Acclimation to predicted ocean warming through developmental plasticity in a tropical reef fish

Global Change Biology, Journal Year: 2010, Volume and Issue: 17(4), P. 1712 - 1719

Published: Sept. 28, 2010

Determining the capacity of organisms to acclimate and adapt increased temperatures is key understand how populations communities will respond global warming. Although there evidence that elevated water temperature affects metabolism, growth condition tropical marine fish, it unknown whether they have potential acclimate, given adequate time. We reared reef fish Acanthochromis polyacanthus through its entire life cycle at present day (+1.5 and+3.0 °C) test ability thermally ocean predicted occur over next 50–100 years. Fish 3.0 °C greater than average reduced their resting oxygen consumption (RMR) during summer compared with tested temperature. The reduction in RMR up 69 mg O2 kg−1 h−1 acclimated could represent a significant benefit daily energy expenditure. In contrast, was no acclimation exhibited by 1.5 above temperatures. +3.0 were smaller poorer temperatures, suggesting even be consequences for future fishes caused

Language: Английский

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Effects of geography and life history traits on genetic differentiation in benthic marine fishes

Ecography, Journal Year: 2011, Volume and Issue: 34(4), P. 566 - 575

Published: Jan. 19, 2011

Dispersal of planktonic larvae can create connections between geographically separated adult populations benthic marine animals. How geographic context and life history traits affect these is largely unresolved. We use data from genetic studies (species level FST) teleost fishes combined with linear models to evaluate the importance transitions biogeographic regions, distance, egg type (benthic or pelagic eggs), larval duration (PLD), marker as factors affecting differentiation within species. find that regions are significant consistent contributors population structure, whereas PLD does not significantly explain structure. Total study distance frequently contributes interaction terms, particularly in association markers, whereby FST increases for employing mtDNA sequences, but allozyme microsatellite show no increase distance. These results highlight spatial (biogeography distance) imply there inherent differences dispersal ability associated type. also over which maximum pairwise occurs (relative total highly variable be observed at any scale. This result stochastic processes inflating and/or insufficient consideration biological relevant connectivity.

Language: Английский

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Management under uncertainty: guide-lines for incorporating connectivity into the protection of coral reefs

Coral Reefs, Journal Year: 2009, Volume and Issue: 28(2), P. 353 - 366

Published: Feb. 12, 2009

Language: Английский

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Impact of global warming and rising CO2 levels on coral reef fishes: what hope for the future?

Journal of Experimental Biology, Journal Year: 2012, Volume and Issue: 215(22), P. 3865 - 3873

Published: Oct. 24, 2012

Summary Average sea-surface temperature and the amount of CO2 dissolved in ocean are rising as a result increasing concentrations atmospheric CO2. Many coral reef fishes appear to be living close their thermal optimum, for some them, even relatively moderate increases (2–4°C) lead significant reductions aerobic scope. Reduced capacity could affect population sustainability because less energy can devoted feeding reproduction. Coral seem have limited acclimate elevated adults, but recent research shows that developmental transgenerational plasticity occur, which might enable species adjust temperatures. Predicted PCO2, associated acidification, also influence scope fishes, although there is considerable interspecific variation, with exhibiting decline others an increase at near-future levels. As effects, changes response mitigate impacts high on growth survival fishes. An unexpected discovery has dramatic effect wide range behaviours sensory responses consequences timing settlement, habitat selection, predator avoidance individual fitness. The underlying physiological mechanism appears interference acid–base regulatory processes brain neurotransmitter function. Differences sensitivity populations global warming been identified will fish community structure oceans warm becomes more acidic; however, prospect acclimation adaptation these threats needs considered. Ultimately, it environmental change over coming decades determine impact climate marine ecosystems.

Language: Английский

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Latitudinal shifts in coral reef fishes: why some species do and others do not shift

Fish and Fisheries, Journal Year: 2013, Volume and Issue: 15(4), P. 593 - 615

Published: April 26, 2013

Abstract Climate change is resulting in rapid poleward shifts the geographical distribution of many tropical fish species, but it equally apparent that some fishes are failing to exhibit expected their distribution. There still little understanding species‐specific traits may constrain or promote successful establishment populations temperate regions. We review factors likely affect population establishment, including larval supply, settlement and post‐settlement processes. In addition, we conduct meta‐analyses on existing new data examine relationships between vagrancy. show vagrant species more originate from high‐latitude populations, while at demographic level, with large body size, high swimming ability, size pelagic spawning behaviour into habitats. also both habitat food limitation within juvenile stages communities those medium low reliance coral resources.

Language: Английский

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