수온이 긴꼬리투구새우(배갑목: 투구새우과)의 생장에 미치는 영향

Abstract

Growth and other biological processes in aquatic organisms are particularly dependent on water temperatures. This study examined the effects of water temperature on the growth of Triops longicaudatus. The influence of water temperature fluctuations was that growth rate was increased at higher temperatures. The mean carapace length was 5.7 () mm in a water temperature of and 7.5 () mm in a water temperature of on the 14th day after submergence. It was 6.9 () mm in a water temperature of and 7.8 () mm in a water temperature of on the 21st day after submergence. The mean carapace length grew rapidly within 14 days after submergence, but increase in carapace length beyond this time was slow. The influence of water depth fluctuations was low as the mean carapace length was 9.3 () mm under a water depth of 80 mm and 9.5 () mm under a water depth of 190 mm on the 19th day after submergence. Biomass showed that the carapace length of 5, 10, 16 and 20 mm was a dry-weight of 1.1 (), 18.0 (), 26.0 () and 52.3 () mg respectively. The number of eggs increased rapidly with increments in carapace length. The mean number of eggs was 20 () at a carapace length of 7.0 mm, but at a carapace length of 17.0 mm, the mean number of eggs was 560 (). The results suggested that differences in water temperature accounted for the differences in length of the carapace and the number of eggs.