Physiological Paramet...

The in vivo effects of parathion and endosulfan on the isopod Porcellio dilatatus were investigated. Feeding parameters (food consumption and assimilation rates), growth, and energy reserves (glycogen, lipid, and protein contents) of pesticide-exposed isopods were compared with those of control animals. Isopods were exposed to a wide range of concentrations of parathion or endosulfan (0.1, 1, 10, 25, 50, 100, 2...