Author(s)

Ying Xia, Qiang Hu, Xiping Yuan^*

Dongting Lake Finless Porpoise Conservation Center of Yueyang, Yueyang, China.

Artificial fish nests are set in Lukou section and Hengyang section of Xiangjiang River from March 20 to May 10, 2019. The structure of artificial fish nest is bamboo frame, with the size of 2.5 m × 5.0 m × 4 and a unit frame area of 60 m². A total of 58,201 eggs were collected by 24 monitoring times, of which 30,441 were from Lukou and 27,760 from Hengyang. 3831 fish eggs identify 8 fish species using morphological or molecular biological methods. The results showed that the number of eggs peaked from the 8^th day to the 24^th day after the nest entered the water, and then decreased rapidly. There was significant negative correlation between egg number in per m² fish nest and days of fish nest (P < 0.01). The economic benefits of artificial fish nests were RMB 11.81 million. The artificial fish nest can not only increase the population of fish, but also has significant economic benefits.

Artificial Fish Nest, Enhancement Effects of Fishery Resources, Xiangjiang River

Xia, Y. , Hu, Q. and Yuan, X. (2020) An Evaluation of Artificial Fish Nest for Assessment Enhancement Effects of Fishery Resources of in Xiangjiang River. Journal of Geoscience and Environment Protection, 8, 15-19. doi: 10.4236/gep.2020.86002.