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            <front>

                <journal-meta>
                                                                <journal-id>yyufbed</journal-id>
            <journal-title-group>
                                                                                    <journal-title>Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi</journal-title>
            </journal-title-group>
                            <issn pub-type="ppub">1300-5413</issn>
                                        <issn pub-type="epub">2667-467X</issn>
                                                                                            <publisher>
                    <publisher-name>Van Yüzüncü Yıl Üniversitesi</publisher-name>
                </publisher>
                    </journal-meta>
                <article-meta>
                                        <article-id pub-id-type="doi">10.53433/yyufbed.1789906</article-id>
                                                                <article-categories>
                                            <subj-group  xml:lang="en">
                                                            <subject>Ecology (Other)</subject>
                                                            <subject>Invertebrate Biology</subject>
                                                    </subj-group>
                                            <subj-group  xml:lang="tr">
                                                            <subject>Ekoloji (Diğer)</subject>
                                                            <subject>Omurgasız Biyolojisi</subject>
                                                    </subj-group>
                                    </article-categories>
                                                                                                                                                        <title-group>
                                                                                                                        <trans-title-group xml:lang="tr">
                                    <trans-title>Alman Hamamböceği’nin (Blatella germanica L.) Alpha-cypermethrin’e Karşı Direnç Düzeyinin Belirlenmesi</trans-title>
                                </trans-title-group>
                                                                                                                                                                                                <article-title>The Resistance Level of the German Cockroach (Blatella germanica L.) to Alpha-cypermethrin</article-title>
                                                                                                    </title-group>
            
                                                    <contrib-group content-type="authors">
                                                                        <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0000-0002-9862-9629</contrib-id>
                                                                <name>
                                    <surname>Arıkan</surname>
                                    <given-names>Kalender</given-names>
                                </name>
                                                                    <aff>HACETTEPE ÜNİVERSİTESİ</aff>
                                                            </contrib>
                                                    <contrib contrib-type="author">
                                                                    <contrib-id contrib-id-type="orcid">
                                        https://orcid.org/0009-0000-7669-4289</contrib-id>
                                                                <name>
                                    <surname>Armut</surname>
                                    <given-names>Sevim</given-names>
                                </name>
                                                                    <aff>HACETTEPE ÜNİVERSİTESİ</aff>
                                                            </contrib>
                                                                                </contrib-group>
                        
                                        <pub-date pub-type="pub" iso-8601-date="20260429">
                    <day>04</day>
                    <month>29</month>
                    <year>2026</year>
                </pub-date>
                                        <volume>31</volume>
                                                    <fpage>189</fpage>
                                        <lpage>202</lpage>
                        
                        <history>
                                    <date date-type="received" iso-8601-date="20250923">
                        <day>09</day>
                        <month>23</month>
                        <year>2025</year>
                    </date>
                                                    <date date-type="accepted" iso-8601-date="20260126">
                        <day>01</day>
                        <month>26</month>
                        <year>2026</year>
                    </date>
                            </history>
                                        <permissions>
                    <copyright-statement>Copyright © 1995, Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi</copyright-statement>
                    <copyright-year>1995</copyright-year>
                    <copyright-holder>Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi</copyright-holder>
                </permissions>
            
                                                                                                <trans-abstract xml:lang="tr">
                            <p>Bu çalışma, Alman hamamböceği (Blattella germanica) popülasyonlarının alpha-cypermethrin’e karşı direnç düzeylerini belirlemeyi amaçlamaktadır. Çalışmada, biri insektisit maruziyeti olmayan laboratuvar kökenli duyarlı popülasyon ile Ankara’nın Altındağ ve Çankaya ilçelerinden toplanan yerel popülasyonlardan alınan örnekler kullanılmıştır. Hamamböceklerine topikal uygulama yöntemiyle farklı dozlarda (1–100 ng/µL) alpha-cypermethrin uygulanmış, bireyler knock-down (baygınlık) ve ölüm oranları açısından 30. dakika ile 24 saat boyunca gözlemlenmiştir. Sonuçlar, duyarlı popülasyonun düşük dozlarda hızlı knock-down ve ölüm yanıtı verdiğini; buna karşın Çankaya ve özellikle Altındağ popülasyonlarının daha yüksek direnç sergilediğini ortaya koymuştur. Probit analizine göre, duyarlı popülasyonun LD₅₀ değeri 1.64 ng/µL iken, Çankaya ve Altındağ popülasyonlarının LD₅₀ değerleri sırasıyla 16.32 ng/µL ve 28.43 ng/µL olarak hesaplanmıştır. Bu bulgular, B. germanica popülasyonlarında alpha-cypermethrin’e karşı belirgin bir direnç gelişimi olduğunu ve farklı yerel popülasyonlar arasında direnç düzeylerinin değişiklik gösterdiğini ortaya koymaktadır. Çalışma, vektör kontrolünde insektisit rotasyonu ve entegre mücadele yaklaşımlarının önemine işaret etmektedir.</p></trans-abstract>
                                                                                                                                    <abstract><p>This study aims to determine the resistance levels of German cockroach (Blattella germanica) populations to alpha-cypermethrin. A susceptible laboratory-origin population with no insecticide exposure and local populations collected from the Altındağ and Çankaya districts of Ankara were used. Alpha-cypermethrin was applied to the cockroaches at different doses (1–100 ng/µL) by topical application, and individuals were monitored for knock-down and mortality rates between 30 min and 24 h post-treatment. The results revealed that the susceptible population exhibited rapid knock-down and mortality responses at low doses, whereas the Çankaya and especially the Altındağ populations exhibited increased resistance. According to probit analysis, the LD₅₀ value of the susceptible population was calculated as 1.64 ng/, while the LD₅₀ values for the Çankaya and Altındağ populations were 16.32 ng/µL and 28.43 ng/µL, respectively. These findings indicate a significant development of resistance to alpha-cypermethrin in B. germanica populations and reveal variation in resistance levels among different local populations. The study emphasizes the importance of insecticide rotation and integrated control strategies in pest management programs.</p></abstract>
                                                            
            
                                                                                        <kwd-group>
                                                    <kwd>Vector control</kwd>
                                                    <kwd>  Cockroach</kwd>
                                                    <kwd>  Pyrethroid</kwd>
                                                    <kwd>  probit</kwd>
                                                    <kwd>  Resistance</kwd>
                                                    <kwd>  Ankara</kwd>
                                            </kwd-group>
                            
                                                <kwd-group xml:lang="tr">
                                                    <kwd>Vektör kontrolü</kwd>
                                                    <kwd>  Hamamböceği</kwd>
                                                    <kwd>  Piretroid</kwd>
                                                    <kwd>  Probit</kwd>
                                                    <kwd>  Direnç</kwd>
                                                    <kwd>  Ankara</kwd>
                                            </kwd-group>
                                                                                                                                    <funding-group specific-use="FundRef">
                    <award-group>
                                                    <funding-source>
                                <named-content content-type="funder_name">None</named-content>
                            </funding-source>
                                                                            <award-id>YOK</award-id>
                                            </award-group>
                </funding-group>
                                </article-meta>
    </front>
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