Laboratory evaluation of Mesocyclops annulatus (Wierzejski, 1892) (Copepoda: Cyclopidea) as a predator of container-breeding mosquitoes in Argentina
Mem. Inst. Oswaldo Cruz
;
97(6): 835-838, Sept. 2002. tab, graf
Article
Dans Anglais
| LILACS
| ID: lil-320140
ABSTRACT
In laboratory bioassays we tested the predatory capacity of the copepod Mesocyclops annulatus on Aedes aegypti and Culex pipiens larvae. A single adult female of M. annulatus caused 51.6 percent and 52.3 percent mortality of 50 first instar larvae of Ae. aegypti and Cx. pipiens respectively, in a 72 h test period. When alternative food was added to the containers, mortality rates declined to 16 percent and 10.3 percent for Ae. aegypti and Cx. pipiens respectively. When 50 first instar larvae of each of the two mosquito species tested were placed together with a single adult female of M. annulatus, mortality rates were 75.5 percent for Ae. aegypti larvae and 23.5 percent for Cx. pipiens larvae in a three day test period. Different density of adult females of M. annulatus ranged from 5 to 25 females produced mortality rates of Ae. aegypti first instar larvae from 50 percent to 100 percent respectively. When a single adult female of M. annulatus was exposed to an increasing number of first-instar Ae. aegypti larvae ranging from 10 to 100, 100 percent mortality was recorded from 1 to 25 larvae, then mortality declined to 30 percent with 100 larvae. The average larvae killed per 24 h period by a single copepod were 29
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Comportement prédateur
/
Réservoirs de maladies
/
Lutte contre les insectes
/
Crustacea
/
Vecteurs insectes
/
Culicidae
Limites du sujet:
Animaux
Pays comme sujet:
Amérique du Sud
/
Argentine
langue:
Anglais
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
Médecine tropicale
/
Parasitologie
Année:
2002
Type:
Article
Pays d'affiliation:
Argentine
Institution/Pays d'affiliation:
Centro de Estudios Parasitológicos y de Vectores/AR
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