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Agriculture, Vol. 21 No. 1, 2015.

Original scientific paper

https://doi.org/10.18047/poljo.21.1.9

RHAGOLETIS COMPLETA (DIPTERA; TEPHRITIDAE) DISTRIBUTION, FLIGHT DYNAMICS AND INFLUENCE ON WALNUT KERNEL QUALITY IN THE CONTINENTAL CROATIA

Božena Barić orcid id orcid.org/0000-0002-0708-4257 ; University of Zagreb, Faculty of Agriculture, Zagreb, Croatia
Ivana Pajač Živković orcid id orcid.org/0000-0002-0775-7327 ; University of Zagreb, Faculty of Agriculture, Zagreb, Croatia
Dinka Matošević orcid id orcid.org/0000-0001-7380-688X ; Croatian Forest Research Institute, Jastrebarsko, Croatia
Milorad Šubić ; Croatian Agricultural Advisory Service, Čakovec, Croatia,
Erzsébet Voigt ; Research Institute for Fruitgrowing and Ornamentals, Budapest, Hungary
Miklós Tóth ; - Plant Protection Institute, Budapest, Hungary

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Abstract

Walnut husk fly (WHF), Rhagoletis completa Cresson 1929 is an invasive species spreading quickly and damaging walnuts in Croatia and neighbouring countries. We researched distribution of this pest in the continental part of Croatia, flight dynamics in Međimurje County and its influence on quality of walnut kernels. CSALOMON®PALz traps were used for monitoring the spread and flight dynamics of R. completa. Weight and the protein content of kernels and the presence of mycotoxin contamination were measured. Walnut husk fly was found in six counties (Istria County: pest reconfirmation, Zagreb County, The City of Zagreb, Varaždin County, Međimurje County and Koprivnica-Križevci County). The presence of the fly was not confirmed on one site in Koprivnica-Križevci County (locality Ferdinandovac) and in the eastern part of Croatia (Vukovar-Srijem County: Vinkovci locality). The flight dynamics showed rapid increase in number of adults only a year after the introduction into new area. The weight of infested kernels was 5.81% lower compared to not infested. Protein content was 14.04% in infested kernels and 17.31% in not infested kernels. There was no difference in mycotoxins levels. Additional researches on mycotoxin levels in stored nuts, ovipositional preferences of walnut husk fly and protection measures against this pest are suggested.

Keywords

walnut husk fly; damages; infested kernels; mycotoxin contamination; nutritional value; spread

Hrčak ID:

139936

URI

https://hrcak.srce.hr/139936

Publication date:

8.6.2015.

Article data in other languages: croatian

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