Frontal filament morphogenesis in the salmon louse Lepeophtheirus salmonis

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:32:54Z
Fecha de publicación2001-01-01
ResumenThe objective of the present study was to understand how and when the frontal filament (FF) in the salmon louse Lepeophtheirus salmonis is produced by examining the sequence of morphological changes leading to FF production in the copepodid and early chalimus stages. Atlantic salmon (Salmo salar) were heavily infested with newly molted copepodids. Sea lice were sampled prior to infestation and at 1, 2, 3, 4, 5, 6, 7, 8, and 9 days postinfestation. FF morphogenesis from newly molted copepodid to chalimus II, i.e., through 2 molts, was studied using high-resolution light microscopy of serial transverse and sagittal resin sections. Three groups of cells, identified as A, B, and C, are thought to be involved in the production of the secretions (S1 and S2) that form the filament material. The amount and shape of S1 and S2 and their association with B- and C-group cells, respectively, changed with the molt cycle. The following scenario for FF development is proposed: the first secretion to form after the molt for both copepodid and chalimus stages is S1, and it is formed by B-group cells and becomes the basal plate of the external FE C-group cells produce S2 during mid-intermolt to premolt stage. The S2 becomes the stem of the external FE In premolt larvae, S1 and S2 were contained within a cuticle-lined invagination that had a form similar to that of the extruded filament. The axial duct present in both copepodid and chalimus originates from the A-group cells and probably carries a secretion used to attach the filament to the host. This study provides strong evidence that L. salmonis produces a new filament with each molt, creating the possibility of using a sea lice control method based on interference with filament production more feasible.es_ES
Doihttps://doi.org/10.2307/3285094es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4720
Idiomaenes_ES
EditorialAMER SOC PARASITOLOGISTSes_ES
RelaciónJournal of Parasitologyes_ES
URL relacionadohttps://doi.org/10.2307/3285094es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteJournal of Parasitology
TítuloFrontal filament morphogenesis in the salmon louse Lepeophtheirus salmonises_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorGonzalez-Alanis, P
AutorWright, GM
AutorJohnson, SC
AutorBurka, JF
AutorGonzalez-Alanis, Pes_ES
AutorWright, GMes_ES
AutorJohnson, SCes_ES
AutorBurka, JFes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número3es_ES
Rango de páginas561-574es_ES
URL relacionadahttps://doi.org/10.2307/3285094
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen87es_ES

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