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Osmoregulation in Panagrellus Redivivus and Aphelenchus Avenae 1)

Osmoregulation in Panagrellus Redivivus and Aphelenchus Avenae 1) OSMOREGULATION IN PANAGRELLUS REDIVIVUS AND APHELENCHUS AVENAE 1) BY RONALD F. MYERS Entomology & Economic Zoology Department, Rutgers - The State University, New Brunswick, New Jersey, U.S.A. Modifications in volume and salt content of Panagrellus redivivus and Aphelenchus avenae after incubation in distilled water and salt solutions were measured. Decreased water content within P. redivivus caused an internal osmotic pressure increase of about 20% when the NaCl concentration of the incubation fluid was changed from 0.1 to 0.3 molal. In addition, Na and Cl ions added to internal solute produced an osmotic pressure adjustment of approximately 33% of the external fluid. Quantitative analyses of Na, K, Ca, Mg, P, and Cl were performed. The soil solution surrounding free-living and plant-parasitic nematodes fluc- tuates widely due to rain, evaporation, plant action, and other factors, and it con- tains at least traces of every element present in the soil. If nematodes are not insulated from the soil solution by an impermeable cuticle, or unless their cuticle is equally permeable to both water and ions, then osmoregulatory mechanisms must exist that produce an internal equilibrium with this external fluid environ- ment. Since very little data exist concerning osmoregulatory mechanisms in soil http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Osmoregulation in Panagrellus Redivivus and Aphelenchus Avenae 1)

Myers, Ronald F.
Nematologica , Volume 12 (4): 8 – Jan 1, 1966
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529266X00428
Publisher site
See Article on Publisher Site

Abstract

OSMOREGULATION IN PANAGRELLUS REDIVIVUS AND APHELENCHUS AVENAE 1) BY RONALD F. MYERS Entomology & Economic Zoology Department, Rutgers - The State University, New Brunswick, New Jersey, U.S.A. Modifications in volume and salt content of Panagrellus redivivus and Aphelenchus avenae after incubation in distilled water and salt solutions were measured. Decreased water content within P. redivivus caused an internal osmotic pressure increase of about 20% when the NaCl concentration of the incubation fluid was changed from 0.1 to 0.3 molal. In addition, Na and Cl ions added to internal solute produced an osmotic pressure adjustment of approximately 33% of the external fluid. Quantitative analyses of Na, K, Ca, Mg, P, and Cl were performed. The soil solution surrounding free-living and plant-parasitic nematodes fluc- tuates widely due to rain, evaporation, plant action, and other factors, and it con- tains at least traces of every element present in the soil. If nematodes are not insulated from the soil solution by an impermeable cuticle, or unless their cuticle is equally permeable to both water and ions, then osmoregulatory mechanisms must exist that produce an internal equilibrium with this external fluid environ- ment. Since very little data exist concerning osmoregulatory mechanisms in soil

Journal

Nematologica – Brill

Published: Jan 1, 1966

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