HUBEI AGRICULTURAL SCIENCES ›› 2021, Vol. 60 ›› Issue (10): 72-76.doi: 10.14088/j.cnki.issn0439-8114.2021.10.014

• Plant Protection • Previous Articles     Next Articles

Distribution of Pomacea canaliculata under natural light

GUO Jing, CHEN Ying-tong, CHEN Shuo, CHEN Hai-ying, DING Si-min, HUANG Hong-ying, ZENG Jian   

  1. Henry Fok School of Biology and Agriculture,Shaoguan University,Shaoguan 512005,Guangdong,China
  • Received:2021-01-01 Online:2021-05-25 Published:2021-05-28

Abstract: The distribution law of Pomacea canaliculata under natural light was studied. The distribution of Pomacea canaliculata under natural light at different time(9:30,12:00,14:30) in aquarium was investigated for days, the difference in density of Pomacea canaliculata between inside and outside the shadow in the same water depth and time was analyzed, repeated measures ANOVA was used to determine the effects of sunlight, water depth, time and snail individual size on distribution of Pomacea canaliculata. The results showed that sunlight and time in a day had obvious effect on distribution of the snails. At the water depth of 5, 10, 20 cm, the density of Pomacea canaliculata in the shaded area was obviously higher than that in the sunshiny region at 12:00. The different between shade and lighting area in snail density was highest at 12:00 and lowest at 9:30, that meant more snails tended to stay in the shading area when the time was closer to noon. But the distribution of Pomacea canaliculata had not been significantly impacted by water depth and snail individual size. Thus, the natural light could affect the distribution of Pomacea canaliculata in water, the distribution density of the snails in sunshiny region and shaded area exhibited regular change, the snail can crawl to shade away to avoid direct sunlight, this might be related to water temperature, illumination intensity, and so on.

Key words: Pomacea canaliculata, light, distribution, ecological adaptation

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