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Title: Effects of TAG/DNA ratio and age of cyprids on post-metamorphic growth and survival in the barnacle balanus amphitrite
Authors: Thiyagarajan, Vengatesen
Harder, Tilmann
Qian, Peiyuan
Keywords: Balanus amphitrite
Chaetoceros gracilis
TAG/DNA ratio
Delayed metamorphosis
Issue Date: 2003
Citation: Journal of the Marine Biological Association of the UK, v. 83, 2003, p. 83-88
Abstract: The nauplii of balanus amphitrite (Cirripedia: Thoracica) were cultured on a daily diet of Chaetoceros gracilis at different concentrations. Both young (zero-day old) and aged (six-day old) cyprids were subject to attachment assays, followed by studies of juvenile growth and survival for two weeks under laboratory conditions. The TAG/DNA ratio of cyprid increased in the following order of food concentrations: 106>105>104 cells ml-1. More than 70% of cyprids metamorphosed in the presence of conspecific settlement factor, irrespective of their TAG/DNA ratio. The juvenile growth and survival in young cyprids surpassed that of the aged cyprids. The TAG/DNA ratio has no significant effect on juvenile growth and survival in both young and aged cyprids. The negative effect of delayed metamorphosis on juvenile growth and survival appeared to be independent of the TAG/DNA ratio.
Rights: © Cambridge University Press 2003. This paper was published in Journal of the Marine Biological Association of the UK, v. 83, 2003, p. 83-88 and is reprinted with permission.
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