title: [Selectivity and tolerance of sea urchin (Hemicentrotus pulcherrimus) to environmental change].
abstract: An experimental ecological study of sea urchin (Hemicentrotus pulcherrimus) sampled from coastal waters of Qingdao was focused on the fundamental ecological factors such as temperature, salinity, light intensity and substratum. The results showed that the suitable ecological range of temperature was from 8 degrees C to 22 degrees C, and the selectivity to temperature was changed with the previous living temperatures. Hemicentrotus pulcherrimus was a kind of stenohaline creature. Its optimum ecological range of salinity was from 30 to 35. The results also showed that Hemicentrotus pulcherrimus liked to select weak light environment (< 50 lux), especially under non-food condition. Hemicentrotus pulcherrimus had the positive substratum-selectivity to coarse sand and the negative substratum-selectivity to silver sand.
authors.affiliation: Department of Marine Fishery, China Ocean University, Qingdao 266003, China. youkai@ouc.edu.cn
authors.forename: Kai
authors.initials: K
authors.lastname: You
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Zeng
authors.forename: Hui
authors.initials: H
authors.lastname: Liu
authors.forename: Xiumei
authors.initials: X
authors.lastname: Zhang
authors.forename: Qun
authors.initials: Q
authors.lastname: Liu
mesh_terms: D000818:Animals; D008027:Light; D012617:Sea Urchins / Q000502:physiology*; D012965:Sodium Chloride / Q000494:pharmacology; D013696:Temperature
chemical_list: D012965:Sodium Chloride