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  Enrichment and purification of Chaoborus kairomone from water: further steps toward its chemical characterization

Tollrian, R., & Von Elert, E. (1994). Enrichment and purification of Chaoborus kairomone from water: further steps toward its chemical characterization. Limnology and Oceanography, 39(4), 788-796.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E37D-2 Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E37E-F
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 Urheber:
Tollrian, Ralph1, Autor              
Von Elert, Eric1, Autor              
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, escidoc:976547              

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 Zusammenfassung: Predatory larvae of the genus Chaoborus release a chemical compound (kairomone) into the water which induces morphological changes, as antipredatory defenses, in daphnids. We present a method for enriching the active compounds released by the larvae directly from their aquatic environment by sorbent extraction. We developed a fast microscale bio-test based on Daphnia pulex morphological response to the kairomone to obtain new information about the kairomone's chemical nature. Carboxyl and hydroxyl groups are essential for kairomone activity. The kairomone can be characterized as a low-molecular weight, non-olefinic hydroxy-carboxylic acid. Separation by reversed-phase HPLC yields only one active fraction. The kairomone can be purified by anion exchange and HPLC. This is the first time a kairomone, which is sensed by Daphnia, has been enriched from water by sorbent extraction technology. This technique of enrichment offers the possibility of following seasonal kairomone concentrations in natural environments.

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Sprache(n): eng - Englisch
 Datum: 1994-06
 Publikationsstatus: Im Druck publiziert
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 Identifikatoren: eDoc: 212085
Anderer: 1492/S 36705
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Titel: Limnology and Oceanography
  Alternativer Titel : Limnol. Oceanogr.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 39 (4) Artikelnummer: - Start- / Endseite: 788 - 796 Identifikator: ISSN: 0024-3590