Evaluating Adaptive Processes for Conservation and Management of Estuarine and Coastal Resources

Richards, Christina L.; Wares, John P.; Mackie, Joshua A.

doi:10.1007/s12237-010-9306-1

Cited by 19 publications

(19 citation statements)

References 53 publications

(65 reference statements)

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“…; Richards et al . ; González‐Wangüemert & Pérez‐Ruzafa ). Lower genetic diversity at a large scale can also be linked to a decrease in the effective size of the population, which could be affected by changes in habitat availability, ecological factors and fishery pressure promoting local extinction and recolonization at specific localities (Vergara‐Chen et al .…”

Section: Discussionmentioning

confidence: 99%

West versus East Mediterranean Sea: origin and genetic differentiation of the sea cucumber Holothuria polii

2014

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We studied the genetic structure of the sea cucumber Holothuria (Roweothuria) polii (Delle Chiaje 1823) by analysing the mitochondrial DNA variation in two fragments of cytochrome oxidase I (COI) and 16S genes. Individuals were collected in seven locations along the Mediterranean Sea, which cover a wide range of the species distribution. We found high haplotype diversity for COI and moderate diversity for 16S, and low nucleotide diversity for both genes. Our results for the COI gene showed many recent and exclusive haplotypes with few mutational changes, suggesting recent or ongoing population expansion. The Western and Eastern Mediterranean populations exhibited slight but significant genetic differentiation (COI gene) with higher genetic diversity in the East. The most ancient haplotype was not present in the westernmost sampling location (SE Spain). The oldest expansion time was observed in Turkey, corresponding to mid‐Pleistocene. Turkey had also the highest genetic diversity (number of total and exclusive haplotypes, polymorphisms, haplotype and nucleotide diversity). This suggests that this region could be the origin of the subsequent colonizations through the Mediterranean Sea, a hypothesis that should be assessed with nuclear markers in future research.

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Section: Discussionmentioning

confidence: 99%

West versus East Mediterranean Sea: origin and genetic differentiation of the sea cucumber Holothuria polii

2014

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“…The role that genetic variability and genetically based responses to an environment play in the success of species is fundamental to both ecological research and management efforts (e.g., Richards et al 2010 and references therein). Documentation of genetic structure and its distribution across the landscape is important to understanding the role of genetic variation in the success or failure of an invasion (Novak and Mack 2005;Lavergne and Molofsky 2007).…”

Section: Introductionmentioning

confidence: 99%

Genetic Variation in the Common Reed, Phragmites australis, in the Mississippi River Delta Marshes: Evidence for Multiple Introductions

Hauber

Saltonstall

White

et al. 2011

Estuaries and Coasts

117

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Multiple introductions are believed to play an important role in increasing genetic diversity and adaptability of invasive species, but there are few well-documented examples. The common reed, Phragmites australis, has dramatically increased in tidal wetlands throughout the USA in the past century due primarily to the introduction of a Eurasian lineage. In the Mississippi River "Balize" delta, P. australis is the dominant vegetation where monotypic stands of an introduced form blanket the outer marshes. The delta's interior marshes, on the other hand, are more vegetatively diverse, serving as important waterfowl foraging habitat. Recent encroachment by various phenotypic forms of P. australis into the interior marshes led to this study examining genetic variation in these stands. Our results revealed four chloroplast DNA haplotypes that also segregate based on microsatellite variation. Three of these are closely related and introduced, but differ relative to time and likely mode of introduction. The "Delta" type (haplotype M1), which is unique to the region and the most common lineage, displays considerable microsatellite diversity. The Eurasian introduced lineage of P. australis (haplotype M), which is invasive elsewhere in North America, is increasing its distribution in the delta. A novel haplotype, AD, was also identified which is phenotypically and genetically similar to haplotype M. Despite the close relatedness, we found no evidence for inter-haplotype gene exchange at the nuclear level, suggesting that intraspecific hybridization is not a contributing factor to these invasions. The site provides a unique opportunity for researchers to understand the dynamics of multiple P. australis invasions.

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“…If rates of inter-estuary gene flow are low as hypothesized, then estuarine taxa would be expected to exhibit a greater degree of genetic subdivision relative to taxa occurring on the open coast (Bilton et al 2002;Pelc et al 2009). However, as natural selection (Schmidt et al 2008;Richards et al 2010 and references therein) and patterns of historical gene flow (Avise et al 1987;Kelly et al 2006) can also influence population genetic structure, the interpretation of genetic patterns and estimation of gene flow has been complicated (Sotka et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Population Genetic Structure of the New Zealand Estuarine Clam Austrovenus stutchburyi (Bivalvia: Veneridae) Reveals Population Subdivision and Partial Congruence with Biogeographic Boundaries

Ross

Hogg

Pilditch

et al. 2011

Estuaries and Coasts

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We examined the population genetic structure of the New Zealand endemic clam, Austrovenus stutchburyi, to determine (1) whether populations of this estuarine taxon are genetically subdivided and (2) if the locations of genetic boundaries were congruent with known biogeographic break points. We obtained sequences of the mitochondrial gene cytochrome c oxidase I for 372 A. stutchburyi from 29 New Zealand estuaries and conducted analyses to identify population genetic structure. We detected a pattern of genetic isolation by distance and identified six A. stutchburyi subpopulations, a greater number of subpopulations than reported for much of New Zealand's open coast benthos. Although these data indicate that long distance dispersal may be less frequent in estuarine than in open coast taxa, partial congruence between genetic and biogeographic boundaries suggests that historical events and natural selection may also contribute to the observed population genetic structure.

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Evaluating Adaptive Processes for Conservation and Management of Estuarine and Coastal Resources

Cited by 19 publications

References 53 publications

West versus East Mediterranean Sea: origin and genetic differentiation of the sea cucumber Holothuria polii

West versus East Mediterranean Sea: origin and genetic differentiation of the sea cucumber Holothuria polii

Genetic Variation in the Common Reed, Phragmites australis, in the Mississippi River Delta Marshes: Evidence for Multiple Introductions

Population Genetic Structure of the New Zealand Estuarine Clam Austrovenus stutchburyi (Bivalvia: Veneridae) Reveals Population Subdivision and Partial Congruence with Biogeographic Boundaries

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