Anhydrobiosis in Five Species of Plant Associated Nematodes
Abstract
Five species of nematodes - Hemicriconemoides pseudobrachyurum, Hemicycliophora conida, Macroposthonia ornata, Aphelenchoides ritzemabosi, and Psilenchus hilarulus -were desiccated to study their capacity to survive anhydrobiotically. Results indicate that the ability of the sheath to shrink quickly and its relatively loose attachment with the nematode body allow H. conida to survive longer than H. pseudobrachyurum; the survival of M. ornata was intermediate, A. ritzemabosi and P. hilarulus survived immersion in paraffin oil for 12 and 17 days, respectively. Both of these nematodes possess multiple contraction ability; i.e., coiling coupled with transverse and longitudinal folding of the cuticle. P. hilarulus is a new addition to the list of anhydrobiotic nematodes. Key words: Aphelenchoides ritzemabosi, Hemicriconemoides pseudobrachyurum, Hemicycliophora conida, Macroposthonia ornata, Psilenchus hilarulus, cuticle, paraffin oil.Downloads
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