Feeding ecology of deep-sea seastars (Echinodermata : Asteroidea): a pigment biomarker approach
Howell, K.L., Billett, D.S.M., Tyler, P.A. and Davidson, R. (2004) Feeding ecology of deep-sea seastars (Echinodermata : Asteroidea): a pigment biomarker approach. Marine Ecology - Progress Series, 266, 103-110.
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Resource partitioning and utilisation of phytodetritus by the abyssal mud-ingesting
seastars Styracaster chuni and Hyphalaster inermis were investigated using pigment biomarker analysis. The chlorophyll and carotenoid pigment composition of the stomach content was examined using high-pressure liquid chromatography. No significant differences were observed between the composition of pigments in the 2 species. Both asteroid species utilise the same phytodetrital resource with no apparent partitioning of that resource. Analysis of specific biomarker pigments together with evidence from previous studies suggest that both species ingest small
chlorophytes, cryptomonads, cyanobacteria, coccoliths and diatoms as part of the phytodetrital component of their diet. Phytodetrital material itself is not thought to be an important food source for H. inermis or S. chuni.
|Keywords:||HPLC, pigments, diet , Asteroidea, deep-sea, resource partitioning|
|Subjects:||Q Science > QH Natural history > QH301 Biology|
|Divisions:||University Structure - Pre August 2011 > National Oceanography Centre (NERC)
University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
|Date Deposited:||13 Oct 2004|
|Last Modified:||01 Jun 2011 03:41|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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