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Abstract

Effects of different soiltypes and soil moisture content on egg hatching of Oedaleus decorus asiaticus.

Abstract

To clarify the effects of different soil types and soil moisture content on eggs hatching of Oedaleus decorus asiaticus. The brown ea1eie soi1, b1aek soi1 and sandy soil from Xi1 inguo1e League of Inner Mongolia were se1eeted to study egg hatching Of o. d. asiaticus under 28oC with 4 different soi1 moisture contents (5%, 1o%, 15% and 2o%) in the 1aboratory. The resu1ts showed that soil type, soi1 moisture content and their interaction had a significant effect on the hatching rate of o. d. asiaticus, but no significant effect on the pre-hatching days, whi1e the hatching duration was on1y significantly affected by the soi1 type. The hatching rate was the highest (42.5% ~ 61.4%) in brown calcareous soi1, followed by black soi1 and sandy soi1. The hatching duration in brown ea1eareous soi1 (3.6 io.2 d) was significantly shorter than that in b1aek soi1 and sandy soi1.1n brown ca1careous soil, the hatching rate (60.3% ~ 61.4%) under soil moisture content with 1o% ~ 2o% was significantly higher than the rate (42.5%) under soi1 moisture content with 5%. In b1aek soi1, the hatching rate (49.8% ~ 42.7%) under soi1 moisture content with 15% ~ 2o% was the highest, followed by the hatching rate with 28.4% and 13.5% under soi1 moisture content with 1o% and 5% respectively. In sandy soi1, the hatching rate (38.7%) under soi1 moisture content with 5% was the signifieant1y higher than the hatching rate (12.9% ~ 19.8%) under other soi1 moisture contents (42.5% ~ 61.4%). The relative hatching rate accounted for 73.1% ~98.o% at first three days regard1ess Of the different soi1 types. It reached a peak at 1 1 under sandy soi1, but there was no signifieanfly different found comparing to the other two soil types. Whi1e the re1ative hatching rate reached a peak at 2 d in brown ea1eie soil and black soi1, which were signifieant1y higher than that Of sandy soi1. In short, the brown ea1eareous soi1 with 10% ~ 20% soi1 moisture content was most suitab1e for the egg hatching with the higher hatching rate, shorter hatching duration and more concentrated egg hatching, fo11owed by b1ae1< soi1 and sandy soil.

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Abstract details

  • Author Affiliation
  • College of Plant Protection, Gansu Agriculture University, Lanzhou 730070, China.
  • ISSN
  • 1674-0858
  • Publisher information
  • Guangdong Provincial Association for Science & Technology Guangzhou China
  • Language of Summary
  • English
  • Record Number
  • 20219832542