Reproductive characteristics of common toad, Bufo bufo Linnaeus (Amphibia; Anura) in Bjelovar-Bilogora area

Veljković, Monika (2015) Reproductive characteristics of common toad, Bufo bufo Linnaeus (Amphibia; Anura) in Bjelovar-Bilogora area. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

Common toad, Bufo bufo, is one of the most frequent amphibian species in Croatia, but there is only few data about her reproduction in Bjelovar-Bilogora area and in Croatia. This paper includes research of reproductive capacity of common toad females and males and research of tadpoles morphometry. 7 males and 5 females of common toad, collected on locations Rajić near Bjelovar and location near Grubišno Polje, was used for determination of total number of sperm from males and number of eggs/mass of eggs from females. For 63 tadpoles of common toad was performed determination of stages of their development (according Gosner 1960) and measurement of 29 morphometry measures. Results show that mass and lenght of the body don't affect total number of male sperm and that the number of sperm decrease with age of males. Relation of female body mass and number of eggs is not statisticaly significant, probably because of presence of females with non-viabile eggs. Abundance of population of tadpoles don't have the same effect on all tadpoles and at small tadpoles can cause mortality or slower development.

Item Type: Thesis (Diploma thesis)
Keywords: reproductive capacity, morphometry, location Rajić, location Grubišno Polje
Supervisor: Mrakovčić, Milorad
Date: 2015
Number of Pages: 55
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 09 Mar 2016 12:56
Last Modified: 09 Mar 2016 12:56
URI: http://digre.pmf.unizg.hr/id/eprint/4567

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