Browsing by Author "Enrico Ruzzier"
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Item Xylosandrus crassiusculus (Motschulsky) (Coleoptera: Curculionidae) and Its Fungal Symbiont Ambrosiella roeperi Associated with Arecanut Kernel Decay in Karnataka, India(2022) Shivaji Hausrao Thube; Thava Prakasa Pandian, R.; Anthara Bhavishya; Merin Babu; Joseph Rajkumar, A.; Muddumadiah Chaithra; Vinayaka Hegde; Enrico RuzzierItem Xylosandrus crassiusculus (Motschulsky) (Coleoptera: Curculionidae) and Its Fungal Symbiont Ambrosiella roeperi Associated with Arecanut Kernel Decay in Karnataka, India(2022) Shivaji Hausrao Thube; Thavaprakaash. N; Bhavishya; Merin Babu; Josephrajkumar, A.; Muddumadiah Chaithra; Vinayaka Hegde; Enrico RuzzierXylosandrus crassiusculus (Coleoptera: Curculionidae: Scolytinae) is reported causing damage to areca palm plantations (Areca catechu L.—Arecaceae) in Karnataka (India). In particular, X. crassiusculus has been observed attacking and successfully reproducing on areca nuts; besides the new host plant record, the data provided here represent the first documented case of spermatophagy for this xyleborine beetle. All infestation symptoms of this polyphagous pest were documented and illustrated. The identity of the scolytid, besides morphologically, was confirmed by its DNA barcoding. Eggs, larvae and pupae were found within the galleries of infested kernels. All galleries of the infested kernels were characterized by the presence of whitish to greyish fungal growth. The fungus was identified as Ambrosiella roeperi, a known symbiont of Xylosandrus crassiusculus. Incidence of this symbiotic insect-fungus complex in the economic part of arecanut, i.e., the kernel, is of serious concern. In a climate change scenario, this beetle with fungal symbionts may pose a serious threat to arecanut production in India and elsewhere.Item Xylosandrus crassiusculus (Motschulsky) on Cocoa Pods (Theobroma cacao L.): Matter of Bugs and Fungi(2022) Shivaji Hausrao Thube; R. Thava Prakasa Pandian; Josephrajkumar, A.; Bhavishya; Nirmal Kumar, B.J.; Dnyaneshwar M. Firake; Vivek Shah; T. N. Madhu; Enrico Ruzzier