An aquarium experiment for identifying the physical factors inducing morphological change in two massive scleractinian corals

Todd, Peter A.; Sidle, Roy C.; Lewin-Koh, N. J. I.

doi:10.1016/j.jembe.2003.09.005

Cited by 39 publications

(29 citation statements)

References 33 publications

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“…Recent research has established relationships between coral skeletal characters, temperature data and climatic changes (Morri et al 2001), biogeography and speciation (Carlon & Budd 2002), and biological and environmental controls (Cruz-Piñón et al 2003, Todd et al 2004b). On the other hand, recent molecular analysis have challenged many traditional notions concerning the systematics and evolution of scleractinian corals (Chen et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Skeletal variability of the coral Favia gravida (Verrill, 1868) from Brazil

Amaral

Ramos

2007

Biota Neotrop.

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The skeletal variability of the coral Favia gravida, a species endemic to Brazil, was quantitatively described including populations from three locations: Tamandaré (state of Pernambuco), Abrolhos (state of Bahia), and Santa Cruz (state of Espírito Santo). Ten colonies were collected from each population and fourteen morphological characters were measured from ten corallites per colony. The results of univariate (among 14 skeletal characters, 7 showed p < 0.05) analysis provide evidence to suggest that F. gravida has considerable morphological plasticity, which may explain its ability to adapt to different ecological conditions. The species also displays polymorphism within and between colonies of each population. Intercolony variation within populations was relevant for most of the variables measured. Canonical discriminant analysis (r = 0.8648) showed that the population farthest offshore (Abrolhos) was distinct from the other two (Tamandaré and Santa Cruz), which have been affected by terrigenous sediments carried from the coast. Specimens from Santa Cruz displayed the highest degree of meandrinization.Keywords A variação do esqueleto do coral Favia gravida, uma espécie endêmica do Brasil, foi descrita quantativamente a partir de populações de três localidades, incluindo Tamandaré (Estado de Pernambuco), Abrolhos (Estado da Bahia) e Santa Cruz (Estado do Espírito Santo). Dez colônias foram coletadas de cada população e quatorze caracteres morfológicos foram medidos de dez coralitos por colônia. Os resultados da análise univariada (dentre os 14 caracteres esqueléticos, sete apresentaram p < 0,05) fornecem evidências que sugerem que F. gravida tem uma plasticidade morfológica considerável, o que pode explicar sua habilidade para se adaptar às condições ecológicas diferentes. A espécie demonstra, também, polimorfismo dentro e entre as colônias de cada população. A variação intercolonial dentro de populações foi, também, marcante para a maioria das variáveis medidas. A análise discriminante canônica (r = 0,8648) mostrou que a população mais distante da costa (Abrolhos) foi distinta das outras duas (Tamandaré e Santa Cruz), as quais estão sendo afetadas por sedimentos terrígenos provenientes da costa. Os espécimes de Santa Cruz demonstraram o mais alto grau de meandrinização.Palavras-chave: variação morfológica, caracteres esqueléticos, Favia.

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Section: Introductionmentioning

confidence: 99%

Skeletal variability of the coral Favia gravida (Verrill, 1868) from Brazil

Amaral

Ramos

2007

Biota Neotrop.

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“…While most of these changes take longer than a day, some, such as polyp expansion and contraction, occur within minutes (Levy et al, 2003). Changes in the density of the zooxanthellae and reshuffling of their species occur within days, whereas changes in growth form of the coral colony may take several months to years (Graus and Macintyre, 1982;Miller, 1994;Todd et al, 2004), and genetic selection takes thousands of years (Falkowski et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

Diel `tuning' of coral metabolism: physiological responses to light cues

Levy

Achituv

Yacobi

et al. 2006

Journal of Experimental Biology

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“…Combined biotic and environmental stressors can modify coral morphologies from the smallest of scales at the corallite level to the entire shape of a coral colony (Todd et al, 2004;Erftemeijer et al, 2012). Light and water movement have been the most studied of the parameters that lead to flattened growth forms (Todd, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Light and water movement have been the most studied of the parameters that lead to flattened growth forms (Todd, 2008). Light can also prompt changes to corallite direction and growth (Todd et al, 2004). Other factors that influence morphology include food availability, water movement, sedimentation, temperature, salinity (Bruno and Edmunds, 1997) and depth (Klaus et al, 2007).…”

Section: Introductionmentioning

confidence: 99%