Effects of sediment burial on grass carp, Ctenopharyngodon idella (Valenciennes,1844), eggs

Journal of Applied Ichthyology
By: , and 

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Abstract

It is thought that grass carp (Ctenopharyngodon idella) eggs must remain suspended in the water column in order to hatch successfully. Using sand, the effects of varying sediment levels on grass carp eggs were tested at different developmental states and temperatures. Survival was high (15–35%, depending on temperature and trial) in the unburied treatment where eggs rested on a sand bed but were not covered by sediment. Survival was lower in the partial burial (5–10%) and very low (0–4%) in the full burial treatment. In all treatments, delayed hatching (organisms remaining in membranes past the stage of hatching competence) was noted. Deformities such as missing heads and pericardial edema occurred at high rates in the partial and full burials. Eggs that come in contact with the benthos and are resuspended in the water column should be considered in embryonic drift models.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Effects of sediment burial on grass carp, Ctenopharyngodon idella (Valenciennes,1844), eggs
Series title Journal of Applied Ichthyology
DOI 10.1111/jai.12918
Volume 31
Issue 6
Year Published 2015
Language English
Publisher Wiley
Contributing office(s) Columbia Environmental Research Center
Description 7 p.
First page 1120
Last page 1126
Online Only (Y/N) N
Additional Online Files (Y/N) N
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