Document Detail

Can UV radiation affect benthic deposit-feeders through biochemical alteration of food resources? An experimental study with juveniles of the benthic polychaete Eupolymnia nebulosa.
MedLine Citation:
PMID:  21388674     Owner:  NLM     Status:  Publisher    
The growth, tentacle development and feeding activity of the benthic polychaete Eupolymnia nebulosa were examined to determine whether UV might affect marine deposit-feeders indirectly through the modification of the nutritional quality of their resources. Since marine invertebrates have higher nutritional requirements during the period following settlement, we tested the effect of UV-altered phytodetritus on freshly settled juveniles of E. nebulosa. Phytodetritus was prepared from cultures of the diatom Skeletonema costatum either grown under or sheltered from UVB radiation. Sterol content of phytodetritus was unmodified by UV radiation. Conversely, phytodetritus was noticeably depleted in polyunsaturated fatty acids. Growth and tentacle development of juveniles fed on altered phytodetritus were reduced by 35% and 15% respectively, suggesting potential deficiencies in essential nutrients. In response to the lower quality of the phytodetritus, juveniles explored a wider area as they search for food, a strategy that could compensate for low food quality.
Sarah Nahon; Audrey M Pruski; Jean-Claude Duchêne; Laurence Méjanelle; Gilles Vétion; Martin Desmalades; François Charles
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-7
Journal Detail:
Title:  Marine environmental research     Volume:  -     ISSN:  1879-0291     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882895     Medline TA:  Mar Environ Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
UPMC Univ Paris 06, FRE 3350, LECOB, Observatoire Océanologique, F-66651 Banyuls-sur-mer, France; CNRS, FRE 3350, LECOB, Observatoire Océanologique, F-66651 Banyuls-sur-mer, France.
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