000253117 001__ 253117
000253117 005__ 20170829135234.0
000253117 037__ $$a539-2016-38633
000253117 041__ $$aen_US
000253117 260__ $$c2015
000253117 269__ $$a2015
000253117 300__ $$a10
000253117 336__ $$aConference Paper/ Presentation
000253117 520__ $$aThe introduction of Harrisia cactus mealybug (HCM), Hypogeococcus pimgens, in
Puerto Rico causes concern due to its damaging effects to the structure of cacti communities,
eliminating species, and severely compromising plant growth and reproduction of susceptible
native species. HCM is a polyphagous soft scaly insect considered an aggressive pest outside of
its native range of South America. In Puerto Rico, three native species of cacti have been observed
to be heavily infested with this invasive HCM, the natives Pilosocereus royenii, Melocactus
intortus, and the endangered Leptocereus quadricostatus. Recent studies have shown that HCM
affects the growth and survival of P. royenii, but limited information is available about the other
affected species. To understand more about the threat of HCM, greenhouse experiments were
designed to evaluate the pest colonization and to describe the development of galls on the columnar
cactus L. quadricostatus. The experimental design consisted of two groups of E quadricostatus,
infested and non-infested, the infested treatment received twenty crawlers and six females of
HCM. The first signs of successful infestation were observed at 27 days after the initial pest
transfer, while the first signs of gall formation were observed at 97 days. The initial infestation
process was best explained by an exponential growth model (R2=0.93, F=125.4, df 1.9, p-value
< 0.05). This stage can be identified by the formation of a powdery wax-like white spot on the
areole of the cactus. Also four types of gall structure were observed. To our knowledge this is the
first time that the full infestation process and gall development, by HCM has been replicated under
controlled conditions. These results provide a better understanding of the interaction between
HCM and the endangered host plant, and will help to develop more effective management
000253117 542__ $$fLicense granted by Greta Thormodson (thorm018@umn.edu) on 2017-02-01T21:00:17Z (GMT):

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000253117 650__ $$aEnvironmental Economics and Policy
000253117 650__ $$aLand Economics/Use
000253117 6531_ $$aEndangered Cactus Species
000253117 6531_ $$aHypogeococcus pimgens
000253117 6531_ $$aInvasive Species
000253117 6531_ $$aMealybug
000253117 700__ $$aLa Quay-Velazquez, Giomara
000253117 700__ $$aCiomperlik, Matthew
000253117 700__ $$aRodrigues, Jose C. Verle
000253117 773__ $$d2015
000253117 8564_ $$s3226838$$uhttp://ageconsearch.umn.edu/record/253117/files/Velazquez-Ciomperlik-Rodrigues.pdf
000253117 887__ $$ahttp://purl.umn.edu/253117
000253117 909CO $$ooai:ageconsearch.umn.edu:253117$$qGLOBAL_SET
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  Previous issue date: 2015
000253117 982__ $$gCaribbean Food Crops Society>51st Annual Meeting, July 19-24, 2015, Paramaribo, Suriname
000253117 980__ $$a539