Naslov
Scale insects (Hemiptera: Coccoidea) and their natural enemies in Croatian olive growes

Autori
Masten Milek, Tatjana ; Bjeliš, Mario ; Šimala, Mladen

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
4th European Meeting of the IOBC/wprs working Group Integrated Protection of Olive Crops / Quesada Moraga, Enrique - Cordoba : Junta de Andalucia - Consejera de Agricultura y Pesca, 2009, 98-98

Skup
4th European Meeting of the IOBC/wprs working Group Integrated Protection of Olive Crops

Mjesto i datum
Córdoba, Španjolska, 01.06.2009. - 04.06.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
scale insects, natural enemies, Croatian olive growes

Sažetak
The insect fauna of olive is very rich, and in the Mediterranean basin alone, there are more then 60 species known to live on the olive tree. About 15-20 of them are permanent or occasional pests, and approximately 10 of those, belong to the scale insects (Pellizzari, 1997). The scale insects can devastate olive fruits and olive trees. They thrive on nearly all parts of host plants, sometimes settle under bark, and cause a variety of plant deformities. Some of them excrete large amount of honeydew and by the subsequent development of sooty mould fungi, they severely reduce photosynthesis and transpiration. They disperse passively with the aid of wind, water, soil, humans and domestic and wild animals. Global trade has been a major factor in their spread worldwide. Faunistic investigation of the scale insects of olive trees and their natural enemies in Croatia were carried out in 6 coastal counties over a 4 year period (2005 – 2008) by visual inspections of potentially infested host plants with the help of a magnifying lens of 10x magnification, collecting of host plant material infested with scale insects in plastic bags, labelling each sample with collection data, observation of field characteristics of collected specimens under the dissecting stereo microscope, slide mounting, microscopic identification on the basis of morphological characteristics according to relevant keys and marking the localities of finding according to UTM system. Inspections have resulted in 9 identified scale species, namely from family Asterolecanidae: Pollinia pollini (A. Costa, 1857) ; Coccidae: Filippia follicularis (Targioni Tozzetti, 1867), Lichtensia viburni Signoret, 1873, Saissetia oleae (Olivier, 1791) ; Diaspididae: Epidiaspis leperii (Signoret, 1869), Lepidosaphes flava (Signoret, 1870), Lepidosaphes ulmi (Linnaeus, 1758), Parlatoria oleae (Colvée, 1880) and Pseudaulacaspis pentagona (Targioni Tozzetti, 1886). Species L. flava is a newly recorded species in Croatia. Within faunistic investigation, beside scale insects on olive trees, 7 predator species from family Coccinelidae were established (Adalia decempunctata L., Chilocorus bipustulatus L., Chilocorus renipustulatus S., Coccinella septempunctata L.), Exochomus quadripusulatus L., Scymnus frontalis F. and Scymnus subvillosus G. In the body of scale insects on olive trees, 7 different parasitic wasps from superfamily Chalcidoidea were found, namely Aphytis proclia Walker, Blastothrix hungarica Erdös, Coccophagus lycimnia Walker, Coccophagus palaeolecanii Yasnosh, Metaphycus Mercet sp., Pachyneuron muscarum Linnaeus i Scutellista caerulea Fonscolombe. They belong in families Aphelinidae, Encyrtidae and Pteromalidae.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA