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覆蓋光電板之養殖池中的微藻對溫度耐性及文蛤 (Meretrix lusoria) 的養殖成效研究

  • 出版日期:110-06-30
  • 標題title(英):
    Temperature Tolerance of Microalgae Collected from Culture Ponds Under Covered Photoelectric Panels and the Cultivation Efficiency of Hard Clam (Meretrix lusoria)
  • 作者:周芷儀•周昱翰•吳豐成
  • 作者auther(英):Chih-Yi Chou, Yu-Han Chou and Feng-Cheng Wu
  • 卷別:29
  • 期別:1
  • 頁碼:59-67

近年來,氣候急遽變化使微藻增長情況不佳,導致臺灣文蛤 (Meretrix lusoria) 養殖產生餌料微藻供應不足的現象,為緩解氣候急遽變化對文蛤養殖造成之衝擊,同時提升文蛤活存及生產光電綠能,有效增加單一養殖面積之生產效能。本試驗在覆蓋光電板之文蛤池中測定水溫變化及池水微藻組成多樣性,並從文蛤養殖池採集及分離微藻,進一步試驗所採集之微藻對高低溫耐性及文蛤養殖成效。試驗結果遮蔽率0%文蛤池水溫最大溫差數值為11.19℃,約為遮蔽率40%及70%之文蛤池水溫差的二倍,顯示光電板覆蓋養殖池確實可穩定池水溫度,文蛤養殖池採集分離之微藻培養於高溫環境增長表現較佳,高溫培養每毫升最高細胞數分別為圓篩藻 (Coscinodiscus sp.) 43.42萬、繭形藻 (Amphiprora sp.) 77.10萬、綠球藻 (Chlorella sp.) 978.51萬及角刺藻 (Chaetoceros sp.) 370.08萬,各組數值皆高於低溫培養之細胞數。文蛤池上方覆蓋光電板可穩定養殖環境,且維持水中生態微藻組成多樣性,較易生產文蛤攝食之矽藻,可有效提升文蛤養殖成效。

摘要abstract(英)


Extreme climate changes have resulted in poor microalgae proliferation in recent years, resulting in an insufficient supply of live food microalgae available to Taiwan's hard clam (Meretrix lusoria) farming industry. To alleviate the impacts of rapid climate changes on the hard clam farming industry, improve the survival of hard clams, and produce photovoltaic green energy, this experiment used solar photovoltaic panels to cover hard clam culture ponds, enhancing the production efficiency of each pond unit. The hard clam culture ponds were covered with solar photovoltaic panels featuring different shadow ratios, and the temperature changes and diversity of microalgae compositions in the hard clam pond water were measured. The microalgae were collected and separated from the hard clam culture ponds and further tested for high- and low-temperature tolerance and the effectiveness of hard clam cultivation was evaluated. The test results showed that the use of solar photovoltaic panels to cover hard calm cultivation ponds stabilized changes in the water temperature. The maximum difference in water temperatures measured in hard clam ponds without cover was 11.19°C, which was nearly twice the temperature differences measured in the hard clam ponds covered with photovoltaic panels providing 40% and 70% shading. The microalgae collected and separated from the hard clam cultivation ponds displayed better proliferation under high-temperature environments. The highest microalgae cell populations per milliliter were measured in the high-temperature culture, at 434,200 for Coscinodiscus sp., 771,000 for Amphiprora sp., 9.7851 million for Chlorella sp., and 3.7708 million for Chaetoceros sp., which were higher than the populations measured in the low-temperature culture. These results indicated that hard clam ponds could be covered by solar photovoltaic panels to stabilize the cultivation environment, maintain the ecological diversity of the microalgae composition in the water, and produce more diatoms to feed hard clams while simultaneously improving the cultivation efficiency of hard clams.