scholarly journals Developmental significance of D quadrant micromeres 2d and 4d in the oligochaete annelid Tubifex tubifex

2014 ◽  
Vol 58 (6-7-8) ◽  
pp. 445-456 ◽  
Author(s):  
Takashi Shimizu ◽  
Ayaki Nakamoto
Keyword(s):  
Tubifex Tubifex ◽  
Oligochaete Annelid ◽  
Developmental Significance

scholarly journals The ontogeny of nanos homologue expression in the oligochaete annelid Tubifex tubifex

2016 ◽  
Vol 20 (1) ◽  
pp. 32-41 ◽  
Author(s):  
Ki-ichi Mohri ◽  
Ayaki Nakamoto ◽  
Takashi Shimizu
Keyword(s):  
Tubifex Tubifex ◽  
Oligochaete Annelid

Embryonic expression of p68, a DEAD-box RNA helicase, in the oligochaete annelid Tubifex tubifex

2008 ◽  
Vol 8 (6) ◽  
pp. 464-470 ◽  
Author(s):  
Atsuko Oyama ◽  
Hiroshi Yoshida ◽  
Takashi Shimizu
Keyword(s):  
Rna Helicase ◽  
Tubifex Tubifex ◽  
Dead Box ◽  
Oligochaete Annelid

Neuron-glia relationship during the early postembryonic development of the nervous system in some oligochaetes

1978 ◽  
Vol 36 (2) ◽  
pp. 600-601
Author(s):  
Wiktor Djaczenko ◽  
Carmen Calenda Cimmino
Keyword(s):  
Nervous System ◽  
Glial Cells ◽  
Early Period ◽  
Postembryonic Development ◽  
Ruthenium Red ◽  
The Body ◽  
Tubifex Tubifex ◽  
Growth Stages ◽  
Cell Processes ◽  
Cytoplasmic Processes

The simplicity of the developing nervous system of oligochaetes makes of it an excellent model for the study of the relationships between glia and neurons. In the present communication we describe the relationships between glia and neurons in the early periods of post-embryonic development in some species of oligochaetes.Tubifex tubifex (Mull. ) and Octolasium complanatum (Dugès) specimens starting from 0. 3 mm of body length were collected from laboratory cultures divided into three groups each group fixed separately by one of the following methods: (a) 4% glutaraldehyde and 1% acrolein fixation followed by osmium tetroxide, (b) TAPO technique, (c) ruthenium red method.Our observations concern the early period of the postembryonic development of the nervous system in oligochaetes. During this period neurons occupy fixed positions in the body the only observable change being the increase in volume of their perikaryons. Perikaryons of glial cells were located at some distance from neurons. Long cytoplasmic processes of glial cells tended to approach the neurons. The superimposed contours of glial cell processes designed from electron micrographs, taken at the same magnification, typical for five successive growth stages of the nervous system of Octolasium complanatum are shown in Fig. 1. Neuron is designed symbolically to facilitate the understanding of the kinetics of the growth process.

Effects of chitosan on oxidative stress and metallothioneins in aquatic worm Tubifex tubifex (Oligochaeta, Tubificidae)

Chemosphere ◽  
2007 ◽  
Vol 67 (1) ◽  
pp. 167-175 ◽  
Author(s):  
Yahia Y. Mosleh ◽  
Séverine Paris-Palacios ◽  
Mohamed T. Ahmed ◽  
F.M. Mahmoud ◽  
M.A. Osman ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Tubifex Tubifex
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