Journal
AQUACULTURE RESEARCH
Volume 32, Issue 3, Pages 169-179Publisher
BLACKWELL SCIENCE LTD
DOI: 10.1046/j.1365-2109.2001.00537.x
Keywords
abalone; activity; homing; locomotion; moonlight
Categories
Ask authors/readers for more resources
Locomotion behaviour of the abalone, Nordotis discus (Reeve), N. gigantea (Gmelin) and Sulculus aquatilis (Reeve), was observed for 5- to 10-day periods during the early summer and autumn from 1997 to 1999, Before sunset, the animals were individually put beneath each shelter situated on the flat concrete floor of indoor and outdoor tanks. For tracing of the locomotion path, a luminous rod was fixed on the animal's shell, Except for nonappearance, the locomotion behaviour showed leaving or homing; these ratios against each total observation according to each species were 70.0% and 16.7% in N, discus, 47.1 and 23.5% in N. gigantea and 57.6 and 24.2% in S, aquatilis respectively. Irrespective of species, recurrences to the home were frequently recognized during the locomotion. For the homing behaviour, its critical distance was approximately Im from the home. Moonlight did not completely restrain the abalone appearance from the home, though the appearance frequency during the period around the full moon was lowered and in some cases the time of initial appearance was retarded.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available