Morfometrijska raznolikost dobrog dupina (Tursiops truncatus Montagu, 1821) u Jadranskom moru

master's thesis

• Title (english): Morphometric diversity of the Common Bottlenose dolphin (Tursiops truncatus, Montagu, 1821) in the Adriatic Sea
• Author: Marino Mitrović-Matić
• Mentor: Martina Đuras (mentor)
• Mentor: Petar Kružić (mentor)
• Committee member: Petar Kružić (predsjednik povjerenstva)
• Committee member: Jasna Lajtner (član povjerenstva)
• Committee member: Božena Mitić (član povjerenstva)
• Committee member: Ana Galov (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2021-12-09, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Dobri dupin predstavlja jedinog široko rasprostranjenog morskog sisavca u Jadranskome moru, a cilj ovog istraživanja je prikazati standardne morfometrijske vrijednosti za oba spola i njihove promjene u ovisnosti o dobi u ove zakonom zaštićene životinjske vrste. Analizirane su vanjske tjelesne mjere 256 dobra dupina, koji su pronađeni uginuli od 1990. do 2021. godine u hrvatskom dijelu Jadranskoga mora. Dob dobrih dupina određena je brojanjem godišnjih zona prirasta u dentinu. Mužjaci dobrog dupina iz Jadranskoga mora dosežu asimptotsku vrijednost duljine tijela u iznosu 292,5 cm u dobi od 13 godina, a ženke 281,5 cm pri dobi od 12 godina. Asimptotska vrijednost tjelesne mase iznosi 242,2 kg u mužjaka i dosežu je u dobi od 18 godina, a u ženki iznosi 207,2 kg i dosežu je u dobi od 14,5 godina. Spolni dimorfizam dokazan je u tjelesnoj masi i 12 vanjskih tjelesnih mjera, koje su, izuzev jedne, veće u mužjaka. Potvrđeno je da u Jadranskome moru postoji samo jedan morfološki tip vrste Tursiops truncatus koji je s obzirom na prosječnu duljinu tijela najsličniji populaciji dobrih dupina iz mora oko istočne Australije.

Abstract (english)

The Common Bottlenose dolphin is the only widespread marine mammal in the Adriatic Sea, and the aim of this study is to show standard morphometric values for both sexes and their changes depending on age in these legally protected species. External body measurements of 256 bottlenose dolphins, which were found dead from 1990 to 2021 in the Croatian part of the Adriatic Sea, were analyzed. The age of bottlenose dolphins was determined by counting the annual growth layers in the dentin. Male bottlenose dolphins reached an asymptotic value of body length of 292.5 cm at the age of 13, and females 281,5 cm at the age of 12. The asymptotic value of body weight is 242,2 kg in males and they reached it at the age of 18, and in females it is 207,2 kg and they reached it at the age of 14,5. Sexual dimorphism was shown in body mass and 12 external body measures, which are greater in males, except one. There is only one morphological type of Tursiops truncatus in the Adriatic Sea which, given its average body length, is most similar to the bottlenose dolphin in the sea around Eastern Australia.

• Keywords: vanjske tjelesne mjere; spolni dimorfizam; rast; morski sisavci; kitovi
• Keywords (english): external body measurements; sexual dimorphism; growth; marine mammals; whales
• Language: croatian
• URN:NBN: urn:nbn:hr:217:650186
• Study programme: Title: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2023-12-09
• Created on: 2021-12-13 12:58:22