Elevated temperature reduces survivorship and settlement of the larvae of the Caribbean scleractinian coral, Favia fragum (Esper)

Randall, Carly J.; Szmant, Alina M.

doi:10.1007/s00338-009-0482-z

Cited by 117 publications

(92 citation statements)

References 29 publications

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“…The pronounced declines in successful settlement at constant 31 • C were consistent with previous findings that reported the effects of thermal stress (> 30 • C) on coral larval settlement (Randall and Szmant, 2009;Humanes et al, 2016). Interestingly, transient exposure to 33 • C in variable conditions did not produce the same negative effect on larval settlement as constant exposure to 31 • C; on the contrary, coral larvae experiencing diurnal shifts between 30 and 33 • C set- tled at a similar rate to those in the control.…”

Section: Larval Settlement Under Elevated and Fluctuating Temperaturessupporting

confidence: 91%

“…Interestingly, transient exposure to 33 • C in variable conditions did not produce the same negative effect on larval settlement as constant exposure to 31 • C; on the contrary, coral larvae experiencing diurnal shifts between 30 and 33 • C set- tled at a similar rate to those in the control. During daytime exposure to elevated and stressful temperatures, coral larvae may not initiate metamorphosis and settlement because larvae undergoing this complex stage are particularly susceptible to thermal perturbations (Randall and Szmant, 2009), but settlement may proceed as temperature descends to a more tolerable level at night (30 • C in this study). It is likely that the fluctuating temperature conditions could provide some respite for coral larvae, thereby favoring settlement at elevated and fluctuating temperature conditions.…”

Section: Larval Settlement Under Elevated and Fluctuating Temperaturesmentioning

confidence: 92%

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Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral <i>Pocillopora damicornis</i>

et al. 2017

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Abstract. Diurnal fluctuations in seawater temperature are ubiquitous on tropical reef flats. However, the effects of such dynamic temperature variations on the early stages of corals are poorly understood. In this study, we investigated the responses of larvae and new recruits of Pocillopora damicornis to two constant temperature treatments (29 and 31 • C) and two diurnally fluctuating treatments (28-31 and 30-33 • C with daily means of 29 and 31 • C, respectively) simulating the 3 • C diel oscillations at 3 m depth on the Luhuitou fringing reef (Sanya, China). Results showed that the thermal stress on settlement at 31 • C was almost negated by the fluctuating treatment. Further, neither elevated temperature nor temperature fluctuations caused bleaching responses in recruits, while the maximum excitation pressure over photosystem II (PSII) was reduced under fluctuating temperatures. Although early growth and development were highly stimulated at 31 • C, oscillations of 3 • C had little effects on budding and lateral growth at either mean temperature. Nevertheless, daytime encounters with the maximum temperature of 33 • C in fluctuating 31 • C elicited a notable reduction in calcification compared to constant 31 • C. These results underscore the complexity of the effects caused by diel temperature fluctuations on early stages of corals and suggest that ecologically relevant temperature variability could buffer warming stress on larval settlement and dampen the positive effects of increased temperatures on coral growth.

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Section: Larval Settlement Under Elevated and Fluctuating Temperaturessupporting

confidence: 91%

Section: Larval Settlement Under Elevated and Fluctuating Temperaturesmentioning

confidence: 92%

Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral <i>Pocillopora damicornis</i>

et al. 2017

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“…An increasing number of studies focuses on the effects of elevated temperatures on the early life stages of scleractinian corals. These studies refer to altered developmental or metamorphosis rates, reduced respiration, abnormal morphologies, reduced pre-competency periods, decreased settlement and changes in settlement behaviour, and reduced fitness and survivorship (Brooke & Young 2005, Putnam et al 2008, Randall & Szmant 2009a and references therein, Heyward & Negri 2010, Edmunds et al 2011). More recently, several studies have used gene expression approa ches to detect responses at a molecular level of both coral embryos and larvae subjected to elevated temperatures (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effects of thermal stress on early developmental stages of a gorgonian coral

Kipson¹,

Linares²,

Teixidó³

et al. 2012

Mar. Ecol. Prog. Ser.

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Ongoing sea temperature increase threatens reefs worldwide. In this study we experimentally examined for the first time the response of the early life stages of a long-lived structural gorgonian, the Mediterranean species Paramuricea clavata (Risso 1826), to the highest summer temperature recorded so far in the study area (25°C; the Medes Islands, Northwestern Mediterranean). This temperature also simulates the end-of-century predicted warming (+ 3°C) over the temperature maxima recorded during the species' reproductive period. The results showed a severe negative impact of constant thermal stress on the viability of P. clavata embryos and larvae, resulting in reduced survivorship, completely abnormal embryonic development and impaired metamorphosis. The deteriorating effect was rapid for embryos (after 7 h), whereas the impact on larvae became evident after 10 d of stress. Larval modifications started 7 d earlier under elevated temperature conditions, but the appearance of spherical, aberrant shapes prevented an assessment of whether metamorphosis was initiated but abnormal, or deterred altogether. The apparent higher sensitivity of embryos suggests that thermal stress during embryonic development may be the most critical factor for the viability of P. clavata larvae. In the context of an ongoing warming trend, the reduced viability of early life stages would jeopardize the persistence of P. clavata, which relies on successful recruitment for replenishment of its populations. Further research into the effects of thermal stress on the reproduction of structural invertebrate species and the viability of their early life stages will improve our understanding of the long-term consequences of environmental global change in marine benthic communities.KEY WORDS: Temperature stress · Octocoral · Embryogenesis · Larval development · Mediterranean Sea · Global warming Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 470: [69][70][71][72][73][74][75][76][77][78] 2012 elevated temperature on tropical or subtropical scleractinian corals, while data on octocorals and temperate corals are lacking (but see Zeevi-Ben-Yosef & Benayahu 2008).The Mediterranean region is considered to be among the main climate change hotspots (Giorgi 2006), where several mass mortality events of invertebrates, caused by positive seawater temperature anomalies, were recently observed ). During the 2 largest mass mortality events recorded to date (in 1999 and 2003), both in terms of the range of species affected (~30 species from 5 phyla) and the geographic extent (~1000 km of coastline), temperatures reached ~3 to 4°C above average (Cerrano et al. 2000, Crisci et al. 2011. These large events were accompanied by several others, affecting fewer species or being more localized, e.g. in summers of (Bensoussan et al. 2010, Maldonado et al. 2010, Cebrian et al. 2011, Huete-Stauffer et al. 2011, Stabili et al. 2012. In general, gorgonians, which are structurally important elements of Mediterranean...

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“…Additionally, they emphasize how little is known about the interactions between corals and their environment that place their populations on the gradient between open and closed (Cowen & Sponaugle 2009, Jones et al 2009). Many of the least known factors affecting coral recruitment involve biophysical coupling, such as the ways in which physical conditions affect coral reproduction (van Woesik et al 2006, Albright et al 2008, Randall & Szmant 2009, van Woesik 2010 and the relationship between larval supply and local recruitment. Aspects of these relationships are coming to light, for example the effects of high temperatures in preventing gametogenesis (Szmant & Gassman 1990) and affecting fertilization (Negri et al 2007), the effects of subtle rises in temperature in accelerating reproductive phenology (TY Fan pers.…”

Section: Introductionmentioning

confidence: 99%

Landscape-scale variation in coral recruitment in Moorea, French Polynesia

Edmunds¹,

Leichter²,

Adjeroud³

2010

Mar. Ecol. Prog. Ser.

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In this study, we describe spatio-temporal variation in coral recruitment in the back reef of Moorea, French Polynesia, and explore the extent to which it is associated with community structure, seawater temperature, and wave regimes. Recruitment was assessed with settlement tiles deployed at 10 sites on the north, southeast, and southwest shores and sampled every 5 to 7 mo from 2005 to 2007. Temperature and waves were measured using thermistors and pressure sensors, and community structure was assessed using in situ surveys. Mean recruitment varied from 0 to 6 recruits tile -1 (510 cm 2 ) and was generally greater in the second compared to the first year of the study. Recruitment varied among sites, and this variation was similar between years but differed among sampling periods: acroporids were common on the southwest shore between January and September, but rare from September to January; poritids were common on the north shore between September and January, but rare on the southwest shore from January to September; and pocilloporids were found all year, but at slightly elevated densities between January and September. The mean daily seawater temperature, and the daily range, varied among sites, but neither was closely related to coral recruitment, and both were of biologically small magnitudes. The coral community structure also varied among sites, but likewise, was not associated with coral recruitment. In contrast, outer reef wave energy exposure, which likely played an important role in driving cross-reef transport of seawater into the lagoon, differed between shores and seasons in a pattern consistent with the variation in coral recruitment in the back reef. We hypothesize that coral recruitment in the back reef of Moorea is influenced by the interaction of seasonal variation in wave exposure, family-level differences in coral reproductive timing, and the spatial distribution of adult corals.

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Elevated temperature reduces survivorship and settlement of the larvae of the Caribbean scleractinian coral, Favia fragum (Esper)

Cited by 117 publications

References 29 publications

Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral <i>Pocillopora damicornis</i>

Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral <i>Pocillopora damicornis</i>

Effects of thermal stress on early developmental stages of a gorgonian coral

Landscape-scale variation in coral recruitment in Moorea, French Polynesia

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Elevated temperature reduces survivorship and settlement of the larvae of the Caribbean scleractinian coral, Favia fragum (Esper)

Cited by 117 publications

References 29 publications

Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral &lt;i&gt;Pocillopora damicornis&lt;/i&gt;

Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral &lt;i&gt;Pocillopora damicornis&lt;/i&gt;

Effects of thermal stress on early developmental stages of a gorgonian coral

Landscape-scale variation in coral recruitment in Moorea, French Polynesia

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Product

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Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral <i>Pocillopora damicornis</i>

Impact of diurnal temperature fluctuations on larval settlement and growth of the reef coral <i>Pocillopora damicornis</i>