Caulerpa racemosa ((Forssk.) J.Agardh, 1873)

Killer algae
Caulerpa_racemosa_01 Caulerpa_racemosa_02

Description 1

Green siphonal algae, comprised of a part lying on soil with stolons of 0,5 and 1 mm of diameter (from which multiple thin rhizoids arise), and a straight part comprised of fronds of 10-25 cm in height, divided in a distichous or radial way and with hemispherical and inflated pinnules which are characterised by their racemose appearance.

Biology 1

Annual and pseudo-perennial species, it keeps a portion of the thallus in each new season. They reproduce by means of holocarpic reproduction; the entire thallus participates in the formation of gametes. They also reproduce asexually by means of formation of propagules and fragmentation. Their seasonal dynamics has a maximum growth in October and a minimum in April. Their vegetative growth rate is high, as the sexual propagules multiply the probability and speed of spreading.

Habitat 1

Any biotope in the first 60 m of depth and any substratae, either hard (rocky) or soft (sandy). It prefers bottoms deeper than 20 m, where they have colonised the main infralittoral habitat types and part of circalittoral habitats: biocoenosis of photophyle algae on rocks, grasslands of P. oceanica and detrital sedimentary bottoms with and without maërl communities.

Sources 1

Spanish Catalogue of Exotic Invasive Species, Project invasIBER

Spanish Catalogue of Exotic Invasive Species - Algae 1

Fuentes y Créditos

  1. Adaptado por INVASORES - administrador de un trabajo de (c) cartotragsatec, algunos derechos reservados (CC BY),

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