Anales de biología Vol. 47 (2025)

Ir a Estadísticas

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https://hdl.handle.net/10201/148549

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    Isolation and characterization of FS01, a lytic bacteriophage infecting Salmonella typhimurium
    (Universidad de Murcia. Servicio de Publicaciones, 2025) Guillén-Vásquez, Abraham; Zumaeta, Kattya; Talledo, Miguel; Sin departamento asociado
    Salmonella contamination represents a health and economic problem. This study isolated and characterized a lytic bacteriophage, FS01, active against S. typhimurium. FS01 showed a MOI of 1, anadsorption rate of 1.9x10-9 mL/min, and a growth curve with an eclipse period of 10 minutes, a latency period of 15 minutes, and a burst size of 10 virions per cell. It has an icosahedral capsid (64.4 nm) and a flexible tail (182.2 nm), suggestive of Siphoviridae family affiliation, with a narrow host range. It is thermally stable between 40–60 ºC for 30 minutes, viable within a pH range of 6–9, and sensitive to chloroform and UV light. FS01 inhibited bacterial growth starting at 3 hours. FS01 exhibits properties of a promising biocontrol agent for decontaminating food and surfaces.
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    A new hybrid of Saxifraga L. (Saxifragaceae)
    (Universidad de Murcia. Servicio de Publicaciones, 2025) Lahora, Agustín; Sin departamento asociado
    Se describe un nuevo híbrido natural del género Saxifraga L. en la provincia de Almería, Saxifraga ×cuatrecasasii nothosubsp. ivorrae Lahora, nothosubsp. nov. [S. camposii Boiss. & Reut. subsp. leptophylla (Willk.) D.A.Webb × S. erioblasta Boiss. & Reut.] y se tipifica Saxifraga ×cuatrecasasii nothosubsp. cuatrecasasii. Se aporta también información nomenclatural y corológica sobre los parentales y los híbridos.
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    Helvella monachella (Scop.) Fr. (Helvellaceae, Pezizales) in Tunisia, a second report to the rare African Ascomycota
    (Universidad de Murcia. Servicio de Publicaciones, 2025) El Mokni, Ridha; Sin departamento asociado
    Helvella monachella (Scop.) Fr. (Helvellaceae, subg. Elasticae) is here reported for the second time among the African Ascomycota group from northwestern Tunisia, based on mycological surveys and analysis of relevant literature. General characteristics together with original photographs are here provided for Tunisian material. Habitat and current distribution of this new discovery in Tunisia are presented. A discriminating key to species of the genus Helvella known in Tunisia is also proposed.
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    First and southernmost records of Tetramesa stipae De Stefani, 1901 (Hymenoptera: Eurytomidae) from Tunisia: a new addition to the African Chalcidoidea
    (Universidad de Murcia, 2025) El Mokni, Ridha; Sin departamento asociado
    The phytophagous eurytomid wasp, Tetramesa stipae (De Stefani, 1901) is newly recorded from Africa. It was collected twice on April and June 2023 in two very distant localities in Tunisia (North Africa). The species inducing galls on Stipella capensis growing in the hedges of olive groves and within ruderal thermophilous floristic communities. Preliminarily data for this taxon together with morpho logical measurements of its galls are here firstly presented. Moreover, coloured illustrations of the Tunisian galls are also provided
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    Infestation level and ecological association of Nosema spp. (Microsporida: Nosematidae) and Varroa destructor (Mesostigmata: Varroidae) in honeybee colonies in south west Nigeria
    (Universidad de Murcia, 2025) Fasasi, Kamilu Ayo; Salami, Saheed Olamide; Azeez, Dauda Ishola; Iwalewa, Zarat Oyindamola; Sin departamento asociado
    The level of infestation and ecological association of Nosema spp. and Varroa destructor was studied in honeybees. The infestation rate (Mn±SD) of V. destructor ranged from 1.05 ± 0.64% to 9.02 ±4.98%. The prevalence of Nosema spp. in Osun State was found torange from low to semi-severe, while in Ogun state, infestation leves varies from moderate to severe. However, in both states severe infestation of spores was observed. A linear negative correlation (r = -0.329) was revealed between the V. destructor and Nosema spp. in honeybees colonies. In general, all the colonies exhibited moderate to severe infection by Nosema spp. spores and 93% of the colonies had V. destructor, which necessitates urgent mitigation measures