Ontogenetic divergence of the phytoparasitic nematodesMacroposthonia nainitalensis andM. tenuiannulata (Criconematidae, tylenchia)

Ontogenetic divergence of the phytoparasitic nematodesMacroposthonia nainitalensis andM.... Promorphogenesis, egg cleavage, and gastrulation proceed inMacroposthonia nainitalensis similarly to other phytonematodes of the subclass Tylenchia. Before the onset of gastrulation, the greatest similarity was observed in a descendant of the micromere 2b, which separates macromeres of the third division. Deviations from the general line of development started in this species during embryonal organogenesis with the formation of an external epithelium with a special rough surface layer, which was absent in the embryos of other phytonematodes. In addition, during this period of acceleration, the digestive system developed, while peristaltic changes in body shape appeared at the tadpole stage. Later, somatic muscle development was enhanced in the first instar larvae ofM. nainitalensis, while in the second instar larvae ofMacroposthonia spp., somatic muscle cells were located at an acute angle to the longitudinal body axis. In addition, denticles—microchaetae—appeared in the second to fifth instar larvae of these nematodes. All of these features, which have not been observed in other phytonematodes of the subclass Tylenchia, help the peristaltic crawling ofMacroposthonia spp. In contrast to other Tylenchia, the musculocutaneous sac did not develop inMacroposthonia spp. However, there are similarities in the development of the digestive and genital systems. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Ontogenetic divergence of the phytoparasitic nematodesMacroposthonia nainitalensis andM. tenuiannulata (Criconematidae, tylenchia)

Loading next page...
 
/lp/springer_journal/ontogenetic-divergence-of-the-phytoparasitic-nematodesmacroposthonia-O5T3sfTJM0
Publisher
Nauka/Interperiodica
Copyright
Copyright © 2000 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1007/BF02758822
Publisher site
See Article on Publisher Site

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial