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Evolutionary and immediate effects of crude-oil pollution: depression of exploratory behaviour across populations of Trinidadian guppies

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Evolutionary and immediate effects of crude-oil pollution: depression of exploratory behaviour across populations of Trinidadian guppies

Content Provider	Springer Nature Link
Author	Jacquin, L. Dybwad, C. Rolshausen, G. Hendry, A. P. Reader, S. M.
Copyright Year	2016
Abstract	Human-induced perturbations such as crude-oil pollution can pose serious threats to aquatic ecosystems. To understand these threats fully it is important to establish both the immediate and evolutionary effects of pollutants on behaviour and cognition. Addressing such questions requires comparative and experimental study of populations that have evolved under different levels of pollution. Here, we compared the exploratory, activity and social behaviour of four populations of Trinidadian guppies (Poecilia reticulata) raised in common garden conditions for up to three generations. Two of these populations originated from tributaries with a long history of human-induced chronic crude-oil pollution with polycyclic aromatic hydrocarbons due to oil exploitation in Trinidad, the two others originating from non-polluted control sites. Laboratory-raised guppies from the oil-polluted sites were less exploratory in an experimental maze than guppies from the non-polluted sites and in a similar manner for the two independent rivers. We then compared the plastic behavioural responses of the different populations after an acute short-term experimental exposure to crude oil and found a decrease in exploration (but not in activity or shoaling) in the oil-exposed fish compared to the control subjects over all four populations. Taken together, these results suggest that both an evolutionary history with oil and an acute exposure to oil depressed guppy exploratory behaviour. We discuss whether the behavioural divergence observed represents adaptation to human-induced pollutants, the implications for conservation and the possible knock-on effects for information discovery and population persistence in fish groups.
Starting Page	97
Ending Page	108
Page Count	12
File Format	PDF
ISSN	14359448
Journal	Animal Cognition
Volume Number	20
Issue Number	1
e-ISSN	14359456
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-08-25
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Teleost fish Organic pollutants PAH Trinidadian guppy Behavioural evolution Exploration Activity Grouping Information discovery Behavioral Sciences Zoology Psychology Research
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Ecology, Evolution, Behavior and Systematics

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Light environment and mating behavior in Trinidadian guppies (Poecilia reticulata)

Data from: Forebrain activation during social exposure in wild-type guppies (Dataset)

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Evolutionary and immediate effects of crude-oil pollution: depression of exploratory behaviour across populations of Trinidadian guppies

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Evolutionary and immediate effects of crude-oil pollution: depression of exploratory behaviour across populations of Trinidadian guppies