DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/2017 str. 49 <-- 49 --> PDF |
This finding confirms the presence of new, invasive alien species in Croatia. Expanding of species C. amoena on Croatian territory – Širenje vrste C. amoena na području Hrvatske When Nearctic C. amoena entered the former Czechoslovakia in 1975 and began to spread, it entered a Continent where wide variety of available hosts (domestic apples, English oaks, European chestnuts) were present, and where primary pest insects attack developing fruits and nuts (Band et al., 2005). C. amoena is now widespread in the chestnut forests of southern Europe (Canton Ticino in Switzerland, northern Italy, and southern Austria) where it is the only drosophilid using fallen parasitized chestnuts as a breeding substrate (Band et al., 2005). In two Croatia’s neighboring countries (Hungary and Serbia) the species was first recorded in 1980s so we can assume that the species is present on our territory for some time, but was undetected. In the coming years we can expect re finding of species in northern Croatia, since this is an area of intensive production of apples which are one of the main breeding hosts of species. Considering the fact that relatively close to this area are situated chestnut forests (Medvednica and Samobor Mountains) expansions of species in this area could also be expected. Since only two specimens of C. amoena were found in Međimurje County, its distribution in northern Croatia and other parts of the country should be examined more closely. The species is not considered to be agricultural or forestry pest, as it uses parasitized fruits and nuts of host plants as breeding sites. Work presents the first report of C. amoena in the field of Croatian territory and provides new insights into its distribution in Europe. Acknowledgements Zahvala The authors would like to thank Darija Lemić for making photography of species C. amoena and Dinka Matošević for useful discussion and advices during the writing of this work. References Literatura Band, H. T., 1988: Host shifts of Chymomyza amoena (Diptera: Drosophilidae). American Midland Naturalist, 120: 163–182 Band, H. T., 1991: Acorns as breeding sites for Chymomyza amoena (Loew) (Diptera: Drosophilidae) in Virginia and Michigan. Great Lakes Entomologist, 24: 45–50 Band, H. T., G. Bächli, R. N. Band, 2005: Behavioral constancy for interspecies dependency enables Nearctic Chymomyza amoena (Loew) (Diptera: Drosophilidae) to spread in orchards and forests in Central and Southern Europe. Biol Invasions, 7:509–530 |