Caulerpa racemosa var. cylindracea as a potential source of organic matter for benthic consumers: Evidences from a stable isotope analysis

Gianluca Sara', Paola Rumolo, Daniela Casu, Nicola Sechi, Giulia Ceccherelli

Risultato della ricerca: Articlepeer review

28 Citazioni (Scopus)

Abstract

Caulerpa racemosa var. cylindracea has been invading various types of substrates in wide areas throughout the Mediterranean Sea. However, the effects of the distribution of this alga on zoobenthos are scanty. The aim of this study was to evaluate the effects of C. racemosa invasion on the feeding habits of some zoobenthic taxa inhabiting the upper infralittoral rocky shores. This was done by identifying the isotopic N and C ratios of several potential food sources and testing differences in isotope composition among the taxa collected from areas invaded and not-invaded areas by C. racemosa. Results suggest that C. racemosa detritus was a significant food source for the polychaete Syllis prolifera, the gammarid Corophium sextonae and the gastropods Cerithium rupestre and Pisinna glabrata. They would also suggest that stable carbon and nitrogen isotope ratios deserve further attention as a possible valuable approach to understand the overall effect of C. racemosa spread on the trophic interactions among the species. © Springer Science+Business Media B.V. 2008.
Lingua originaleEnglish
pagine (da-a)1023-1029
Numero di pagine7
RivistaAquatic Ecology
Volume43
Stato di pubblicazionePublished - 2009

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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