Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)

Obscure mealybug, Pseudococcus viburni (Signoret), is a cosmopolitan pest that causes damage by suction of vascular juices and the production of honeydew, as well as for being a quarantine insect. Within control options, entomopathogenic fungi are a good alternative, nevertheless, more research is n...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Pereira,Aldo, Casals,Pedro, Salazar,Ana María, Gerding,Marcos
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2011
Materias:	Lethal dose lethal time biological control entomopathogenic fungus fecundity fertility longevity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400009
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-58392011000400009
record_format	dspace
spelling	oai:scielo:S0718-583920110004000092018-10-01Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)Pereira,AldoCasals,PedroSalazar,Ana MaríaGerding,Marcos Lethal dose lethal time biological control entomopathogenic fungus fecundity fertility longevity Obscure mealybug, Pseudococcus viburni (Signoret), is a cosmopolitan pest that causes damage by suction of vascular juices and the production of honeydew, as well as for being a quarantine insect. Within control options, entomopathogenic fungi are a good alternative, nevertheless, more research is needed. In this research, the Metarhizium anisopliae var. anisopliae (Metschnikoff) isolate Qu-M984 was evaluated on P. viburni under laboratory conditions. Virulence was evaluated by lethal dose 50 (LD50) and lethal time 50 (LT50), for each of the four life stages of the female. The doses tested were 10(5), 10(6), 10(7) and 10(8) conidia mL-1. Also fecundity, egg size, fertility, and longevity of adult females were evaluated at doses of 10(5) and 10(6) conidia mL-1, the evaluations were made every 2 d throughout the insect life time. The LD50 and LT50 obtained were variable for each life stage, although without statistical differences among life stages (P > 0.05), ranging from LD50 = 7.3 x 10(5) to 4.9 x 10(9) conidia mL-1 and LT50 = 7.74 to 9.97 d at 10(8) conidia mL-1. Significant differences (P < 0.05) were observed on longevity at 10(6) conidia mL-1. Longevity was 29% less compared to the control. This result on longevity at relatively low dose is relevant due to the fact that decrease possibilities to find live quarantine insects at the moment of harvest. Fertility, fecundity and egg size showed no differences (P > 0.05).info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.71 n.4 20112011-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400009en10.4067/S0718-58392011000400009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Lethal dose lethal time biological control entomopathogenic fungus fecundity fertility longevity
spellingShingle	Lethal dose lethal time biological control entomopathogenic fungus fecundity fertility longevity Pereira,Aldo Casals,Pedro Salazar,Ana María Gerding,Marcos Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)
description	Obscure mealybug, Pseudococcus viburni (Signoret), is a cosmopolitan pest that causes damage by suction of vascular juices and the production of honeydew, as well as for being a quarantine insect. Within control options, entomopathogenic fungi are a good alternative, nevertheless, more research is needed. In this research, the Metarhizium anisopliae var. anisopliae (Metschnikoff) isolate Qu-M984 was evaluated on P. viburni under laboratory conditions. Virulence was evaluated by lethal dose 50 (LD50) and lethal time 50 (LT50), for each of the four life stages of the female. The doses tested were 10(5), 10(6), 10(7) and 10(8) conidia mL-1. Also fecundity, egg size, fertility, and longevity of adult females were evaluated at doses of 10(5) and 10(6) conidia mL-1, the evaluations were made every 2 d throughout the insect life time. The LD50 and LT50 obtained were variable for each life stage, although without statistical differences among life stages (P > 0.05), ranging from LD50 = 7.3 x 10(5) to 4.9 x 10(9) conidia mL-1 and LT50 = 7.74 to 9.97 d at 10(8) conidia mL-1. Significant differences (P < 0.05) were observed on longevity at 10(6) conidia mL-1. Longevity was 29% less compared to the control. This result on longevity at relatively low dose is relevant due to the fact that decrease possibilities to find live quarantine insects at the moment of harvest. Fertility, fecundity and egg size showed no differences (P > 0.05).
author	Pereira,Aldo Casals,Pedro Salazar,Ana María Gerding,Marcos
author_facet	Pereira,Aldo Casals,Pedro Salazar,Ana María Gerding,Marcos
author_sort	Pereira,Aldo
title	Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)
title_short	Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)
title_full	Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)
title_fullStr	Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)
title_full_unstemmed	Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)
title_sort	virulence and pre-lethal reproductive effects of metarhizium anisopliae var. anisopliae on pseudococcus viburni (hemiptera: pseudococcidae)
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400009
work_keys_str_mv	AT pereiraaldo virulenceandprelethalreproductiveeffectsofmetarhiziumanisopliaevaranisopliaeonpseudococcusviburnihemipterapseudococcidae AT casalspedro virulenceandprelethalreproductiveeffectsofmetarhiziumanisopliaevaranisopliaeonpseudococcusviburnihemipterapseudococcidae AT salazaranamaria virulenceandprelethalreproductiveeffectsofmetarhiziumanisopliaevaranisopliaeonpseudococcusviburnihemipterapseudococcidae AT gerdingmarcos virulenceandprelethalreproductiveeffectsofmetarhiziumanisopliaevaranisopliaeonpseudococcusviburnihemipterapseudococcidae
_version_	1714205302544400384

Virulence and Pre-Lethal Reproductive Effects of Metarhizium anisopliae var. anisopliae on Pseudococcus viburni (Hemiptera: Pseudococcidae)

Ejemplares similares