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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44833

Title: Hydrothermal vent effluents affect life stages of the copepod Tisbe sp
Authors: Hans-Uwe Dahms;Li-Chun Tseng;Derek Moo-Chul;Shim;Jiang-Shiou Hwang
Contributors: 國立臺灣海洋大學:海洋生物研究所
Keywords: copepod, hydrothermal vents, survivorship, natural pol-lution, life cycle
Date: 2015-01
Issue Date: 2017-12-01T02:25:21Z
Publisher: Journal of Marine Science and Technology-Taiwan
Abstract: Abstract:We examined the environmental effects of various concen-trations of hydrothermal vent (HV) effluents on growth, re-production, and survivorship of the Tisbe sp. harpacticoid copepod that were retrieved from localities near the vent. Developmental stages (nauplii and copepodids) were exposed to various concentrations of HV effluents in a static renewal culture system. In the survivorship experiments, we tested 3 distinct developmental phases in HV effluent dilutions from 50% to 1%. The HV effluents considerably reduced the sur-vivorship of the naupliar stages at concentrations of >1% (P < 0.05); all nauplii died at concentrations of 25% and 50%. The copepodids were considerably affected at concen-trations of >1% in Tisbe sp. (P < 0.05), and no copepodid survived at 50% (P < 0.01). The adult females died at a 50% concentration in Tisbe sp. The developmental duration was not considerably affected in the naupliar or copepodid phases; however, it exhibited a trend of developmental delay. The naupliar development of Tisbe sp. was substantially delayed at a concentration of 10% (P < 0.01), whereas copepodids and adults only exhibited a trend of delayed development with increasing HV concentration. The endpoint mortality exhib-ited a greater sensitivity to chemical exposure than the end-point development time. The early developmental stages of Tisbe sp. in both traits were more sensitive to HV effluents than advanced stages. Mortality was a useful toxicological endpoint compared that of developmental duration. We dem-onstrated that Tisbe sp. may be used in the monitoring of acute and life cycle effects of natural marine pollution caused by HV effluents.
Relation: 22(1), pp.82-88
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44833
Appears in Collections:[海洋生物研究所] 期刊論文

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