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Histological studies of damage by pod-sucking bugs (Heteroptera: Coreoidea) associated with cowpea Vigna unguiculata ssp. unguiculata in Nigeria

Histological studies were conducted on cowpea pods fed upon by the coreoid pod-sucking bugs, Anoplocnemis curvipes (Fabricius), Clavigralla tomentosicollis Stå;l, C. shadabi Dolling, Riptortus dentipes (Fabricius) and Mirperus jaculus (Thunberg). Various degrees of tissue and cellular disruption wer...

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Published in:Bulletin of entomological research 2006-08, Vol.96 (4), p.439-444
Main Authors: Soyelu, O.L., Akingbohungbe, A.E.
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description Histological studies were conducted on cowpea pods fed upon by the coreoid pod-sucking bugs, Anoplocnemis curvipes (Fabricius), Clavigralla tomentosicollis Stå;l, C. shadabi Dolling, Riptortus dentipes (Fabricius) and Mirperus jaculus (Thunberg). Various degrees of tissue and cellular disruption were apparent, especially in the brachysclereids. They were manifested in terms of plasmolysis, cell enlargement and cell wall disintegration depending on the coreoid species involved. The feeding site and its periphery had all the cells of the brachysclereids plasmolysed, with the parenchyma having broken cell walls in the case of A. curvipes. Riptortus dentipes and M. jaculus showed similar patterns of feeding activity but less extensive levels of damage. The Clavigralla spp., however, caused cell enlargement in the brachysclereids, and broken cell walls in both the brachysclereids and the parenchyma. Damage symptoms were observed in cells far away from the feeding sites of the bugs, suggesting the possibility of sucrase activity which has been reported to cause osmotic pump feeding in the Coreidae.
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1475-2670
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source Cambridge Journals Online
subjects Adults
Alydidae
Animals
Anoplocnemis curvipes
Cells
Clavigralla shadabi
Clavigralla tomentosicollis
Coreidae
cowpea
cowpeas
damage symptoms
Fabaceae - anatomy & histology
Fabaceae - parasitology
Feeding Behavior - physiology
feeding damage
food plants
Hemiptera
Heteroptera - physiology
histopathology
Mirperus jaculus
Nigeria
phytophagous insects
plant damage
plant tissues
pods
Riptortus dentipes
Short Communication
Vigna unguiculata
Vigna unguiculata subsp. unguiculata
title Histological studies of damage by pod-sucking bugs (Heteroptera: Coreoidea) associated with cowpea Vigna unguiculata ssp. unguiculata in Nigeria
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