Naslov
Reproduction of Caulerpa taxifolia in the Mediterranean Sea

Autori
Žuljević, Ante ; Antolić, Boris

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
International Caulerpa taxifolia - Conference Proceedings / Williams, Erin ; Grosholz, Edwin - San Diego (CA) : University of California, Department of Envinronmental Science and Policy, 2002, 1-7

Skup
International Caulerpa taxifolia

Mjesto i datum
San Diego (CA), Sjedinjene Američke Države, 31.01.2002. - 01.02.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
reproduction; Caulerpa taxifolia; Mediterranean Sea

Sažetak
The introduced tropical alga Caulerpa taxifolia (Vahl) C. Agardh has been rapidly spreading since the mid-1980s throughout the Mediterranean Sea. This expansion is a result of wide ecological range of substrates, habitats, light, temperature and nutrients, and the lack of preda-tory species, and extremely successful vegetative reproduction. Regeneration of a whole alga is possible from each part of the algae thallus: fronds and pinnules, stolons or hairlike tiny rhiz-oids. In nature, vegetative reproduction most often occurred due to cuttings of fronds. At 25°C, formation of a whole small plant including fronds, stolons and rhizoids, from a cutting, oc-curred within 10 days following a similar pattern of regeneration. The regeneration from small pieces of thalli becomes a great problem during eradication efforts, because such small frag-ments are almost impossible to find and collect in the field. In tropical regions, this monoecious species also reproduces sexually by producing both types of gametes inside the same plant. In the Mediterranean Sea, thalli of C. taxifolia became fertile. They are easily detected in the field due to reticulate depigmentation and development of papillae mostly on the frond axes. The gametes are released around 27 minutes before sunrise. After release of gametes, the parental plant dies. In the Mediterranean Sea, only male gametes (without pigmentation) were observed. Despite prolific release of male gametes, sexual repro-duction does not occur because female gametes are absent. The reason for the absence of female gametes remains unknown.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA