Biotic mortality factors in field populations of Tuta Absoluta Meyrick (Lepidoptera: Gelechidae) in South Bulgaria

Autor:	Eleonora Deleva, Slavimira Draganova, Vili Harizanova
Rok vydání:	2016
Předmět:	predators biology Ecology fungi food and beverages entomopathogenic fungi mortality rate General Medicine biology.organism_classification parasitoids Field (geography) Lepidoptera genitalia parasitic diseases Mortality factors Tuta absoluta tomato leafminer
Zdroj:	Agricultural Sciences
ISSN:	2367-5772 1313-6577
Popis:	The tomato leafminer Tuta absoluta Meyrick is an invasive species for Europe, North Africa and the Middle East, attacking cultivated and wild Solanaceae plants. After it was recorded in Bulgaria in 2009 it spread in all tomato growing regions of the country. The aim of the study was to establish the biotic mortality factors, influencing the field population of the leaf miner in the region of Plovdiv (South Bulgaria). The mortality, caused by predators, parasitoids and pathogens varried from 12.59% in August 2011 to 45.65% in September 2013. During the years the mortality increased from 19.38% in 2011 to 31.57% in 2013. Three insect species (Macrolophus pygmaeus, Nabis sp. and Neochysocharis formosa), and one mite species (Trombidium sp.) were found to feed on the eggs and larvae of the moth. A fungal pathogen (B. bassiana) was isolated from the larvae. For the larval parasitoid N. formosa the tomato leafminer is a new host in Bulgaria. In laboratory tests aimed at evaluating the consumption abilities of the most numerous predator M. Pygmaeus, the nymph killed an average of 40.75 ± 1.61 eggs or 2.25 ± 0.45 larvae of the leaf miner per day, and the adult – respectively 75.88 ± 1.55 and 4.88 ± 0.61.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8827d1a54224a1c46e62a89fbc997c1f https://doi.org/10.22620/agrisci.2016.19.009 Zobrazit plný text záznamu