seasonal variation in population abundance and chytrid infection in stream-dwelling frogs of the brazilian atlantic forest.enigmatic amphibian declines were first reported in southern and southeastern brazil in the late 1980s and included several species of stream-dwelling anurans (families hylodidae and cycloramphidae). at that time, we were unaware of the amphibian-killing fungus batrachochytrium dendrobatidis (bd); therefore, pollution, habitat loss, fragmentation and unusual climatic events were hypothesized as primary causes of these declines. we now know that multiple lineages of bd have infected amphibians of ...201526161777
description of a new soft tick species (acari: argasidae: ornithodoros) associated with stream-breeding frogs (anura: cycloramphidae: cycloramphus) in this study, we present a morphological description of immature and adult specimens of ornithodoros saraivai n. sp., a tick associated with the frog cycloramphus boraceiensis (cycloramphidae) at são sebastião island, located in the são paulo state seaboard, brazil. while larvae of o. saraivai are ecologically related to ornithodoros faccinii, another soft tick associated with cycloramphids, the combination of 7 sternal pairs, 16 dorsal pairs, a pyriform dorsal plate and a partially toothed hyp ...201728506539
mites and ticks of reptiles and amphibians in brazil.this study focuses on the parasitic associations of mites and ticks infesting reptiles and amphibians through a multifocal approach. herein, reptiles (n= 3,596) and amphibians (n= 919) were examined to ensure representativeness of the brazilian herpetofauna megadiversity. the overall prevalence was calculated to better understand which were the preferred hosts for each order of acari (trombidiformes, mesostigmata and ixodida), as well as to determine which orders frequently parasitize reptiles a ...202032407792
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