Changes in the fatty acid composition of Fucus virsoides J. Agardh in response to the type of substratum

Najdek-Dragić, Mirjana; Iveša, Ljiljana; Paliaga, Paolo; Blažina, Marija; Čelig, Ana (2014) Changes in the fatty acid composition of Fucus virsoides J. Agardh in response to the type of substratum. Acta Adriatica, 55 (1). pp. 19-30. ISSN 0001-5113

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Abstract

The effect of the substratum type (natural, limestone, or artificial, concrete) on the fatty acid composition of Fucus virsoides in six habitats around the harbours and beaches of the Istrian coast (northern Adriatic Sea) was investigated during the summer, the period of maximum development. All habitats of F. virsoides were regulated by very similar environmental factors and were exposed to moderate anthropogenic influences. F. virsoides growing on artificial substrata was characterised by lower concentrations of fatty acids, lower proportions of fatty acids among total lipids, higher C16:0/18:1 ratios (FA: 6.7±0.6 mg g-1 d.w.; FA/TL: 22%; 16:0/18:1: 0.57±0.08) and an overall increase in saturation in comparison to communities growing on natural substrata (FA: 10.2±2.9–12.5±3.4 mg g-1 d.w.; FA/TL: 30.8–33.7%; 16:0/18:1: 0.34±0.11–0.45±0.13). These results likely reflect the less favourable conditions for F. virsoides development on artificial substrates relative to natural substrates. The physiological processes of the algae growing on artificial substrata were more impaired with increasing age (FA: 1.9±0.6 mg g-1d.w.; FA/TL: 18.2%; 16:0/18:1: 0.68±0.08).

Item Type:	Article
Uncontrolled Keywords:	artificial substrata; environment effects; fatty acids; Fucus virsoides; natural substrata
Subjects:	NATURAL SCIENCES NATURAL SCIENCES > Interdisciplinary Natural Sciences > Marine Science
Divisions:	Center for Marine Research
Projects:	Project title Project leader Project code Project type Struktura i fiziologija mikrobnih zajednica frontalnih zona sjevernog Jadrana [83206] Mirjana Najdek-Dragić 098-0982705-2729 MZOS Bioraznolikost bentoskih zajednica u Jadranu: prirodni i antropogeni utjecaji [164684] Ana Travizi 098-0982705-2732 MZOS
Depositing User:	Sofija Konjević
Date Deposited:	21 Apr 2015 09:41
URI:	http://fulir.irb.hr/id/eprint/1736

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