Action of Heterorhabditis indica (Rhabditida: Heterorhabditidae) strain LPP1 on the reproductive biology of engorged females of Rhipicephalus microplus (Acari: Ixodidae)

被引：10
作者：
da Silva, Edilena Rodrigues [2 ]
de Oliveira Monteiro, Caio Marcio [1 ]
Reis-Menini, Cintia [2 ]
de Azevedo Prata, Marcia Cristina [3 ]
Dolinski, Claudia [4 ]
Furlong, John [3 ]
机构：
[1] Univ Fed Rural Rio de Janeiro, Rio De Janeiro, Brazil
[2] Univ Fed Juiz de Fora, BR-36036330 Juiz De Fora, MG, Brazil
[3] Embrapa Gado Leite, BR-36038330 Juiz De Fora, MG, Brazil
[4] Univ Estadual Norte Fluminense, BR-28013600 Campos Dos Goytacazes, RJ, Brazil
来源：
BIOLOGICAL CONTROL | 2012年 / 62卷 / 03期
关键词：
Entomopathogenic nematodes; Biological control; Cattle tick; ENTOMOPATHOGENIC NEMATODES; SANTA-ROSA; STEINERNEMA; BIOCONTROL;
D O I：
10.1016/j.biocontrol.2012.05.007
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The aim of this study was to evaluate the effect of different concentrations of the entomopathogenic nematode (EPN) Heterorhabditis indica, LPP1, on the reproductive biology of engorged females of Rhipicephalus microplus. For this purpose, 240 females were divided into eight groups with statistically similar weights (p > 0.05). Each group was divided into six subgroups with five females distributed in Petri dishes and exposed to concentrations of 0, 375, 750, 1500, 3000, 6000, 12,000 and 24,000 EPNs/dish. The following biological parameters were evaluated: egg mass weight (mg), egg production index (%EPI), hatching percentage (%) and percentage of control. The action of the nematodes resulted in a significant reduction (p < 0.05) in egg mass weight, hatching percentage and EPI in all treatments groups. The percentage of control in all groups was above 97%, reaching 100% at concentrations of 3000 and 12,000 EPNs/female. Comparison of these results with those reported in other articles evaluating the in vitro pathogenicity of different EPN species against R. microplus shows that under laboratory conditions H. indica LPP1 is the one of most virulent species. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码：140 / 143
页数：4
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