Konstantin Zdraveski, Sasho Trajanovski, Teodora Trichkova, Rumen Tomov & Hristina Kalcheva — Joint ESENIAS and DIAS Scientific Conference and 9th ESENIAS Workshop Species, Ecosystems and Areas of Conservation Concern under Threat from the Invasive Alien Species: Outcomes — 507-515. [
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Ilknur Yildiz & Ali Muzaffer Feyzioglu — Spatial and Seasonal Variation of the New Invader Oithona davisae (Ferrari F. D. & Orsi, 1984) (Cyclopoida: Oithonidae) in the Southeast Black Sea — 517-524. [
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Naime Arslan, Belgin Camur-Elipek & Deniz Mercan — Distribution of the Ponto-Caspian Species Pontogammarus robustoides (Sars, 1894) (Amphipoda) in the Inland Waters of Turkey — 525-530. [
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Oxana Munjiu, Igori Subernetkii, Nadejda Andreev, Nadejda Railean & Ion Toderas — Distribution and Characteristics of the Invasive Alien Species Sinanodonta woodiana (Lea, 1834) (Bivalvia: Unionidae) in the Republic of Moldova — 531-538. [
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Paata Vadachkoria, Andrei Tregubov, Guranda Makharadze, Eteri Mikashavidze & Madona Varshanidze — Distribution and Quantitative Characteristics of Four Invasive Alien Species off the Black Sea Coast of Georgia — 539-544. [
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Bella Japoshvili, Tatsiana Lipinskaya, Helen Gajduchenko, Aleh Sinchuk, Ani Bikashvili & Levan Mumladze — First DNA-based Records of New Alien Freshwater Species in the Republic of Georgia — 545-551. [
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Deniz Innal & Daniela Giannetto — Occurrence of Gambusia holbrooki Girard, 1859 (Poeciliidae) in Four Mediterranean River Estuaries of Turkey, Nursery Habitats of Several Native and Threatened Species — 553-560. [
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Lale Gencoglu, Serife Gulsun Kirankaya & F. Guler Ekmekci — Age and Growth of Marine and Translocated Freshwater Populations of Atherina boyeri Risso, 1810 (Atherinidae) in Turkey — 561-570. [
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Yurii V. Kornilev, Simeon Lukanov, Alexander Pulev, Miroslav Slavchev, Kostadin Andonov, Emiliya Vacheva, Vladislav Vergilov, Vladimir Mladenov, Ralitsa Georgieva & Georgi Popgeorgiev — The Alien Pond Slider Trachemys scripta (Thunberg in Schoepff, 1792) in Bulgaria: Future Prospects for an Established and Reproducing Invasive Species — 571-581. [
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Florina Stanescu, Laurentiu Rozylowicz, Marian Tudor & Dan Cogalniceanu — Alien Vertebrates in Romania - A Review — 583-595. [
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Roxana Ciceoi & Minodora Gutue — Updated List of Host Plants of Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) with Reference to Romania — 597-610. [
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Milcho Todorov, Marian Kenderov, Ivan Botev, Zdravko Hubenov & Teodora Trichkova — First Records of Pectinatella magnifica (Leidy, 1851) (Bryozoa: Plumatellida: Pectinatellidae) in the Bulgarian Shoreline Zone of the Danube River — 611-617. [
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Ana Atanackovic, Katarina Zoric, Jelena Tomovic, Marija Ilic, Bojana Tubic, Bela Csanyi & Momir Paunovic — Range Extension of the Ponto-Caspian polycheate Manayunkia caspica Annenkova, 1929 (Annelida: Fabriciidae) in the Danube River — 619-622. [
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Katarina S. Zoric, Ana D. Atanackovic, Marija D. Ilic, Bela Csanyi & Momir M. Paunovic — The Spiny-cheek Crayfish Faxonius limosus (Rafinesque, 1817) (Decapoda: Cambaridae) Invades New Areas in Serbian Inland Waters — 623-627. [
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Vesna D. Djikanovic, Stefan B. Skoric & Branislav M. Mickovic — Diet of the Round Goby Neogobius melanostomus (Pallas, 1811) (Gobiidae) in the Danube and Velika Morava Rivers in Serbia — 629-634. [
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Sanja Radonjic & Snjezana Hrncic — Overview of the Arthropod Pests of Citrus Plants in Montenegro — 635-648. [
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Constantina Chireceanu, Marioara Bosoi, Teodor Podrumar, Mihu Ghica, Andrei Teodoru, Andrei Chiriloaie-Palade & Roxana Zaharia — Invasive Insect Species Detected on Grapevines in Romania during 2016-2019 and First Record of Erasmoneura vulnerata (Fitch, 1851) (Hemiptera: Cicadellidae) — 649-659. [
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Ana-Cristina Fatu, Gabriel Cardas, Constantin Ciornei & Ana-Maria Andrei — Experimental Field Application of Beauveria bassiana (Bals.) Vuill. for Control of the Invasive Sawfly Aproceros leucopoda Takeuki, 1939 (Hymenoptera: Argidae) in Romania — 661-666. [
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Deniz Innal, Berat Tocan, Iskender Gulle, Duygu Ceren Caglan, Muzaffer Dugel & Dursun Avsar — Diversity and Distribution of the Ichthyofauna in the Goksu River Estuary, Turkey — 667-676. [
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Hristina Kalcheva, Anita Kiss, Maria Dinka, Arpad Berczik, Roumen Kalchev & Edit Agoston-Szabo — Zooplankton Diversity and Correlations with Biotic and Abiotic Factors in Water Bodies in the Middle Danube River Basin, Hungary — 677-686. [
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Aleksandra Konjevic — First Records of the Brown Marmorated Stink Bug Halyomorpha halys (Stal, 1855) (Hemiptera: Pentatomidae) in Republic of North Macedonia — 687-690. [
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Rumen Tomov — First Record of the Japanese Grape Leafhopper Arboridia kakogawana (Matsumura, 1932) (Homoptera: Cicadellidae, Erythroneurini) in Bulgaria — 691-695. [
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Rumen Tomov — First Records of the Walnut Shield Bearer Coptodisca lucifluella (Clemens, 1860) (Lepidoptera: Heliozelidae) in Bulgaria — 697-700. [
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