A Checklist of the Seaweeds of the Mediterranean and Atlantic Coasts of Morocco. III. Rhodophyceae (Excluding Ceramiales)

Benhissoune, Saïd; Boudouresque, C. F.; Perret-Boudouresque, Michèle; Verlaque, Marc

doi:10.1515/bot.2002.041

Cited by 36 publications

(16 citation statements)

References 26 publications

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“…Thus, it seems likely that the SIP sample, located in the Mediterranean, could also be a marginal population of G. lanceola . This would be in agreement with the observation that even in Morocco, G. lanceola is common along Atlantic shores (Gayral, ) while it has gone largely unrecorded at Mediterranean locations (Benhissoune et al ., ). Therefore, further work is still needed and, in particular, estimates of genetic diversity for samples collected well within the central range of G. lanceola (i.e.…”

Section: Discussionmentioning

confidence: 97%

Low genetic variation and isolation of northern peripheral populations of a red seaweed (Grateloupia lanceola)

Maneiro

Couceiro

Bárbara

et al. 2011

Aquatic Conserv: Mar. Freshw. Ecosyst.

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ABSTRACT1. Marine macroalgae are rarely considered from the point of view of conservation and the assessment of their conservation status is often limited by a lack of appropriate data. The red algae Grateloupia lanceola is a common inhabitant of Atlantic rocky shores along West Africa that also occurs in a small number of enclaves in the north-west Iberian Peninsula (NWIP).2. NWIP populations are notoriously separated from the main range of the species, and were proposed as candidates for inclusion in the regional list of species of conservation concern.3. In an attempt to provide further information to assess the status of these populations, amplified fragment length polymorphism (AFLP) and mitochondrial cytochrome oxidase subunit 2 and subunit 3 gene (cox2-3) sequences were used to investigate their genetic structure in the Iberian Peninsula. In contrast with the absence of variation in the cox2-3 region, AFLP revealed significant genetic differentiation and a clear isolation by distance pattern for samples separated by 100 s to 1000 km along Iberian shores.4. Together with assignment/exclusion tests, these results suggest that G. lanceola has geographically restricted dispersal, and indicate that NWIP sites are probably demographically isolated from other conspecifics. Therefore, it would be a mistake, from a conservation perspective, to assume that these populations may be subsidized by arrivals from distant populations located within the main range of the species.5. On a regional scale, most NWIP sites cluster into a single genetic unit with low genetic variation. Altogether, these results support the listing of NWIP populations of G. lanceola as vulnerable.

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Section: Discussionmentioning

confidence: 97%

Low genetic variation and isolation of northern peripheral populations of a red seaweed (Grateloupia lanceola)

Maneiro

Couceiro

Bárbara

et al. 2011

Aquatic Conserv: Mar. Freshw. Ecosyst.

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“…Reproductive structures were not seen. Benhissoune et al (2002b) report bibliographically the presence of this species based on Bornet's citation (1892), Debray (1897), Gattefossé and Werner (1935) and Dangeard (1949) for the Atlantic coast of Morocco.…”

Section: Descriptionmentioning

confidence: 99%

“…Dangeard, R. pseudopalmata and R. pseudopalmata var. fuscopurpurea (Conde et al 1996;Kazzaz and Riadi 2000;Benhissoune et al 2002aBenhissoune et al , 2002bAntolić et al 2013). Besides the fact that all these species are characterized by an erect thallus attached to the substrata by a single basal part except R. ardissonei, which have a prostate habit, other characters help to distinguish them from R. holmesii.…”

Section: Remarksmentioning

confidence: 99%

First record of Rhodymenia holmesii (Rhodymeniaceae, Rhodophyta) for the Mediterranean Sea from Morocco

et al. 2016

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Background: The rhodymenialean red algal species Rhodymenia holmesii was collected in the lower intertidal zones from Dalya and Al-Hoceima (Northern Morocco, Mediterranean Sea). This represents the first record and description in the Mediterranean Sea. Results: Moroccan materiel was studied in detail and compared with other closely related species. Descriptions of the morphological features reveal thalli with flaccid blades, 8 cm long, regularly dichotomously branched and attached with stoloniferous holdfast. Anatomically, cortical region composed of 2-3 cell layers and medulla composed of 3-5 cell layers. Conclusions: This finding indicates that the biodiversity of the related sites is probably richer than generally thought, and other phycological studies will increase the known algal biodiversity of the region.

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“…La fronde est constituée d'un ensemble d'axes principaux à croissance illimitée porteurs de ramifications latérales à croissance limitée, ce qui donne au thalle une forme pyramidale. Cette espèce forme des peuplements denses sur tous les fonds rocheux en mode battu depuis le niveau des basses mers de vives eaux jusqu'à une profondeur de 20 m [24,25]. G. sesquipedale représente plus de 90 % de la récolte d'algues agarophytes sur les côtes du Maroc.…”

Section: -2 Présentation Du Matériel D'étudeunclassified

Variabilité interspécifique de trois algues rouges : Hypnea musciformis, Gracilaria multipartita et Gelidium sesquipedalen(Rhodophycées) de la côte atlantique marocaine

Mouradi¹,

Chikhaoui²,

Fekhaou³

et al. 2010

Afrique Science: Revue Internationale Des Sciences Et Technologie

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Interspecific variability of the red algae: Hypnea musciformis, Gracilaria multipartita and Gelidium sesquipedale (Rhodophyceae) of the Moroccan atlantic coastTotal analysis of the growth of three red algae species; Hypnea musciformis, Gracilaria multipartita and Gelidium sesquipedale were undertaken with an aim of determining interspecific variability within the same natural environment. The studied site is the beach of Mehdia located at the north of the Moroccan Atlantic coast. The results show specific differences in the growth rates of the three studied species. Gracilaria multipartita presents a significant development of the growth parameters like the size, the weight and the total ramification, especially for the aestival period compared to Gelidium sesquipedale and Hypnea musciformis. The active growth periods of Gracilaria multipartita are characterized by slightly important temperatures and light intensities and by high percentages of nitrates and phosphates. On the other hand, the growth of Hypnea musciformis shows fluctuations due to the variations of the environmental factors. The growth of Gelidium sesquipedale is slow and seems more under the influence of intrinsic factors than environmental factors.

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A Checklist of the Seaweeds of the Mediterranean and Atlantic Coasts of Morocco. III. Rhodophyceae (Excluding Ceramiales)

Cited by 36 publications

References 26 publications

Low genetic variation and isolation of northern peripheral populations of a red seaweed (Grateloupia lanceola)

Low genetic variation and isolation of northern peripheral populations of a red seaweed (Grateloupia lanceola)

First record of Rhodymenia holmesii (Rhodymeniaceae, Rhodophyta) for the Mediterranean Sea from Morocco

Variabilité interspécifique de trois algues rouges : Hypnea musciformis, Gracilaria multipartita et Gelidium sesquipedalen(Rhodophycées) de la côte atlantique marocaine

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