The Effect of Arthropods, Diseases, and Nematodes on Tropical Pastures

Lapointe, Stephen L.; Sonoda, R. M.

doi:10.1201/9781420038781.ch12

Cited by 8 publications

(9 citation statements)

References 52 publications

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“…Sin embargo, la mayoría de las especies de este género son susceptibles al complejo salivazo de los pastos (Homoptera: Cercopidae). El salivazo es la limitante biótica más importante para la utilización de varias especies del género Brachiaria debido a su amplia distribución y nivel de daño (Lapointe & Sonoda 2001).…”

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Dinámica poblacional y fenología del salivazo de los pastos Zulia carbonaria (Lallemand) (Homoptera: Cercopidae) en el valle geográfico del río Cauca, Colombia

Castro¹,

Morales-Rodríguez²,

Peck³

2005

Neotrop. Entomol.

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-We studied the population fluctuation of nymphs, adults, eggs and natural enemies of the spittlebug Zulia carbonaria(Lallemand) (Homoptera: Cercopidae) associated with Brachiaria dictyoneura pastures of the Cauca River Valley, Colombia. Our objective was to describe spittlebug phenology under seasonal conditions of bimodal precipitation (March-May and September-November). Weekly, over two years, populations of spittlebugs and certain natural enemies were quantified using a sweep net (adults) and counts of nymphs in spittle masses. To obtain eggs and study their development, adult females were collected weekly and placed in petri dishes with moist filter paper to oviposit. In both survey years 3-4 generations of Z. carbonaria were documented with a mean life cycle of 66 days. Populations were most abundant in the first semester and decreased dramatically over the course of the second semester, even in the rainy months (September-November). Very few diapausing eggs were detected (0.5%). Natural enemies included the nymph predator Salpingogaster nigra Schiner (Diptera: Syrphidae), parasitic mites of adults (Acari: Erythraeidae) and fungi of various genera. Although Z. carbonaria synchronizes its life cycle with the rains of the first semester, no role of diapausing eggs was detected as is common in other spittlebug species under conditions of unimodal precipation. Possible explanations for this synchrony and for the scarcity of the insect under the rainy conditions of the second semester are discussed.KEY WORDS: Brachiaria, egg diapause, forage grass pest, Salpingogaster nigra, seasonality RESUMEN -Se estudió la fluctuación poblacional de ninfas, adultos, huevos y enemigos naturales de Zulia carbonaria (Lallemand) (Homoptera: Cercopidae) asociado con pastos de Brachiaria dictyoneura en el valle geográfico del río Cauca, Colombia. El objetivo de este trabajo fue describir la fenología de Z. carbonaria bajo las condiciones estacionales de precipitación bimodal (marzo-mayo y septiembrenoviembre). Semanalmente, durante dos años, se cuantificaron las poblaciones del salivazo y ciertos enemigos naturales mediante pases de jama (adultos) y conteos de ninfas en masas de espuma. Para obtener huevos y estudiar su desarrollo, semanalmente se recolectaron adultos hembras que se pusieron a ovipositar en cajas de petri con papel filtro húmedo en su interior. En ambos años de muestreo se documentaron 3-4 generaciones de Z. carbonaria con un ciclo de vida promedia de 66 días. Las poblaciones fueron más abundantes en el primer semestre y disminuyeron dramáticamente en el transcurso del segundo semestre, aún en los meses lluviosos (septiembre-noviembre). Se encontró muy bajo número de huevos diapáusicos (0.5%). Los enemigos naturales encontrados fueron la mosca depredadora de las ninfas Salpingogaster nigra Schiner (Diptera: Syrphidae), ácaros parasitarios de los adultos (Acari: Erythraeidae) y hongos de varios géneros. Aunque Z. carbonaria sincroniza su ciclo de vida con las lluvias del primer semestre, no se detectó un p...

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unclassified

Dinámica poblacional y fenología del salivazo de los pastos Zulia carbonaria (Lallemand) (Homoptera: Cercopidae) en el valle geográfico del río Cauca, Colombia

Castro¹,

Morales-Rodríguez²,

Peck³

2005

Neotrop. Entomol.

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“…Diverse genera of Cercopidae, like Aeneolamia, Mahanarva, Zulia, Notozulia, Prosapia and Deois spp. are considered a serious threat for forage in South America, causing up to a 70% reduction in pasture yields in infested areas (Sanz, 1997;Thompson, 2004;Leite et al, 2005), particularly to the extensively planted genus Brachiaria (Lapointe & Sonoda 2001).…”

Section: Introductionmentioning

confidence: 99%

Description of the immature stages and new host plant records of Deois (Deois) mourei (Berg) (Hemiptera: Cercopidae), a species newly recorded from Argentina and Paraguay

Foieri

Lenicov

Virla

2016

Zootaxa

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Deois (Deois) mourei Cavichioli & Sakakibara (Hemiptera: Cercopidae) is recorded for the first time from Argentina and Paraguay. The eggs and immature stages of the species are described and illustrated; the main characters that distinguish instars are body size, color, number of flagellomeres, and number of tibial and metatarsomere spines. A key for identification of nymphs of D. (D.) mourei and a key to differentiate nymphs of the sympatric species D. (D.) mourei and Notozulia entreriana Berg are provided. In addition, a list of host plants of D. (D.) mourei in Argentina is given.

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“…This species has been widely used for controlling Cercopidae in sugar cane from Northern to Southeastern Brazil, covering a treated area of approximately 357,058 ha (Alves et al 2008). Another option is the use of resistant plants, which stands out because it is the most appropriate tool for these situations from an economic and environmental perspective and can be used with biological and cultural controls, thereby contributing to the integrated management of this pest (Nilakhe 1987;Vendramim 1990;Lapointe and Sonoda, 2001;Valério 2005). Several studies are being developed toward the goal of selecting a grass that is resistant to both the nymphs and adults of spittlebugs (Ferrufino and Lapointe 1989;Valério et al 1997;Cardona et al 2004;López et al 2009;Cardona et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of forage grass resistance to Mahanarva fimbriolata (Stål)

et al. 2017

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ABSTRACT:The aim of this study was to select forage grasses with potential resistance to Mahanarva fimbriolata by assessing effects on insect. No-choice assays were conducted with 12 genotypes and laboratory-reared insects. The following parameters were assessed: mortality and duration of the nymphal stage; adult weight and longevity; pre-oviposition period; number of eggs/female; viability and duration of the embryonic period. As main result it was verified that the mortality of nymphs reared on Panicum maximum cv.Paredão is almost complete and that this forage grass may be

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The Effect of Arthropods, Diseases, and Nematodes on Tropical Pastures

Cited by 8 publications

References 52 publications

Dinámica poblacional y fenología del salivazo de los pastos Zulia carbonaria (Lallemand) (Homoptera: Cercopidae) en el valle geográfico del río Cauca, Colombia

Dinámica poblacional y fenología del salivazo de los pastos Zulia carbonaria (Lallemand) (Homoptera: Cercopidae) en el valle geográfico del río Cauca, Colombia

Description of the immature stages and new host plant records of Deois (Deois) mourei (Berg) (Hemiptera: Cercopidae), a species newly recorded from Argentina and Paraguay

Evaluation of forage grass resistance to Mahanarva fimbriolata (Stål)

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