| 释义 |
demersal, a.|dɪˈmɜːsəl|
[f. L. demersus, pa. pple. of dēmergĕre to submerge: see -al.]
Of the eggs of fishes: sinking to the bottom of the sea, deposited at or near the bottom. Of fish, etc.: living near the bottom.
1889Nature 13 June 159/2 The herring with its demersal eggs, fixed firmly to the bottom. 1911Ann. Rept. Sea Fish. 1909 p. vi, in Parl. Papers XXIV, Demersal fish landed from each ‘Area’ of the North Sea. 1915A. Meek in Rep. Dove Mar. Lab. Cullercoats 14 The region where the demersal fry are mainly congregated. 1925Public Opinion 16 Oct. 376/1 This increase was most marked in the bottom living or demersal fish. 1936J. T. Jenkins Fishes Brit. Isles (ed. 2) 9 Practically all freshwater fish lay demersal eggs. 1959New Scientist 7 May 1035/1 Demersal fishes (those caught near the bottom). 1968F. R. H. Jones Fish Migration ii. 13 In the Pacific Ocean, however, demersal eggs are quite common among species whose Atlantic counterparts have pelagic eggs. |