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The Life Cycle of Mononchoides Fortidens (Nematoda: Diplogasteroidea) With Emphasis On Gonad Development

The Life Cycle of Mononchoides Fortidens (Nematoda: Diplogasteroidea) With Emphasis On Gonad... THE LIFE CYCLE OF MONONCHOIDES FORTIDENS (NEMATODA: DIPLOGASTEROIDEA) WITH EMPHASIS ON GONAD DEVELOPMENT BY Q. TAHSEEN, M. S. JAIRAJPURI and I. AHMAD Section of Nematology, Department of Zoology, Aligarh Muslim University, Aligarh-202002, India Mononchoides fortidens reproduced by amphimixis. Smooth, elongate eggs measuring 60- 80 x 35-45 µm were laid in single-cell stage. Embryonic and post-embryonic development lasted for 16-20 h and 3-6 days respectively. Sexes were first distinguished during second moulting by the anterior elongation of primordium in males and anterior as well as posterior elongation in females. The aggregation of cells dorsal to the rectum in males represented the site of spicule formation. In females specialized ventral chord nuclei on the mid-ventral side of genital primor- dium formed the vagina. A flexure developed first in the third stage male, and later in fourth stage females. The life cycle from egg to adult was completed in 4-7 days. Keywords: nematode biology, development, reproduction, embryology. Studies of the diplogasterids are mainly of their predatory behaviour. Aspects of reproduction and developmental biology were studied by Trian- taphyllou and Hirschmann (1964), Pillai & Taylor (1968) and Hechler (1970). The life cycles of Mesodiplogaster lheritieri and Eudiplogaster aphodii were later studied by http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

The Life Cycle of Mononchoides Fortidens (Nematoda: Diplogasteroidea) With Emphasis On Gonad Development

Tahseen, Q.; Jairajpuri, M.S.; Ahmad, I.
Nematologica , Volume 36 (1-4): 8 – Jan 1, 1990
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/002925990X00400
Publisher site
See Article on Publisher Site

Abstract

THE LIFE CYCLE OF MONONCHOIDES FORTIDENS (NEMATODA: DIPLOGASTEROIDEA) WITH EMPHASIS ON GONAD DEVELOPMENT BY Q. TAHSEEN, M. S. JAIRAJPURI and I. AHMAD Section of Nematology, Department of Zoology, Aligarh Muslim University, Aligarh-202002, India Mononchoides fortidens reproduced by amphimixis. Smooth, elongate eggs measuring 60- 80 x 35-45 µm were laid in single-cell stage. Embryonic and post-embryonic development lasted for 16-20 h and 3-6 days respectively. Sexes were first distinguished during second moulting by the anterior elongation of primordium in males and anterior as well as posterior elongation in females. The aggregation of cells dorsal to the rectum in males represented the site of spicule formation. In females specialized ventral chord nuclei on the mid-ventral side of genital primor- dium formed the vagina. A flexure developed first in the third stage male, and later in fourth stage females. The life cycle from egg to adult was completed in 4-7 days. Keywords: nematode biology, development, reproduction, embryology. Studies of the diplogasterids are mainly of their predatory behaviour. Aspects of reproduction and developmental biology were studied by Trian- taphyllou and Hirschmann (1964), Pillai & Taylor (1968) and Hechler (1970). The life cycles of Mesodiplogaster lheritieri and Eudiplogaster aphodii were later studied by

Journal

Nematologica – Brill

Published: Jan 1, 1990

Keywords: reproduction; embryology; development; nematode biology

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