First record of Cymatodiscus planetophorus (Bacillariophyta) for littorals of NW Mexico; ecological remarks
AbstractAs part of a floristic analysis of diatoms (Bacillariophyta) at Reserva de la Biosfera Marismas Nacionales in Nayarit, Mexico, Cymatodiscus planetophorus is recorded for the first time in the northwestern coasts of Mexico. Samples were collected from various substrata in wetlands with an est...
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Published in: | Revista bío ciencias Vol. 9 |
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Main Authors: | , , , |
Format: | Journal Article |
Language: | English Portuguese |
Published: |
Universidad Autónoma de Nayarit
01-01-2022
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Subjects: | |
Online Access: | Get full text |
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Summary: | AbstractAs part of a floristic analysis of diatoms (Bacillariophyta) at Reserva de la Biosfera Marismas Nacionales in Nayarit, Mexico, Cymatodiscus planetophorus is recorded for the first time in the northwestern coasts of Mexico. Samples were collected from various substrata in wetlands with an estuarine flux in areas of production and fishing of pleasure oyster Crassostrea corteziensis and mullet Mugil curema, respectively. Specimens of C. planetophorus were successfully distinguished from Cymatotheca weissflogii on the basis of meristic and morphological characteristics using optic microscopy. Their frequency and abundance on the inspected substrata confirm the benthic/tychoplanktic habit of this taxon. Both M. curema and C. corteziensis are added to the list of consumers of C. planetophorus; the latter also as new substrate. Complementary ecological remarks are provided. ResumenCymatodiscus planetophorus (Bacillariophyta) se registra por primera vez en las costas del Noroeste de México, como parte de un análisis florístico de diatomeas de la Reserva de la Biosfera Marismas Nacionales en Nayarit, México. Se recolectaron muestras de varios sustratos en humedales con flujo estuarino en áreas de producción y pesca de ostión de placer Crassostrea corteziensis y liza Mugil curema, respectivamente. Especímenes de C. planetophorus fueron identificados con base en sus características merísticas y morfológicas mediante microscopía óptica, discriminándolos morfológicamente de Cymatotheca weissflogii. Según su frecuencia en los sustratos examinados se confirma el hábito bentónico/ticoplanctónico de este taxón. Mugil curema y C. corteziensis se agregan a la lista de consumidores de C. planetophorus; este último como nuevo sustrato. Asimismo, se proporcionan observaciones ecológicas complementarias. |
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ISSN: | 2007-3380 2007-3380 |
DOI: | 10.15741/revbio.09.e1176 |