Neuromuscular systems in the fifth instar larva of silkworm Bombyx mori (Lepidoptera: Bombycidae): II- Abdominal musculature and its innervation
Journal Title: Journal of Applied and Natural Science - Year 2009, Vol 1, Issue 2
Abstract
The gross organisation of abdominal musculature and its innervation by segmental ganglionic nerves were studied in the fifth instar larva of Bombyx mori. The musculature comprises dorsal, ventral and lateral groups of muscles, represented as external and internal layers. The dorsal group includes musculi dorsales interni mediales (DIM), musculi dorsales externi mediales (DEM), musculi dorsales interni laterals (DIL) and musculi dorsales externi laterales (DEL). The ventral group includes musculi ventrales interni mediales (VIM), musculi ventrales externi mediales (VEM), musculi ventrales interni laterales (VIL) and musculi ventrales externi laterales (vel). The lateral group is represented by musculi laterales interni (LI) and musculi laterales externi (LE). The abdominal muscles are innervated by the dorsal (DN) and ventral (VN) nerves of abdominal ganglia. The DN innervates ventral internal, lateral internal and both dorsal external and internal muscles, while the VN innervates ventral external and lateral muscles. The sensory branches of DN and VN innervate the bodywall in the dorsal and ventral regions respectively with a sort of overlapping in the lateral region. The neuromuscular integration and intersegmental coordination in the abdominal region is discussed with reference to locomotion in the silkworm larva.
Authors and Affiliations
S. Sivaprasad, P. Muralimohan
Keywords
Related Articles
- EP ID EP131463
- DOI 10.31018/jans.v1i2.60
- Views 73
- Downloads 0
Phenotypic (assessment of rice Oryza sativa L.) genotypes for genetic variability and varietal diversity under direct seeded condition
The study on variability and diversity of 32 genotypes of rice (Oryza sativa L.) under direct seeded condition revealed significant variability at 5% level among the genotypes for all the characters. High level of broad...
Plant secondary metabolites (PSMs) of Brassicaceae and their role in plant defense against insect herbivores – A review
The genus Brassica includes economically important oilseed and vegetable plants. A number of insect pests are known to infest these crops and cause significant losses in yield. The plants in the family Brassicaceae have...
Effect of three decade long application of chemical fertilizer and amendments on crop yield under maize - wheat cropping system in an acid alfisol
The results on the effect of three decade long term application of chemical fertilizers and amendments on the yield of continuous maize-wheat crop rotation in an acid alfisol at Palampur revealed that continuous omission...
Behavioural shift of estuarine mudcrab as biomarker of arsenic exposure in Sundarbans estuary of West Bengal
Mudcrab Scylla serrata (Crustacea: Decapoda) in an ecologically and economically important species of Sundarbans Biosphere Reserve was studied for its behaviour under the exposure of toxic arsenic - a common xenobiotic o...
Seed yield of linseed varieties grown as ‘paira’ crop as influenced by dates of sowing
Linseed is an industrial crop cultivated for its seeds, fibres and oil purpose. Linseed crop can met their requirement i.e. moisture and nutritional demand from stored soil moisture and residual fertility status in "uter...