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Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
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Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
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Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
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Diversidad de herpesvirus en Procellariiformes del Atlántico

Laura Baes1,2, Carolina Reigada2, Aricia Duarte-Benvenuto3

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Se detectaron herpesvirus en el 24% de las aves marinas amenazadas de Procellariiformes. Este estudio identifica nuevos linajes de herpesvirus y amplía los rangos de anfitriones conocidos, destacando los riesgos potenciales de transmisión interhemisférica.

Palabras clave:
DiomedeidaeMardivirusProcelariidaealfaherpesvirusaves marinasencuesta de virus

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Área de la Ciencia:

  • Virología Avícola
  • Ecología de Enfermedades de la Vida Silvestre
  • Ornitología Marina

Sus antecedentes:

  • Las aves marinas Procellariiformes enfrentan amenazas globales significativas.
  • Los patógenos virales, particularmente los herpesvirus, son poco comprendidos en este grupo.
  • Los herpesvirus pueden causar enfermedades graves y establecer latencia en las aves.

Objetivo del estudio:

  • Estudiar la infección por herpesvirus en Procellariiformes varados en Brasil.
  • Identificar los tipos de herpesvirus y sus anfitriones dentro de este grupo de aves marinas.
  • Comprender las implicaciones para la salud de las aves marinas y la circulación viral.

Principales métodos:

  • Estudio de 50 individuos de Procellariiformes de 12 especies varadas a lo largo de la costa brasileña (2017-2023).
  • Pan-PCR anidada dirigida al gen de la polimerasa de ADN para la detección de herpesvirus.
  • Análisis de secuencias para identificar tipos de herpesvirus y agrupamiento filogenético.

Principales resultados:

  • DNA de herpesvirus detectado en el 24% (12/50) de las aves encuestadas.
  • Se identificaron siete tipos distintos de secuencias de herpesvirus, todos dentro del género "i"Mardivirus"i".
  • Primera detección de herpesvirus reportada en el Albatros de ceja negra, la Pardela de Cabo Verde, la Pardela cenicienta y el Petrel gigante del sur.
  • Nuevos reportes de anfitriones para el Albatros de nariz amarilla y la Pardela cenicienta.
  • No se observaron lesiones asociadas durante el examen histopatológico.

Conclusiones:

  • Los hallazgos amplían el rango de anfitriones conocidos de herpesvirus en Procellariiformes.
  • Sugiere una posible circulación de herpesvirus entre las colonias del hemisferio sur y norte y las áreas no reproductivas.
  • Enfatiza la necesidad de estudios integrados para comprender la dinámica de transmisión de herpesvirus en aves marinas.