Info-disruption: pollution and the transfer of chemical information between organisms.

Many organisms use subtle chemical cues not only to find partners and food, but also to sense the presence of natural enemies and to avoid predation. As we discuss here, an increasing number of studies now show that low, non-toxic concentrations of chemicals, ranging from heavy metals and pesticides to seemingly harmless substances such as surfactants, can disrupt the transfer of chemical information, inducing maladaptive responses in both the signaller and the receiver. Similar to endocrine disruptors, these 'info disruptors' form a new class of chemical threats, which could have far-reaching implications for ecosystem functioning and conservation management.

[1]  H. Sekimoto Plant sex pheromones. , 2005, Vitamins and hormones.

[2]  T. Hanazato Combined effect of the insecticide carbaryl and the Chaoborus kairomone on helmet development in Daphnia ambigua , 1995, Hydrobiologia.

[3]  K. Tang Grazing and colony size development in Phaeocystis globosa (Prymnesiophyceae): the role of a chemical signal , 2003 .

[4]  M. Bölker,et al.  Sexual pheromones and mating responses in fungi. , 1993, The Plant cell.

[5]  R. Forward,et al.  Brine shrimp larval photoresponses involved in diel vertical migration: Activation by fish mucus and modified amino sugars , 1999 .

[6]  Eric B. Keverne,et al.  Something in the Air? New Insights into Mammalian Pheromones , 2004, Current Biology.

[7]  D. Beyers,et al.  Effects of copper on olfaction of colorado pikeminnow , 2001, Environmental toxicology and chemistry.

[8]  T. Colborn,et al.  Chemically-induced alterations in sexual and functional development : the wildlife/human connection , 1992 .

[9]  A. Moore,et al.  Sublethal effects of the pesticide Diazinon on olfactory function in mature male Atlantic salmon parr , 1996 .

[10]  Marcel Dicke,et al.  Pheromone-mediated aggregation in nonsocial arthropods: an evolutionary ecological perspective. , 2005, Annual review of entomology.

[11]  S. Firestein How the olfactory system makes sense of scents , 2001, Nature.

[12]  M. Barry,et al.  Progress toward Understanding the Neurophysiological Basis of Predator‐Induced Morphology in Daphnia pulex , 2002, Physiological and Biochemical Zoology.

[13]  L. Dill,et al.  The scent of death: Chemosensory assessment of predation risk by prey animals , 1998 .

[14]  G. Toth,et al.  Water-borne cues induce chemical defense in a marine alga (Ascophyllum nodosum). , 2000, Proceedings of the National Academy of Sciences of the United States of America.

[15]  G. Cecchine,et al.  Effects of pentachlorophenol on predator avoidance behavior of the rotifer Brachionus calyciflorus , 1998 .

[16]  Kimberley A. M. Hunter,et al.  Morphological responses of Daphnia pulex to Chaoborus americanus kairomone in the presence and absence of metals , 2004, Environmental toxicology and chemistry.

[17]  G. Trussell,et al.  Induced defenses in response to an invading crab predator: an explanation of historical and geographic phenotypic change. , 2000, Proceedings of the National Academy of Sciences of the United States of America.

[18]  D. Rittschof,et al.  Responses of mud snails from low and high imposex sites to sex pheromones. , 2004, Marine pollution bulletin.

[19]  L. Hansson Behavioural response in plants: adjustment in algal recruitment induced by herbivores , 1996, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[20]  G. Pyle,et al.  Effect of copper exposure during embryonic development on chemosensory function of juvenile fathead minnows (Pimephales promelas). , 2005, Ecotoxicology and environmental safety.

[21]  Nathan K. Truelove,et al.  Diazinon disrupts antipredator and homing behaviors in chinook salmon (Oncorhynchus tshawytscha) , 2000 .

[22]  G. Salerno,et al.  Sub-lethal effects of deltamethrin on walking behaviour and response to host kairomone of the egg parasitoid Trissolcus basalis. , 2002, Pest management science.

[23]  C. Propper,et al.  Endosulfan Affects Pheromonal Detection and Glands in the Male Red-Spotted Newt, Notophthalmus viridescens , 2002, Bulletin of environmental contamination and toxicology.

[24]  H. Lefcort,et al.  Antipredatory Behavior as an Index of Heavy-Metal Pollution? A Test Using Snails and Caddisflies , 2000, Archives of environmental contamination and toxicology.

[25]  W. Takken,et al.  Chemical ecology: from gene to ecosystem. , 2006 .

[26]  M. Z. Gliwicz Predation and the evolution of vertical migration in zooplankton , 1986, Nature.

[27]  K. Sloman,et al.  The effects of environmental pollutants on complex fish behaviour: integrating behavioural and physiological indicators of toxicity. , 2004, Aquatic toxicology.

[28]  G. Pyle,et al.  Responses of wild fishes to alarm chemicals in pristine and metal-contaminated lakes , 2004 .

[29]  G. Shepherd,et al.  Mechanisms of olfactory discrimination: converging evidence for common principles across phyla. , 1997, Annual review of neuroscience.

[30]  F. Pompanon,et al.  Inhibition of sex pheromone communications of Trichogramma brassicae (Hymenoptera) by the insecticide chlorpyrifos , 1998 .

[31]  L. D. Smith,et al.  Induced defensive responses by the bivalve Mytilus edulis to predators with different attack modes , 2000 .

[32]  T. Haines,et al.  Mercury effects on predator avoidance behavior of a forage fish, golden shiner (Notemigonus crysoleucas) , 2003, Environmental toxicology and chemistry.

[33]  M. Dicke,et al.  Direct and indirect cues of predation risk influence behavior and reproduction of prey: a case for acarine interactions , 1999 .

[34]  A. Stoka,et al.  Phylogeny and evolution of chemical communication: an endocrine approach. , 1999, Journal of molecular endocrinology.

[35]  Kwang-Hyeon Chang,et al.  Inhibition of development of anti-predator morphology in the small cladoceran Bosmina by an insecticide: impact of an anthropogenic chemical on prey–predator interactions , 2006 .

[36]  M. Lürling Effects of a surfactant (FFD-6) on Scenedesmus morphology and growth under different nutrient conditions. , 2006, Chemosphere.

[37]  R. Tollrian,et al.  The Ecology and Evolution of Inducible Defenses , 1990, The Quarterly Review of Biology.

[38]  Against the flow: chemical detection of downstream predators in running waters , 1998, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[39]  A. Moore,et al.  The effects of a synthetic pyrethroid pesticide on some aspects of reproduction in Atlantic salmon (Salmo salar L.). , 2001, Aquatic toxicology.

[40]  J. Tower,et al.  The effects of reduced pH on chemical alarm signalling in ostariophysan fishes , 2002 .

[41]  L. H. Wilson,et al.  Heavy Metals Alter the Survival, Growth, Metamorphosis, and Antipredatory Behavior of Columbia Spotted Frog (Rana luteiventris) Tadpoles , 1998, Archives of environmental contamination and toxicology.

[42]  C. Wood,et al.  Cadmium disrupts behavioural and physiological responses to alarm substance in juvenile rainbow trout (Oncorhynchus mykiss) , 2003, Journal of Experimental Biology.

[43]  T. Hanazato Anthropogenic chemicals (insecticides) disturb natural organic chemical communication in the plankton community , 1999 .

[44]  D. Azam,et al.  Behavioral effects of waterborne carbofuran in goldfish , 1996, Archives of environmental contamination and toxicology.

[45]  J. Montgomery,et al.  Sensory deficits induced by cadmium in banded kokopu, Galaxias fasciatus, juveniles , 2001, Environmental Biology of Fishes.

[46]  T. Eisner,et al.  Chemical ecology. , 1995, Proceedings of the National Academy of Sciences of the United States of America.

[47]  J. Bruin,et al.  Chemical information transfer between plants: back to the future , 2001 .

[48]  H. Breer,et al.  Olfactory reception in invertebrates. , 1999, Science.

[49]  A. Moore,et al.  Mechanistic Effects of a Triazine Pesticide on Reproductive Endocrine Function in Mature Male Atlantic Salmon (Salmo salarL.) Parr , 1998 .

[50]  L. Weider,et al.  Plasticity of Daphnia life histories in response to chemical cues from predators , 1993 .

[51]  Francesco Bonadonna,et al.  Partner-Specific Odor Recognition in an Antarctic Seabird , 2004, Science.

[52]  Terrier,et al.  Modifications of the sex pheromonal communication of trichogramma brassicae by a sublethal dose of deltamethrin , 1999, Chemosphere.

[53]  P. Fouillet,et al.  Modification, by the Insecticide Chlorpyrifos, of the Behavioral Response to Kairomones of a Parasitoid Wasp, Leptopilina boulardi , 2001, Archives of environmental contamination and toxicology.

[54]  Maurice W. Sabelis,et al.  Infochemical terminology: based on cost-benefit analysis rather than origin of compounds? , 1988 .

[55]  P. Nilsson,et al.  Benefits of a predtor-induced morphology in crucian carp , 1995, Oecologia.

[56]  P. Spaak,et al.  Chemically induced anti-predator defences in plankton: a review , 2004, Hydrobiologia.

[57]  A. Canário,et al.  Possible disruption of pheromonal communication by humic acid in the goldfish, Carassius auratus. , 2002, Aquatic toxicology.

[58]  F. Ollevier,et al.  Phototactic behavior of Daphnia as a tool in the continuous monitoring of water quality: Experiments with a positively phototactic Daphnia magna clone , 1999 .

[59]  M. Barry,et al.  Endosulfan-enhanced crest induction in Daphnia longicephala: evidence for cholinergic innervation of kairomone receptors , 1998 .

[60]  D. Dunham,et al.  Sublethal copper toxicity and food response in the freshwater crayfish Cambarus bartonii (Cambaridae, Decapoda, Crustacea). , 2000, Ecotoxicology and environmental safety.

[61]  M. Lürling Phenotypic plasticity in the green algae Desmodesmus and Scenedesmus with special reference to the induction of defensive morphology , 2003 .

[62]  Andrew Sih,et al.  Predation: direct and indirect impacts on aquatic communities , 1988 .

[63]  C. Propper,et al.  Endosulfan exposure disrupts pheromonal systems in the red-spotted newt: a mechanism for subtle effects of environmental chemicals. , 2001, Environmental health perspectives.

[64]  J. Fox Chemical communication threatened by endocrine-disrupting chemicals. , 2004, Environmental health perspectives.

[65]  J. Kusch Induction of defensive morphological changes in ciliates , 1993, Oecologia.

[66]  P. Fouillet,et al.  Sublethal effects of the insecticide chlorpyrifos on the sex pheromonal communication of Trichogramma brassicae , 1998 .

[67]  T. Colborn,et al.  Pesticide use in the U.S. and policy implications: A focus on herbicides , 1999, Toxicology and industrial health.

[68]  P. Saglio,et al.  Behavioral Responses to Atrazine and Diuron in Goldfish , 1998, Archives of environmental contamination and toxicology.

[69]  Ko Yasumoto,et al.  Aliphatic sulfates released from Daphnia induce morphological defense of phytoplankton: isolation and synthesis of kairomones , 2005 .

[70]  S. File,et al.  Behavioural and neurochemical responses of male and female chicks to cat odour , 1996, Pharmacology Biochemistry and Behavior.