| Abstract [eng] |
The aim of this study was to investigate biology, taxonomy and phylogenetic relationships of the aphid genus Cryptomyzus distributed in Lithuania. The state of knowledge about the representatives of this genus in the world and in Lithuania is discussed and methods used in faunal, life cycle, morphometric, cytogenetic, molecular and phylologenetic studies are described in the dissertation. Results of the study presented in this work were obtained by analyzing collection stored at the Department of Zoology (Faculty of Natural Sciences, Vilnius University) and field material collected by the author and by investigating life cycles of seven aphid species of the genus Cryptomyzus (C. alboapicalis, C. galeopsidis, C. korschelti, C. leonuri, C. maudamanti, C. ribis ir C. ulmeri) in Lithuania. Aphids with known peculiarities of biology were used for morphometric, cytogenetic and molecular studies. Performed phylogenetic analysis showed that phylogenetic reconstructions based both on partial DNA sequences of two genes and morphological and biological characters did not contradict with each other. Identification keys to apterous and alate viviparous females, oviparae and males are given in the dissertation together with measurements of various morphs belonging to seven studied species. The dissertation contains Introduction, Review of the literature (3 subchapters), Methods of the study (6 subchapters), Results of the study (8 subchapters), Conclusions, References (83 positions), List of publications and Supplemental material. The dissertation is written in Lithuanian with the summary in English. The dissertation and supplemental material consist of 172 pages, with 130 pages of the main text with 26 tables and 39 figures. The supplemental material contains 14 tables. |
