Rhynchophorus palmarum

Esta pesquisa teve como objetivo avaliar a ﬂutuação populacional de Rhynchophorus palmarum L. (Coleoptera: Curculionidae) em plantios de Elaeis guineensis Jacq, em ecossistemas de savana e floresta no estado de Roraima. A pesquisa foi desenvolvida durante o período de janeiro de 2011 a fevereiro de 2012 nos campos experimentais da Embrapa Roraima: Monte Cristo e Caroebe, numa área de 2 hectares com a cultura da Palma de Óleo, em cada campo. Foram distribuídas armadilhas iscadas com roletes de cana-de-açúcar e feromônio de agregação para captura dos insetos no entorno dos plantios. Ocorreu flutuação de R. palmarum com picos populacionais nos meses de julho e agosto no ecossistema de savana e de abril a setembro no ambiente de floresta. A população de R. palmarum foi menor em meses de baixa precipitação pluviométrica nos dois ambientes avaliados com a Palma de Óleo em RoraimaPopulation Fluctuation of Rhynchophorus palmarum L. (Coleoptera: Curculionidae) in Plantations of Oil Palm in RoraimaAbstract. This research aimed to evaluate the population fluctuation Rhynchophorus palmarum L. (Coleoptera: Curculionidae) in Elaeis guineensis Jacq plantations in forest and savanna ecosystems in the state of Roraima. The research was conducted during the period from January 2011 to February 2012 in the experimental field of Embrapa Roraima: Monte Cristo and Caroebe in an area of 2 hectares with culture Oil Palm in each field. Traps baited with rollers cane sugar and aggregation pheromone for capturing insects in the vicinity of the plantations were distributed. Fluctuation occurred R. palmarum with population peaks in the months of July and August in the savanna ecosystem and from April to September in the forest environment. The population of R. palmarum was lower in months of low rainfall in the two environments assessed with a palm-oil-in Roraima.

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Phoretic mite infestations associated with Rhynchophorus palmarum (Coleoptera: Curculionidae) in southern California

Systematic and Applied Acarology ◽

10.11158/saa.26.10.6 ◽

2021 ◽

Author(s):

Francesc Gómez-marco ◽

Hans Klompen ◽

Mark Hoddle

Keyword(s):

Species Composition ◽

Invasion Biology ◽

San Diego County ◽

South American ◽

Body Parts ◽

Survey Period ◽

Rhynchophorus Palmarum ◽

The Usa ◽

American Palm ◽

Mite Infestations

The South American palm weevil, Rhynchophorus palmarum (Coleoptera: Curculionidae), established in San Diego County, California, USA sometime around 2014. Attached to the motile adults of this destructive palm pest, we identified three species of uropodine mites (Parasitiformes: Uropodina), Centrouropoda n. sp., Dinychus n. sp. and Fuscuropoda marginata. Two of these species, Centrouropoda n. sp. and Dinychus n. sp. are recorded for the first time in the USA and were likely introduced by R. palmarum. Several species of mites, primarily of Uropodina, have previously been recorded as phoretic on Rhynchophorus spp. In this study, we examined 3,035 adult R. palmarum trapped over a 2.5-year period, July 2016 to December 2018, and documented the presence of and species composition of phoretic mites and their relationship with weevil morphometrics (i.e., pronotum length and width). The presence and species composition of mites on weevil body parts changed over the survey period. No mites were found under weevil elytra in 2016 and mite prevalence under elytra increased over 2017–2018 due to an increased abundance of Centrouropoda n. sp per individual beetle. Mite occurrence levels were significantly correlated with reduced pronotum widths of male weevils only. The significance of this finding on male weevil fitness is unknown. Potential implications of phoretic mites on aspects of the invasion biology of R. palmarum are discussed.

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Effect of plant protection products on Rhynchophorus palmarum L. (Coleoptera: Curculionidae) larvae in laboratory

Arquivos do Instituto Biológico ◽

10.1590/1808-1657000452017 ◽

2018 ◽

Vol 85 (0) ◽

Author(s):

Samara dos Santos ◽

Valdemir Albuquerque da Silva Júnior ◽

Sonia Maria Forti Broglio ◽

Aldomario Santo Negrisoli Junior ◽

Elio Cesar Guzzo

Keyword(s):

Analysis Of Variance ◽

Artificial Diet ◽

Plant Protection ◽

Larval Mortality ◽

Plant Protection Products ◽

Fungal Diseases ◽

Laboratory Conditions ◽

Rhynchophorus Palmarum ◽

Early Instar

ABSTRACT: With the aim of developing tools for simultaneously managing Rhynchophorus palmarum and the coconut stem bleeding disease, we evaluated the effects of the insecticide thiamethoxam and the fungicide cyproconazole on R. palmarum larvae under laboratory conditions. Early-instar and intermediate-instar larvae were fed on an artificial diet containing 0.1% concentration of insecticide, fungicide or a mixture of both. Larval mortality was assessed daily during the 48 hours after the application of the treatments. Mean mortality values were subjected to analysis of variance and compared by Tukey’s test (p ≤ 0.05). Thiamethoxam caused mortality of 100% of early-instar and 90% of intermediate-instar larvae. In contrast, mortality was significantly lower in the cyproconazole treatment (60% for early-instar and 0% for intermediate-instar larvae) and the control (0% mortality for both treatments). The insecticide/fungicide mixture was equally effective (100% for early-instar and 86.67% for intermediate-instar larvae) to the insecticide only treatment. Differences in mortality between early-instar and intermediate-instar larvae were significant only for the thiamethoxam and cyproconazole treatments. These results indicate that, for the doses used here, thiamethoxam is toxic to both early-instar and intermediate-instar larvae, while cyproconazole is toxic just to early-instar larvae. Moreover, cyproconazole does not increase the toxicity of thiamethoxam. Early-instar larvae are more sensitive to thiamethoxam and cyproconazole than intermediate-instar larvae. We conclude that thiamethoxam + cyproconazole mixture may be effective for managing R. palmarum and associated fungal diseases on coconut palms.

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Author Correction: Antennal transcriptome sequencing and identification of candidate chemoreceptor proteins from an invasive pest, the American palm weevil, Rhynchophorus palmarum

Scientific Reports ◽

10.1038/s41598-021-96402-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Francisco Gonzalez ◽

Jibin Johny ◽

William B. Walker ◽

Qingtian Guan ◽

Sara Mfarrej ◽

...

Keyword(s):

Transcriptome Sequencing ◽

Invasive Pest ◽

Palm Weevil ◽

Rhynchophorus Palmarum ◽

American Palm

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Rhynchophorus palmarum in Disguise: Undescribed Polymorphism in the “Black” Palm Weevil

PLoS ONE ◽

10.1371/journal.pone.0143210 ◽

2015 ◽

Vol 10 (12) ◽

pp. e0143210 ◽

Cited By ~ 5

Author(s):

Bernhard Löhr ◽

Aymer Andrés Vásquez-Ordóñez ◽

Luis Augusto Becerra Lopez-Lavalle

Keyword(s):

Palm Weevil ◽

Rhynchophorus Palmarum ◽

Black Palm Weevil

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EVALUACION DE LA DINAMICA POBLACIONAL DE RHYNCHOPHORUS PALMARUM EN PALMA AFRICANA CON CUATRO TIPOS DE ATRAYENTES AZANZA MARTINEZ DERIAN ANDRES

UNESUM-Ciencias. Revista Científica Multidisciplinaria. ISSN 2602-8166 ◽

10.47230/unesum-ciencias.v2.n3.2018.103 ◽

2019 ◽

Vol 2 (3) ◽

pp. 59-76

Author(s):

Alfredo Lesvel Castro Landin ◽

William Merchán García ◽

Alfredo Valverde Lucio ◽

Carlos Castro Piguave ◽

Washington Narvaez Campana

Keyword(s):

Population Dynamics ◽

Experimental Design ◽

Research Evaluation ◽

Pheromone Traps ◽

Adult Control ◽

La Palma ◽

Palm Weevil ◽

Rhynchophorus Palmarum ◽

Adult Insect ◽

Randomized Experimental Design

La investigación evaluación de la dinámica poblacional del picudo de la palma (Rhynchophorus palmarum) en palma africana con cuatro tipos de atrayentes, tuvo como objetivos determinar la dinámica poblacional del picudo de la palma africana y evaluar el uso de cuatro tipos de atrayentes para el control de adultos del picudo. La metodología permitió utilizar un diseño experimental completamente aleatorizado y la variable evaluada fue número de insectos adultos capturados por trampa cada siete días. Los resultados permiten concluir que la dinámica poblacional del picudo en palma africana indica que la mayor captura se obtuvo el 6 de julio con 383 capturas de insectos adultos y con tendencia a la baja hasta la evaluación cinco que fue efectuada el 3 de agosto donde se capturaron 239 insectos adultos; pero posteriormente en la siguiente evaluación se obtuvo un incremento de captura de insectos, lo que indica que es muy variada la fluctuación poblacional del picudo; además que el uso de cuatro tipos de atrayentes para el control de adultos del picudo, indica que la mayor captura en las siete evaluaciones efectuadas se presentó donde se utilizó las trampas con feromonas y ubicadas cada 300 metros de distancia con capturas ubicadas por trampa entre 18,00 y 28,75 insectos adultos capturadas cada 7 días.Palabras claves: etología, trampas, monitoreo, capturaSUMMARYThe research evaluation of the population dynamics of the palm weevil (Rhynchophorus palmarum) in African palm with three types of attractants, had as objectives to determine the population dynamics of the palm weevil and to evaluate the use of three types of attractants for the control of weevil adults. The methodology allowed us to use a completely randomized experimental design and the variable evaluated was the number of adult insects captured pro trap every seven days. The results allow us to conclude that the population dynamics of the palm weevil in African palm indicates that the highest catch was obtained on July 6 with 383 adult insect captures and with a downward trend until the five evaluation that was made on August 3 where they were captured. 239 adult insects; but later in the following evaluation an increase of insect capture was obtained, which indicates that the population fluctuation of the weevil is very varied; In addition, the use of three types of attractants for adult control of the weevil indicates that the largest catch in the seven evaluations carried out was where pheromone traps were used and located every 300 meters away with catches located by trap between 18,00 and 28.75 adult insects captured every 7 days.Keywords: ethology, traps, monitoring, capture

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Associação de Bursaphelenchus cocophilus ao Rhynchophorus palmarum e Metamasius hemipterus em plantios de coqueiro no estado de Alagoas

Revista Ambientale ◽

10.17648/ambientale.v2i2.176 ◽

2018 ◽

Vol 2 (2) ◽

pp. 37

Author(s):

Josemildo Verçosa ARAÚJO JÚNIOR ◽

Romário Guimarães Verçosa de ARAÚJO ◽

Anderson Rodrigues SABINO ◽

Valdemir Albuquerque da SILVA JÚNIOR ◽

Priscylla Costa DANTAS ◽

...

Keyword(s):

Cocos Nucifera ◽

Rhynchophorus Palmarum ◽

Cocos Nucifera L ◽

Metamasius Hemipterus

A cultura do coqueiro (Cocos nucifera L.) no Brasil exerce grande importância comercial, sendo a região nordeste a principal produtora, seu fruto pode ser comercializado in natura ou seguir para processamento na agroindústria. É cultivada principalmente por pequenos produtores que enfrentam como principal fator limitante a produção a ocorrência de doenças, como o anel vermelho, doença causada pelo nematoide Bursaphelhenchus cocophilus (Cobb) Baujard, que é disseminada por insetos vetores como Rhynchophorus palmarum L. (Coleoptera: Curculionidae) e vem sendo relatado a associação entre o nematoide e Metamasius hemipterus L. (Coleoptera: Curculionidae) em diversos países. Por meio desse trabalho objetivou-se avaliar a associação do nematoide B. cocophilus agente causal da doença do anel vermelho na cultura do coqueiro ao M. hemipterus e R. palmarum, em três municípios do Estado de Alagoas. As armadilhas utilizadas foram do tipo balde contendo feromônio Metamasol (para captura de M. hemipterus) e Rincoforol (para captura de R. palmarum) distribuídas nas três propriedades estudadas. As coletas foram realizadas quinzenalmente por um período de três meses. Após a coleta, os nematoides foram separados pelo método da flotação centrifuga em solução de sacarose, e foi quantificado o número de B. cocophilus presentes em cada amostra. Dos três municípios pesquisados apenas São Sebastião apresentou associação entre M. hemipterus e B. cocophilus. Porém foi possível observar nas coletas de R. palmarum a associação desse inseto com o nematoide causador da doença do anel vermelho nos três municípios estudados.

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