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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
11/07/2017 |
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Actualizado : |
05/10/2017 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
DE BARROS, M.N.D.L.; RIET-CORREA, F.; AZEVEDO, S.; LABRUNA, M.B. |
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Afiliación : |
MICHELLINE NICOLLE D.L. DE BARROS, Unidade Acadêmica de Medicina Veterinária, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande, Brasil.; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Unidade Acadêmica de Medicina Veterinária, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande, Brasil.; SERGIO AZEVEDO, Unidade Acadêmica de Medicina Veterinária, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande, Brasil.; MARCELO B. LABRUNA, Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine, University of São Paulo,Brasil. |
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Título : |
Off-host development and survival of Rhipicephalus (Boophilus) microplus in the Brazilian semiarid. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Veterinary Parasitology: Regional Studies and Reports, 2017,v, 9.p.17-24. |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 5 January 2017 // Revised 21 March 2017// Accepted 3 April 2017// Available online 5 April 2017. |
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Contenido : |
Resumen:
Rhipicephalus (Boophilus) microplus is the most economically important tick of the world, including Brazil. Whereas the epidemiology of R. microplus is well known in most of the Brazilian land, virtually nothing is known from the Brazilian semiarid region, the Caatinga biome. Considering the relevance of R. microplus for the cattle industry within the Caatinga, this study aimed to evaluate for the first time the off-host development of this tick species under natural conditions of the Caatinga. During 2011?2015, engorged females of R. microplus were exposed to field conditions of native Caatinga, where female oviposition, egg incubation and hatching, and larval survival were quantified. In parallel, counterpart ticks (control group) were evaluated under optimal conditions in the laboratory. During the study, nearly 100% of the engorged females of the control group successfully oviposited fertile egg masses, from which most of the eggs yielded larvae (mean % hatching usually>90%). Under field conditions, while almost 100% of the engorged females oviposited, in most of the times no larvae hatched from these eggs. Furthermore, when larvae hatched, mean % hatching was most of the times <50%. Soil temperatures did not oscillate drastically through the study, with mean temperature between 30 and 35°C in most of the time. In contrast, rainfall was irregular throughout the study. Correlation analyses indicated that either the number of egg masses that yielded larvae, or the mean % hatching of the egg masses were positively associated with higher rainfall months. Our results showed that in most of the time, field conditions were unfavorable for R. microplus, indicating that cattle would have a low exposure to R. microplus infestations when raised in Caatinga fields like those of the present study. MenosResumen:
Rhipicephalus (Boophilus) microplus is the most economically important tick of the world, including Brazil. Whereas the epidemiology of R. microplus is well known in most of the Brazilian land, virtually nothing is known from the Brazilian semiarid region, the Caatinga biome. Considering the relevance of R. microplus for the cattle industry within the Caatinga, this study aimed to evaluate for the first time the off-host development of this tick species under natural conditions of the Caatinga. During 2011?2015, engorged females of R. microplus were exposed to field conditions of native Caatinga, where female oviposition, egg incubation and hatching, and larval survival were quantified. In parallel, counterpart ticks (control group) were evaluated under optimal conditions in the laboratory. During the study, nearly 100% of the engorged females of the control group successfully oviposited fertile egg masses, from which most of the eggs yielded larvae (mean % hatching usually>90%). Under field conditions, while almost 100% of the engorged females oviposited, in most of the times no larvae hatched from these eggs. Furthermore, when larvae hatched, mean % hatching was most of the times <50%. Soil temperatures did not oscillate drastically through the study, with mean temperature between 30 and 35°C in most of the time. In contrast, rainfall was irregular throughout the study. Correlation analyses indicated that either the number of egg masses that yielded larvae, or the... Presentar Todo |
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Palabras claves : |
BRAZIL; CAATINGA; IXODIDAE; TICK. |
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Thesagro : |
BRASIL; ENFERMEDADES DE LOS ANIMALES; GARRAPATAS. |
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Asunto categoría : |
E16 Enfermedades de los animales |
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Marc : |
LEADER 02673naa a2200253 a 4500
001 1057367
005 2017-10-05
008 2017 bl uuuu u00u1 u #d
100 1 $aDE BARROS, M.N.D.L.
245 $aOff-host development and survival of Rhipicephalus (Boophilus) microplus in the Brazilian semiarid.$h[electronic resource]
260 $c2017
500 $aArticle history: Received 5 January 2017 // Revised 21 March 2017// Accepted 3 April 2017// Available online 5 April 2017.
520 $aResumen: Rhipicephalus (Boophilus) microplus is the most economically important tick of the world, including Brazil. Whereas the epidemiology of R. microplus is well known in most of the Brazilian land, virtually nothing is known from the Brazilian semiarid region, the Caatinga biome. Considering the relevance of R. microplus for the cattle industry within the Caatinga, this study aimed to evaluate for the first time the off-host development of this tick species under natural conditions of the Caatinga. During 2011?2015, engorged females of R. microplus were exposed to field conditions of native Caatinga, where female oviposition, egg incubation and hatching, and larval survival were quantified. In parallel, counterpart ticks (control group) were evaluated under optimal conditions in the laboratory. During the study, nearly 100% of the engorged females of the control group successfully oviposited fertile egg masses, from which most of the eggs yielded larvae (mean % hatching usually>90%). Under field conditions, while almost 100% of the engorged females oviposited, in most of the times no larvae hatched from these eggs. Furthermore, when larvae hatched, mean % hatching was most of the times <50%. Soil temperatures did not oscillate drastically through the study, with mean temperature between 30 and 35°C in most of the time. In contrast, rainfall was irregular throughout the study. Correlation analyses indicated that either the number of egg masses that yielded larvae, or the mean % hatching of the egg masses were positively associated with higher rainfall months. Our results showed that in most of the time, field conditions were unfavorable for R. microplus, indicating that cattle would have a low exposure to R. microplus infestations when raised in Caatinga fields like those of the present study.
650 $aBRASIL
650 $aENFERMEDADES DE LOS ANIMALES
650 $aGARRAPATAS
653 $aBRAZIL
653 $aCAATINGA
653 $aIXODIDAE
653 $aTICK
700 1 $aRIET-CORREA, F.
700 1 $aAZEVEDO, S.
700 1 $aLABRUNA, M.B.
773 $tVeterinary Parasitology: Regional Studies and Reports, 2017,v, 9.p.17-24.
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INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
08/09/2014 |
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Actualizado : |
06/11/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 1 |
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Autor : |
UMPIÉRREZ-FALAICHE, M.; GARMENDIA, G.; PEREYRA, S.; RODRÍGUEZ-HARALAMBIDES, A.; WARD, T.J.; VERO, S. |
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Afiliación : |
SILVIA ANTONIA PEREYRA CORREA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Regional differences in species composition and toxigenic potential among Fusarium head blight isolates from Uruguay indicate a risk of nivalenol contamination in new wheat production areas. |
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Fecha de publicación : |
2013 |
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Fuente / Imprenta : |
International Journal of Food Microbiology, v. 166, n. 1, p. 135-140, 2013 |
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ISSN : |
0168-1605 |
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DOI : |
10.1016/j.ijfoodmicro.2013.06.029 |
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Idioma : |
Inglés |
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Notas : |
Article history:Received 15 April 2013/Received in revised form 18 June 2013/Accepted 23 June 2013/Available online 1 July 2013. |
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Contenido : |
Abstract
Members of the Fusarium graminearum species complex (FGSC) are the primary cause of Fusarium head blight (FHB) of wheat, and frequently contaminate grain with trichothecene mycotoxins that pose a serious threat to food safety and animal health. The species identity and trichothecene toxin potential of 151 FGSC isolates collected from wheat in Uruguay were determined via multilocus genotyping. Although F. graminearum with the 15ADON trichothecene type accounted for 86% of the isolates examined, five different FGSC species and all three trichothecene types were identified in this collection. This is the first report of Fusarium asiaticum, Fusarium brasilicum, Fusarium cortaderiae, and Fusarium austroamericanum from Uruguay. In addition, we observed significant (P<0.001) regional differences in the composition of FGSC species and trichothecene types within Uruguay. Isolates of F. graminearum with the 15ADON type were the most prevalent in western provinces (95%), while F. asiaticum (43%) and the NIV type (61%) predominated in the new wheat production zone in Cerro Largo along Uruguay's eastern border with Brazil. F. graminearum isolates (15ADON type) were significantly (P<0.005) more aggressive on wheat than were isolates from the other species examined (NIV or 3ADON types). However, F. graminearum isolates (15ADON type) were significantly (P<0.05) more sensitive to tebuconazole than isolates from other species (NIV type). These results document substantial heterogeneity among the pathogens responsible for FHB in Uruguay. In addition, the regional predominance of the NIV trichothecene type is of significant concern to food safety and indicates that additional monitoring of nivalenol levels in grain may be required. MenosAbstract
Members of the Fusarium graminearum species complex (FGSC) are the primary cause of Fusarium head blight (FHB) of wheat, and frequently contaminate grain with trichothecene mycotoxins that pose a serious threat to food safety and animal health. The species identity and trichothecene toxin potential of 151 FGSC isolates collected from wheat in Uruguay were determined via multilocus genotyping. Although F. graminearum with the 15ADON trichothecene type accounted for 86% of the isolates examined, five different FGSC species and all three trichothecene types were identified in this collection. This is the first report of Fusarium asiaticum, Fusarium brasilicum, Fusarium cortaderiae, and Fusarium austroamericanum from Uruguay. In addition, we observed significant (P<0.001) regional differences in the composition of FGSC species and trichothecene types within Uruguay. Isolates of F. graminearum with the 15ADON type were the most prevalent in western provinces (95%), while F. asiaticum (43%) and the NIV type (61%) predominated in the new wheat production zone in Cerro Largo along Uruguay's eastern border with Brazil. F. graminearum isolates (15ADON type) were significantly (P<0.005) more aggressive on wheat than were isolates from the other species examined (NIV or 3ADON types). However, F. graminearum isolates (15ADON type) were significantly (P<0.05) more sensitive to tebuconazole than isolates from other species (NIV type). These results document substantial heterogenei... Presentar Todo |
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Palabras claves : |
AGRESSIVENESS; FGSC; FHB; FUSARIUM ASIATICUM; FUSARIUM AUSTROAMERICANUM; FUSARIUM BRASILICUM; FUSARIUM CORTADERIAE; FUSARIUM GRAMINEARUM SPECIES COMPLEX; FUSARIUM HEAD BLIGHT; MULTILOCUS GENOTYPING; NIVALENOL; TEBUCONAZOLE; TRICHOTHECENE MYCOTOXINS. |
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Thesagro : |
FITOPATOLOGIA; TRIGO; URUGUAY. |
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Asunto categoría : |
H20 Enfermedades de las plantas |
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Marc : |
LEADER 03172naa a2200409 a 4500
001 1050037
005 2019-11-06
008 2013 bl uuuu u00u1 u #d
022 $a0168-1605
024 7 $a10.1016/j.ijfoodmicro.2013.06.029$2DOI
100 1 $aUMPIÉRREZ-FALAICHE, M.
245 $aRegional differences in species composition and toxigenic potential among Fusarium head blight isolates from Uruguay indicate a risk of nivalenol contamination in new wheat production areas.$h[electronic resource]
260 $c2013
500 $aArticle history:Received 15 April 2013/Received in revised form 18 June 2013/Accepted 23 June 2013/Available online 1 July 2013.
520 $aAbstract Members of the Fusarium graminearum species complex (FGSC) are the primary cause of Fusarium head blight (FHB) of wheat, and frequently contaminate grain with trichothecene mycotoxins that pose a serious threat to food safety and animal health. The species identity and trichothecene toxin potential of 151 FGSC isolates collected from wheat in Uruguay were determined via multilocus genotyping. Although F. graminearum with the 15ADON trichothecene type accounted for 86% of the isolates examined, five different FGSC species and all three trichothecene types were identified in this collection. This is the first report of Fusarium asiaticum, Fusarium brasilicum, Fusarium cortaderiae, and Fusarium austroamericanum from Uruguay. In addition, we observed significant (P<0.001) regional differences in the composition of FGSC species and trichothecene types within Uruguay. Isolates of F. graminearum with the 15ADON type were the most prevalent in western provinces (95%), while F. asiaticum (43%) and the NIV type (61%) predominated in the new wheat production zone in Cerro Largo along Uruguay's eastern border with Brazil. F. graminearum isolates (15ADON type) were significantly (P<0.005) more aggressive on wheat than were isolates from the other species examined (NIV or 3ADON types). However, F. graminearum isolates (15ADON type) were significantly (P<0.05) more sensitive to tebuconazole than isolates from other species (NIV type). These results document substantial heterogeneity among the pathogens responsible for FHB in Uruguay. In addition, the regional predominance of the NIV trichothecene type is of significant concern to food safety and indicates that additional monitoring of nivalenol levels in grain may be required.
650 $aFITOPATOLOGIA
650 $aTRIGO
650 $aURUGUAY
653 $aAGRESSIVENESS
653 $aFGSC
653 $aFHB
653 $aFUSARIUM ASIATICUM
653 $aFUSARIUM AUSTROAMERICANUM
653 $aFUSARIUM BRASILICUM
653 $aFUSARIUM CORTADERIAE
653 $aFUSARIUM GRAMINEARUM SPECIES COMPLEX
653 $aFUSARIUM HEAD BLIGHT
653 $aMULTILOCUS GENOTYPING
653 $aNIVALENOL
653 $aTEBUCONAZOLE
653 $aTRICHOTHECENE MYCOTOXINS
700 1 $aGARMENDIA, G.
700 1 $aPEREYRA, S.
700 1 $aRODRÍGUEZ-HARALAMBIDES, A.
700 1 $aWARD, T.J.
700 1 $aVERO, S.
773 $tInternational Journal of Food Microbiology$gv. 166, n. 1, p. 135-140, 2013
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