Comparative Data on the Trophic Spectrum of Syntopic [i]Bombina variegata[/i] and[i] Rana temporaria[/i] (Amphibia: Anura) Populations from the Iezer Mountains, Romania
Journal Title: Ecologia Balkanica - Year 2011, Vol 3, Issue 1
Abstract
In August 2009, we compared the trophic spectrum of syntopic [i]Bombina variegata[/i] and [i]Rana temporaria[/i] populations from the Bratia Valley in the Iezer Mountains. The separation of the trophic niche observed between the juveniles and the adults of [i]R. temporaria[/i] is caused by the differences in size between them, differences that influence their jump. The main consumed prey taxa by [i]Rana temporaria[/i] is represented by Arahnida, Gastropoda and Hymenoptera. Furthermore, the differences between the sizes of their mouths separate the trophic niche between the two species. Our results indicate a trophic selectiveness for B. variegata, which prefers ants. Despite the fact that the two species share the same habitat, the ants were consumed mostly by [i]B. variegata[/i]. This is probably a consequence of the fact that [i]B. variegata[/i] is a poisonous species, the toxins being able to originate from their preys – as are ants as well. The lack of competition for the two species indicates a rich trophic offer, enough to satisfy the energy needs of both species in contact in a limited space.
Authors and Affiliations
Sára Ferenți, Severus-D. Covaciu-Marcov
Keywords
Related Articles
- EP ID EP113915
- DOI -
- Views 129
- Downloads 0
Reproductive Biology of African River Prawn Macrobrachium vollenhovenii ([i]Crustacea, Palaemonida[/i]e) In the Lower Taylor Creek, Niger Delta, Nigeria
The sex ratio, Gonadosomatic Index (GSI) and fecundity of M. [i]vollenhovenii[/i] in the Lower Taylor Creek, Niger Delta, Nigeria were studied between June 2008 and May 2010. The sex ratios showed that M. [i]vollenhoveni...
Ecotoxicology Assessment of Waste Water Emitted From Radomir Metal Industries (Bulgaria)
The purpose of this article is to evaluate the toxicological effect of wastewater emitted from „Radomir Metal Industries". It has been registered that the range of 50% mortality (LC50) of great water flea (Daphnia magna...
Study on the Total Coliforms Count and Coli Titter in the Waters of Kardzhali Reservoir, Bulgaria
The aim of this study was to examine TC (total coliforms) and coli titter from two sampling stations in the aquatory of Kardzhali Dam Lake and one station in River Arda, in August, 2011. The values of the TC index in the...
Insecticidal Activity of Essential Oil from [i]Juniperus communis[/i] L. [i]subsp. hemisphaerica [/i](Presl) Nyman against Two Stored Product Beetles
In the current study, insecticidal activity of essential oil from fruits of [i]Juniperus communis[/i] L. [i]subsp. hemisphaerica[/i] (Presl) Nyman was evaluated against [i]Rhyzopertha dominica[/i] (F.) and [i]Tribolium c...
Оценка на екологичното състояние на реките в подбасейна на река Арда