Morphology and composition of the midgut bacterial community of Scaptocoris castanea Perty, 1830 (Hemiptera: Cydnidae)
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Morphology and composition of the midgut bacterial community of Scaptocoris castanea Perty, 1830 (Hemiptera: Cydnidae) Jamile Fernanda Silva Cossolin 1 & Déborah Romaskevis Gomes Lopes 2 & Luis Carlos Martínez 1 & Helen Cristina Pinto Santos 3 & Muhammad Fiaz 4 & Mônica Josene Barbosa Pereira 5 & Lucia Madalena Vivan 6 & Hilário Cuquetto Mantovani 2 & José Eduardo Serrão 1 Received: 5 August 2019 / Accepted: 3 March 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
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. Keywords Burrower bug . Microbiota . Ventricles . Symbionts
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00441-020-03197-7) contains supplementary material, which is available to authorized users. * José Eduardo Serrão [email protected]
Hilário Cuquetto Mantovani [email protected]
Jamile Fernanda Silva Cossolin [email protected]
1
Departamento de Biologia Geral, Universidade Federal de Viçosa, Vicosa, Minas Gerais 36570-000, Brazil
Déborah Romaskevis Gomes Lopes [email protected]
2
Laboratório de Microbiologia de Anaeróbios, Departamento de Microbiologia, Universidade Federal de Viçosa, Vicosa, Minas Gerais 36570-000, Brazil
3
Instituto Federal de Educação, Ciência e Tecnologia de Minas Gerais IFMG - Campus Congonhas, Congonhas, Minas Gerais 36415-000, Brazil
Muhammad Fiaz [email protected]
4
Departamento de Entomologia, Universidade Federal de Viçosa, Vicosa, Minas Gerais 36570-000, Brazil
Mônica Josene Barbosa Pereira [email protected]
5
Laboratório de Entomologia, Universidade do Estado de Mato Grosso, Tangara da Serra, Mato Grosso 78300-000, Brazil
Lucia Madalena Vivan [email protected]
6
Fundação de Apoio a Pesquisa Agropecuária de Mato Grosso, Rondonopolis, MT 78750-360, Brazil
Luis Carlos Martínez [email protected] Helen Cristina Pint
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