First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina
Alfalfa (Medicago sativa L.; Fabaceae) is essential for argentinean agricultural development, but diseases like “witches´ broom», caused by the ArAWB phytoplasma, are limiting factors for the production of this crop. Insects that visit alfalfa have been poorly studied. The treehopper, Ceresa nigripectus Remes Lenicov (Hemiptera: Membracidae) is very frequent in alfalfa crops; ArAWB was detected in several individuals of this treehopper, but the ability of this species to transmit the pathogen has not yet been demonstrated. The Membracidae family is a poorly studied group in Argentina. No data on the biology of C. nigripectus are available, and therefore the aim of this contribution is to provide information on its behavioral and biological parameters as a first step toward its control. The studies were conducted in the laboratory under controlled conditions. Ceresa nigripectus populations were maintained on healthy alfalfa plants; the treehoppers were checked daily, the occurrence of molts was noted, and diverse aspects of nymphal and adult behavior were also recorded. A life table was built combining the observational data from 7 cohorts. Oviposition sites were characterized by dissecting plants and through staining methods. Ceresa nigripectus could complete its life cycle entirely by using only alfalfa as a host. Females do not tend their broods. Eggs are laid individually and rarely 2 or 3 were found in the same slit. Eggs were located in the stems, in the nodes (in the axils of the leaves) or in the internodal space, between the epidermis and cortical tissues. The pre-ovipositional period was about 6 days, and the average duration of the egg stage was 20 days. The duration of nymphal period was variable, between 32 to 63 days, with a mean of 45 days. Two periods of high mortality were recognized, i.e., in the first instar, and during the second week of the adult stage. Longevity of adults averaged 61 days, but some individuals survived up to 202 days; females lived longer than males. In laboratory colonies, the sex ratio was about 1.3:1 females:males. All the developmental stages of the treehopper were tended by the ant Camponotus punctulatus Mayr. Data regarding behavioral aspects and new distributional information are also provided.
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2014-12
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Subjects: | Medicago Sativa, Ciclo vital, Comportamiento, Fitoplasmas, Phytoplasmas, Plagas de Plantas, Hemiptera, Life Cycle, Behaviour, Pests of Plants, Ceresa Nigripectus, Alfalfa, Argentina, |
Online Access: | http://hdl.handle.net/20.500.12123/1118 http://journals.fcla.edu/flaent/article/view/83891/80781 |
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Medicago Sativa Ciclo vital Comportamiento Fitoplasmas Phytoplasmas Plagas de Plantas Hemiptera Life Cycle Behaviour Pests of Plants Ceresa Nigripectus Alfalfa Argentina Medicago Sativa Ciclo vital Comportamiento Fitoplasmas Phytoplasmas Plagas de Plantas Hemiptera Life Cycle Behaviour Pests of Plants Ceresa Nigripectus Alfalfa Argentina |
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Medicago Sativa Ciclo vital Comportamiento Fitoplasmas Phytoplasmas Plagas de Plantas Hemiptera Life Cycle Behaviour Pests of Plants Ceresa Nigripectus Alfalfa Argentina Medicago Sativa Ciclo vital Comportamiento Fitoplasmas Phytoplasmas Plagas de Plantas Hemiptera Life Cycle Behaviour Pests of Plants Ceresa Nigripectus Alfalfa Argentina Perez Grosso, Tomas Conci, Luis Rogelio Saavedra Pons, Amalia Beatriz Marino, Ana María Virla, Eduardo G. First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina |
description |
Alfalfa (Medicago sativa L.; Fabaceae) is essential for argentinean agricultural development,
but diseases like “witches´ broom», caused by the ArAWB phytoplasma, are limiting
factors for the production of this crop. Insects that visit alfalfa have been poorly studied.
The treehopper, Ceresa nigripectus Remes Lenicov (Hemiptera: Membracidae) is very frequent
in alfalfa crops; ArAWB was detected in several individuals of this treehopper, but
the ability of this species to transmit the pathogen has not yet been demonstrated. The
Membracidae family is a poorly studied group in Argentina. No data on the biology of C.
nigripectus are available, and therefore the aim of this contribution is to provide information
on its behavioral and biological parameters as a first step toward its control. The studies
were conducted in the laboratory under controlled conditions. Ceresa nigripectus populations
were maintained on healthy alfalfa plants; the treehoppers were checked daily, the
occurrence of molts was noted, and diverse aspects of nymphal and adult behavior were also
recorded. A life table was built combining the observational data from 7 cohorts. Oviposition
sites were characterized by dissecting plants and through staining methods. Ceresa
nigripectus could complete its life cycle entirely by using only alfalfa as a host. Females
do not tend their broods. Eggs are laid individually and rarely 2 or 3 were found in the
same slit. Eggs were located in the stems, in the nodes (in the axils of the leaves) or in the
internodal space, between the epidermis and cortical tissues. The pre-ovipositional period
was about 6 days, and the average duration of the egg stage was 20 days. The duration of
nymphal period was variable, between 32 to 63 days, with a mean of 45 days. Two periods
of high mortality were recognized, i.e., in the first instar, and during the second week of
the adult stage. Longevity of adults averaged 61 days, but some individuals survived up to
202 days; females lived longer than males. In laboratory colonies, the sex ratio was about
1.3:1 females:males. All the developmental stages of the treehopper were tended by the ant
Camponotus punctulatus Mayr. Data regarding behavioral aspects and new distributional
information are also provided. |
format |
info:ar-repo/semantics/artículo |
topic_facet |
Medicago Sativa Ciclo vital Comportamiento Fitoplasmas Phytoplasmas Plagas de Plantas Hemiptera Life Cycle Behaviour Pests of Plants Ceresa Nigripectus Alfalfa Argentina |
author |
Perez Grosso, Tomas Conci, Luis Rogelio Saavedra Pons, Amalia Beatriz Marino, Ana María Virla, Eduardo G. |
author_facet |
Perez Grosso, Tomas Conci, Luis Rogelio Saavedra Pons, Amalia Beatriz Marino, Ana María Virla, Eduardo G. |
author_sort |
Perez Grosso, Tomas |
title |
First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina |
title_short |
First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina |
title_full |
First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina |
title_fullStr |
First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina |
title_full_unstemmed |
First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina |
title_sort |
first biological data of ceresa nigripectus [hemiptera:membracidae], a common treehopper on alfalfa crops in argentina |
publishDate |
2014-12 |
url |
http://hdl.handle.net/20.500.12123/1118 http://journals.fcla.edu/flaent/article/view/83891/80781 |
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oai:localhost:20.500.12123-11182017-11-17T13:55:05Z First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina Perez Grosso, Tomas Conci, Luis Rogelio Saavedra Pons, Amalia Beatriz Marino, Ana María Virla, Eduardo G. Medicago Sativa Ciclo vital Comportamiento Fitoplasmas Phytoplasmas Plagas de Plantas Hemiptera Life Cycle Behaviour Pests of Plants Ceresa Nigripectus Alfalfa Argentina Alfalfa (Medicago sativa L.; Fabaceae) is essential for argentinean agricultural development, but diseases like “witches´ broom», caused by the ArAWB phytoplasma, are limiting factors for the production of this crop. Insects that visit alfalfa have been poorly studied. The treehopper, Ceresa nigripectus Remes Lenicov (Hemiptera: Membracidae) is very frequent in alfalfa crops; ArAWB was detected in several individuals of this treehopper, but the ability of this species to transmit the pathogen has not yet been demonstrated. The Membracidae family is a poorly studied group in Argentina. No data on the biology of C. nigripectus are available, and therefore the aim of this contribution is to provide information on its behavioral and biological parameters as a first step toward its control. The studies were conducted in the laboratory under controlled conditions. Ceresa nigripectus populations were maintained on healthy alfalfa plants; the treehoppers were checked daily, the occurrence of molts was noted, and diverse aspects of nymphal and adult behavior were also recorded. A life table was built combining the observational data from 7 cohorts. Oviposition sites were characterized by dissecting plants and through staining methods. Ceresa nigripectus could complete its life cycle entirely by using only alfalfa as a host. Females do not tend their broods. Eggs are laid individually and rarely 2 or 3 were found in the same slit. Eggs were located in the stems, in the nodes (in the axils of the leaves) or in the internodal space, between the epidermis and cortical tissues. The pre-ovipositional period was about 6 days, and the average duration of the egg stage was 20 days. The duration of nymphal period was variable, between 32 to 63 days, with a mean of 45 days. Two periods of high mortality were recognized, i.e., in the first instar, and during the second week of the adult stage. Longevity of adults averaged 61 days, but some individuals survived up to 202 days; females lived longer than males. In laboratory colonies, the sex ratio was about 1.3:1 females:males. All the developmental stages of the treehopper were tended by the ant Camponotus punctulatus Mayr. Data regarding behavioral aspects and new distributional information are also provided. La alfalfa (Medicago sativa L.; Fabaceae) es esencial para el desarrollo de la agricultura argentina y enfermedades como la “escoba de bruja”, causada por el fitoplasma ArAWB, son un factor limitante para la producción del cultivo. La fauna que visita este forraje ha sido escasamente estudiada en Argentina. Ceresa nigripectus es muy frecuente en alfalfa; estudios de laboratorio verificaron la presencia del ArAWB, pero su capacidad para transmitir la enfermedad todavía no ha sido demostrada. Membracidae es un grupo poco estudiado en el país, no hay datos sobre la biología de C. nigripectus y por ello el objetivo de esta contribución es proporcionar información sobre sus parámetros biológicos y comportamentales. Los estudios se realizaron en laboratorio bajo condiciones controladas. C. nigripectus se mantuvo sobre plantas sanas de alfalfa y para estudiar el ciclo de vida, los individuos fueron controlados diariamente observando presencia de mudas; aspectos del comportamiento de ninfas y adultos también fueron registrados. Se construyó una tabla de vida mediante la combinación de datos obtenidos en siete cohortes. La localización de posturas se realizó por disección de las plantas y a través de métodos de tinción. Esta especie es Pérez Grosso et al.: Biology of Ceresa nigripectus 1767 capaz de completar todo su ciclo de vida sobre alfalfa. Se estableció que las hembras de C. nigripectus no atienden a su progenie. Los huevos son depositados individualmente y pocas veces se encontraron dos o tres en la misma postura, la que se encuentra principalmente en los nudos (en las axilas de las hojas) o en el entrenudo (entre la epidermis y tejidos corticales). El período de pre-oviposición es corto (seis días) y la duración promedio del estado de huevo es 20 días. El período ninfal es variable, entre 32 y 63 días, con una media de 45 días. Se reconocieron dos períodos de alta mortalidad: el primer estadío ninfal, y durante la segunda semana de vida de los adultos. La longevidad promedió 61 días, pero algunos individuos vivieron hasta 202 días; las hembras viven más que los machos. En laboratorio, la proporción de sexos es aproximadamente 1,3:1 hembras:machos. Tanto ninfas como adulto son atendidos por la hormiga Camponotus punctulatus Mayr. Se proporcionan también datos relativos al comportamiento y distribución de la especie. Fil: Perez Grosso, Tomas. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Conci, Luis Rogelio. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Saavedra Pons, Amalia Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Marino, Ana Maria. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata; Argentina Fil: Virla, Eduardo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Planta Piloto de Procesos Industriales Microbiologicos; Argentina. Fundación Miguel Lillo. Dirección de Zoología. Instituto de Entomología; Argentina 2017-09-04T18:12:41Z 2017-09-04T18:12:41Z 2014-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/1118 http://journals.fcla.edu/flaent/article/view/83891/80781 1938-5102 eng info:eu-repo/semantics/openAccess application/pdf Florida entomologist 97 (4) : 1766-1773. (2014) |