Gaseous Requirements for Postparasitic Development of Romanomermis culicivorax
Abstract
The development of postparasitic stages of Romanomermis culicivorax was studied under various concentrations of oxygen and carhon dioxide. The nematode developed poorly if only nitrogen was supplied; only one-third molted and all died eventually. In the presence of 5% CO[sub2] - 95% N[sub2], development was normal; most nematodes molted and oviposited with respective mean developmental times of 32 and 50 d. Addition of 0.2% O[sub2] stimulated development; molting and oviposition commenced at days 18 and 41, respectively. There was an additional stimulation of development by increasing amounts of O[sub2] up to 1%, but concentrations greater than 1% produced no additional stimulation. Carbon dioxide was required for development after exsheathment under anaerobic conditions or O[sub2] concentrations less than 1%. Oxygen or CO[sub2] were not required for embryological development or egg hatch. It is suggested that post-parasitic stages function as facultative anaerobes, Key words: Mermithidae, nematoda, oxygen, carbon dioxide, biological control.Downloads
Published
Issue
Section
License
Copyright and Permissions
All material published by the Society of Nematologists (SON), except for papers prepared by United States and Canadian government employees, is copyrighted and protected under the U.S. copyright law. Under the Copyright Act of 1976, the term of copyright for materials registered by an organization is 75 years from the date first published. Before publishing any manuscript, SON requires that authors transfer full and complete ownership of any copyright to SON by signing a JON Page Charge/Copyright Form (.pdf). SON then registers the copyright. Subsequent use of published materials requires written permission from the SON and may be obtained by contacting the current Editor-in-Chief and state where and how the material will be used.
The author warrants that the article is an original work not published elsewhere in whole or in part, except in abstract form, and that the author has full power to make this grant. If portions of the article have been published previously, then the author warrants that permission has been obtained from the copyright holder and the author will submit a copy of the permission release with this copyright transfer form.
SON shall claim no proprietary right other than copyright. Authors and coauthors retain the right to revise, adapt, modify, or otherwise use all or part of the article in future works of the author(s), such as press releases, lectures, and reviews, provided that all such use is for the personal noncommercial benefit of the author(s). All patent rights are retained by the author(s).
