Although they are frequently lumped together, reptiles and amphibians belong to two very different zoological groups. Nevertheless, one fact is clear: while numerous reptile and amphibian species on Earth are in decline, others have taken advantage of trade or human movements to become established in new lands, adopting different, and sometimes unusual, strategies. The authors have taken a few ...

Five species of amphibians, Leptodactylus podicipinus, Scinax acuminatus, S. nasicus, Rhinella fernandezae and Pseudis paradoxa, were collected in Corrientes province, Argentina and searched for larval nematodes. All larval nematodes were found as cysts in the serous of the stomach of hosts. Were identified one superfamily, Seuratoidea; one genus, Spiroxys (Superfamily Gnathostomatoidea) and on...

Road mortality can have a significant negative impact on amphibian population survival. Amphibian roadkill and how to avoid it are therefore widely studied, mostly car roads but limitedly bicycle paths. We investigated whether paths in Bargerveen, Dutch Natura 2000 site, was affected by the number of passing cyclists crossing amphibians. four transects daily basis during most spring migration 2...

Alarm bells have been ringing around the world about the decline in number of many amphibian populations and a new global study deepens concerns about the future of many species. Nigel Williams reports.

Amphibians have communicable and non-communicable diseases. The following pages provide information on some of these diseases. Chytridiomycosis, Ranaviruses, and mucormycosis are discussed separately. Reviews of diseases are available in: Berger L, Longcore J, Speare R, Hyatt A, Skerratt LF. 2009. Fungal Diseases in Amphibians. In: Amphibian Biology, Volume 8 Amphibian Decline: Disease, Parasit...

379 T first World Congress of Herpetology (University of Kent, Canterbury, UK, 1989) brought together field biologists who swapped stories about mysterious disappearances of various species of frogs. Sufficient concern was expressed to cause the National Research Council (USA) to convene a special workshop (February, 1990) to explore the matter1. The organization of a special task force on decl...

This review is a comparative analysis of retina regeneration in different amphibians. Special attention is given to the newt, which, unlike other vertebrates, retains the capacity for the regeneration of eye structures for all life. The review focuses on the sources of the cells which contribute to retina regeneration, proliferative activity of cells participating in regeneration, the factors w...

T H E failure of de novo regeneration of extirpated bones in adult urodeles has been described repeatedly. Wendelstadt (1901) reported the absence of skeletal regeneration following the removal of either the ulna or radius from the otherwise intact limbs of salamanders. Reed (1903) and Morrill (1918) likewise failed to obtain regeneration of previously excised fibulae in salamander hind limbs. ...

The reduction or loss of lungs in some amphibian species is a rare evolutionary occurrence. The discovery of the first lungless frog sheds further light on the physiological, morphological and behavioral changes that allowed sufficient external respiration in the absence of lungs.