Relationships among geographically distant populations of Gracilaria verrucosa (Gracilariales, Rhodophyta) and related species

Rice, Ellen L.; Bird, C. J.

doi:10.2216/i0031-8884-29-4-501.1

Cited by 70 publications

(31 citation statements)

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“…and G. lemaneiformis are two different species of the same genus . Concerning Gracilaria, the material had been usually assigned to G. verrucosa (Dixon and Irvine, 1977;Fredericq and Hommersand, 1989a;Rice and Bird, 1990;etc), a species whose controversial taxonomy has been recently clarified, being the correct name G. gracilis (see Silva et al, 1996). In this regard, only to state that G. verrucosa (Hudson) Papenfuss had been considered the type species of the genus (Fredericq and Hommersand, 1990) Irvine and Steentoft (1995) to replace Fucus verrucosus Hudson, was, in fact, representative of Gracilariopsis.…”

Section: Genusmentioning

confidence: 99%

Marine benthic algae of Namibia

Lluch

2002

Sci. Mar.

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SUMMARY: The first comprehensive study of the marine algal flora of Namibia including descriptions and illustrations of most species is presented. The main objective of this work is to report a flora that, until now, has scarcely been studied. The work compiles all the available information on the marine benthic flora of Namibia and provides new data about it composition and biogeography, as well as detailed descriptions and remarks of most of its species. The samples on which this study is based were collected between 1986 and 1989 in the eulittoral and the upper sublittoral zones of the north half of the Namibian coast. According to the present data, the marine benthic flora of Namibia comprises 196 taxa (147 Rhodophyceae, 20 Phaeophyceae, 15 Ulvophyceae, 6 Cladophorophyceae and 8 Bryopsidophyceae), 21 of which has not been recorded from this coasts. This temperate flora is mainly characterized by a low number of species, a low proportion of Phaeophyceae and a high degree of endemism. Concerning the species number, the flora is quite poor due to both the scarce availability of colonizable substratum and the low diversity of habitats. On the other hand, the low proportion of Phaeophyceae is the reason for which the R/P and (R+C)/P ratios take disproportionately high values and so they are not useful in this geographical area. As regards the degree of endemism, the marine benthic flora of Namibia includes quite a high number of taxa endemic to southern Africa (55 taxa; 28.1% of the flora); 25 of these 55 taxa (12.8% of the flora) are endemic to the biogeographic Benguela Marine Province and only Acrosorium cincinnatum is endemic to the Namibian coasts.Key words: Namibia, marine algae, morphology and anatomy, distribution, biogeography, taxonomy, check-list. RESUMEN: ALGAS BENTÓNICAS MARINAS DE NAMIBIA. -Este trabajo recoge toda la información existente hasta el momento sobre la flora bentónica marina de Namibia y proporciona nuevos datos sobre su composición y biogeografía, además de descripciones detalladas y valoraciones críticas de muchas de sus especies. El trabajo se ha realizado a partir de muestras florísticas recolectadas entre los años 1986 y 1989 en las zonas eulitoral y sublitoral superior de la costa de la mitad norte del país, entre Walvis Bay y la desembocadura del río Kunene. Según los datos actuales, la flora bentónica marina de Namibia está representada por 196 táxones (147 Rhodophyceae, 20 Phaeophyceae, 15 Ulvophyceae, 6 Cladophorophyceae y 8 Bryopsidophyceae), 21 de los cuales no habían sido citados hasta el momento de las costas de este país. Se trata de una flora de carácter templado que se caracteriza principalmente por el bajo número de especies, la escasa proporción de feofíceas y el elevado grado de endemismo. En cuanto al número de especies, la flora de Namibia es relativamente pobre, debido a la escasa disponibilidad de substrato colonizable y a la baja diversidad de hábitats. Por otra parte, la baja proporción de feofí-ceas hace que los índices R/P y (R+C)/P adopten valores desproporc...

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Section: Genusmentioning

confidence: 99%

Marine benthic algae of Namibia

Lluch

2002

Sci. Mar.

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“…Unfortunately, development of a widely accepted scheme for the delimitation of taxa within the Gracilariaceae remains an elusive goal (for a summary of recent progress see Bird & Rice (1990) and Rice & Bird (1990). Species lists (Tables 1, 2) reflect recent taxonomic treatments by Wynne (1986a, b) and Fredericq & Hommersand (1989a, b, 1990.…”

Section: Discussionmentioning

confidence: 99%

“…In the present study, species have been referred to three of the seven genera currently recognized in the family Gracilariaceae: Gracilaria, Gracilariopsis and Hydropuntia (Bird & Rice, 1990). The generic name Hydropuntia (including Polycavernosa Chang e~ Xia, i963) is retained as proposed by Wynne (1986a) until the relationship of this entity to Gracilaria is resolved (Xia & Abbott, 1987;Abbott et al, 1991;Gargiulo et al, 1992;Bird et al, 1992).…”

Section: Discussionmentioning

confidence: 99%

“…Gracilaria verrucosa as circumscribed by Fredericq & Hommersand (1989a) is widely distributed in northern Europe. Analysis of organelle DNA restriction fragment patterns for 11 populations referred to G. verrucosa revealed a core group of populations from Wales, Norway and France to have closely similar profiles to specimens from Argentina and Japan (Rice & Bird, 1990). Consequently, assignment of Japanese specimens to this species (Yabu & Yamamoto, 1988) seems warranted (Table 2).…”

Section: Discussionmentioning

confidence: 99%

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Karyology and cytophotometric estimation of nuclear DNA content variation inGracilaria, GracilariopsisandHydropuntia(Gracilariales, Rhodophyta)

Kapraun

1993

European Journal of Phycology

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“…ou "Short Tandem Repeats" (STR) (Rice & Bird, 1990), possibilitam determinar a diversidade genética em nível do indivíduo, população ou espécie (Wattier et al, 1997).…”

Section: Marcadores Molecularesunclassified

Estudos populacionais em Gracilaria birdiae e G.caudata (Gracilariales, Rhodophyta): aspectos fenológicos, fisiológicos e moleculares

Avres-Ostrock¹

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Relationships among geographically distant populations of Gracilaria verrucosa (Gracilariales, Rhodophyta) and related species

Cited by 70 publications

References 0 publications

Marine benthic algae of Namibia

Marine benthic algae of Namibia

Karyology and cytophotometric estimation of nuclear DNA content variation inGracilaria, GracilariopsisandHydropuntia(Gracilariales, Rhodophyta)

Estudos populacionais em Gracilaria birdiae e G.caudata (Gracilariales, Rhodophyta): aspectos fenológicos, fisiológicos e moleculares

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