Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Effects of Temperature on the Development and Longevity of the Gray Field Slug, Deroceras reticulatum Müller (Stylommatophora: Limacidae)

작은뾰족민달팽이(Deroceras reticulatum)의 발육과 수명에 미치는 온도효과

  • Kim, Hyun-Ju (Dept. of Functional Crop, Nat. Inst. of Crop Science, RDA) ;
  • Bae, Soon-Do (Dept. of Functional Crop, Nat. Inst. of Crop Science, RDA) ;
  • Lee, Geon-Hwi (Dept. of Rice and Winter Cereal Crop, Nat. Inst. of Crop Science, RDA) ;
  • Yoon, Young-Nam (Dept. of Functional Crop, Nat. Inst. of Crop Science, RDA) ;
  • Park, Sung-Tae (Dept. of Functional Crop, Nat. Inst. of Crop Science, RDA) ;
  • Choi, Byeong-Ryeol (Dept. of Functional Crop, Nat. Inst. of Crop Science, RDA) ;
  • Park, Chung-Gyoo (Research Institute of Life Science, Gyeongsang National University)
  • 김현주 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 배순도 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 이건휘 (국립식량과학원 벼맥류부) ;
  • 윤영남 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 박성태 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 최병렬 (농촌진흥청 국립식량과학원 기능성작물부) ;
  • 박정규 (경상대학교 생명과학연구원)
  • Published : 2009.12.30
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Abstract

The egg size and weight of the gray field slug, Deroceras reticulatum Muller, was $1.91{\times}2.19$ mm and 3.3 mg at $24^{\circ}C$, respectively. Its weight increased from newly laid eggs to adults for 17 weeks at four temperature regimes and was heaviest at $20^{\circ}C$, followed by 24, 16 and $28^{\circ}C$. Likewise, hatching rate of the egg batches was highest with 95% at $20^{\circ}C$, followed by 24, 16 and $28^{\circ}C$ with significant differences. The number of eggs in the batches was increased with 20 at $20^{\circ}C$ while it was only 10 at $28^{\circ}C$. The average accumulated egg-laying days was longest with 15 days at $20^{\circ}C$ while shortest with 9 days at $24^{\circ}C$. The range of egg-laying period was shortest with 84-134 days at $16^{\circ}C$ and longest at $20^{\circ}C$. Thus, the total number of eggs laid by adult D. reticulatum was highest with 217 at $20^{\circ}C$ and lowest with 105 at $16^{\circ}C$. The egg period was 12-19 days while the juvenile period and adult longevity were 51-68 days and 85-134 days, respectively. The life span of D. reticulatum from egg to adult was longest with 216 days at $20^{\circ}C$, followed by 193 days at $24^{\circ}C$, 170 days at $16^{\circ}C$ and 151 days at $28^{\circ}C$. Accordingly, the most favorable temperature for the oviposition, development and longevity of D. reticulatum is $20^{\circ}C$.

$24^{\circ}C$에서 작은뾰족민달팽이의 알 크기 (단경$\times$장경)는 $1.91{\times}2.19$ mm, 무게는 3.3 mg 이었다. 산란 직후의 알에서부터 발육하여 우화한 성체가 최초 산란 시까지 17주간의 무게는 발육일수가 경과할수록 증가하였으며, 온도별 무게는 $20^{\circ}C$에서 가장 무거웠으며, 다음은 24, 16 및 $28^{\circ}C$ 순이었다. 작은뾰족민달팽이가 산란한 난괴수의 부화율은 $20^{\circ}C$에서 95%로 가장 높았으며, 다음은 24, 16 및 $28^{\circ}C$의 순으로 유의한 차이가 있었다. 난괴당 알수는 $20^{\circ}C$에서 20개로 가장 많았으며 $28^{\circ}C$에서 10개로 가장 적었다. 누적 산란 일수는 $20^{\circ}C$에서 15일로 가장 길었으며, $24^{\circ}C$에서 9일로 가장 짧았고, 산란기간은 84~134일로 $16^{\circ}C$에서 가장 짧았으며, $20^{\circ}C$에서 가장 길었다. 그리하여 총 산란수는 $20^{\circ}C$에서 217개로 가장 많았고, $16^{\circ}C$에서 105개로 가장 적었다. 작은뾰족민달팽이의 알기간은 12~19일, 유체기간은 51~68일, 성체수명은 85~134일 이었으며, 알에서부터 성체수명까지의 총 생존기간은 $20^{\circ}C$에서 216일로 가장 길었으며, 다음은 $24^{\circ}C$에서 193일, $16^{\circ}C$에서 170일 및 $28^{\circ}C$에서 151일 순 이었다. 따라서 작은뾰족민달팽이의 산란, 발육 및 성체수명에 가장 유리한 온도는 $20^{\circ}C$로 여겨졌다.

Keywords

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