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Barsagade, Deepak Dewaji,Gharade, Shruti Arvind Korean Society of Sericultural Science 2014 International Journal of Industrial Entomology Vol.29 No.1
The cerebral neurosecretory cells (NSC) constitute four paired groups, medial (MNC), lateral (LNC-I, LNC-II) and posterior (PNC) in the brain of larvae of tasar silkworm Antheraea mylitta (D) Eco-race Bhandara. The MNC is the largest groups of peptidergic neurosecretory cells and are located in the pars intercerebralis region. The transmission electron microscopic (TEM), ultrastructure of the NSC confirmed the presence of mitochondria, endoplasmic reticulum, Golgi bodies, lysosomes and neurosecretory granules. The median neurosecretory cells shows secretory activity and release of secretory products, the neurosecretory granules (NSG) in the axons of NSC as well as the blood sinus.
Deepak Dewaji Barsagade,Ganesh Bhagwat GATHALKAR 한국곤충학회 2016 Entomological Research Vol.46 No.4
A new scientific survey elucidates the preferred attack of stink bug Canthecona furcellata (Wolff.) (Hemiptera: Pentatomidae) on the spinning stage of the tropical tasar silkworm, Antheraea mylitta (Drury) (Lepidoptera: Saturniidae). The silkworm A. mylitta produces an excellent quality of wild silk; however, due to predation by C. furcellata, tasar silk production is reduced. The bug C. furcellata is the most invasive larval predator of A. mylitta and predation is high during early instars as well as the molting stage of the larvae. However, for the first time it is reported that the spinning stage is also preferable for attack by the stink bug. Both the nymphs and adults of C. furcellata attack the spinning silkworm; moreover, stink bug attack is observed in groups under field conditions. It is postulated that feeding preference is due to the concealed, non‐movable and less defensive stage of the tasar larvae during spinning. The predation of C. furcellata includes its approach on target larva of the tasar silkworm during spinning, where it inserts the proboscis inside the larval skin through the moist silk network of newly forming or formed cocoon. Most of the spinning larvae die from the attack and the normal seed cocoon fails to form. The mechano‐ and chemoreceptors, present on the antenna and proboscis of C. furcellata, play an important role in prey locating and the feeding mechanism. The life cycle of C. furcellata is also discussed in the present study.
Ultrastructural Changes In the Midgut During Metamorphosis in Apis Cerana Indica.
Barsagade, Deepak Dewaji,Kelwadkar, Kalpana Madhukar Korean Society of Sericultural Science 2008 International Journal of Industrial Entomology Vol.16 No.1
The midgut epithelium of Indian honey bee Apis cerana indica is consist of digestive cells and small regenerative cells. The regenerative cells are placed in the nests scattered among the digestive cells. During metamorphosis the midgut of Apis cerana indica is remodeled. The larval midgut epithelium and muscular sheath digested partially at the end of larval period and thrown out in the form of debris in the lumen. The new epithelium is formed by the proliferation of the regenerative cells and during pupation reorganization of midgut layer occurs. The ultrastuctural studies shows that the regenerative cells are in contact with degenerative cells by the cytoplasmic extension which have many septed and gap junctions in the fifth instar larvae. In developing pupae reorganization of the midgut epithelium is continued whereas in the pharate adult the midgut wall shows, characteristic of adult midgut epithelium with pycnotic nuclei in some cells.
Barsagade, Deepak Dewaji,Pankule, Sushama Dilip,Tembhare, Dnyaneshwar Bapuji Korean Society of Sericultural Science 2009 International Journal of Industrial Entomology Vol.18 No.2
The egg shell of the tropical tasar silkworm, Antheraea mylitta is formed from the substances secreted by the follicular epithelium during the late vitellogenic stage. TEM study reveals the inner travecular and outer lamellar layer of chorion. The travecular layer is composed of the innermost wax layer, inner and outer chorionic layer. The inner and outer chorionic layers are connected to each other by vertical pillers forming of cavities. The lamellar layer is perforated by the aeropyles. SEM study reveals the differentiation of an anterior surface of the egg shell into four zones-micropylar, edge, aeropyles crown and disc zone. In the mycosis infected eggs the aeropyles and egg-shell surface are fully packed with the hyphae of the fungus, Aspergillus sydowi blocking of plastron respiration and causing the death of developing embryo so that mycosis infected eggs become sterile.
( Deepak Dewaji Barsagade ),( Kalpana Madhukar Kelwadkar ) 한국잠사학회 2008 International Journal of Industrial Entomology Vol.16 No.1
The midgut epithelium of Indian honey bee Apis cerana indica is consist of digestive cells and small regenerative cells. The regenerative cells are placed in the nests scattered among the digestive cells. During metamorphosis the midgut of Apis cerana indica is remodeled. The larval midgut epithelium and muscular sheath digested partially at the end of larval period and thrown out in the form of debris in the lumen. The new epithelium is formed by the proliferation of the regenerative cells and during pupation reorganization of midgut layer occurs. The ultrastuctural studies shows that the regenerative cells are in contact with degenerative cells by the cytoplasmic extension which have many septed and gap junctions in the fifth instar larvae. In developing pupae reorganization of the midgut epithelium is continued whereas in the pharate adult the midgut wall shows, characteristic of adult midgut epithelium with pycnotic nuclei in some cells.
( Deepak Dewaji Barsagade ),( Sushama Dilip Pankule ),( Dnyaneshwar Bapuji Tembhare ) 한국잠사학회 2009 International Journal of Industrial Entomology Vol.18 No.2
The egg shell of the tropical tasar silkworm, Antheraea mylitta is formed from the substances secreted by the follicular epithelium during the late vitellogenic stage. TEM study reveals the inner travecular and outer lamellar layer of chorion. The travecular layer is composed of the innermost wax layer, inner and outer chorionic layer. The inner and outer chorionic layers are connected to each other by vertical pillers forming of cavities. The lamellar layer is perforated by the aeropyles. SEM study reveals the differentiation of an anterior surface of the egg shell into four zones-micropylar, edge, aeropyles crown and disc zone. In the mycosis infected eggs the aeropyles and egg-shell surface are fully packed with the hyphae of the fungus, Aspergillus sydowi blocking of plastron respiration and causing the death of developing embryo so that mycosis infected eggs become sterile.
( Deepak Dewaji Barsagade ),( Shruti Arvind Gharade ) 한국잠사학회 2014 International Journal of Industrial Entomology Vol.29 No.1
The cerebral neurosecretory cells (NSC) constitute four paired groups, medial (MNC), lateral (LNC-I, LNC-II) and posterior (PNC) in the brain of larvae of tasar silkworm Antheraea mylitta (D) Eco-race Bhandara. The MNC is the largest groups of peptidergic neurosecretory cells and are located in the pars intercerebralis region. The transmission electron microscopic (TEM), ultrastructure of the NSC confirmed the presence of mitochondria, endoplasmic reticulum, Golgi bodies, lysosomes and neurosecretory granules. The median neurosecretory cells shows secretory activity and release of secretory products, the neurosecretory granules (NSG) in the axons of NSC as well as the blood sinus.