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Revista Mexicana de Biodiversidad
Article . 2009
Data sources: DOAJ
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Gracilaria, Subgenus Textoriella (Gracilariaceae, Rhodophyta) in the Gulf of Mexico and the Mexican Caribbean Gracilaria, subgénero Textoriella (Gracilariaceae, Rhodophyta) en el golfo de México y el Caribe mexicano

Authors: Kurt M. Dreckmann; Abel Sentíes;

Gracilaria, Subgenus Textoriella (Gracilariaceae, Rhodophyta) in the Gulf of Mexico and the Mexican Caribbean Gracilaria, subgénero Textoriella (Gracilariaceae, Rhodophyta) en el golfo de México y el Caribe mexicano

Abstract

Four species of Gracilaria (Gracilariaceae, Rhodophyta) with textorii-type spermatangial conceptacles (subgenus Textoriella Yamamoto) are recorded for the Gulf of Mexico and the Mexican Caribbean: Gracilaria blodgettii, G. cervicornis, G. mammillaris, and G. tikvahiae. The general distribution of the subgenus for Central America, both Pacific and Atlantic, displays a disjunct pattern explainable based on the geologic vicariant events that interrupted the connection between Pacific and Atlantic at the Isthmuses of Panama (closed 3.1-2.8 million years ago), and Tehuantepec (southern Mexico, closed 4-3.5 million years ago). Gracilaria cuneata/G. crispata, and G. mammillaris (G. hayi)/G. veleroae are 2 pairs of sibling species, or sister taxa, that diverged as a result of the final emergence of the Isthmus, and of the same age as the Central American Isthmus itself.Se registran 4 especies de Gracilaria (Gracilariaceae, Rhodophyta) con conceptáculos espematangiales tipo textorii- (subgénero Textoriella Yamamoto) para el golfo de México y Caribe mexicano: Gracilaria blodgettii, G. cervicornis, G. mammillaris y G. tikvahiae. La distribución general del subgénero para Atlántico y Pacífico de Centroamérica despliega un patrón disyunto explicable por los eventos geológicos vicariantes que interrumpieron la conexión entre Pacífico y Atlántico en los istmos de Panamá (cerrado hace aprox. 3.1-2.8 millones de años) y Tehuantepec (sur de México, cerrado hace aprox. 4-3.5 millones de años). Gracilaria cuneata/G. crispata y G. mammillaris (= G. hayi)/ G. veleroae corresponden a 2 pares de especies hermanas que divergieron como resultado de la emersión del istmo, y con aproximadamente la misma edad del istmo centroamericano.

Keywords

QH301-705.5, biogeografía, Textoriella, florística, Gracilaria, Biology (General), biogeography, floristics

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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!
0
Average
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