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Acta Botanica Mexicana
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Acta Botanica Mexicana
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Diversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México

Authors: Michael L. Parsons; Yuri B. Okolodkov; José A. Aké-Castillo;

Diversidad y morfología de las especies de Pseudo-nitzschia (Bacillariophyta) del parque nacional Sistema Arrecifal Veracruzano, suroeste del Golfo de México

Abstract

Con el fin de evaluar el riesgo para el ecosistema marino y la salud humana, se estudió la diversidad y la morfología de las diatomeas del género Pseudo-nitzschia del Parque Nacional Sistema Arrecifal Veracruzano, en el suroeste del Golfo de México. Se realizaron muestreos semanalmente en siete sitios georeferenciados durante un ciclo anual de mayo de 2005 a mayo de 2006. Las muestras se tomaron de la capa superficial de 30 cm de la columna de agua con una red fitoplanctónica de 20 µm de tamaño de malla. Con ayuda de los microscopios fotónico, electrónico de transmisión y electrónico de barrido se identificaron siete especies de Pseudo-nitzschia: las no tóxicas P. cf. subcurvata (estudiada solamente en el microscopio fotónico) y P. brasiliana, y las potencialmente venenosas, causantes de la intoxicación amnésica por consumo de mariscos (ASP) debido al ácido domoico: P. calliantha, P. cuspidata, P. delicatissima, P. pseudodelicatissima y P. pungens. Se concluye que existe riesgo potencial de ASP en el área de estudio. P. brasiliana y P. calliantha son nuevos registros para el suroeste del Golfo de México. Las comparaciones con los estudios en el norte del mismo cuerpo marino indican que la diversidad de Pseudo-nitzschia en el Golfo de México puede ser más alta que la documentada en el presente, y que algunas especies (e.g., P. multiseries) pueden tener limitaciones ecológicas y biogeográficas (e.g., temperaturas menores de 27 oC).

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
gold