December 2009

The theoretical approach of ecoplexivity focusing on mass outbreaks of phytophagous insects and altering forest functions

  Epidemics of forest insects can have deep impacts on ecosystem functioning and dynamics, with consequences for forest economics and forest carbon feedback to climate change. Despite the many roles that insects fulfil in terrestrial ecosystems, their importance in nutrient cycling is not well known (Kosola et al., 2001). The only instances where herbivores are recognized to have a large effect on ecosystem...

Author(s): Anne le Mellec, Jerzy Karg, Jolanta Slowik, Ignaczy Korczynski, Andrzej Mazur, Timo Krummel, Zdzislaw Bernacki, Holger Vogt-Altena, Gerhard Gerold and Annett Reinhardt

December 2009

Histological study on the body wall of Ascaridia galli (Nematoda)

  The body wall of Ascaridia galli has been investigated using 1-2 µ thick sections and stained with Toludin Blue. It is found to consist of three layers, cuticle, hypodermis or subcuticle and muscle layer. The cuticle in turn consists of three layers namely cortex or upper layer deeply stained with TB, 1.7 µ in thickness, middle layer or matrix 3.15 µ in thickness with no distinct...

Author(s): Zohair I. F. Rahemo and Sagida S. Hussain