Ingestion and Utilization of Microalgae with Different Characteristics by Pearl Oyster Pinctada fucata Larvae
Zhenghua Deng1,2,3, Wang Zhao1,2,3, Mingqiang Chen1,2,3, Gang Yu 1,2,3 and Yu Wang1,2,3*
1Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization of Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
2Hainan Provincial Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources, Sanya Tropical Fisheries Research Institute, Sanya 572018, China
3Tropical Fisheries Research and Development Center, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Sanya 572018, China
Fig. 1.
Three microalgae species. (A) N. oculata; (B) I. galbana; (C) C. muelleri.
Fig. 2.
The starved larvae which ingested three microalgae species for 1 h at 105 cells/mL, and then digested these in the filtered fresh seawater. (A) starved larvae ingested N. oculata; (B) starved larvae ingested I. galbana; (C) starved larvae did not ingest C. muelleri; (D) microalgae in the stomach were digested; (E) larvae were had finished digestion; nan, N. oculata; iso. I, galbana; emp, empty stomach; sto, stomach; dig, digestive diverticula.
Fig. 3.
Changes of microalgae area in the stomachs of larvae of different dph. A, 2 dph; B, 8 dph; C, 14 dph; D, 20 dph.
Fig. 4.
The effects of growth and survival rates of larvae when fed N. oculata and I. galbana, respectively. (A) The effect of growth when fed N. oculata and I. galbana, respectively; (B) The effect of survival rates when fed N. oculata and I. galbana, respectively.