Leptoglossus dilaticollis (Guérin-Méneville) (Hemiptera: Coreidae) on Magnolia alejandrae (Magnoliaceae) in Northeast Mexico

Gallardo-Yobal, Sergio Ignacio; Chacón-Hernández, Julio C.; Reyes-Zepeda, Francisco; Vázquez-García, J. Antonio; Monjarás-Barrera, José Irving; Ordaz-Silva, Salvador; López-Sánchez, Imelda V.

doi:10.4289/0013-8797.122.4.1011

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Magnolia alejandrae García-Morales & Iamonico is a recently described and critically endangered species endemic to the northeast of Mexico, known only from its taxonomic description (García-Morales et al 2017) and its interaction with the insect, Leptoglossus dilaticollis Guérin-Méneville (Gallardo-Yobal et al 2020). The species has a narrow distribution in the Sierra Madre Oriental province (western center of the state of Tamaulipas), include five populations (www.naturalista.mx) in the tropical mountain cloud forest and the pine-oak forest between 1,500 and 1,600 m asl.…”

Section: O N L I N E F I R S Tmentioning

confidence: 99%

“…We collected seeds in May and June, 2019, when the fruits were ripe but before dehiscence to avoid losing the seeds. We collected three fruits, pest and disease-free, from each of 30 randomly distributed M. alejandrae trees in each one of the two sites, specially avoiding those frequently damaged by the leaf-footed bug, L. dilaticollis (Gallardo-Yobal et al 2020). Distance between M. alejandrae trees was a minimum of 50 m and a maximum of 100 m in the two study sites.…”

Section: O N L I N E F I R S Tmentioning

confidence: 99%

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Light quality and temperature fluctuation promote the germination of Magnolia alejandrae (Magnoliaceae, sect. Macrophylla), a critically endangered species endemic to northeast Mexico

Gallardo-Yobal¹,

Rosa‐Manzano²,

Castro-Nava³

et al. 2022

Bot. Sci.

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Background: Magnolia alejandrae is a critically endangered species and endemic to the Sierra Madre Oriental in northeastern Mexico. The abiotic requirements for its germination, such as light and temperature, are unknown. Hypotheses: White light and temperature fluctuations will promote the germination of M. alejandrae and seeds from site with higher humidity will have increased germination percentage. Study species: Magnolia alejandrae. Study sites and dates: El Farallón in the Jaumave municipality and Los San Pedros in the Güémez municipality, Tamaulipas, Mexico. May-June 2019. Methods: Four light-quality treatments (white, red, far-red and darkness) were evaluated, along with two temperature treatments: constant (18/18 ºC) and fluctuating temperatures (8/18 ºC) and two populations (El Farallón and Los San Pedros) on the germination of M. alejandrae. We used twenty seeds of the study species per experimental unit with five repetitions for each treatment. Results: Light quality influenced the germination of M. alejandrae seeds, having the highest germination (76 %) under white light, followed by 45 % under red light, 9 % under far-red and 5 % in darkness, demonstrating that the seeds of this species are neutral photoblastic. Temperature fluctuation (8/18 °C) enhanced germination of M. alejandrae more than constant temperature (18/18 °C). Conclusions: M. alejandrae seeds respond differentially to light quality and temperature, which has important implications in the reforestation and conservation of the species.

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Section: O N L I N E F I R S Tmentioning

confidence: 99%

Section: O N L I N E F I R S Tmentioning

confidence: 99%

Light quality and temperature fluctuation promote the germination of Magnolia alejandrae (Magnoliaceae, sect. Macrophylla), a critically endangered species endemic to northeast Mexico

Gallardo-Yobal¹,

Rosa‐Manzano²,

Castro-Nava³

et al. 2022

Bot. Sci.

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Evaluation of Ethanol Extract of Magnolia alejandrae (Magnoliales: Magnoliaceae) against Tetranychus merganser (Acari: Tetranychidae)

Olazaran-Santibañez,

Heinz-Castro,

Rivera

et al. 2024

Journal of Entomological Science

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Tetranychus merganser Boudreaux (Acari: Tetranychidae) is one of the most economically important mite pests of papaya (Carica papaya L.) crops grown along the Gulf of México. Control of this mite depends mainly on chemical insecticides. This research aims to evaluate the effects of different concentrations (0.1, 0.5, 1, 5, 10, and 15% [v/v]) of the ethanolic extract of Magnolia alejandrae García-Morales and Iamonico (Magnoliaceae) leaves on T. merganser adult females, as well as to obtain information about the chemical composition of the extract. The ethanolic extracts contained some phytochemicals such as phenolic compounds, alkaloids, glycosides, ketones, terpenes, and quinones. Females treated with 0.1 and 15% (v/v) of the extract showed mortality of 0.0% and 33.3% at 72 h, respectively, as compared to the control treatment. The mites treated with 15% (v/v) of the extract decreased their oviposition rate (5.90, 5.35, and 4.77 eggs/female), compared to the control treatment (13.27, 13.95, and 14.39 eggs/female) at 24, 48, and 72 h, respectively, which led to a reduction in the growth rate. The feeding damage caused by T. merganser was reduced at high concentrations. Magnolia alejandrae leaf ethanolic extract has potential for development as a control agent for T. merganser.

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Effect of Magnolia alejandrae1 on Oligonychus punicae Females2

López-Guerrero,

Chacón-Hernández,

Olazarán-Santibáñez

et al. 2024

Southwestern Entomologist

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Leptoglossus dilaticollis (Guérin-Méneville) (Hemiptera: Coreidae) on Magnolia alejandrae (Magnoliaceae) in Northeast Mexico

Cited by 3 publications

References 13 publications

Light quality and temperature fluctuation promote the germination of Magnolia alejandrae (Magnoliaceae, sect. Macrophylla), a critically endangered species endemic to northeast Mexico

Light quality and temperature fluctuation promote the germination of Magnolia alejandrae (Magnoliaceae, sect. Macrophylla), a critically endangered species endemic to northeast Mexico

Evaluation of Ethanol Extract of Magnolia alejandrae (Magnoliales: Magnoliaceae) against Tetranychus merganser (Acari: Tetranychidae)

Effect of Magnolia alejandrae1 on Oligonychus punicae Females2

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