Open AccessSurvival of the first stage larva of the metastrongyloid nematode Elaphostrongylus rangiferi under various conditions of temperature and humidity
Author(s) -
Lorentzen Geir,
Halvorsen Odd
Publication year - 1986
Publication title -
ecography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.973
H-Index - 128
eISSN - 1600-0587
pISSN - 0906-7590
DOI - 10.1111/j.1600-0587.1986.tb01223.x
Subject(s) - larva , humidity , zoology , feces , nematode , biology , stage (stratigraphy) , horticulture , ecology , botany , meteorology , physics , paleontology
First‐stage larvae of E. rangiferi kept in water at 50°C died within 80 minutes, while at 6° the last larvae died between day 180 and 210. The time it took to reach 1 x = 0.5 (half of the larvae dead) at various temperatures between 6° and 50° was well described by the exponential function y = 614.6e −0.15x , giving a value of 615 days to reach 1 x = 0.5 at 0°C. There was no clear decrease in the survival of larvae frozen at −20° in faeces and in water, and at −80° in faeces after 360 days. When subjected to repealed freezing and thawing, all larvae died within 77 days. When kept in air at RH = 20% and 22°C, all larvae died within 11 days, while when frozen (−20°C) in air at RH approx. 0%, 1 x stayed at approx. 0.5 from day 5 to day 16.