Considering evolutionary processes in conservation biology

Crandall, Keith A.; Bininda‐Emonds, Olaf R. P.; Mace, Georgina M.; Wayne, Robert K.

doi:10.1016/s0169-5347(00)01876-0

Cited by 1,590 publications

(1,321 citation statements)

References 33 publications

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“…Our results also add to the growing body of knowledge that marine fish populations do not conform to the classical panmictic population view, but rather are characterized by population structure on a much finer scale than expected from their dispersal and migratory abilities (Hauser & Carvalho 2008). It may be warranted to re-evaluate current management units and tailor management plans toward this finer scale in light of the importance of managing for biologically meaningful units, based on concepts of ecological exchangeability and maintaining biodiversity and biocomplexity (Crandall et al 2000, Bradbury et al 2008, ICES 2009, Reiss et al 2009). …”

Section: Conclusion and Management Implicationsmentioning

confidence: 71%

“…Adaptive divergence can occur over much shorter time scales than can neutral genetic differentiation (Endler 1986, Cano et al 2008, resulting in genetic differentiation of a greater magnitude for selected versus neutral loci (Beaumont & Balding 2004) : 177-195, 2010 therefore inappropriate for making inferences about population processes, such as migration rates and effective population size, they can serve an important function in genetic stock identification (Nielsen et al 2006, ICES 2009). The adaptive differences underlying variation at selected loci may have important management implications (Crandall et al 2000, Conover et al 2006, Hauser & Carvalho 2008, ICES 2009.…”

Section: Natural Selection and Local Adaptationmentioning

confidence: 99%

“…Although selected loci are therefore inappropriate for making inferences about population processes, such as migration rates and effective population size, they can serve an important function in genetic stock identification (Nielsen et al 2006, ICES 2009). The adaptive differences underlying variation at selected loci may have important management implications (Crandall et al 2000, Conover et al 2006, Hauser & Carvalho 2008, ICES 2009.…”

Section: Natural Selection and Local Adaptationmentioning

confidence: 99%

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Fine-scale spatial and temporal genetic structure of Atlantic cod off the Atlantic coast of the USA

Kovach¹,

Breton²,

Berlinsky³

et al. 2010

Mar. Ecol. Prog. Ser.

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Atlantic cod Gadus morhua in US waters are currently managed as 2 stocks: (1) a Gulf of Maine stock and (2) a Georges Bank and south stock. This designation is decades old and warrants re-evaluation in light of concerns that fisheries management units may not reflect biologically meaningful population units. In this study, we used 10 microsatellite loci, the PanI locus, and 5 single nucleotide polymorphism markers to characterize the population genetic structure of cod in US waters. We found significant differentiation among temporally and spatially divergent populations of cod (global F ST = 0.0044), primarily stemming from 2 potentially non-neutral loci, and evidence for a population structure that strongly contradicts the current 2-stock management model. This genetic structure was stable over a 5 yr period. Our results indicate that cod in US waters are broadly structured into 3 groups: (1) a northern spring-spawning coastal complex in the Gulf of Maine (GOM), (2) a southern complex consisting of winter-spawning inshore GOM, offshore GOM and sites south of Cape Cod, Massachusetts, and (3) a Georges Bank population. The strongest differentiation occurs between populations in the northern and southern complex (mean F ST = 0.0085), some of which spawn in the same bays in different seasons. By means of mixture analysis, young-of-the-year fish sampled on juvenile nurseries were assigned to the spawning complex of their origin. Our findings contribute to a growing body of knowledge that Atlantic cod and other marine fish populations are structured on a finer scale than previously thought and that this structure supports biocomplexity and locally adapted populations. As such, it may be warranted to re-evaluate current management units and tailor management plans toward this finer scale.KEY WORDS: Atlantic cod · Microsatellite DNA · Single nucleotide polymorphism · Population genetic structure · Stock identification · Gadus morhua Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 410: [177][178][179][180][181][182][183][184][185][186][187][188][189][190][191][192][193][194][195] 2010 the importance of processes that limit dispersal and promote self-replenishment of local populations, such as sedentary adult life history strategies (Robichaud & Rose 2004, Howell et al. 2008, spawning site fidelity (Taggart 1997), natal homing (Thorrold et al. 2001, Svedäng et al. 2007), egg and larval retention (Jones et al. 1999, 2005, Bradbury et al. 2008) and local adaptation (McIntyre & Hutchings 2003, Conover et al. 2006, Hutchings et al. 2007). The implications of such fine-scale population structure are important for effective management (Palumbi 2003, Bradbury et al. 2008, Reiss et al. 2009).One marine fish species known to exhibit fine-scale population structure in parts of its distribution is Atlantic cod Gadus morhua L. (see reviews in Waldman 2005 andCarvalho 2008). Atlantic cod is one of the most commercially important marine fishes in the world and comprises a p...

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Section: Conclusion and Management Implicationsmentioning

confidence: 71%

Section: Natural Selection and Local Adaptationmentioning

confidence: 99%

Section: Natural Selection and Local Adaptationmentioning

confidence: 99%

See 1 more Smart Citation

Fine-scale spatial and temporal genetic structure of Atlantic cod off the Atlantic coast of the USA

Kovach¹,

Breton²,

Berlinsky³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…While monophyly and exclusivity are necessary conditions for a group of organisms to have species status, they are not of themselves sufficient, because they do not address the processes responsible for maintaining a cohesive evolutionary trajectory within the group. The second step in the delimitation of evolutionary species is therefore to assess whether members of the group possess genetic exchangeability (where cohesion is maintained by gene flow among populations) or ecological exchangeability (where cohesion is maintained because populations occupy the same ecological niche and selective regime) (Templeton, 1989;Crandall et al, 2000).…”

Section: Species Concepts and Species Delimitationmentioning

confidence: 99%

Phylogenetic Pattern, Evolutionary Processes and Species Delimitation in the Genus Echinococcus

Lymbery

2017

Echinococcus and Echinococcosis, Part A

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“…Genetic distances according to Nei (1978) (below the diagonal) and Reynolds et al (1983) (above the diagonal) among six populations of "araticunzeiro". (Lynch 1996, Crandall et al 2000. As análises sugerem que a reprodução ocorre, preferencialmente, por fecundação cruzada, o que está de acordo com os dados sobre a biologia floral dessa espécie apresentados por Gottsberger (1994).…”

Section: Populaçõesunclassified

Caracterização genética de populações naturais de araticunzeiro (Annona crassiflora Mart. - Annonaceae) no Estado de Goiás

et al. 2003

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-(Genetic characterization of natural populations of "araticunzeiro" (Annona crassiflora Mart. -Annonaceae) collected in the State of Goiás, Brazil). The level and distribution of the genetic variability in natural populations of "araticunzeiro" were estimated using a sample of six natural populations, collected in two different regions of the State of Goiás, Brazil. Samples comprising 30 individuals from each population were genetically evaluated for four allozyme loci: 6-Phosphogluconate Dehydrogenase (6PGD), Phosphoglucomutase (PGM), Malate Dehydrogenase (MDH) and Leucine Aminopeptidase (LAP). Two dimeric loci were detected for the 6PGD isozyme system while all the other systems evaluated showed typical monomeric loci pattern. No polymorphism was detected for the MDH enzymatic system. The estimated average number of alleles per polymorphic loci was two. The estimated total heterozygosity (averaged across loci) was 0.357, suggesting that a high level of genetic variability is present in the species along the sampled geographic region. About 19% of the total genetic variation was found to be due to differences at the population level, suggesting the existence of a high genetic divergence among populations. Accordingly, the analysis of variance of allelic frequencies for each polymorphic loci showed a strong genetic structure at the population level. Significant values for the average coefficients of coancestry among individuals within populations and for total inbreeding were found. The genetic divergences between pairs of populations showed to be partially correlated to the geographic distances between pair members. Results obtained here suggested that A. crassiflora is preferentially alogamous, in conformity with other authors findings.Key words -Annona, "cerrado", genetic characterization, isozyme RESUMO -(Caracterização genética de populações naturais de araticunzeiro (Annona crassiflora Mart. -Annonaceae) no Estado de Goiás). No intuito de avaliar a magnitude e a distribuição da variabilidade genética existente em populações naturais de araticunzeiro, seis populações oriundas de duas regiões do Estado de Goiás foram amostradas (30 indivíduos cada) e analisadas para quatro sistemas enzimáticos: 6-Fosfogluconato Desidrogenase (6PGD), Fosfoglucomutase (PGM), Malato Desidrogenase (MDH) e Leucina Aminopeptidase (LAP). Dois locos diméricos foram encontrados para a enzima 6PGD, e um loco monomérico para os demais sistemas. Somente a enzima MDH apresentou monomorfismo em todas as populações, sendo que o número médio de alelos por loco polimórfico foi igual a dois. A heterozigosidade total média foi de 0,357, denotando a existência de elevada variabilidade genética na região para esta espécie. Cerca de 19% da variação genética total foram devidos a diferenças interpopulacionais, indicando uma elevada divergência genética entre as populações. A análise de variância das freqüências alélicas para os locos polimórficos no conjunto de populações evidenciou um elevado grau de estruturação genética em nível popul...

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Considering evolutionary processes in conservation biology

Cited by 1,590 publications

References 33 publications

Fine-scale spatial and temporal genetic structure of Atlantic cod off the Atlantic coast of the USA

Fine-scale spatial and temporal genetic structure of Atlantic cod off the Atlantic coast of the USA

Phylogenetic Pattern, Evolutionary Processes and Species Delimitation in the Genus Echinococcus

Caracterização genética de populações naturais de araticunzeiro (Annona crassiflora Mart. - Annonaceae) no Estado de Goiás

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