title: Comparison of the effectiveness of four organic chemoattractants towards zoospores of Ulva pertusa and macrofouling.
abstract: Algal spores respond to many environmental variables, especially to chemical "cues". This chemotactic response can be utilized to attract spores, thereby colonization of a new substrata is possible to be influenced. In this attempt, four chemoattractant candidates were screened against spores of Ulva pertusa to reveal their efficiencies. Attachment and subsequent germination of Ulva spores were effectively influenced by these chemoattractant candidates. In particular 100 microg cm2 of D-glucose coating was found to enhance spore attachment by > 150%. Furthermore, field investigations carried out with test panels, clearly indicate the chemoattractive properties of test coatings. In recent years, various anthropogenic activities and natural hazards cause detrimental impacts on the benthic algae and other fishery resources. Artificial reefs have been laid on many coastal regions to increase or restore marine resources. Chemoattractant coatings can be applied on artificial surfaces to increase the colonization of benthic forms. It also can be used in the mariculture devices. Influence of chemoattractants on Ulva spores and fouling biomass estimated on test panels are discussed.
authors.affiliation: Aquaculture Research Team, East Sea Fisheries Research Institute, NFRDI, Gangneung, Gangwon-Do-210 861, South Korea. pander27@gmail.com
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Lee
authors.forename: M
authors.initials: M
authors.lastname: Sidharthan
authors.forename: Sang Mok
authors.initials: SM
authors.lastname: Jung
authors.forename: Qtae
authors.initials: Q
authors.lastname: Jo
authors.forename: Mohammad M
authors.initials: MM
authors.lastname: Rahman
authors.forename: Hyun Woung
authors.initials: HW
authors.lastname: Shin
mesh_terms: D000268:Adhesiveness / Q000187:drug effects; D000818:Animals; D037421:Anthozoa; D018441:Biofilms; D018533:Biomass; D032701:Biomimetics; D002630:Chemotactic Factors / Q000737:chemistry / Q000494:pharmacology*; D002794:Choline; D020099:Coated Materials, Biocompatible / Q000737:chemistry / Q000494:pharmacology*; D005947:Glucose; D005998:Glycine; D008386:Marine Biology; D000432:Methanol; D008856:Microscopy, Fluorescence; D009930:Organic Chemicals / Q000737:chemistry / Q000494:pharmacology*; D013170:Spores / Q000187:drug effects* / Q000502:physiology; D013997:Time Factors; D044445:Ulva / Q000187:drug effects* / Q000502:physiology
chemical_list: D002630:Chemotactic Factors; D020099:Coated Materials, Biocompatible; D009930:Organic Chemicals; D005947:Glucose; D002794:Choline; D005998:Glycine; D000432:Methanol