$24^{circ}C$에서 작은뾰족민달팽이의 알 크기 (단경$ imes$장경)는 $1.91{ imes}2.19$ 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.
The egg size and weight of the gray field slug, Deroceras reticulatum Muller, was $1.91{ imes}2.19$ 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 $20^{circ}C$.
