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Intraspecific VariabiIity in Acrobeloides nanus (de Man) Anderson (Nematoda, Cephalobidae) and a Note on External Morphology
Author(s) -
BOSTRÖM SVEN,
GYDEMO ROLF
Publication year - 1983
Publication title -
zoologica scripta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.204
H-Index - 64
eISSN - 1463-6409
pISSN - 0300-3256
DOI - 10.1111/j.1463-6409.1983.tb00508.x
Subject(s) - biology , intraspecific competition , esterase , zoology , population , agar gel , malate dehydrogenase , ecology , nematode , enzyme , biochemistry , microbiology and biotechnology , demography , sociology
Uniparental free‐living nematodes, Acrobeloides nanus (de Man, 1880) Anderson, 1968, were isolated from the raw humus layer at two coniferous forest sites in central Sweden. Intraspecific variability in progeny from single females cultured both on agar and in soil was studied. Females from field populations were much shorter than those from laboratory cultures and significant differences in length between cultured specimens from the two sites were found. No significant difference in length of animals from comparable cultures on agar and in soil was obtained. The substrate had some effect on the tail shape, but not on the labial probolae shape. No significant differences in taxonomic characters between populations from the two localities were observed. Enzyme analyses by horizontal starch gel electrophoresis showed qualitative differences in isozyme patterns of malate dehydrogenase (MDH) and superoxide dismutase (SOD) in populations from the two sites, while the esterase patterns were unstable with time and less suitable for population analysis.