Mimikrija orhideja roda Ophrys kao strategija u privlačenju oprašivača

undergraduate thesis

• Title (english): Mimicry of orchids within the genus Ophrys as a pollinator attraction strategy
• Author: Lea Kanjuh
• Mentor: Antun Alegro (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2024-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Orhideje (Orchidaceae), još zvane i kaćunovke, druga su najveća porodica unutar carstva biljaka (Plantae). Ime porodice dolazi od grčke riječi „ὄρχις" koja označava specifičan oblik podzemnog gomolja karakterističnog za neke vrste ove porodice. Prve orhideje su se pojavile još u kredi, a do danas su uspjele kolonizirati gotovo cijeli svijet prilagođavajući se okolini svojom morfologijom i anatomijom. Specifične prilagodbe posebno se primjećuju unutar roda kokica (Ophrys) čije su vrste razvile... More zanimljiv oblik mimikrije i potaknule pseudokopulaciju u oprašivača. Orhideje su promjenom morfologije cvijeta, obojenosti i specifičnim kemijskim signalima razvile mehanizam kojim varaju svoje oprašivače. Ovaj rad daje detaljan pregled prilagodbi unutar orhideja roda Ophrys te kemijsku i morfološku pozadinu u privlačenju oprašivača. U Hrvatskoj su sve vrste iz porodice orhideja zaštićene Pravilnikom o strogo zaštićenim vrstama, a rod Ophrys uključuje i neke vrste koje su posebno osjetljive na promjene uzrokovane antropogenim utjecajima te su upisane u IUCN-ovu crvenu knjigu kao ugrožene i osjetljive. Međutim, raznim programima očuvanja i međunarodnim propisima, njihove se populacije mogu ponovo obnoviti, a time i populacije oprašivača koje su vezane uz njih. Less

Abstract (english)

Orchids (Orchidaceae) are the second largest family within the kingdom of plants (Plantae). The family is named after the Greek word „ὄρχις“ which indicates the specific shape of the subterranean tuberous roots that occurs within some species of this familiy. The first orchids appeared back in the Cretaceous, and until today they have managed to colonize almost the entire world, adapting to the environment with their special morphology and anatomy. Specific adaptations are especially... More noticeable within the genus of bee orchids (Ophrys), whose species have developed an interesting form of mimicry and induced pseudocopulation in pollinators. Orchids have developed a mechanism by which they deceive their pollinators by changing the morphology of flowers, their coloring and specific chemical signals. This paper provides a detailed overview of the adaptations within the orchid genus Ophrys and the chemical and morphological background in pollinator attraction. In Croatia, all species from the orchid family are protected by the Ordinance on Strictly Protected Species, while the genus Ophrys also includes some species that are particularly sensitive to changes caused by anthropogenic influences and are listed in the IUCN Red Book as endangered and sensitive. However, with various conservation programs and international regulations, their populations can be rebuilt, and thus the pollinator populations that are associated with them. Less

• Keywords: kokica; pseudokopulacija; morfološka prilagodba; feromonski signali; ugroženost
• Keywords (english): bee orchid; pseudocopulation; morphological adaptation; pheromone signals; endangerment
• Language: croatian
• URN:NBN: urn:nbn:hr:217:981596
• Study programme: Title: Ecology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-03-27 15:09:17