Reproductive traits and early development of Salmo obtusirostris (Haeckel 1852.) in river Vrljika

Vlajčić, Mila (2013) Reproductive traits and early development of Salmo obtusirostris (Haeckel 1852.) in river Vrljika. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

During April 2012. the development of the softmouth young larvae from hatching to a loss of yolk sac was overseen. The larvae were obtained by artificial spawning from "Distribution and conservation of endemic subspecies of softmouth trout (Salmo obtusirostris) in the Adriatic river. Through 26 days, 14 larvae was morphometrically processed and described their development, after that on the certain larvae was made a histological analysis. In isolated gonads of adult specimens was performed histological analysis to see the stages of developments. On the basis of morphometric analysis data were obtained on the development of fins, the senses and the respiratory system, and the transition to an oral diet. Histological analysis of the gonads help in determining age of individulas Salmo obtusirostris by comparing individuals with changes in the testes of grayling. In histological analysis of the larvae are visible formed organs.

Item Type: Thesis (Diploma thesis)
Keywords: softmouth, early development, artificial spawning
Supervisor: Zanella, Davor
Co-supervisor: Gregorović, Gordana
Date: 2013
Number of Pages: 62
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 20 Feb 2014 13:37
Last Modified: 22 Sep 2014 19:53
URI: http://digre.pmf.unizg.hr/id/eprint/457

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