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Influence of earthworms on larval emergence in the potato‐root eelworm, Heterodera rostochiensis Wollenweber
Author(s) -
Ellenby C.
Publication year - 1944
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1944.tb06746.x
Subject(s) - biology , larva , hatching , heterodera , cyst , botany , zoology , ecology , nematode , pathology , medicine
Hatching experiments were carried out with potato‐root eelworm cysts ( a ) from plant pots containing different numbers of earthworms, and ( b ) from worm casts. Cysts from these sources differed from controls in the following ways: (1) more larvae emerged, per cyst; (2) the larvae emerged sooner; (3) more cysts produced larvae; (4) the number of emerging larvae, per cyst, increased with the number of earthworms. Examination of the contents of cysts isolated from worm casts showed that, compared with controls, 145% more eggs hatched; it also indicated some of the limitations of the ‘per‐cyst’ basis of expressing results.