Optimal temperature for growth and condition of an endemic subtropical anemonefish

Rushworth, K. J. W.; Smith, Stephen; Cowden, Kenneth Lawrence

doi:10.1016/j.aquaculture.2011.06.004

Cited by 16 publications

(12 citation statements)

References 11 publications

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“…With increasing temperature, decreasing alkalinity, and increased wind and wave frequency in the future (Young et al ., ), environmental thresholds for subtropical species may be exceeded. For example, the upper temperature threshold for growth of the Australian subtropical endemic anemone fish Amphiprion latezonatus Waite, 1900 has been estimated at 28 °C (Rushworth et al ., ), and Australian subtropical white syndrome, a disease affecting a range of coral species, increases in prevalence at temperatures ≥26 °C (Dalton et al ., ). Increasing water temperatures alter the timing of processes influencing recruitment (e.g.…”

Section: Climate Change Effects On Processes Shaping Subtropical Reefsmentioning

confidence: 99%

Conserving potential coral reef refuges at high latitudes

Beger

Sommer

Harrison

et al. 2013

Diversity and Distributions

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170

149

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Aim High-latitude coral reef communities composed of tropical, subtropical and temperate species are heralded as climate change refuges for vulnerable tropical coral reef species, giving them high, but as yet unrealized, conservation priority. We review the ecology of subtropical reefs in the context of climate change and evaluate management strategies ensuring both their own continuity and their potential to act as refuges for tropical species.Location Global high-latitude coral reef environments.Methods We review the literature about refuges management, high-latitude reefs, climate change effects on reef organisms and the conservation of reefs.Results High-latitude coral reef systems are functionally different from their tropical counterparts, characterized by unique biogeographical overlap of taxa at their range margins, endemic species and strong seasonality in species composition. They are shaped by marginal environmental conditions, which are predicted to undergo greater changes than reefs at lower latitudes, resulting in community re-assembly through range shifts, altered dispersal patterns, survivorship and habitat loss. The combined impact of these changes, however, is difficult to assess, as some effects may be antagonistic. Climate change conservation options include passive management strategies such as no-take reserves that aim to minimize local disturbances, and active strategies such as relocating populations to refuge sites. Success of active intervention relies on the long-term persistence of relocated populations, which is unlikely for highlatitude populations once source tropical populations at lower latitudes are locally extinct.Main conclusion High-latitude reefs are poised for rapid modification under climate change. Management should anticipate these changes by setting up no-take reserves on suitable subtropical reefs now to foster ecosystem resilience through reduced anthropogenic impacts. Given the uncertainty over which species will arrive or depart and lack of knowledge about the history of most subtropical reef development, active management is presently not the best use of management resources.

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Section: Climate Change Effects On Processes Shaping Subtropical Reefsmentioning

confidence: 99%

Conserving potential coral reef refuges at high latitudes

Beger

Sommer

Harrison

et al. 2013

Diversity and Distributions

Self Cite

170

149

View full text Add to dashboard Cite

show abstract

“…For rearing ornamental fish, the optimum temperature should be established as one of the most important environmental parameters for teleost fish growth, because it would allow us to examine the effect on growth of other variables, such as stocking density and nutritional requirements (Rushworth et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Thermal preference, tolerance, and thermal aerobic scope in clownfish Amphiprion ocellaris (Cuvier, 1830) predict its aquaculture potential across tropical regions

Velasco-Blanco

Dı́az

et al. 2019

Int Aquat Res

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The clownfish Amphiprion ocellaris is widely distributed in the coral reef ecosystems of tropical and subtropical regions of the West Indo Pacific, an area that hosts economically valuable species, and, thus, a suitable candidate for warm water aquaculture. This study determined the preferred temperature, critical threshold limits, represented by critical thermal maximum and critical thermal minimum, thermal window width, and aerobic metabolic scope of A. ocellaris clownfish acclimated to 20, 23, 26, 29, 32, and 35°C. A positive response (P \ 0.05) occurred when the preferred temperature significantly increased with increasing acclimation temperature. The preferred temperature obtained graphically was 30.0°C. Acclimation temperature significantly affected the thermal tolerance which increased with acclimation temperature. The thermal window calculated for A. ocellaris was 301.5°C 2 . The thermal metabolic scope obtained in animals acclimated at the interval from 23 to 32°C (P [ 0.05) had a mean value of 4240.8 mg O 2 h -1 kg -1 w.w., revealing that A. ocellaris is a eurythermal species with a range of optimal physiological performance that closely matches the environmental conditions where it can be farmed. Therefore, the highest value of the thermal aerobic scopes corresponded to the intervals of the preferred temperature obtained for A. ocellaris. These results may partially explain their worldwide distribution pattern, as well as their aquaculture potential in tropical regions.

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“…For coral reef fishes, rising ocean temperatures may not be immediately lethal (Mora & Ospína, 2001), but could have significant impacts on individual performance that will ultimately affect population demography and biogeographic distributions (Munday et al , 2008b, Nilsson et al , 2009). For example, an increase in average temperature of 2–3°C significantly compromises growth and reproduction of some species (Munday et al , 2008a, Donelson et al , 2010, Pankhurst & Munday, 2011, Rushworth et al , 2011, Zarco-Perelló et al , 2012). The mechanistic explanation for the effects on individual performance may be related to how temperature influences O 2 uptake, transport, and delivery, also known as oxygen- and capacity-limited thermal tolerance (OCLTT) (Pörtner, 2001, Pörtner & Knust, 2007, Pörtner and Farrell, 2008, Eliason et al , 2011).…”

Section: Introductionmentioning

confidence: 99%

Life on the edge: thermal optima for aerobic scope of equatorial reef fishes are close to current day temperatures

Rummer

Couturier

Stecyk

et al. 2013

Global Change Biology

210

209

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Equatorial populations of marine species are predicted to be most impacted by global warming because they could be adapted to a narrow range of temperatures in their local environment. We investigated the thermal range at which aerobic metabolic performance is optimum in equatorial populations of coral reef fish in northern Papua New Guinea. Four species of damsel fishes and two species of cardinal fishes were held for 14d at 29, 31, 33, and 34°C, which incorporated their existing thermal range (29–31°C) as well as projected increases in ocean surface temperatures of up to 3°C by the end of this century. Resting and maximum oxygen consumption rates were measured for each species at each temperature and used to calculate the thermal reaction norm of aerobic scope. Our results indicate that one of the six species, Chromisatripectoralis, is already living above its thermal optimum of 29°C. The other five species appeared to be living close to their thermal optima (approximately 31°C). Aerobic scope was significantly reduced in all species, and approached zero for two species at 3°C above current-day temperatures. One species was unable to survive even short-term exposure to 34°C. Our results indicate that low-latitude reef fish populations are living close to their thermal optima and may be more sensitive to ocean warming than higher-latitude populations. Even relatively small temperature increases (2–3°C) could result in population declines and potentially redistribution of equatorial species to higher latitudes if adaptation cannot keep pace.

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Optimal temperature for growth and condition of an endemic subtropical anemonefish

Cited by 16 publications

References 11 publications

Conserving potential coral reef refuges at high latitudes

Conserving potential coral reef refuges at high latitudes

Thermal preference, tolerance, and thermal aerobic scope in clownfish Amphiprion ocellaris (Cuvier, 1830) predict its aquaculture potential across tropical regions

Life on the edge: thermal optima for aerobic scope of equatorial reef fishes are close to current day temperatures

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