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Oxygen and the hatch of eggs and migration of larvae of Meloidogyne javanica
Author(s) -
BAXTER R. I.,
BLAKE C. D.
Publication year - 1969
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.1744-7348.1969.tb05481.x
Subject(s) - hatching , biology , oxygen , meloidogyne javanica , larva , limiting oxygen concentration , zoology , embryo , suction , botany , ecology , fishery , nematode , mechanical engineering , chemistry , organic chemistry , engineering
SUMMARY The percentage hatch of eggs of Meloidogyne javanica increased asymptotically as the oxygen concentration increased from 0·2 to 21%. Hatch was unaffected by suction pressures of less than pF 3·4 at any oxygen concentration but was decreased by higher suctions. Both the development of embryos and the migration of larvae approached a maximum at an oxygen concentration of about 15%. Hatching was not limited by the rate oxygen diffused through the gelatinous matrix of the egg sac nor was the concentration of oxygen at the surface of an egg sac significantly lower than that within an individual egg. The maximum rate of metabolism appeared to need an oxygen concentration within the egg greater than 10%.