Laboratory and in situ flotation rates of lecithotrophic eggs from the bathyal echinoid Phormosoma placenta

Member of
HBOI Faculty Contributions
Contributors
Young, Craig M.
Cameron, J. Lane
Publisher
Elsevier
Date Issued
1987
Note

The large, lecithotrophic eggs of the bathyal echinothuriid echinoid Phormosoma placenta are positively buoyant both in vitro and in situ to depths of at least 608 m. Eggs attain terminal velocity in less than 5 cm. At constant salinity, flotation rate is related linearly to temperature; eggs move more slowly at lower temperatures. This effect is attributed to increased water viscosity at lower temperatures, not differential changes in egg and water density. Based on an average flotation velocity of 0.42 cm s−1, it is predicted that eggs produced at bathyal depths will reach the surface in approximately 2 days.

Language
English
Type
Text
Genre
article
Extent
12 p.
Subject (Topical)
Echinoida
Deep-sea animals
Sea urchins--Eggs
Deep-sea animals--Reproduction
Echinothuriidae
Eggs--Dispersal
Identifier
3353758
Additional Information
The large, lecithotrophic eggs of the bathyal echinothuriid echinoid Phormosoma placenta are positively buoyant both in vitro and in situ to depths of at least 608 m. Eggs attain terminal velocity in less than 5 cm. At constant salinity, flotation rate is related linearly to temperature; eggs move more slowly at lower temperatures. This effect is attributed to increased water viscosity at lower temperatures, not differential changes in egg and water density. Based on an average flotation velocity of 0.42 cm s−1, it is predicted that eggs produced at bathyal depths will reach the surface in approximately 2 days.
The final published version of this manuscript is available at http://www.sciencedirect.com/science/journal/01980149 and may be cited as: Young, C. M., & Cameron, J. L. (1987). Laboratory and in situ flotation rates of lecithotrophic eggs from the bathyal echinoid Phormosoma placenta. Deep Sea Research Part A. Oceanographic Research Papers, 34(9), 1629-1639. doi:10.1016/0198-0149(87)90112-9
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #449.
Date Backup
1987
Date Text
1987
DOI
10.1016/0198-0149(87)90112-9
Date Issued (EDTF)
1987
Extension


FAU
FAU
admin_unit="FAU01", ingest_id="ing13909", creator="creator:BCHANG", creation_date="2012-10-29 11:51:04", modified_by="super:FAUDIG", modification_date="2014-02-04 12:22:51"

IID
FADT3353758
Issuance
single unit
Organizations
Attributed name: Harbor Branch Oceanographic Institute
Person Preferred Name

Young, Craig M.

creator

Physical Description

pdf
12 p.
PURL
http://purl.flvc.org/FCLA/DT/3353758
Title Plain
Laboratory and in situ flotation rates of lecithotrophic eggs from the bathyal echinoid Phormosoma placenta
URL
http://purl.flvc.org/FCLA/DT/3353758
Origin Information

Elsevier
1987
single unit
Title
Laboratory and in situ flotation rates of lecithotrophic eggs from the bathyal echinoid Phormosoma placenta
Other Title Info

Laboratory and in situ flotation rates of lecithotrophic eggs from the bathyal echinoid Phormosoma placenta