منابع مشابه
Gametogenesis in amphimictic and parthenogenetic populations of Aphelenchus avenae.
The female reproductive system of Aphelenchus avenae, studied in orcein-stained material, showed a peculiar structural pattern not yet reported in other nematodes. Chromosome morphology and behavior during gametogenesis could be studied in more detail than in other tylenchid or aphelenchid species investigated to date. In a bisexual population from Australia, gametogenesis was by normal meiosis...
متن کاملInhibition of Acetylcholinesterases from Aphelenchus avenae by Carbofuran and Fenamiphos.
Exposure to carbofuran and fenamiphos for 72 hours reduced the numbers of active Aphelenchus avenae in aqueous suspension by > 75%. When nematicides were removed, many A. avenae exposed to carbofuran resumed normal movement but A. avenae treated with fenamiphos did not recover. Acetylcholinesterase (AChE) activity was suppressed by > 95% in nematodes treated with carbofuran or fenamiphos. Howev...
متن کاملInfluence of Aphelenchus avenae on Vesicular-arbuscular Endomycorrhizal Growth Response in Cotton.
The influence of Aphelenchus avenae on the relationship between cotton (Gossypium hirsutum 'Stoneville 213') and Gigaspora margarita or Glomus etunicatus was assessed by its effect on the mycorrhizal stimulation of plant growth and microorganism reproduction. The mycophagous nematode usually did not suppress stimulation of shoot growth resulting from mycorrhizae (G. margarita) at inoculum level...
متن کاملAge specific sensitivity of the nematode Aphelenchus avenae to mercury toxicity.
Although one of the ultimate goals of ecotoxicology is to predict the effects of chemical substances and compounds on whole communities and ecosystems, it is generally accepted by ecotoxicologists that single-species toxicity tests may provide an adequate first step toward the ecological risk assessment of pollutants in soil and water. Consequently, several toxicity tests (ASTM 1993) have been ...
متن کاملRespiration Responses of a Caenorhabditis sp. and Aphelenchus avenae to the Nematicide, 1,2-dibromoethane (EDB).
The respiration rate of third stage larvae of Caenorhabditis sp. exposed to 0.53 x 10(2) M EDB was 120% greater than in untreated checks and was highest shortly after the exposure began. Similarly-treated third- and fourth-stage Aphelenchus avenae exhibited no marked respiratory response. Different responses of these animals to EDB probably reflect basic physiological differences between the ne...
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ژورنال
عنوان ژورنال: Australian Journal of Biological Sciences
سال: 1968
ISSN: 0004-9417
DOI: 10.1071/bi9680169