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Mar. Drugs 2009, 7(3), 367-400; doi:10.3390/md7030367

The Influence of Bioactive Oxylipins from Marine Diatoms on Invertebrate Reproduction and Development

School of Marine Science and Technology, Newcastle University, Ridley Building, Claremont Road, Newcastle upon Tyne, NE1 7RU, England, UK
Received: 16 July 2009 / Revised: 6 August 2009 / Accepted: 19 August 2009 / Published: 21 August 2009
(This article belongs to the Special Issue Marine Bioactive Compounds Acting on Animal Reproduction)
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Diatoms are one of the main primary producers in aquatic ecosystems and occupy a vital link in the transfer of photosynthetically-fixed carbon through aquatic food webs. Diatoms produce an array of biologically-active metabolites, many of which have been attributed as a form of chemical defence and may offer potential as candidate marine drugs. Of considerable interest are molecules belonging to the oxylipin family which are broadly disruptive to reproductive and developmental processes. The range of reproductive impacts includes; oocyte maturation; sperm motility; fertilization; embryogenesis and larval competence. Much of the observed bioactivity may be ascribed to disruption of intracellular calcium signalling, induction of cytoskeletal instability and promotion of apoptotic pathways. From an ecological perspective, the primary interest in diatom-oxylipins is in relation to the potential impact on energy flow in planktonic systems whereby the reproductive success of copepods (the main grazers of diatoms) is compromised. Much data exists providing evidence for and against diatom reproductive effects; however detailed knowledge of the physiological and molecular processes involved remains poor. This paper provides a review of the current state of knowledge of the mechanistic impacts of diatom-oxylipins on marine invertebrate reproduction and development. View Full-Text
Keywords: polyunsaturated aldehydes; reproductive toxicity; apoptosis; developmental stability; teratogen polyunsaturated aldehydes; reproductive toxicity; apoptosis; developmental stability; teratogen

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Caldwell, G.S. The Influence of Bioactive Oxylipins from Marine Diatoms on Invertebrate Reproduction and Development. Mar. Drugs 2009, 7, 367-400.

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