碩士 / 國立臺北教育大學 / 自然科學教育學系碩士班 / 95 / This experiment, from February 2006 to January 2007, was designed to learn the habit and breeding behavior of Macropodus opercularis (Linnaeus) in an artificial environment. Paradise fish’s behaviors were categorized into nine patterns in this experiment. Among these patterns, swimming took 47.6%, feeding took 20.4%, motionless took 17.8%, and the rest behavior patterns including surfing to breath, building nest, taking care of larvae, waving the fins, and waving the fins and body without moving around.
Paradise fish’s behavior patterns are closely related to environmental temperature. The percentage of active behaviors during 14℃~18℃ would take only 37.33% of the period of observation; and when the temperature moved up to 29℃~32℃, it would also increase to 90.26%. Temperature also influenced the usage of space of paradise fish. They tended to perform most of their behaviors near the surface area. When being disturbed, they would move to the bottom of the water area fast and hold still there.
With the increase of temperature, paradise fish’s fighting behavior tends to be faster and more furious. It usually ended within 30 minutes and the advantage lied in the previous habited paradise fish.This experiment also discussed the influence of temperature on paradise fish’s breeding behavior. When food sources were abundant and the water temperature was above 22℃, male paradise fish would start to produce foam to build up its nest. Under the influence of low temperature, female paradise fish would not lay eggs unless the temperature was increased by heating facility to 26℃. However, if the temperature was kept steady at 26℃, the female paradise fish would not lay eggs, either. The temperature had to be lowered for at least one week before it could be raised again to induce female paradise fish to lay eggs. After the eggs were laid and fertilized, if the temperature increase in the following days were lower than 0.2℃ a day, the number of larvae hatched in the nest would be very low or even none; on the contrary, if the temperature increase could be more than 0.8℃ a day, the number of larvae could be effectively improved. The differences could be as huge as 250 to 1127.
When discussing the survival rate of larvae, this experiment confirmed that small Cyclops would be the most suitable feed for larvae. If the water quality was stable and food source was sufficient, survival rate of larvae could be more than 90%.
| Identifer | oai:union.ndltd.org:TW/095NTPTC147010 |
| Date | January 2007 |
| Creators | JENG YIN WEI, 鄭穎蔚 |
| Contributors | 陳順其 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 79 |
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