Comparison of damage to Eucalyptus caused by Amorbus obscuricornis and Gelonus tasmanicus
Amorbus obscuricornis (Westwood) and Gelonus tasmanicus (Le Guillou) (Heteroptera: Coreidae) are specific to Eucalyptus (Myrtaceae). A. obscuricornis feeds almost exclusively upon apical shoots and causes a characteristic wilting and necrosis. By comparison, the feeding activities of G. tasmanicus r...
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| Veröffentlicht in: | Entomologia experimentalis et applicata 1997-02, Vol.82 (2), p.175-180 |
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| creator | Steinbauer, M. J. Taylor, G. S. Madden, J. L. |
| description | Amorbus obscuricornis (Westwood) and Gelonus tasmanicus (Le Guillou) (Heteroptera: Coreidae) are specific to Eucalyptus (Myrtaceae). A. obscuricornis feeds almost exclusively upon apical shoots and causes a characteristic wilting and necrosis. By comparison, the feeding activities of G. tasmanicus result in no obvious phytotoxicosis. Salivary gland extracts from both species exhibited sucrase activity but no pectinmethylesterase (PME) activity. Saliva from A. obscuricornis also exhibited considerable oxidase activity. Sucrase activity was significantly higher in extracts derived from G. tasmanicus than from A. obscuricornis, but this could not explain the observed differences in phytotoxic symptoms. It is suggested that differences in plant damage are attributable to the site of feeding activity (i.e. young versus mature tissue), which predetermines the reactivity of host tissues, and/or the quantity of salivary enzymes injected. |
| doi_str_mv | 10.1046/j.1570-7458.1997.00128.x |
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It is suggested that differences in plant damage are attributable to the site of feeding activity (i.e. young versus mature tissue), which predetermines the reactivity of host tissues, and/or the quantity of salivary enzymes injected.</description><identifier>ISSN: 0013-8703</identifier><identifier>EISSN: 1570-7458</identifier><identifier>DOI: 10.1046/j.1570-7458.1997.00128.x</identifier><identifier>CODEN: ETEAAT</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>Biological and medical sciences ; comportement alimentaire ; Coreidae ; damage ; danos ; degat ; enzimas ; enzyme ; enzymes ; Eucalyptus ; feeding habits ; Fundamental and applied biological sciences. Psychology ; habitos alimentarios ; Hemiptera ; Phytopathology. Animal pests. Plant and forest protection ; phytotoxicoses ; Protozoa. 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J.</creatorcontrib><creatorcontrib>Taylor, G. S.</creatorcontrib><creatorcontrib>Madden, J. L.</creatorcontrib><creatorcontrib>Cooperative Research Centre for Temperate Hardwood Forestry, Hobart, Tas. (Australia)</creatorcontrib><title>Comparison of damage to Eucalyptus caused by Amorbus obscuricornis and Gelonus tasmanicus</title><title>Entomologia experimentalis et applicata</title><description>Amorbus obscuricornis (Westwood) and Gelonus tasmanicus (Le Guillou) (Heteroptera: Coreidae) are specific to Eucalyptus (Myrtaceae). A. obscuricornis feeds almost exclusively upon apical shoots and causes a characteristic wilting and necrosis. By comparison, the feeding activities of G. tasmanicus result in no obvious phytotoxicosis. Salivary gland extracts from both species exhibited sucrase activity but no pectinmethylesterase (PME) activity. Saliva from A. obscuricornis also exhibited considerable oxidase activity. Sucrase activity was significantly higher in extracts derived from G. tasmanicus than from A. obscuricornis, but this could not explain the observed differences in phytotoxic symptoms. It is suggested that differences in plant damage are attributable to the site of feeding activity (i.e. young versus mature tissue), which predetermines the reactivity of host tissues, and/or the quantity of salivary enzymes injected.</description><subject>Biological and medical sciences</subject><subject>comportement alimentaire</subject><subject>Coreidae</subject><subject>damage</subject><subject>danos</subject><subject>degat</subject><subject>enzimas</subject><subject>enzyme</subject><subject>enzymes</subject><subject>Eucalyptus</subject><subject>feeding habits</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>habitos alimentarios</subject><subject>Hemiptera</subject><subject>Phytopathology. Animal pests. Plant and forest protection</subject><subject>phytotoxicoses</subject><subject>Protozoa. Invertebrates</subject><subject>Records, symptoms, damages, economic importance, population surveys</subject><subject>saliva</subject><subject>salivary enzymes</subject><subject>salive</subject><issn>0013-8703</issn><issn>1570-7458</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNqNkU1v1DAQhi1EJZaWv4B8QNwSbMeOHYnLsizbolV74KucRo7jVF6SeGsnYvff4yXVnnuyNfO8M9IzCGFKckp4-WGXUyFJJrlQOa0qmRNCmcoPL9Di3HiJFqlaZEqS4hV6HeOOECJlRRfo98r3ex1c9AP2LW50rx8sHj1eT0Z3x_04RWz0FG2D6yNe9j7UqeLraKbgjA-Di1gPDd7Yzg-pM-rY68GZKV6hi1Z30b55ei_Rjy_r76vrbHu3uVktt5nhiqqskaYsJTFMcCWM1UoV1KiSEsUVp4YwIau25A1v2rohplZMKt5WVFjTlMKI4hK9n-fug3-cbByhd9HYrtOD9VMEKiomGVcJVDNogo8x2Bb2wfU6HIESOLmEHZyUwUkZnFzCf5dwSNF3Tzt0TFraoAfj4jnPREUpYwn7OGN_XWePzx4P6_UyfVI8m-MujvZwjuvwB0pZSAG_bjfw6eu3z_er-5-wTfzbmW-1B_2Qjgi32zRYpeuyUvLiH-bPn7I</recordid><startdate>199702</startdate><enddate>199702</enddate><creator>Steinbauer, M. J.</creator><creator>Taylor, G. S.</creator><creator>Madden, J. L.</creator><general>Blackwell Science Ltd</general><general>Blackwell</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7SS</scope><scope>C1K</scope></search><sort><creationdate>199702</creationdate><title>Comparison of damage to Eucalyptus caused by Amorbus obscuricornis and Gelonus tasmanicus</title><author>Steinbauer, M. J. ; Taylor, G. S. ; Madden, J. L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4818-d7c6670c25485cea8831c861084841c02579f64d4dfbd0cb82784f915ecd65c53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Biological and medical sciences</topic><topic>comportement alimentaire</topic><topic>Coreidae</topic><topic>damage</topic><topic>danos</topic><topic>degat</topic><topic>enzimas</topic><topic>enzyme</topic><topic>enzymes</topic><topic>Eucalyptus</topic><topic>feeding habits</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>habitos alimentarios</topic><topic>Hemiptera</topic><topic>Phytopathology. Animal pests. Plant and forest protection</topic><topic>phytotoxicoses</topic><topic>Protozoa. Invertebrates</topic><topic>Records, symptoms, damages, economic importance, population surveys</topic><topic>saliva</topic><topic>salivary enzymes</topic><topic>salive</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Steinbauer, M. J.</creatorcontrib><creatorcontrib>Taylor, G. S.</creatorcontrib><creatorcontrib>Madden, J. L.</creatorcontrib><creatorcontrib>Cooperative Research Centre for Temperate Hardwood Forestry, Hobart, Tas. 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(Australia)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of damage to Eucalyptus caused by Amorbus obscuricornis and Gelonus tasmanicus</atitle><jtitle>Entomologia experimentalis et applicata</jtitle><date>1997-02</date><risdate>1997</risdate><volume>82</volume><issue>2</issue><spage>175</spage><epage>180</epage><pages>175-180</pages><issn>0013-8703</issn><eissn>1570-7458</eissn><coden>ETEAAT</coden><abstract>Amorbus obscuricornis (Westwood) and Gelonus tasmanicus (Le Guillou) (Heteroptera: Coreidae) are specific to Eucalyptus (Myrtaceae). A. obscuricornis feeds almost exclusively upon apical shoots and causes a characteristic wilting and necrosis. By comparison, the feeding activities of G. tasmanicus result in no obvious phytotoxicosis. Salivary gland extracts from both species exhibited sucrase activity but no pectinmethylesterase (PME) activity. Saliva from A. obscuricornis also exhibited considerable oxidase activity. Sucrase activity was significantly higher in extracts derived from G. tasmanicus than from A. obscuricornis, but this could not explain the observed differences in phytotoxic symptoms. It is suggested that differences in plant damage are attributable to the site of feeding activity (i.e. young versus mature tissue), which predetermines the reactivity of host tissues, and/or the quantity of salivary enzymes injected.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><doi>10.1046/j.1570-7458.1997.00128.x</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Biological and medical sciences comportement alimentaire Coreidae damage danos degat enzimas enzyme enzymes Eucalyptus feeding habits Fundamental and applied biological sciences. Psychology habitos alimentarios Hemiptera Phytopathology. Animal pests. Plant and forest protection phytotoxicoses Protozoa. Invertebrates Records, symptoms, damages, economic importance, population surveys saliva salivary enzymes salive |
| title | Comparison of damage to Eucalyptus caused by Amorbus obscuricornis and Gelonus tasmanicus |
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