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Ultrastructure of the Tertiary Envelope of the Cyst of the Tadpole Shrimp Triops longicaudatus (Branchiopoda; Notostraca)

Published online by Cambridge University Press:  02 July 2020

James R. Rosowski ,
Terry L. Bartels ,
James F. Colburn ,
Jannell L. Colton ,
Denton Belk  and
Kit W. Lee
James R. Rosowski
Affiliation:
School of Biological Sciences, University of Nebraska-Lincoln, NE68588-0118
Terry L. Bartels
Affiliation:
School of Biological Sciences, University of Nebraska-Lincoln, NE68588-0118
James F. Colburn
Affiliation:
School of Biological Sciences, University of Nebraska-Lincoln, NE68588-0118
Jannell L. Colton
Affiliation:
School of Biological Sciences, University of Nebraska-Lincoln, NE68588-0118
Denton Belk
Affiliation:
Our Lady of the Lake University of San Antonio, San Antonio, TX78207-4689
Kit W. Lee
Affiliation:
School of Biological Sciences, University of Nebraska-Lincoln, NE68588-0118
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Extract

Tadpole shrimp inhabit temporary freshwater pools and ponds where their occurrence is largely regulated by rainfall events and water temperature. When dry basins are flooded, cysts of Triops imbibe water and hatch to produce rapidly growing, carapaced larvae. While previous studies show anostracan (fairy shrimp) cyst-surface morphology often species specific, few studies illustrate shell ultrastructure of Triops and none has considered T. longicaudatus. Here we examine the shell of T. longicaudatus (Notostraca) and compare its fine structure to other species of Triops and to that of Artemiafranciscana(Anostraca), which we previously studied.

Cysts, produced in culture from Utah broodstock, were purchased from Triops, Inc., 1924 Creighton Rd., Pensacola, FL 32504. Thin sections of cysts were prepared for transmission electron microscopy (TEM) as previously described (Fig. 1). Cysts were also examined with scanning electron microscopy (SEM), dry, whole or fractured (Figs. 2,3), or after imbibition and/or hatching in oxygen saturated, double-distilled water, at 25 ° C.

Type
Biological Structure (Cells, Tissues, Organ Systems)
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 872 - 873
Copyright
Copyright © Microscopy Society of America

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References

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