The mite Blattisocius mali (Oudemans, 1929), as a new phoretic associate of drosophilid fly Phortica semivirgo (Máca, 1977), is firstly reported from Hungary. The host is known as a potential vector of nematode eyeworm infestation, Thelazia callipaeda Railliet & Henry, 1910.

Seasonal plasticity in insects is often triggered by temperature and photoperiod changes. When climatic conditions become sub-optimal, insects might undergo reproductive diapause, a form of seasonal plasticity delaying the development of reproductive organs and activities. During the reproductive diapause, the cuticular hydrocarbon (CHC) profile, which covers the insect body surface, might also change to protect insects from desiccation and cold temperature. However, CHCs are often important cues and signals for mate recognition and changes in CHC composition might affect mate recognition. In the present study, we investigated the CHC profile composition and the mating success of Drosophila suzukii in 1- and 5-day-old males and females of summer and winter morphs. CHC compositions differed with age and morphs. However, no significant differences were found between the sexes of the same age and morph. The results of the behavioral assays show that summer morph pairs start to mate earlier in their life, have a shorter mating duration, and have more offspring compared to winter morph pairs. We hypothesize that CHC profiles of winter morphs are adapted to survive winter conditions, potentially at the cost of reduced mate recognition cues.

Studies of wild boar, Sus scrofa Linnaeus 1758, in urban and suburban areas of Budapest, Hungary, have indicated that these populations do not have continuous contact. Based on the assumption that the city has a discrete population, we hypothesized that the urban wild boar would differ genetically from those in suburban areas. Analysis of single-nucleotide polymorphism (SNP) data using the GeneSeek Genomic Profiler (GGP) Porcine 50 K system (Neogen, Scotland, UK) differentiated three populations: Buda (B) from the Western bank of the Danube; Buda Surrounding (BS); and Valkó (V) from the Eastern bank of the Danube. The coefficient of genetic differentiation (FST) for the B and BS populations was low. The inbreeding coefficients of the populations BS and V were close to zero, while population B had a high positive value reflecting the influence of founders and the inbreeding of the continuous urban population. The genome regions that were most differentiated between the B and BS populations were analyzed based on the FST values of the SNP markers using a mixed linear multi-locus model and BayeScan software. The most differentiated marker, WU_10.2_18_56278226, was found on chromosome 18. The surrounding region contained several candidate genes that could play important roles in adaptations related to human-induced stress. Two of these, encoding the adenylate cyclase 1 (ADCY1) and inhibin beta A chain precursor (INHBA) genes, were sequenced. While IHBA gene did not display variation, the allele distribution of the ADCY1 gene in the B population was significantly different from that of the BS population supporting the parapatric differentiation of wild boar.

The spotted-wing drosophila (SWD; Drosophila suzukii (Matsumura)) is a highly polyphagous vinegar fly, endemic to East Asia (Asplen et al., 2015). Female D. suzukii have serrated ovipositors that can puncture the fruit epidermis allowing oviposition into ripening soft-skinned and stone fruits. Both larval feeding and secondary microbial infestation cause serious fruit damage and thus massive economic losses (Knapp et al., 2021). Since the fairly recent introduction to Europe and North America, D. suzukii has emerged to be a major invasive pest of stone and soft fruits cultivation worldwide (CABI 2021).

Bu çalışmada Aydın İli’ndeki üç meyve bahçesinde Drosophilidae (Diptera) familyası türlerinin belirlenmesi ve bunların mevsimsel yoğunluklarının araştırılması amaçlanmıştır. Aynı zamanda çalışmada saptanan diğer diptera türleri de incelenmiştir. Çalışmalar Eylül 2018-Ocak 2020 tarihleri arasında içerisinde üzüm sirkesi bulunan besin cezbedici tuzaklar kullanılarak yürütülmüştür. Çalışma sonunda, tuzaklarda 11 Drosophilidae türü ve ayrıca yedi familyadan 10 farklı sinek türü belirlenmiştir. Drosophilidae türlerinden Drosophila subobscura Collin, 1936 toplam 1 964 birey olarak çalışma bahçelerinde belirlenmiş ve en çok yakalanan tür olmuştur. Bunu sayısal olarak Drosophila immigrans Sturtevant, 1921, Drosophila melanogaster Meigen, 1830, Zaprionus tuberculatus Malloch, 1932 ve Drosophila suzukii Matsumura, 1931 izlemiştir. Bahçelerde en çok drosophilid 1 836 birey ile Nisan (2019) ayında elde edilmiştir. Drosophilid türleri sayısal olarak birlikte dikkate alındığında, mevsimsel dalgalanmalar göstermiş olup, bunlardan ilk tepe noktası Nisan (2019) ayında ve ikincisi Kasım-Aralık (2019) aylarında ortaya çıkmıştır. Ancak, drosophilid türleri yaz ayları süresince oldukça düşük sayılarda tuzaklara yakalanmıştır. Çalışmada saptanan Aulacigaster falcata Papp, 1997 (Diptera: Aulacigastridae) Türkiye faunası için ilk kayıt niteliğindedir.

The invasive spotted wing drosophila (SWD -Drosophila suzukii (Matsumura, 1931)) became an important pest in several parts of Europe in less than one decade. High variations are reported by geographical regions in the phenology of the species and thus in the damages in different soft-skinned fruits. Our study aimed to compare phenological patterns of SWD in various neighbouring habitats (cherry/sour cherry and blackberry plantations, forested and built-up areas) in a hilly berry production region of Hungary (Nógrád county). The investigation consisted of operating 16 bottle traps (with vinegar and red wine) on eight spots during four years (2017-2020). The traps in cherry/sour cherry plantations caught the highest number of SWD (n=21997), which was followed by forests (n=20616), built-up areas (n=10567) and blackberry plantations (n=5035). No substantial differences were found in phenological patterns between the habitat types in any year; the catches did not reflect the lack of ripening fruits. The highest numbers of SWD imagoes were caught in September and October, while virtually no SWD individuals were caught before July. The lack of SWD catches in the first half of the year suggests that long-distance migration may play an essential role in the population dynamic of SWD by re-establishing pest populations regularly in mid-summer in Hungary.

Four genera and 12 species of drosophilid flies have been recorded during our survey provided in five regions of Georgia. Two genera: Amiota (Loew, 1862) and Gitona Meigen, 1830, and four species: A. subtusradiata Duda, Drosophila busckii Coquillett, D. kuntzei Duda, 1924 and G. distigma Meigen, 1830 are new records for fauna of Sakartvelo (Georgia).

Four genera and 12 species of drosophilid flies have been recorded during our survey in five regions of Georgia in 2021. Two genera, Amiota (Loew, 1862) and Gitona Meigen, 1830, and four species (Amiota subtusradiata Duda 1934, Drosophila busckii Coquillett 1901, D. kuntzei Duda, 1924, and Gitona distigma Meigen, 1830) represent new records for the fauna of Georgia (Sakartvelo).