Genetic diversity loss associated to high mortality and environmental stress during the recruitment stage of a coral reef fish

Pini, Jennifer; Planes, Serge; Rochel, Elisabeth; Lecchini, David; Fauvelot, Cécile

doi:10.1007/s00338-011-0718-6

Cited by 14 publications

(13 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While it is surprising that a short period of mortality caused genetic shifts that were detectable at a relatively small number of loci, this finding is by no means unique. Similar approaches have yielded comparable results in a range of fishes (Jones & Barber, 2005;Pini et al, 2011;Planes & Romans, 2004;Vigliola et al, 2007), mollusks (LeBlanc, Tremblay, Davidson, Landry, & McNiven, 2008), and plants (Prittinen et al, 2006). The fact that shifts were detected in a short, three-day window suggests that mortality over the entire early life period has the potential to exert substantial leverage on the composition of older life stages.…”

Section: Discussionmentioning

confidence: 89%

“…The large reduction in heterozygosity at Da494 suggests that this locus lies in a genomic region that experiences directional selection after settlement. Previous studies have generally found increases in heterozygosity through early life, attributed to superior viability of heterozygotes or “overdominance” (LeBlanc et al, ; Pini et al, ). Examples of decreases, like those observed in the current study, also exist (Planes & Romans, ).…”

Section: Discussionmentioning

confidence: 98%

“…We tested how postsettlement mortality influenced subsequent growth of D. aruanus at Moorea, French Polynesia (17°30′S, 149°50′W). D. aruanus has been used extensively as a model to understand settlement and recruitment processes (Forrester, 1990;Jones, 1997;Pini, Planes, Rochel, Lecchini, & Fauvelot, 2011;Schmitt & Holbrook, 1999b). It hatches from benthic eggs and has a ca.…”

Section: Experimental Designmentioning

confidence: 99%

See 2 more Smart Citations

Within‐generation consequences of postsettlement mortality for trait composition in wild populations: An experimental test

Ciotti

Planes

2019

Ecology and Evolution

View full text Add to dashboard Cite

There is a critical need to understand patterns and causes of intraspecific variation in physiological performance in order to predict the distribution and dynamics of wild populations under natural and human‐induced environmental change. However, the usual explanation for trait differences, local adaptation, fails to account for the small‐scale phenotypic and genetic divergence observed in fishes and other species with dispersive early life stages. We tested the hypothesis that local‐scale variation in the strength of selective mortality in early life mediates the trait composition in later life stages. Through in situ experiments, we manipulated exposure to predators in the coral reef damselfish Dascyllus aruanus and examined consequences for subsequent growth performance under common garden conditions. Groups of 20 recently settled D. aruanus were outplanted to experimental coral colonies in Moorea lagoon and either exposed to natural predation mortality (52% mortality in three days) or protected from predators with cages for three days. After postsettlement mortality, predator‐exposed groups were shorter than predator‐protected ones, while groups with lower survival were in better condition, suggesting that predators removed the longer, thinner individuals. Growth of both treatment groups was subsequently compared under common conditions. We did not detect consequences of predator exposure for subsequent growth performance: Growth over the following 37 days was not affected by the prior predator treatment or survival. Genotyping at 10 microsatellite loci did indicate, however, that predator exposure significantly influenced the genetic composition of groups. We conclude that postsettlement mortality did not have carryover effects on the subsequent growth performance of cohorts in this instance, despite evidence for directional selection during the initial mortality phase.

show abstract

Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 98%

Section: Experimental Designmentioning

confidence: 99%

See 1 more Smart Citation

Within‐generation consequences of postsettlement mortality for trait composition in wild populations: An experimental test

Ciotti

Planes

2019

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…A significant decrease in both allelic richness and heterozygosity over 50 years since the onset of exploitation was revealed in the silver seabream Pagrus auratus by using seven microsatellite loci (Hauser et al, 2002). In addition, a loss of allelic richness was found in the damselfish Dascyllus aruanus due to a high mortality during the recruitment stage, which was induced by environmental stress (Pini et al, 2011). Our study is in agreement with these previous findings, by showing significantly lower values in allelic number and allelic richness in Barrang Lompo than in Samalona.…”

Section: Discussion Genetic Variability and Differentiation Between Tmentioning

confidence: 98%

“…Studies revealed that allelic richness may be more sensitive to a population bottleneck and environmental stress than heterozygosity (Allendorf, 1986;Petit et al, 1998;Leberg, 2002;Pini et al, 2011). Accordingly, lower allelic richness in overharvested populations was recorded in many cases, which suggests that overharvest drives the decay of genetic diversity across a wide range of marine fishes (Pinsky and Palumbi, 2014).…”

Section: Discussion Genetic Variability and Differentiation Between Tmentioning

confidence: 99%

Reduced Genetic Diversity in the Clown Anemonefish Amphiprion ocellaris in Exploited Reefs of Spermonde Archipelago, Indonesia

2018

View full text Add to dashboard Cite

Time and space: genetic structure of the cohorts of the common sea urchin Paracentrotus lividus in Western Mediterranean

et al. 2011

View full text Add to dashboard Cite

Spatio-temporal variability in settlement and recruitment, high mortality during the first life-history stages, and selection may determine the genetic structure of cohorts of longlived marine invertebrates at small scales. We conducted a spatial and temporal analysis of the common Mediterranean sea urchin Paracentrotus lividus to determine the genetic structure of cohorts at different scales. In Tossa de Mar (NW Mediterranean), recruitment was followed over 5 consecutive springs (2006-2010). In spring 2008, recruits and two-year old individuals were collected at 6 locations along East and South Iberian coasts separated from 200 to over 1100 km. All cohorts presented a high genetic diversity based on a fragment of mtCOI. Our results showed a marked genetic homogeneity in the temporal monitoring, and a low degree of spatial structure in 2006. In 2008, coupled with an abnormality in the usual circulation patterns in the area, the genetic structure of the southern populations studied changed markedly, with arrival of many private haplotypes. This fact highlights the importance of point events in renewing the genetic make-up of populations, which can only be detected through analysis of the cohort structure coupling temporal and spatial perspectives.

show abstract

Genetic diversity loss associated to high mortality and environmental stress during the recruitment stage of a coral reef fish

Cited by 14 publications

References 34 publications

Within‐generation consequences of postsettlement mortality for trait composition in wild populations: An experimental test

Within‐generation consequences of postsettlement mortality for trait composition in wild populations: An experimental test

Reduced Genetic Diversity in the Clown Anemonefish Amphiprion ocellaris in Exploited Reefs of Spermonde Archipelago, Indonesia

Time and space: genetic structure of the cohorts of the common sea urchin Paracentrotus lividus in Western Mediterranean

Contact Info

Product

Resources

About