Extension of two Caulerpa species along the Tunisian coast

Langar, Habib; Djellouli, Aslam Sami; Sellem, Fériel; Abed, Amor El

doi:10.1652/1400-0350(2002)008[0163:eotcsa]2.0.co;2

Cited by 12 publications

(4 citation statements)

References 3 publications

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“…Further regional dispersion in subsequent years occurred in an almost exponential manner and new colonies appeared without a clear spatial pattern in localities separated by hundreds of metres to tens of kilometres. This rapid and discontinuous regional spread is similar to that described by Langar et al (2002) on the Tunisian coast and by Ruitton et al (2005a) along the French Mediterranean coast. This pattern of spread has been attributed to the efficient reproductive mechanisms reported for C. racemosa, both sexual (Panayotidis & Žuljević, 2001) and vegetative (Renoncourt & Meinesz, 2002), that determine its higher colonisation potential relative to other invasive Caulerpales (e.g.…”

Section: Discussionsupporting

confidence: 80%

Spread of the invasive alga Caulerpa racemosa var. cylindracea (Caulerpales, Chlorophyta) along the Mediterranean Coast of the Murcia region (SE Spain)

Ruiz¹,

Marín-Guirao²,

Bernardeau-Esteller³

et al. 2011

Anim. Biodiv. Conserv.

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The aim of this paper was to document the appearance and spread of the green alga Caulerpa racemosa along the coast of Murcia in south-eastern Spain. It was found for the first time in the area in 2005 and over the next two years the number of new sightings increased almost exponentially. In the period 2005-2007 the total surface area colonised by the alga in the region was estimated to be at least 265 ha. Benthic assemblages colonised by the alga were rocky bottoms with photophilic algae, dead P. oceanica rhizomes, infralittoral and circalittoral soft bottoms and maerl beds. No penetration of the alga was observed in P. oceanica meadows, except in one locality. Biometric analysis indicated high vegetative development in the established colonies in comparison to those described in other Mediterranean areas. Rapid spreading dynamics observed in the Murcia region is a potential threat for native benthic communities.

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Section: Discussionsupporting

confidence: 80%

Spread of the invasive alga Caulerpa racemosa var. cylindracea (Caulerpales, Chlorophyta) along the Mediterranean Coast of the Murcia region (SE Spain)

Ruiz¹,

Marín-Guirao²,

Bernardeau-Esteller³

et al. 2011

Anim. Biodiv. Conserv.

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“…R.E. Norris* Cap Bon, 1996Est Piazzi et al, 2001 Neosiphonia sphaerocarpa (Børgesen) Djellouli et al, 2006Sousse, 1926Est Hamel, 1926Ben Alaya, 1971;Ben Maiz, 1985;1995;Ben Maiz et al, 1987;Ben Mustapha & Hattour, 1992;Bradai & Jribi, 1997;Belkhiria, 1999;Verlaque et al, 2000Verlaque et al, , 2003Ben Mustapha et al, 2002Langar et al, 2002Langar et al, , 2007Ben Mustapha & Afli, 2007;Mezgui et al, 2007;Shili et al, 2010;Zerzeri et al, 2010; Djellouli, 2000;Ben Mustapha et al, 2002;Langar et al, 2006;Piazzi et al, 2005;…”

Section: Ind -Pacmentioning

confidence: 99%

Review of alien marine macrophytes in Tunisia

Sghaier¹,

Zakhama‐Sraieb

Mouelhi

et al. 2015

Medit. Mar. Sci.

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In the present study, the list of alien marine macrophytes introduced into Tunisia was updated in the light of available data and new observations. A total of 27 alien marine macrophytes have been recorded so far from Tunisia: 18 Rhodophyta, 3 Ochrophyta, 5 Chlorophyta and 1 Magnoliophyta. For each species, the locality (-ies), the year (or) period and the source of the first observation in Tunisia are given. The distribution and the status (casual, cryptogenic, established or questionable) of species in Tunisia were evaluated and, where appropriate, discussed. Among them, Hypnea cornuta is reported for the first time from Tunisia. Fourteen alien marine macrophytes are established, whereas seven cryptogenic and two casual species require further investigation. Eleven species are considered as invasive or potentially invasive in the Mediterranean Sea: Acrothamnion preissii, Asparagopsis armata, A. taxiformis Indo-Pacific lineage, Hypnea cornuta, Lophocladia lallemandii, Womersleyella setacea, Caulerpa chemnitzia, C. cylindracea, C. taxifolia, Codium fragile subsp. fragile and Halophila stipulacea. Finally, the case of four questionable species is also discussed.

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“…Invasive species represent an added pressure on ecosystem functioning and fisheries. Among the exotic invasive species recorded in the Mediterranean Sea (Galil, 2000;Zenetos et al, 2005), several have been recorded in Tunisian coastal ecosystems and specifically in the Gulf of Gabes; for example, the green algae Caulerpa taxifolia and C. racemosa (Langar et al, 2002), the pearl oyster Pinctada radiata (Tlig-Zouari et al, 2009), blue portunid crabs Portunus segnis (Rabaoui et al, 2015) and Callinectes sapidus (Mancinelli et al, 2017) and the tropical scyphozoan Rhopilema nomadica (Daly Yahia et al, 2013) (see Fig. 6.…”

Section: Introductionmentioning

confidence: 99%