Naslov
Morphological variation of shape and size of the Pterostichus melanarius population in intensive sugar beet production

Autori
Lemic, Darija ; Benitez, Hugo A. ; Petrak, Ivana, Graša, Željka ; Virić Gašparić, Helena, Bažok Renata

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

Izvornik
Learning about carabid habits and habitats - a continuous process in a continuously changing environment. Book of abstracts / Šerić Jelaska, Lucija ; Jelaska Sven D. - Zagreb : Hrvatsko ekološko društvo, 2015

ISBN
978-953-6202-14-0

Skup
17th European Carabidologists Meeting

Mjesto i datum
Primošten, Hrvatska, 20.09.2015. - 25.09.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
carabids ; insecticides ; sugar beet ; geometric morphometric

Sažetak
Agricultural landscapes are increasingly being simplified and undergo frequent and intense disturbances such as harvest and the input of chemicals ; these factors have been postulated as contributing to failed establishment of natural enemies and biological control programmes. The breeding of sugar beet using intensive agricultural techniques and the frequent application of pesticides has long- term negative impact on the entomofauna in the lower layer of the soil. Carabid beetles are polyphagous predators that can act as biological control agents of insect pests and weeds. The abundance of carabids in crop fields has been positively correlated with prey removal rates and with a reduction of crop damage by various agricultural pests. Agricultural practices in sugar beet production often create a polluted environment, which generates different degrees of stress in insects. Previous research suggested that degrees of phenotypic disturbances reflect the ability of an individual to overcome the effects of stress. We examined the effects of insecticide application on carabids population in the cultivation of sugar beet in different crop rotation: (i) sugar beet field ; (ii) corn field (sugar beet before 2 years) ; (iii) wheat (sugar beet before 1 year) ; (iv) oilseed rape (sugar beet before 3 years). This intensive agricultural production should generate different degrees of disturbances in the insect communities, whose effects can be quantified by geometric morphometric techniques. We analysed morphological differences in males and females of Pterostichus melanarius (Illiger, 1798) and estimated how morphological variation and sexual dimorphism may be affected by intensive agricultural production.

Izvorni jezik
Engleski

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