TY - JOUR
T1 - Host associations of gall-inducing Prodiplosis longifila (Diptera: Cecidomyiidae) from Bolivia:
T2 - Implications for Its Use as a Biological Control Agent for Jatropha gossypiifolia (Euphorbiaceae)
AU - Dhileepan, Kunjithapatham
AU - Neser, Stefan
AU - Rumiz, Damian
AU - Raman, Anantanarayanan
AU - Sharma, Anamika
N1 - Includes bibliographical references.
PY - 2017/12
Y1 - 2017/12
N2 - Based on field host range and damage potential, we explored the prospects of exploiting a gall midge from Jatropha clavuligera Müll. Arg. (Euphorbiaceae) in Bolivia as a "new-association" biological control agent for Jatropha gossypiifolia L. (Euphorbiaceae), a major rangeland weed in Australia. The gall midge, determined morphologically as Prodiplosis longifila Gagné (Diptera: Cecidomyiidae), induces rosette galls, resulting in shoot tip dieback in J. clavuligera in Bolivia. Although P. longifila is reported to occur on a range of crops in the Neotropics, its feeding on J. clavuligera in Bolivia is strikingly different in that it induces rosette galls on its shoots. In other countries, P. longifila larvae feed on leaves, buds, flowers and fruits, with no gall symptoms. There was no evidence of P. longifila-induced galls on crop plants (reported hosts in other countries), other species of Jatropha, or other species of Euphorbiaceae in Bolivia, and in choice tests conducted in the quarantine facility in South Africa. Bolivian entomological records do not report any damage to crops by P. longifila. We propose that P. longifila in Bolivia is possibly a new species restricted to a few closely related species of Jatropha and a part of a cryptic species complex. Based on the susceptibility of J. gossypiifolia to the gall-inducing P. longifila in the field in Bolivia and in quarantine tests in South Africa, we propose that the gall-inducing P. longifila sourced from J. clavuligera in Bolivia is a potential "new-association" biological control agent for J. gossypiifolia in Australia.
AB - Based on field host range and damage potential, we explored the prospects of exploiting a gall midge from Jatropha clavuligera Müll. Arg. (Euphorbiaceae) in Bolivia as a "new-association" biological control agent for Jatropha gossypiifolia L. (Euphorbiaceae), a major rangeland weed in Australia. The gall midge, determined morphologically as Prodiplosis longifila Gagné (Diptera: Cecidomyiidae), induces rosette galls, resulting in shoot tip dieback in J. clavuligera in Bolivia. Although P. longifila is reported to occur on a range of crops in the Neotropics, its feeding on J. clavuligera in Bolivia is strikingly different in that it induces rosette galls on its shoots. In other countries, P. longifila larvae feed on leaves, buds, flowers and fruits, with no gall symptoms. There was no evidence of P. longifila-induced galls on crop plants (reported hosts in other countries), other species of Jatropha, or other species of Euphorbiaceae in Bolivia, and in choice tests conducted in the quarantine facility in South Africa. Bolivian entomological records do not report any damage to crops by P. longifila. We propose that P. longifila in Bolivia is possibly a new species restricted to a few closely related species of Jatropha and a part of a cryptic species complex. Based on the susceptibility of J. gossypiifolia to the gall-inducing P. longifila in the field in Bolivia and in quarantine tests in South Africa, we propose that the gall-inducing P. longifila sourced from J. clavuligera in Bolivia is a potential "new-association" biological control agent for J. gossypiifolia in Australia.
KW - Cryptic species
KW - Field host range
KW - Gall midge
KW - Host specificity
KW - Native-range survey
KW - Weed biological control
UR - http://www.scopus.com/inward/record.url?scp=85038926652&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85038926652&partnerID=8YFLogxK
U2 - 10.1653/024.100.0402
DO - 10.1653/024.100.0402
M3 - Article
AN - SCOPUS:85038926652
SN - 0015-4040
VL - 100
SP - 777
EP - 786
JO - Florida Entomologist
JF - Florida Entomologist
IS - 4
ER -