Abstract：
:The burrower bug Scaptocoris castanea is an important soybean and pasture pest in Brazil, with an underground habit feeding directly on the sap of the roots. Underground habit hinders control and knowledge of the biology and physiology of this pest. This study describes the anatomy, histology, ultrastructure and symbionts of the midgut of S. castanea. The midgut of S. castanea is anatomically divided into five regions (ventricles). Ventricles 1-3 are similar between males and females, with cells specialized in digestion and absorption of nutrients, water transport and homeostasis. Ventricle 4 has squamous epithelium forming crypts and harboring bacteria in the lumen. Ventricle 5 of males is small with cells containing apical microvilli and broad basal folds with many openings for hemocoel, while in females, this region of the midgut is well developed and colonized by intracellular bacteria, characterizing bacteriocytes. The main bacteria are Gammaproteobacteria. The results show sexual dimorphism in ventricle 5 of the midgut of S. castanea, with formation of bacteriocytes in the females, while the other regions are involved in digestive processes in both sexes.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Cossolin JFS,Lopes DRG,Martínez LC,Santos HCP,Fiaz M,Pereira MJB,Vivan LM,Mantovani HC,Serrão JEdoi
10.1007/s00441-020-03197-7subject
Has Abstractpub_date
2020-11-01 00:00:00pages
337-349issue
2eissn
0302-766Xissn
1432-0878pii
10.1007/s00441-020-03197-7journal_volume
382pub_type
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