20.500.12556/DKUM-85802 Morfološka variabilnost balkanskih populacij hrošča Megabruchidius dorsalis (Fåhræus, 1839) magistrsko delo Morphological variability of balkan populations of beetle Megabruchidius dorsalis (Fåhræus, 1839) Ličinka hrošča semenarja vrste Megabruchidius dorsalis je oligofagni granivor dveh vrst iz poddružine Caesalpinioideade. Vrsta izvira iz Azije, v Evropi pa je bila prvič najdena v Italiji leta 1989. Od prve najdbe se je razširila v večini vzhodne, zahodne in osrednje Evrope. Cilj naše naloge je bil izmeriti telesno variabilnost hrošča Megabruchidius dorsalis; ovrednotiti telesno variabilnost znotraj populacij in med posameznimi balkanskimi populacijami; primerjati variabilnost izmerjenih morfoloških parametrov med spoloma znotraj in med populacijami; preveriti ali obstajajo biogeografski vzorci po geografski dolžini in širini. Premerili smo 171 hroščev iz šestih lokacij na Balkanskem polotoku (Maribor, Volčji potok, Zagreb, Banjaluka, Nikšić, Tirana). Ker smo meritve opravljali na suhem materialu in se suhim osebkom glava spodviha, smo jih najprej navlažili. Po 24 urah smo osebke spreparirali, da so bili pripravljeni za fotografiranje, ter izmerili pet telesnih dimenzij (dolžina telesa, dolžina in širina pronotuma, dolžina elitre in širina eliter). Dokazana je bila prisotnost spolnega dimorfizma, saj so bili samci večji od samic na petih od šestih lokacij. Razlike v morfoloških parametrih so bile zaznane tudi med lokacijami, vedno je bil najmanjši vzorec osebkov iz Banjaluke. Izmerjeni parametri so pokazali tudi geografske vzorce, saj so se osebki večali od juga proti severu in od vzhoda proti zahodu. The larva of the seed beetle Megabruchidius dorsalis is an oligophagous granivore of two taxa from the subfamily Caesalpinioideade. The species originates from Asia and was first found in Europe in Italy in 1989. Since its first discovery, it has spread throughout most of Eastern, Western, and Central Europe. The aim of our research was to measure the body variability of beetle Megabruchidius dorsalis; to evaluate morphological variability within and between Balkan populations; to compare the variability of measured morphological parameteres between sexes within and between populations; to check if there are any biogeographical patterns along geographic longitude and latitude. We mearued 171 beetles from six locations in the Balkan (Maribor, Volčji potok, Zagreb, Banjaluka, Nikšić, and Tirana). We did measurements on dry material and because of that the beetles had their head curled towards their abdomen. We had to moist the material and after 24 hours they were prepared to be pinned, photographed, and measured (body length, length and width of pronotum, length of elytron, and width of both elytra). We showed sexual dimorphism as males were larger than females in five out of six locations suggesting sex-role reversal. Differences in morphological parameters were also detected between locations, the smallest specimens were always from Banjaluka. The measured parameter salso shower geographical patterns, as there was an increase in body size on a gradient from south to north and on a gradient from east to west. Megabruchidius dorsalis morfološka variabilnost tujerodna vrsta spolni dimorfizem Balkanski polotok Megabruchidius dorsalis morphological variability non-native species sexual dimorphism Balkan Peninsula true true false [T. Nardin] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2023-09-12 15:14:48 2023-09-26 14:43:55 2023-09-27 03:09:08 0000-00-00 00:00:00 2023 0 Maribor 0 Maribor VI, 32 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 595.76(043.2) 165825027 MAG_Nardin_Taja_2023.pdf MAG_Nardin_Taja_2023.pdf 1 EF4520D658F505B025DBE9F5E7A5ACA6 63542ae2d1ce660b792ed67ed42f121f0b6b45ca91c3a934f149e16bb992858e 629fc3bb-5172-11ee-9995-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=172052 Fakulteta za naravoslovje in matematiko 0 0 0