Journal of Tropical Oceanography ›› 2019, Vol. 38 ›› Issue (4): 52-58.doi: 10.11978/2018119CSTR: 32234.14.2018119

• Marine Biology • Previous Articles     Next Articles

The population distribution of Hyale grandicornis in macroalgae canopies of Daya Bay

Hui WANG1,2,Hengxiang LI1,Lu LI1,Yan YAN1()   

  1. 1. South China Sea Institute of Oceanology, Chinese Academy of Sciences, CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Guangzhou 510301, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-11-14 Revised:2019-01-04 Online:2019-07-20 Published:2019-07-21
  • Supported by:
    National Key Research and Development Program (2017YFB0903703); Natural Science Foundation of Guangdong Province (2018A030313136); Guangzhou Science and Technology Planning Project (201707010163)

Abstract:

The gammarid Hyale grandicornis is a common crustacean species in macroalgae along the coastline of China, but the correlation between H. grandicornis and macroalgae is not well known. Two dominant macroalgae species found on coastal rocks of Daya Bay, the green algae Ulva lactuca and the brown algae Sargassum hemiphyllum var. chinense, were used in the experiments. H. grandicornis samples were found in the bush of two macroalgae canopies. The individual number, body size and weight of gammarid H. grandicornis population were higher in the bush of U. lactuca than in S. hemiphyllum var. chinense. The sex ratio and the proportion of females with eggs and the amount of juvenile of gammarid in bush of S. hemiphyllum var. chinense were larger than those in U. lactuca, whereas the body sizes of adults and females with eggs and the volume of eggs were smaller in gammarid from S. hemiphyllum var. chinense. Results demonstrate that the population distribution and production of gammarid H. grandicornis were different in the two macroalgae, which may be affected by the algal phenotype and habitat preference.

Key words: Daya Bay, gammarid, macroalgae, population distribution, production