Gunzo Kawamura and Teodora Bagarinao and Annita Seok Kian Yong and Siti Narasidah Noor and Leong-Seng Lim (2018) Low pH water impairs the tactile sense of the postlarvae of the giant freshwater prawn Macrobrachium rosenbergii. Tropical Life Sciences Research, 29 (1). pp. 103-112. ISSN 0128-4541
|
Text
Low pH water impairs the tactile sense of the postlarvae of the giant freshwater prawn Macrobrachium rosenbergii.pdf Download (127kB) | Preview |
Abstract
The effect of low pH on the tactile sense of Macrobrachium rosenbergii postlarvae was determined in the laboratory by means of two behavioural assays: shelter (netting) occupancy and jumping response to touch stimuli (taps) by a glass micropipette. The postlarvae were acclimated to pH 4, pH 5, pH 6 and pH 7.5 (control) in 45 L aquaria 5–7 d before the experiments. Shelter occupancy decreased with pH and was significantly lower at pH 4 and pH 5 than at pH 6 and in the control. The jumping response instantly followed a tap 93–98% of the time in the control, pH 6 and pH 5 treatments. However, the postlarvae showed significantly lower jumping response (65%) at pH 4, indicating an impaired tactile sense. Low pH 4–5 probably degrades the chitin of the sensory setae and inhibits the surface mechanoreceptors of the prawn postlarvae.
| Item Type: | Article |
|---|---|
| Keyword: | Mechanoreceptor, Touch Stimulus, Escape Jumping, Shadow Photography |
| Subjects: | T Technology > TR Photography |
| Depositing User: | OTHMAN HJ RAWI - |
| Date Deposited: | 24 Jun 2019 08:30 |
| Last Modified: | 24 Jun 2019 08:30 |
| URI: | https://eprints.ums.edu.my/id/eprint/22290 |
Actions (login required)
 |
View Item |