Utjecaj lokacije na kondicijsko stanje riba

master's thesis

• Title (english): The impact of location on the condition factor of fishes
• Author: Anita Gajdić
• Mentor: Tomislav Treer (mentor)
• Committee member: Tomislav Treer (predsjednik povjerenstva)
• Committee member: Ivica Aničić (član povjerenstva)
• Committee member: Daniel Matulić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Fisheries, Beekeeping, Game Management and Special Zoology); Zagreb
• Defense date and country: 2016-07-07, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy; Fishing

Abstract

U ovom radu prikazan je dio rezultata ribarskog istraživanja rijeke Save u svom toku
kroz Hrvatsku koje je obavljeno u razdoblju od 2003. do 2012. godine. Napravljena je
usporedba kondicijskog stanja 20 vrsta riba na 8 različitih lokacija rijeke Save. Faktor
kondicije mjeren je Fultonovim koeficijentom kondicije koji nam dobro pokazuje opće
stanje riba, kao i promjene koje se događaju zavisno od lokacije i fizioloških ciklusa u
životu riba.
Na osnovi izmjerenih morfometrijskih parametara izračunat je prosječan faktor
kondicije (CF) za svaku istraživanu vrstu, te su oni uspoređeni međusobno i s
prosječnim faktorom kondicije rijeke Save. Raspon faktora kondicije za sve vrste riba
kreće se od 0,43 – 2,06. CF viši od 1 na svim promatranim lokacijama zabilježen je kod
grgeča (max. 1,22), babuške (max. 1,86), balavca (1,46) te krupatice (2,06) i sunčanice
(1,89) kod kojih je izmjere najviši CF. Najlošiji CF izmjeren je kod vijuna i velikog
vijuna i to na svim promatranim lokacijama (raspon od 0,43 – 0,62 na ukupno 6
lokacija).
Utvrđeni su i prosječni postoci faktora kondicije riba s 8 lokacija rijeke Save, s
najmanje četiri vrste, s više od deset primjeraka te su komparirani s prosjekom za rijeku
Savu i RH. Raspon prosječnog postotka faktora kondicije na promatranim lokacijama
rijeke Save, za sve vrste riba, kreće se od 89,24% na lokaciji Gornji Varoš gdje je
najmanji, do 105,24% na lokaciji Puska gdje je najveći. Faktori kondicije riba rijeke
Save s prosjekom od 98,49% u većini su nešto viši od onih za kopnene vode cijele
Republike Hrvatske s prosjekom od 94,46%. Potrebno je provesti dodatna istraživanja s
većim brojem primjeraka pojedinih vrsta kako bi se ovi rezultati potvrdili.

Abstract (english)

This paper presents a part of the research results in a section of river Sava that flows
through Croatia. The research is conducted in the period from 2003 to 2012. A
comparison of condition factors of 20 fish species from 8 different locations of the river
Sava has been done. Condition factor was measured by Fulton’s condition coefficient
which shows a general state of fishes, as well as the changes which occur depending on
the location and physiological cycles in the life of fishes.
The average condition factor (CF) was calculated for each studied species on the basis
of the measured morphometric parameters. Those average condition factors were
compared mutually and with an average condition factor of the river Sava. Condition
factors for all fish species range from 0,43 to 2,06. CF higher than 1, at all observed
locations, has been recorded for Percidae (max. 1,22), Prussian carp (max. 1,86), Ruffe
(1,46) as well as Silver bream (2,06) and Pumpkinseed (1,89) which have the highest
CF. The lowest CF was recorder for Loach and Balcan loach at all observed locations
(ranging from 0,43 to 0,62 at altogether 6 locations).
Average percentages of condition factors of fishes from 8 locations on the river Sava
were determined, taking into consideration at least four species and more than ten
specimens, which were compared with the average factors for the river Sava and the
Republic of Croatia. Average percentages of condition factor in the observed locations
of the river Sava, for all fish species, range from the lowest 89.24% at Gornji Varoš to
the highest 105.24% at Puska. Condition factors of fishes from river Sava with an
average of 98.49% are generally higher than those for inland waters throughout the
Croatian with an average of 94.46%. It is necessary to conduct a further research with a
larger number of specimens of each species in order to confirm these results.

• Keywords: kondicijski faktor; rijeka Sava; lokacija
• Keywords (english): condition factors; river Sava; location
• Language: croatian
• URN:NBN: urn:nbn:hr:204:799625
• 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: 2016-07-29 09:25:56