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Structural changes in the digestive glands of larval Antarctic krill (Euphausia superba) during starvation
Citation
Yoshida, T and Kawaguchi, S and Meyer, B and Virtue, P and Penschow, J and Nash, G, Structural changes in the digestive glands of larval Antarctic krill (Euphausia superba) during starvation, Polar Biology, 32, (3) pp. 503-507. ISSN 0722-4060 (2009) [Refereed Article]
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Copyright Statement
The original publication is available at www.springerlink.com
Official URL: http://www.springerlink.com
DOI: doi:10.1007/s00300-008-0569-y
Abstract
The effects of starvation on ultrastructure of
digestive gland cells were studied in furcilia larvae of Antarctic
krill (Euphausia superba: hereafter krill). Under laboratory
conditions, larvae were starved for 0, 5, 10, 15, 20
and 25 days, and their R-cells were investigated by transmission
electron microscope. R-cells are thought to play a
role in the storage and absorption of nutrients. In fed larvae,
numerous mitochondria scattered homogenously, and
densely packed microvilli were observed on the apical surface
of R-cells. After 5 days of starvation, mitochondria
were swollen and were found concentrated in the apical
region in R-cells. A decrease in cell volume and an increase
in thickness of the basal lamina with many irregular infoldings
were observed after 1015 days of starvation. Lipid
droplets were rarely found in the R-cells regardless of
whether larvae had been fed or starved suggesting an
inability to store lipid. Without the ability to store energy in
the form of lipid, survival would be dependant on sourcing
continuous food until maturation.
Item Details
Item Type: | Refereed Article |
---|---|
Research Division: | Biological Sciences |
Research Group: | Zoology |
Research Field: | Invertebrate biology |
Objective Division: | Environmental Management |
Objective Group: | Coastal and estuarine systems and management |
Objective Field: | Assessment and management of coastal and estuarine ecosystems |
UTAS Author: | Yoshida, T (Mr Toshihiro Yoshida) |
UTAS Author: | Virtue, P (Associate Professor Patti Virtue) |
ID Code: | 54901 |
Year Published: | 2009 |
Web of Science® Times Cited: | 7 |
Deposited By: | IASOS |
Deposited On: | 2009-03-02 |
Last Modified: | 2015-02-05 |
Downloads: | 0 |
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