scholarly journals Aproximación al uso y aprovechamiento de insectos comestibles en las comunidades indígenas del oriente amazónico colombiano

2021 ◽  
Vol 28 (4) ◽  
pp. e21227
Author(s):  
Héctor Jaime Gasca Álvarez ◽  
William González
Keyword(s):  
Atta Laevigata ◽  
Rhynchophorus Palmarum

En la Amazonía colombiana, los insectos constituyen un recurso natural abundante, el cual es aprovechado mediante el consumo de especies comestibles. Históricamente, los pueblos indígenas son entomofágicos y han incluido a insectos y otros artrópodos en sus dietas. En el presente estudio, se analiza el uso tradicional de insectos comestibles en las comunidades del oriente amazónico de Colombia. Durante el período de agosto 2020 a marzo 2021, se realizaron entrevistas abiertas y semi-estructuradas a habitantes del municipio de Mitú (Vaupés) y de 41 comunidades indígenas aledañas, las cuales indagaron sobre la percepción, aprovechamiento y comercialización de insectos comestibles. De acuerdo con su valor de uso, Rhynchophorus palmarum (Coleoptera: Curculionidae), Syntermes spinosus (Blattodea: Termitidae), Atta laevigata (Hymenoptera: Formicidae), Lusura chera (Lepidoptera: Notodontidae) y Polybia liliacea (Hymenoptera: Vespidae), constituyen las especies de insectos comestibles más representativas de la región. Para cada especie se estableció su calendario ecológico y se documentaron sus técnicas y métodos de recolecta, sus formas tradicionales de preparación y consumo, y sus actividades de comercialización. Se resalta el potencial de las especies de insectos comestibles analizadas para el fortalecimiento de estrategias de uso sostenible direccionadas a mejorar la seguridad alimentaria de la población y el mantenimiento de los conocimientos tradicionales de las comunidades.

Chemical composition and antimicrobial activity of cuticular and internal lipids of the insect Rhynchophorus palmarum

2020 ◽  
Vol 105 (1) ◽  
Author(s):  
Mariana de M. C. Batalha ◽  
Henrique F. Goulart ◽  
Antônio E. G. Santana ◽  
Leandro A. O. Barbosa ◽  
Ticiano G. Nascimento ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Rhynchophorus Palmarum

scholarly journals Flutuação Populacional de Rhynchophorus palmarum L. (Coleoptera: Curculionidae) em Plantios de Palma de Óleo em Roraima

2015 ◽  
Vol 8 (2) ◽  
pp. 130-134 ◽  
Author(s):  
Ruy Guilherme Correia ◽  
Antonio Cesar Silva Lima ◽  
Antonio Carlos Centeno Cordeiro ◽  
Francisco Clemilto Da Silva Maciel ◽  
Walmer Bruno Rocha Martins ◽  
...  
Keyword(s):  
Aggregation Pheromone ◽  
Palm Oil ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Cane Sugar ◽  
Population Fluctuation ◽  
Forest Environment ◽  
Rhynchophorus Palmarum ◽  
Elaeis Guineensis Jacq ◽  
Field Traps

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.

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

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.

Dispersal of Miconia argentea seeds by the leaf-cutting ant Atta colombica

1998 ◽  
Vol 14 (5) ◽  
pp. 705-710 ◽  
Author(s):  
J. W. Dalling ◽  
Rainer Wirth
Keyword(s):  
Seedling Recruitment ◽  
Atta Cephalotes ◽  
Brazilian Cerrado ◽  
Atta Laevigata ◽  
Cerrado Vegetation ◽  
Brosimum Alicastrum ◽  
Leaf Cutting ◽  
Single Night ◽  
Local Recruitment ◽  
Atta Colombica

While leaf-cutter ants are thought to collect mainly vegetative plant material, they have also been observed collecting seeds or fruit parts on the forest floor (Alvarez-Buylla & Martínez-Ramos 1990, Kaspari 1996). For example, leaf-cutter ants have been observed carrying considerable numbers of Brosimum alicastrum Sw. and Cecropia spp. seeds into their nests (Wirth 1996) and Leal & Oliveira (1998; pers. comm.) found them foraging on the fruits and seeds of 19 different species of Brazilian cerrado vegetation, including six Miconia species. Under some circumstances, seed removal and relocation by leaf cutter ants might even be sufficient to affect local recruitment patterns of trees. For example, in Costa Rica, Atta cephalotes can remove all fallen fig fruit from beneath a Ficus hondurensis crown in a single night (Roberts & Heithaus 1986), while in Venezuela, seedling recruitment of the savanna tree Tapirira velutinifolia was positively associated with the seed harvesting and seed cleaning activities of the ant Atta laevigata (Farji Brenner & Silva 1996).

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

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.

Ultrastructural profile of metapleural gland cells of the ant Atta laevigata (F. Smith, 1858) (Formicidae: Attini)

2012 ◽  
Vol 62 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Maria Izabel Camargo-Mathias ◽  
Odair Correa Bueno ◽  
Alexsandro Santana Vieira
Keyword(s):  
Endoplasmic Reticulum ◽  
Squamous Epithelium ◽  
Smooth Endoplasmic Reticulum ◽  
Secretory Cells ◽  
Metapleural Gland ◽  
Atta Laevigata ◽  
Gland Cells ◽  
Transmission Electron ◽  
Secretion Granules ◽  
Myelin Figures

AbstractThe metapleural gland is considered a synapomorphy of ants, and is characterized as a paired structure located at the two postlateral ends of the thorax and secretes substances capable of inhibiting and controlling fungi and bacteria in the fungus garden and inside the nest. This study was aimed at investigating if and which are the ultrastructural differences in the metapleural gland cells of workers (three castes) of Atta laevigata using transmission electron microscopy (TEM). This study revealed the presence of Golgi regions, rough endoplasmic reticulum (lamellar and vesicular shapes), smooth endoplasmic reticulum, mitochondria (elongated, round-shaped), vacuoles, secretion granules with different electron densities, and myelin figures in the cytoplasm of secretory cells, indicating that this gland produces substances composed of proteins, lipids, and polysaccharides (glycogen in major workers). Lipid droplets and secretion granules were found very near to the microvilli, especially in minor workers. The intracellular portion of canaliculi exhibited invaginations that increased the surface area and modified the secretion produced by the secretory cells. In the three castes examined, the gland exhibited a reservoir preceded by a collecting chamber, both lined by a simple squamous epithelium with a cuticular intima. Workers of the three castes of A. laevigata might be involved in the production of secretion mainly composed of proteins with antibiotic properties and, minor workers, may be responsible for producing a wider variety of secretions compared to median and major workers in the colony.

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