Biologija, ekologija i morfometrijska obilježja ektoparazita Pennella sp. (Copepoda)

master's thesis

• Title (english): Biology, ecology and morphometric characteristics of the ectoparasite Pennella sp. (Copepoda)
• Author: Roko Knez
• Mentor: Daniel Matulić (mentor)
• Committee member: Daniel Matulić (predsjednik povjerenstva)
• Committee member: Ana Gavrilović (član povjerenstva)
• Committee member: Tea Tomljanović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Fisheries, Beekeeping, Game Management and Special Zoology); Zagreb
• Defense date and country: 2023-06-29, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Cilj rada je opisati biologiju i ekologiju ektoparazita roda Pennella, razreda veslonošaca
(Copepoda) te odrediti morfološke značajke jedinke Pennella sp. Uzorkovana jedinka je
parazitirala na iglunu (Xiphias gladius) koji je ulovljen sportskim ribolovom (big game fishing)
na pučinskom dijelu Dugog otoka. Jedinka Pennella sp se sastojala od vrata, trupa i abdomena
koji su bili odvojeni od cefalotoraksa i drugog (kraćeg) dijela vrata te prihvaćeni za meso
domadara. Jedinka je u mišićnom tkivu ribe formirala cistu kao karakterističnu posljedicu
infestacije ovim ektoparazitom. Rezultati morfometrijske analize ukazuju na nedoraslost jedinke
roda Pennella. Iako su analizom potvrđene neke sličnosti s vrstom Pennella instructa izostanak
lateralnih rogova i niti s jajašcima nemoguća je daljnja jednoznačna taksonomska determinacija
vrste.

Abstract (english)

The aim of this work is to describe the biology and ecology of ectoparasites of the
genus Pennella, class Copepoda, and to determine the morphological characteristics of the
sampled individual Pennella sp. The sampled individual parasitized on a swordfish (Xiphias
gladius) caught by sport fishing (big game fishing) in the nearshore part of Dugi otok island. The
individual of Pennella sp. consisted of neck, trunk and abdomen separated from the
cephalothorax, and the second (shorter) part of the neck that was connected to the muscle tissue
of the host. The individual formed a cyst in the muscle tissue of the fish as a characteristic result
of infestation with this ectoparasite. The results of the morphometric analysis indicate the
immaturity of the individual. Although the analysis confirmed some similarities with the species
Pennella instructa, the absence of lateral horns and filaments with eggs makes further definite
taxonomic identification of the species impossible.

• Keywords: ektoparazit; Pennella; Xiphias gladius
• Keywords (english): ectoparasite; Pennella; Xiphias gladius
• Language: croatian
• URN:NBN: urn:nbn:hr:204:195439
• Study programme: Title: Fisheries and Game Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka ribarstva i lovstva (magistar/ magistra inženjer/inženjerka ribarstva i lovstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2023-07-03 07:39:54