Morfološka varijabilnost populacija šimširovog moljca u Republici Hrvatskoj

master's thesis

• Title (english): Morphological variability of the box tree moth population in the Republic of Croatia
• Author: Patricija Majcenić
• Mentor: Darija Lemić (mentor)
• Committee member: Darija Lemić (predsjednik povjerenstva)
• Committee member: Ivana Pajač Živković (član povjerenstva)
• Committee member: Maja Čačija (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Agricultural Zoology); Zagreb
• Defense date and country: 2022-09-22, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Šimširov moljac (Cydalima perspectalis (Walker, 1859)) invazivna je vrsta koja je prirodno rasprostranjena u Aziji. U Europi je vrsta prvi puta utvrđena 2007. godine u Njemačkoj i Nizozemskoj. U Republici Hrvatskoj je prvi puta zabilježena 2012. godine u Istri, dok su štete zabilježene 2013. godine. Smatra se da je vrsta u Europu, pa tako i Hrvatsku unesena zajedno sa sadnicama biljaka šimšira (Buxus sp.). Štetu čine gusjenice svih razvojnih stadije. Gusjenice svojom ishranom uzrokuju potpunu defolijaciju biljaka, a u konačnici može doći i do smrti same biljke. Vrstu je moguće prepoznati po svilenim zaprecima i nitima, a kod intenzivnog napada cijela biljka je njima prekrivena i ostaje bez lišća. Cilj ovog rada je utvrditi morfološku varijabilnost populacija šimširovog moljca s područja Hrvatske te procijeniti njegov invazivni karakter, mogućnost leta i daljnjeg širenja uporabom metoda geometrijske morfometrije, odnosno analize oblika krila. Za potrebe istraživanje prikupljeno je ukupno 269 leptira s različitih lokacija Hrvatske. Preparirano je 222 gornja krila i 201 donje krilo mužjaka te 190 gornjih i 178 donjih krila ženki. U procjeni varijabilnosti veličine i oblika gornjih krila korišteno je 14 specifičnih točaka, a donjih krila 15 specifičnih točaka. Analize koje su korištene u ovom radu su analiza glavnih komponenti (PCA), kanonijska diskriminantna analiza (CVA). Primjenom standardnih analiza geometrijske morfometrije na krilima šimširovog moljca dobiveni su rezultati u kojima je jasno vidljiva razlika u oblicima krila između kopnenih i obalnih populacija, dok spolni dimorfizam nije utvrđen.

Abstract (english)

The box tree moth (Cydalima perspectalis (Walker, 1859)) is an invasive species naturally distributed in Asia. In Europe, the species was first identified in 2007 in Germany and the Netherlands. In the Republic of Croatia, it was first recorded in 2012 in Istria, while damages were recorded in 2013. It is believed that the species was brought to Europe, including Croatia, together with the seedlings of box tree plants (Buxus sp.). Caterpillars of all developmental stages cause damage. The caterpillars cause complete defoliation of the plants with their diet, and ultimately the death of the plant itself may occur. It is possible to recognize the species by its silk barriers and threads, and in the case of an intense attack, the entire plant is covered with them and remains without leaves. The aim of this work is to determine the morphological variability of box tree moth populations from Croatia and to assess its invasive character, the possibility of flight and further spread using the methods of geometric morphometry, i.e. the analysis of wing shape. A total of 269 butterflies from different locations in Croatia were collected for the purposes of the research. 222 upper wings and 201 lower wings of males, and 190 upper and 178 lower wings of females were prepared. In the assessment of the variability of the size and shape of the upper wings, 14 specific points were used, and 15 specific points were used for the lower wings. The analyzes used in this work are principal component analysis (PCA), canonical discriminant analysis (CVA). Applying standard analyzes of geometric morphometry on the wings of the boxwood moth, results were obtained in which a clearly visible difference in wing shapes between terrestrial and coastal populations, while sexual dimorphism was not established.

• Keywords: šimširov moljac; geometrijska morfometrija; invazivnost
• Keywords (english): box tree moth; geometric morphometry; invasiveness
• Language: croatian
• URN:NBN: urn:nbn:hr:204:818125
• Study programme: Title: Phytomedicine; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2022-09-28 11:53:14