The Effects of Dietary Oils and Carotenoids on Pigmentation and Reproduction Performance of Fighting Fish(Macropodus opercularis),and the Resistance to Stress of Low Temperature and Ultraviolet Light in their Offspring Larvae.

• Main Authors: Yuan Ju Liao, 廖苑如
• Other Authors: Yew Hu Chien
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/89474623924989029367

碩士 === 國立臺灣海洋大學 === 水產養殖學系 === 94 === This study was aimed to (1) determinate the influence of body Carotenoids (CD) and oxygen consumption by sex and body size (big : 2.86±0.78g ; small : 0.93±0.11g) in wildtype and albino Macropodus opercularis. And to (2) discuss the dietary has not supplied CD or has supplied three kind of CD: Astaxanthin (AX), β-carotene (BC), and mix of the two by AX：BC=1：1 (MX), and two kind of lipid: Fish oil (F), Corn oil (C). They were estimated the influence of these two big factors in the reproductive performance of broodstock and the pigmentation and stress resistant of the larvae. The results of this study showed that, Macropodus opercularis utilize BC as the main pigment compound . The body CD content of albino type still was inferior 50% to wildtype individuals. When reach the mature stage, the wild milter's AX content is higher than the spawner. The BC content in the wildtype small fish was two times higher than in big wildtype fish. The BC content in the albino small fish was seven times higher as compared to the big albino fish. When Macropodus opercularis stay in the low DO concentration the body BC content is high. The supply of CD can promote fish's growth, AX is better than the BC. The dietary supply of lipid F is better than C in improving the growth. The BC’s utility rate of two fish are higher than AX’s utility rate. However when the BC and the AX coexist in the diet, that is means MX diet, then the AX’s utility rate is higher than the BC. Macropodus opercularis belongs to the type II group of pigmented fish. The CD type and the lipin type had not significant effect in the fish reproductive performance. The whole chromatophere area (pigmented area, PA) of two days hatched larvae was influenced by the fact of the spawner’s diet had CD or not. The relative relationship was MX >AX > BC >CO. PA also was affected by the lipid: F＞C. The spawner’s diet contending AX (AX and MX) could promote the ability to resist low temperature and stress, but lipid’s couldn’t. The CD of spawner’s diet can promote the ability of resist UV stress in larvae. The comparative effect of the three kinds of CD in enhance the UV stress in larval was AX ≧ (BC=MX), while the lipid type couldn’t affect this ability. This research demonstrated for the first time that spawner diet contending CD or not, and the CD type and the type of lipid affect the content of CD in the larvae even its stress resistant ability.