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Appendicularians (Tunicata) of Banco Chinchorro, Caribbean Sea

Por: Castellanos Osorio, Iván Arturo. Licenciado [autor/a].
Tipo de material: Artículo impreso(a) y electrónico Artículo impreso(a) y electrónico Tema(s): Appendicularia | Zooplancton | Composición de la población | ZoogeografíaTema(s) en inglés: Appendicularia | Zooplankton | Population composition | ZoogeographyDescriptor(es) geográficos: Reserva de la Biosfera Banco Chinchorro (Quintana Roo, México) Nota de acceso: Acceso en línea sin restricciones En: Bulletin of Marine Science. volumen 73, número 1 (July 2003), páginas 133-140. --ISSN: 0007-4977Número de sistema: 52031Resumen:
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Zooplankton samples from Banco Chinchorro were taken in the surface layer, in September 1999 and March 2000. Eleven species of Appendicularia, belonging to three genera, were identified from 16 samples collected in both reef lagoon and oceanic areas off Banco Chinchorro. Oikopleura longicauda was the most abundant in the surveyed area (69.81%), followed by O. fusiformis f. typica and Fritillaria formica with 8.30% of the overall numbers for each one. Maximum abundance was recorded at stations 7 (5943 org/1000 m³) and 3 (5792 org/1000 m³) both taken in September in the oceanic area. In March, mainly from collection within the reef lagoon, a density of 3582 org/1000 m³ was recorded at station 3. The species richness of the appendicularians and its numerical abundance was remarkably higher (92.24%) at the reef lagoon in March (stations 14, 17, 18, 19); whereas, in stations 15 and 16 they showed similar abundance and richness as in September. The richness of appendicularians and average abundance was 5.9 times higher in the oceanic area (3222 org/1000 m³) than in the reef lagoon (539 org/1000 m³).

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Zooplankton samples from Banco Chinchorro were taken in the surface layer, in September 1999 and March 2000. Eleven species of Appendicularia, belonging to three genera, were identified from 16 samples collected in both reef lagoon and oceanic areas off Banco Chinchorro. Oikopleura longicauda was the most abundant in the surveyed area (69.81%), followed by O. fusiformis f. typica and Fritillaria formica with 8.30% of the overall numbers for each one. Maximum abundance was recorded at stations 7 (5943 org/1000 m³) and 3 (5792 org/1000 m³) both taken in September in the oceanic area. In March, mainly from collection within the reef lagoon, a density of 3582 org/1000 m³ was recorded at station 3. The species richness of the appendicularians and its numerical abundance was remarkably higher (92.24%) at the reef lagoon in March (stations 14, 17, 18, 19); whereas, in stations 15 and 16 they showed similar abundance and richness as in September. The richness of appendicularians and average abundance was 5.9 times higher in the oceanic area (3222 org/1000 m³) than in the reef lagoon (539 org/1000 m³). eng

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