Latitudinal symbiont zonation in Stylophora pistillata from southeast Africa

Macdonald, Angus H. H.; Sampayo, Eugenia M.; Ridgway, Tyrone; Schleyer, Michael H.

doi:10.1007/s00227-008-0915-1

Cited by 33 publications

(28 citation statements)

References 40 publications

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“…Rodriguez-Lanetty et al 2001, Savage et al 2002, Macdonald et al 2008, Thornhill et al 2008) and in isolated locations (e.g. LaJeunesse et al 2004a) and studies done on the host species sampled in the present study throughout the Indo-Pacific (e.g.…”

Section: Biogeographic and Environmental Patterns Inmentioning

confidence: 61%

“…Surveys of coral-algal symbioses from Western Australia can also be compared with similar latitudinal comparisons from other geographic regions (e.g. Baker 1999, Rodriguez-Lanetty et al 2001, van Oppen et al 2001, 2005, Savage et al 2002, Macdonald et al 2008, LaJeunesse et al 2010a) to corroborate hypothesized biogeographic patterns in the distribution of Symbiodinium diversity, and to determine where exceptions to these patterns arise, and why.…”

Section: Introductionmentioning

confidence: 99%

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Novel algal symbiont (Symbiodinium spp.) diversity in reef corals of Western Australia

Silverstein

Correa

LaJeunesse³

et al. 2011

Mar. Ecol. Prog. Ser.

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The identity and diversity of algal symbionts (Symbiodinium spp.) in reef corals is thought to influence to the resilience of reef ecosystems to climate change, and varies depending on coral species, environmental conditions, and biogeography. We examined these factors by surveying corals along a latitudinal gradient in Western Australia on reefs connected north to south by the warm-water Leeuwin Current. We used the internal transcribed spacer-2 (ITS-2) region of ribosomal DNA to characterize Symbiodinium communities in 19 species of reef coral (in 16 genera) from tropical Dampier (20.5°S) to temperate Dunsborough (33.5°S). We documented a high number of novel ITS-2 types in Symbiodinium clades B (1 type) and C (14 types) as well as 7 previously reported ITS-2 types in clades B, C, and D. In addition, we compared symbiont distributions with Giovanni's OBIG MODIS-Aqua satellite temperature data set and found that the putatively thermotolerant Symbiodinium ITS-2 type D1a was more frequently detected in 'chronically warm' tropical sites than at 'chronically cool' temperate sites, while clade B symbiont types showed the reverse pattern, being found in certain corals at the southernmost sites. Symbiodinium type D1a was generally most abundant at Dampier, where bleaching had occurred 1 mo prior to sampling, although some variation by host taxa was observed. The diverse and novel Symbiodinium communities documented here may be a result of (1) the variable environmental histories of the study sites, (2) the apparent genetic divergence within this genus resulting from the relative isolation of Western Australian reefs, and/or (3) the frequent transport of symbionts (in hospite or free-living) from Indo-Malay reefs to Western Australia via the Leeuwin Current. These results indicate that understudied reefs in remote and isolated areas may contain Symbiodinium diversity that has not been reported previously.

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Section: Biogeographic and Environmental Patterns Inmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Novel algal symbiont (Symbiodinium spp.) diversity in reef corals of Western Australia

Silverstein

Correa

LaJeunesse³

et al. 2011

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…Water temperatures were also monitored across a period of strong oceanographic disturbances (El Niño and Indian Ocean Dipoles) that caused episodic warming, coral bleaching and eventual mortality (Nakamura et al 2009;Ateweberhan & McClanahan 2010). Most studies of symbionts in the western Indian Ocean region have found a high dominance of clade C Symbiodinium (LaJeunesse et al 2010), particularly in the cooler southwestern Indian Ocean region (MacDonald et al 2008;Ruiz Sebastian et al 2009), similar to the dominance of clade C found in the wider Indo-Pacific (LaJeunesse et al 2004). However, clade D Symbiodinium types can frequently be found in higher abundance in some regions, such as the Arabian Gulf and Andaman Sea LaJeunesse et al 2010), in various local sites experiencing stress (Baker et al , 2013Fabricius et al 2004;Oliver & Palumbi 2009, and can increase in dominance in some coral taxa after temperature disturbances (Jones et al 2008).…”

Section: Introductionmentioning

confidence: 96%

“…), particularly in the cooler southwestern Indian Ocean region (MacDonald et al . ; Ruiz Sebastian et al . ), similar to the dominance of clade C found in the wider Indo‐Pacific (LaJeunesse et al .…”

Section: Introductionmentioning

confidence: 99%

Decadal changes in common reef coral populations and their associations with algal symbionts (Symbiodinium spp.)

2014

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Decadal populations changes in four coral taxa and their patterns of association with algal symbionts (Symbiodinium spp. – 10 years of sampling) were examined on Kenyan back reefs over a period of climatic disturbances (1991−2009). Some of the better surviving taxa, Pavona and Pocillopora, were associated with variable temperature regimes and >50% of sampled colonies in these taxa had some of the more thermally tolerant Symbiodinium in clade D. In contrast, only around 35% of Acropora and no branching forms of Porites contained detectable levels of clade D, and both taxa experienced high levels of thermally‐induced mortality and poor recovery. Overall, however the relationship between Symbiodinium clade and population‐level success of coral hosts was not strong, and differential success inside and outside fisheries closures suggests that other factors, such as predation on corals, were also influential. Consequently, while Symbiodinium in clade D may contribute to the success of coral hosts across thermal disturbances, multiple ecological factors and additional biological traits also influence their long‐term survival.

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“…The distribution of some Symbiodinium variants has been correlated with different environmental conditions, usually temperature or light [2,[12][13][14][15][16][17][18][19][20], for physiology studies (see earlier studies [21][22][23][24]). Physiological variability among Symbiodinium variants likely contributes to the ability of a coral host to thrive in a variety of environmental conditions, such as gradients in depth, latitude, irradiance and temperature [20,[25][26][27][28]. Symbiodinium clade D has attracted particular interest in this regard because it includes opportunistic variants (e.g.…”

Section: Introductionmentioning

confidence: 99%

Specificity is rarely absolute in coral–algal symbiosis: implications for coral response to climate change

2012

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Some reef-building corals have been shown to respond to environmental change by shifting the composition of their algal symbiont (genus Symbiodinium) communities. These shifts have been proposed as a potential mechanism by which corals might survive climate stressors, such as increased temperatures. Conventional molecular methods suggest this adaptive capacity may not be widespread because few ($25%) coral species have been found to associate with multiple Symbiodinium clades. However, these methods can fail to detect low abundance symbionts (typically less than 10-20% of the total algal symbiont community). To determine whether additional Symbiodinium clades are present, but are not detected using conventional techniques, we applied a high-resolution, real-time PCR assay to survey Symbiodinium (in clades A-D) from 39 species of phylogenetically and geographically diverse scleractinian corals. This survey included 26 coral species thought to be restricted to hosting a single Symbiodinium clade ('symbiotic specialists'). We detected at least two Symbiodinium clades (C and D) in at least one sample of all 39 coral species tested; all four Symbiodinium clades were detected in over half (54%) of the 26 symbiotic specialist coral species. Furthermore, on average, 68 per cent of all sampled colonies within a given coral species hosted two or more symbiont clades. We conclude that the ability to associate with multiple symbiont clades is common in scleractinian (stony) corals, and that, in coral-algal symbiosis, 'specificity' and 'flexibility' are relative terms: specificity is rarely absolute. The potential for reef corals to adapt or acclimatize to environmental change via symbiont community shifts may therefore be more phylogenetically widespread than has previously been assumed.

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Latitudinal symbiont zonation in Stylophora pistillata from southeast Africa

Cited by 33 publications

References 40 publications

Novel algal symbiont (Symbiodinium spp.) diversity in reef corals of Western Australia

Novel algal symbiont (Symbiodinium spp.) diversity in reef corals of Western Australia

Decadal changes in common reef coral populations and their associations with algal symbionts (Symbiodinium spp.)

Specificity is rarely absolute in coral–algal symbiosis: implications for coral response to climate change

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