000253117 001__ 253117
000253117 005__ 20180123005750.0
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):

<p class="ds-paragraph">
By depositing this Content ("Content") in AgEcon Search, I agree that I am 
solely responsible for any consequences of uploading this Content to AgEcon 
Search and making it publicly available, and I represent and warrant that:

I am either the sole creator and the owner of the copyrights and all other 
rights in the Content; or, without obtaining another’s permission, I have the 
right to deposit the Content in an archive such as AgEcon Search.

To the extent that any portions of the Content are not my own creation, they 
are used with the copyright holder’s express permission or as permitted by law.
 Additionally, the Content does not infringe the copyrights or other 
intellectual property rights of another, nor does the Content violate any 
laws or another’s rights of privacy or publicity.

The Content contains no restricted, private, confidential, or otherwise 
protected data or information that should not be publicly shared.

I understand that AgEcon Search will do its best to provide perpetual access
 to my Content. In order to support these efforts, I grant the Regents of the
 University of Minnesota ("University"), through AgEcon Search, the following
 non-exclusive, irrevocable, royalty-free, world-wide rights and licenses:

to access, reproduce, distribute and publicly display the Content, in whole
 or in part, in order to secure, preserve and make it publicly available, and

to make derivative works based upon the Content in order to migrate the
 Content to other media or formats, or to preserve its public access.

These terms do not transfer ownership of the copyright(s) in the Content.
 These terms only grant to the University the limited license outlined above.

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$$pGLOBAL_SET
000253117 912__ $$nSubmitted by Greta Thormodson (thorm018@umn.edu) on 2017-02-01T21:02:40Z
No. of bitstreams: 1
Velazquez-Ciomperlik-Rodrigues.pdf: 3226838 bytes, checksum: 2731ba787b93e04d73fe98285dd9d35f (MD5)
000253117 912__ $$nMade available in DSpace on 2017-02-01T21:02:40Z (GMT). No. of bitstreams: 1
Velazquez-Ciomperlik-Rodrigues.pdf: 3226838 bytes, checksum: 2731ba787b93e04d73fe98285dd9d35f (MD5)
  Previous issue date: 2015
000253117 982__ $$gCaribbean Food Crops Society>51st Annual Meeting, July 19-24, 2015, Paramaribo, Suriname
000253117 980__ $$a539