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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46209

Title: A new passive plankton trap to quantify the supply of crustacean and molluscan larvae to rocky shores
Authors: Hsi-Nien,Chen
Christopher D.Todd
Gray A.Williams
Benny K.K.Chan
Contributors: 國立臺灣海洋大學:海洋生物研究所
Keywords: Methodology
Larval supply
Date: 2013
Issue Date: 2018-05-07T08:29:33Z
Publisher: Journal of Experimental Marine Biology and Ecology
Abstract: Abstract: Effective in situ plankton traps, which can accurately quantify spatial and temporal variations in larval supply, are a prerequisite for studies of the dynamic interactions between larval delivery, adult population densities and successful larval recruitment of rocky intertidal organisms. Previously designed plankton traps only functioned when either washed by the incoming or receding tide (swash traps), or when submerged (tube traps), and are therefore probably biased in their estimate of larval supply. Here, we assess a new integrative trap design which captures zooplankton and meroplanktonic larval stages under all appropriate tidal conditions, including wave swash and submersion. Deployment on shores in Taiwan showed that the trap captures a diverse array of meroplankton, including gastropod veliger larvae, bivalve larvae, barnacle nauplii and cyprids, and various stages of crab and shrimp larvae. Comparisons of the integrative design with previous swash and tube traps revealed that the latter yielded disproportionately poor larval catches. Catch composition of the integrative trap was, however, similar to contemporaneous samples obtained with a hand-towed plankton net trawl, indicating little selective bias, whereas the swash trap showed some sampling bias, with slightly greater proportions of copepods compared to the plankton net trawl samples. While previous reports have shown tube traps to be effective in quantifying high densities of barnacle larvae in temperate regions with high tidal amplitude and wave action, the integrative design appears optimal for similar studies of intertidal molluscs and crustaceans in environments characterized by low amplitude tides and reduced larval densities.
Relation: 441 pp.481-489
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46209
Appears in Collections:[海洋生物研究所] 期刊論文

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