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 125
- Downloads 0
Effect of Ecotourism on Plant Biodiversity in Cherlagh Protected Area North-Eastern Iran
Due to importance of considerable effects of ecotourism on environment, the effect of ecotourism on plant biodiversity in Cherlagh zone was investigated .To acquire the aim of the article, the sampling area was sel...
Physico-Chemical Characteristics of the Grassland Soils of Yusmarg Hill Resort (Kashmir, India)
Physico-chemical analysis was carried out on the grassland soils of Yusmarg Hill Resort, Kashmir during the months of May, June, November and December 2010, at four micro sites with some minor variations in the abiotic a...
In Memoriam - LILYANA DIMITROVA YURUKOVA
Comparative Study on the Landfill Leachate Treatment in a Vertical Flow Wetland System With/Without Phragmites australis
The landfill leachate treatment efficiency in a vertical-flow wetland system with and without planted Phragmites australis was investigated. The BOD/COD ratio of the landfill leachate was 0.38. Water samples were taken d...
Dynamics of Macroalgae at Two Different Ecological Sites in Alexandria Coastal Waters
A year cycle investigation of the macroalgae dynamics in Alexandria coastal waters was conducted at two selected stations that maximize possible differences in seawater characteristics. Eleven genera, including seventeen...