| XU Zhaoli. 2009. Statistical analysis on ecological adaptation of pelagic Amphipoda in the East China Sea. Acta Oceanologica Sinica, (6):61－69 |
| Statistical analysis on ecological adaptation of pelagic Amphipoda in the East China Sea |
| Statistical analysis on ecological adaptation of pelagic Amphipoda in the East China Sea |
| Received:September 08, 2008 Revised:March 13, 2009 |
| DOI： |
| Key words:East China Sea zooplankton Amphipoda ecological adaptation optimal temperature optimal salinity |
| 中文关键词: East China Sea zooplankton Amphipoda ecological adaptation optimal temperature optimal salinity |
| 基金项目:The China Major Research Plan of the National Natural Science Foundation of China under contract No.90511005 and "908" Project under contract No. 908-02-01-03. |
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| Abstract: |
| This article studied the diversity of Amphipoda's environmental adaptation using statistic methodology based on the seasonal investigation data obtained from the East China Sea waters (23°30'-33°N, 118°30'-128°E) from 1997 to 2000. Fifty-four Amphipoda species were identified:among which eight species could stand a temperature difference over 10℃ and eight species could tolerate the temperature gap ranged from 5 to 10℃; while only six species could stand the salinity fluctuation more than 5. Based on above facts as well as calculated optimal temperature and salinity we divided all Amphipoda species into four groups:(1) eurythermic and euryhalinous species including Lestrigonus schizogeneios, L. macrophthalmus, Tetrathyrus forcipatus, L. bengalensis and Hyperioides sibaginis; (2) temperate-warm species containing Hyperoche medusarum, Parathemisto gaudichaudi, Themisto japonica and Hyperia galba; (3) oceanic tropical species consisted of Oxycephalus clausi, Lycaea pulex, Eupronoe minuta, Simorhychotus antennarius, O. poreelus, Platyscelus ovoides and Rhabdosoma ahitei; (4) subtropical species involving one nearshore subtropical water species (Corophium uenoi) and 37 offshore subtropical ones. Compared with other zooplankton such as Euphausia and Chaetognatha, Amphipoda was characterized by low dominance but wide distribution in the East China Sea, and this could be ascribed to its high adaptation diversity. |
| 中文摘要: |
| This article studied the diversity of Amphipoda's environmental adaptation using statistic methodology based on the seasonal investigation data obtained from the East China Sea waters (23°30'-33°N, 118°30'-128°E) from 1997 to 2000. Fifty-four Amphipoda species were identified:among which eight species could stand a temperature difference over 10℃ and eight species could tolerate the temperature gap ranged from 5 to 10℃; while only six species could stand the salinity fluctuation more than 5. Based on above facts as well as calculated optimal temperature and salinity we divided all Amphipoda species into four groups:(1) eurythermic and euryhalinous species including Lestrigonus schizogeneios, L. macrophthalmus, Tetrathyrus forcipatus, L. bengalensis and Hyperioides sibaginis; (2) temperate-warm species containing Hyperoche medusarum, Parathemisto gaudichaudi, Themisto japonica and Hyperia galba; (3) oceanic tropical species consisted of Oxycephalus clausi, Lycaea pulex, Eupronoe minuta, Simorhychotus antennarius, O. poreelus, Platyscelus ovoides and Rhabdosoma ahitei; (4) subtropical species involving one nearshore subtropical water species (Corophium uenoi) and 37 offshore subtropical ones. Compared with other zooplankton such as Euphausia and Chaetognatha, Amphipoda was characterized by low dominance but wide distribution in the East China Sea, and this could be ascribed to its high adaptation diversity. |
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