Un enfoque integrativo revela la identidad y la distribución interoceánica de  la diatomea <i>Halamphora adumbratoides</i> Stepanek & Kociolek 2018 (Bacillariophyceae: Amphipleuraceae)

F. Omar López-Fuerte; C. Lora-Vilchis; G. Murugan

doi:10.18387/polibotanica.58.2

F. Omar López-Fuerte Universidad Autónoma de Baja California Sur. Departamento Académico de Ciencias Marinas y Costeras, Carretera al Sur, km. 5.5, La Paz, Baja California Sur, México, C.P. 23080. https://orcid.org/0000-0002-0828-9107
C. Lora-Vilchis Centro de Investigaciones Biológicas del Noroeste S. C. Av. Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B. C. S. México, C.P. 23096. https://orcid.org/0000-0003-1839-6974
G. Murugan Centro de Investigaciones Biológicas del Noroeste S. C. https://orcid.org/0000-0002-2672-7430

DOI: https://doi.org/10.18387/polibotanica.58.2

Palabras clave: first recording, Gulf of California, Pacific Ocean, psbC, rbcL, SSU.

Resumen

Halamphora adumbratoides fue descrita en 2018 en muestras procedentes del Océano Atlántico, siendo Florida Bay, USA, la localidad tipo para esta especie. En esta publicación, presentamos las características morfológicas y la identidad molecular de este taxón (cepa CIBA 160) colectado en el Golfo de California, México (en la región del Océano Pacífico). Las células de la cepa CIBA 160, fueron obtenidas mediante cultivos de laboratorio y muestra características que no corresponden con la descripción original, específicamente la forma de la valva y la presencia de poros al final de cada extremo del margen dorsal del rafe. En relación al tamaño, la longitud (4.1–6.6 μm) de la cepa CIBA 160 es más corta que la descripción original (10.0–18.0 μm). Sin embargo, el ancho de la valva y el número de estrías coinciden con los intervalos de la descripción. A nivel molecular, las secuencias del DNA de la cepa CIBA 160 mostraron 100, 99.8, y 99.5% de similitud, respectivamente con las secuencias de SSU, rbcL, y psbC de células de H. adumbratoides originarias del Océano Atlántico. Nuestro trabajo presenta el primer registro de la distribución interoceánica y el segundo registro para esta especie desde su descripción.

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