Efecto de la calidad del agua de criaderos de mosquitos (Diptera: Culicidae) sobre la patogenicidad e infectividad de las zoosporas del hongo Leptolegnia chapmanii (Straminipila: Peronosporomycetes)
Rev. biol. trop
;
57(1/2): 371-380, March-June 2009. graf, tab
Article
Dans Espagnol
| LILACS
| ID: lil-637725
ABSTRACT
Effect of water quality in mosquito breeding sites on the pathogenicity and infectivity of zoospores from the fungus Leptolegnia chapmanii (Straminipila Peronosporomycetes). The fungus Leptolegnia chapmanii is highly pathogenic to mosquito larvae in Argentina. We studied if physical and chemical characteristics of the water from mosquito breeding sites affect pathogenicity, and the infectivity of zoospores of L. chapmanii. Water samples were taken from pools filled by rains, urban ditches with domestic waste water, pools filled by overflow from Río de la Plata, and flower vases from the Cemetery of La Plata city. Sub-samples of water were analyzed for physical and chemical characteristics, while other sub-samples were used for laboratory bioassays. Containers with 150 ml of water samples, 25 Aedes aegypti larvae, and 2.8 x 105 zoospores of L. chapmanii, were incubated under controlled environment, and larval mortality was recorded after 48 h. There were highly significant differences among mortalities in water from cemetery vases (70.2%), rain pools water (99.5%), and pools with water from Rio de la Plata (95%). There were no significant differences among larval mortalities in water from ditches, rain pools and Río de la Plata pools. Leptolegnia chapmanii was successful as a biological control agent in all kinds of tested water qualities, producing high larval mortality. Rev. Biol. Trop. 57 (1-2) 371-380. Epub 2009 June 30.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Oomycetes
/
Spores fongiques
/
Eau
/
Culicidae
Limites du sujet:
Animaux
Pays comme sujet:
Amérique du Sud
/
Argentine
langue:
Espagnol
Texte intégral:
Rev. biol. trop
Thème du journal:
Biologie
/
Médecine tropicale
Année:
2009
Type:
Article
Pays d'affiliation:
Argentine
Institution/Pays d'affiliation:
Centro de estudios parasitológicos y de vectores CEPAVE, (CCT-CONICET-LA PLATA-UNLP)/AR
/
Universidad Nacional de Rosario/AR
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS