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A marine fungus Plectospira dubia n.sp. [Saprolegniaceae], infecting crustacean eggs and small Crustacea

Published online by Cambridge University Press:  11 May 2009

D. Atkins
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Summary

A marine fungus, Plectospira dubia n.sp., has been found infecting crustacean eggs and small Crustacea in the Plymouth Laboratory. It has the following characteristics: mycelium mostly intra-matrical, coarse, hyphae 50–100µ in diameter. Sporangia irregularly inflated, emptying by efferent hyphae of variable length and frequently of irregular diameter; sometimes proliferous; wall persistent. Zoospores dicystic and dimorphic, but the first swimming stage largely suppressed, the first zoospores mostly encysting within the sporangium after a short period of feeble activity, then swimming in the second stage. The first zoospores pyriform and flagellate (probably biflagellate): in the second motile stage laterally grooved with two laterally inserted flagella. First zoospores about 1oµ long, when encysted 7–8µ in diameter; in the second motile stage 11–12µ long, when encysted 6–7µ. in diameter. Gemmae numerous, spherical, up to 1OOµ. in diameter. Sexual organs so far unknown.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 33 , Issue 3 , October 1954 , pp. 721 - 732
Copyright
Copyright © Marine Biological Association of the United Kingdom 1954

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References

REFERENCES

Atkins, D., 1929. On a fungus allied to the Saprolegniaceae found in the pea-crab Pinnotheres. J. Mar. biol. Ass. U.K., Vol. 16, pp. 203–19.Google Scholar
Atkins, D., 1954a. Further notes on a marine member of the Saprolegniaceae, Leptolegnia marina n.sp., infecting certain invertebrates. J. Mar. biol. Ass. U.K., Vol. 33, pp. 613–25.CrossRefGoogle Scholar
Atkins, D., 1954b. Pythiutn thalassium n.sp. infecting the egg-mass of the pea-crab Pinnotheres pisum. Trans. Brit, mycol. Soc. vol. 37, pt. 4. (In the Press.)Google Scholar
Coker, W. C, 1923. The Saprolegniaceae, with Notes on other Water Molds. University of North Carolina Press.Google Scholar
Coker, W. C. & Matthews, V. D., 1937. Saprolegniales. N. Amer. Flora, Vol. 2, pt. 1.Google Scholar
Couch, J. N., 1931. Observations on some species of water molds connecting Achlya and Dictyuchus. J. Elisha Mitchell sci. Soc, Vol. 46, pp. 225–9.Google Scholar
Drechsler, C., 1927. Two water molds causing tomato rootlet injury. J. agric. Res., Vol. 34, pp. 287–96.Google Scholar
Drechsler, C., 1929. The beet water mold and several related root parasites. J. agric. Res., Vol. 38, pp. 309–61.Google Scholar