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001-es BibID:BIBFORM073053
Első szerző:Mester Béla (hidrobiológus, ökológus, herpetológus)
Cím:Low frequency of amphibian morphological anomalies in a large protected wetland and grassland complex in Hungary / Mester Béla, Lengyel Szabolcs, Puky Miklós
Megjegyzések:The increasing prevalence of morphological anomalies has recently been suspected as a potential mechanism in the global decline of amphibian populations and species. We studied the frequency of morphological anomalies in postmetamorphic amphibians in the Egyek-Pusztakócs marshes (Hortobágy National Park, east Hungary). The site was a wetland and grassland complex used heavily by intensive agriculture until 1973 when it was protected, restored, and managed for biodiversity. We examined 4,953 individuals of 11 species encountered in four monitoring schemes (pitfall traps, bottle traps, dip netting, visual surveys) during 2010?2013. We found no evidence of malformation and a low frequency (0.3%) of abnormalities, which did not differ from the background frequency of 0 to 5% estimated in previous studies for wild populations in natural habitats. All observed abnormalities were found in 15 individuals of four species and were consistent with injuries caused by predators, although the effects of parasites could not be excluded. It remains uncertain whether the absence of malformations and the observed low frequency of abnormalities are related to the 40 years of protection and the long-term decrease in agrochemical use or to the more recent grassland restoration and marsh management actions. Nevertheless, our study provides an example that large, healthy populations of amphibians can exist in large protected wetland complexes restored and managed for biodiversity.
ISBN:1931-7603 2151-0733
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Herpetological Conservation and Biology 10 : 2 (2015), p. 679-687. -
További szerzők:Lengyel Szabolcs (1971-) (biológus) Puky Miklós (1961-2015) (biológus, herpetológus)
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