Reproductive characteristics of two Triturus species (Amphibia: Caudata)

Author:

Vucic Tijana1ORCID,Ivanovic Ana2ORCID,Nikolic Sonja2ORCID,Jovanovic Jovana2,Cvijanovic Milena3ORCID

Affiliation:

1. Institute of Zoology, Faculty of Biology, University of Belgrade, Belgrade, Serbia + Department of Evolutionary Biology, Institute for Biological Research “Siniša Stanković”- National Institute of the Republic of Serbia, University of Belgrade, Belgrade,

2. Institute of Zoology, Faculty of Biology, University of Belgrade, Studentski trg, Belgrade, Serbia

3. Department of Evolutionary Biology, Institute for Biological Research “Siniša Stanković”- National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia

Abstract

During three consecutive years, we compared the reproductive characteristics and oviposition dynamics of two crested newt species, Triturus ivanbureschi and T. macedonicus. These two well-defined species are of special interest because of complex interactions at their contact zone, which include hybridization, species replacement and asymmetric mitochondrial DNA introgression. In common garden experiments, females were introduced to conspecific males, to males of other species and to hybrid males. We monitored the total number and size of the deposited eggs, as well as the dynamics and duration of oviposition during three consecutive years. The number of deposited eggs of Triturus species was much higher than previously reported. Triturus macedonicus lay more eggs that were of larger size in comparison to T. ivanbureschi. Also, the onset of T. macedonicus oviposition was considerably delayed compared to T. ivanbureschi. These are fundamental data, important for understanding complex species interactions in their contact zones.

Funder

Ministry of Education, Science and Technological Development of the Republic of Serbia

Publisher

National Library of Serbia

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology

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