Reconciling seascape genetics and fisheries science in three codistributed flatfishes

Vandamme, Sara; Raeymaekers, Joost; Maes, Grégory E.; Cottenie, Karl; Calboli, Federico C. F.; Diopere, Eveline; Volckaert, Filip A. M.

doi:10.1111/eva.13139

Cited by 6 publications

(7 citation statements)

References 129 publications

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“…Comparison of empirical patterns between species shows whether it is feasible to identify a single model species, representing the responses of other species in an entire community (Blanchet et al, 2010 ). Our results, however, indicate that conservation of genetic diversity requires species‐specific actions in an ecosystem context, as suggested earlier in the freshwater (Blanchet et al, 2010 ; Prunier et al, 2018 ; Raeymaekers et al, 2017 ) and marine (Reiss et al, 2009 ; Vandamme et al, 2021 ) literature.…”

Section: Discussionsupporting

confidence: 76%

Contrasting population genetic responses to migration barriers in two native and an invasive freshwater fish

Deflem

Calboli

Christiansen

et al. 2022

Evolutionary Applications

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Habitat fragmentation impacts the distribution of genetic diversity and population genetic structure. Therefore, protecting the evolutionary potential of species, especially in the context of the current rate of human-induced environmental change, is an important goal. In riverine ecosystems, migration barriers affect the genetic structure of native species, while also influencing the spread of invasive species. In this study, we compare genetic patterns of two native and one highly invasive riverine fish species in a Belgian river basin, namely the native three-spined stickleback (Gasterosteus aculeatus) and stone loach (Barbatula barbatula), and the non-native and invasive topmouth gudgeon (Pseudorasbora parva). We aimed to characterize both natural and anthropogenic determinants of genetic diversity and population genetic connectivity. Genetic diversity was highest in topmouth gudgeon, followed by stone loach and three-spined stickleback. The correlation between downstream distance and genetic diversity, a pattern often observed in riverine systems, was only marginally significant in stone loach and three-spined stickleback, while genetic diversity strongly declined with increasing number of barriers in topmouth gudgeon. An Isolation-By-Distance pattern characterizes the population genetic structure of each species. Population differentiation was only associated with migration barriers in the invasive topmouth gudgeon, while genetic composition of all species seemed at least partially determined by the presence of migration barriers. Among the six barrier types considered (watermills, sluices, tunnels, weirs, riverbed obstructions, and others), the presence of watermills was the strongest driver of genetic structure and composition. Our results indicate that conservation and restoration actions, focusing on conserving genetic patterns, cannot be generalized across species. Moreover, measures might target either on restoring connectivity, while risking a rapid spread of the invasive topmouth gudgeon, or not restoring connectivity, while risking native species extinction in upstream populations.

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Section: Discussionsupporting

confidence: 76%

Contrasting population genetic responses to migration barriers in two native and an invasive freshwater fish

Deflem

Calboli

Christiansen

et al. 2022

Evolutionary Applications

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“…A lack of correlation between genetic and geographic distances along the Bulgarian Black Sea coast was recorded. This result may be evidence of the hydrodynamic factors that have an effect on the dispersal potential of larvae phases and subsequently affect genetic differentiation (Vandamme et al 2014(Vandamme et al , 2020. S. maximus spawn with pelagic eggs (Vasil'eva 2007) and perform compensatory migration to the north against taking the caviar to the south of the currents along the Bulgarian coast (Karapetkova and Zhivkov 2006).…”

Section: Discussionmentioning

confidence: 99%

“…Information on the genetic structure of commercially important fish species is crucial to prevent ecological damage and to ensure sustainable and effective management of exploited stocks and systems (Liu and Cordes 2004;Olsson et al 2007). Molecular markers (microsatellites and mtDNA) were applied only to closely-related turbot species in different marine regions in order to assess the genetic diversity (Bouza et al 2002;Suzuki et al 2004;Vandamme et al 2014Vandamme et al , 2020do Prado et al 2018). Thus, using these molecular markers, limited data on the population structure of S. maximus in the Black Sea were obtained (Atanassov et al 2011;Nikolov et al 2015;Bessonova and Nebesikhina 2019;Turan et al 2019b;Firidin et al 2020;Ivanova et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity and morphological characterisation of three turbot (Scophthalmus maximus L., 1758) populations along the Bulgarian Black Sea coast

Ivanova¹,

Dzhembekova²,

Atanassov³

et al. 2021

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Turbot (Scophthalmus maximus L., 1758) is a valuable commercial fish species classified as endangered. The conservation and sustainability of the turbot populations require knowledge of the population’s genetic structure and constant monitoring of its biodiversity. The present study was performed to evaluate the population structure of turbot along the Bulgarian Black Sea coast using seven pairs of microsatellites, two mitochondrial DNA (COIII and CR) and 23 morphological (15 morphometric and 8 meristic) markers. A total of 72 specimens at three locations were genotyped and 59 alleles were identified. The observed number of alleles of microsatellites was more than the effective number of alleles. The overall mean values of observed (Ho) and expected heterogeneity (He) were 0.638 and 0.685. A high rate of migration between turbot populations (overall mean of Nm = 17.484), with the maximum value (19.498) between Shabla and Nesebar locations, was observed. This result corresponded to the low level of genetic differentiation amongst these populations (overall mean Fst = 0.014), but there was no correlation between genetic and geographical distance. A high level of genetic diversity in the populations was also observed. The average Garza-Williamson M index value for all populations was low (0.359), suggesting a reduction in genetic variation due to a founder effect or a genetic bottleneck. Concerning mitochondrial DNA, a total number of 17 haplotypes for COIII and 41 haplotypes for CR were identified. The mitochondrial DNA control region showed patterns with high haplotype diversity and very low nucleotide diversity, indicating a significant number of closely-related haplotypes and suggesting that this population may have undergone a recent expansion. Tajima’s D test and Fu’s FS test suggested recent population growth. Pairwise Fst values were very low. The admixture and lack of genetic structuring found pointed to the populations analysed probably belonging to the same genetic unit. Therefore, a proper understanding and a sound knowledge of the level and distribution of genetic diversity in turbot is an important prerequisite for successful sustainable development and conservation strategies to preserve their evolutionary potential.

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“…Genetic markers showing a significant departure, above or below the neutral data set are potential outliers under divergent or stabilizing selection, respectively. Divergent outliers can unravel a fine-scale structure related to environmental variables critical for resources management (Coscia et al, 2020;Longo et al, 2020;Schulze et al, 2020;Vandamme et al, 2021;Vera et al, 2019;Whitaker et al, 2020). Temperature, salinity and other abiotic factors have been suggested as potential drivers for adaptive differentiation in C. edule (Coscia et al, 2020), as in other marine species in the region (do Prado et al, 2018;Vera et al, 2016).…”

Section: Population Structure and Connectivitymentioning

confidence: 99%

Genomic survey of edible cockle (Cerastoderma edule) in the Northeast Atlantic: A baseline for sustainable management of its wild resources

Vera

Maroso

Wilmes

et al. 2022

Evolutionary Applications

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Knowledge on correlations between environmental factors and genome divergence between populations of marine species is crucial for sustainable management of fisheries and wild populations. The edible cockle (Cerastoderma edule) is a marine bivalve distributed along the Northeast Atlantic coast of Europe and is an important resource from both commercial and ecological perspectives. We performed a population genomics screening using 2b‐RAD genotyping on 9309 SNPs localized in the cockle's genome on a sample of 536 specimens pertaining to 14 beds in the Northeast Atlantic Ocean to analyse the genetic structure with regard to environmental variables. Larval dispersal modelling considering species behaviour and interannual/interseasonal variation in ocean conditions was carried out as an essential background to which compare genetic information. Cockle populations in the Northeast Atlantic displayed low but significant geographical differentiation between populations (FST = 0.0240; p < 0.001), albeit not across generations. We identified 742 and 36 outlier SNPs related to divergent and balancing selection in all the geographical scenarios inspected, and sea temperature and salinity were the main environmental correlates suggested. Highly significant linkage disequilibrium was detected at specific genomic regions against the very low values observed across the whole genome. Two main genetic groups were identified, northwards and southwards of French Brittany. Larval dispersal modelling suggested a barrier for larval dispersal linked to the Ushant front that could explain these two genetic clusters. Further genetic subdivision was observed using outlier loci and considering larval advection. The northern group was divided into the Irish/Celtic Seas and the English Channel/North Sea, while the southern group was divided into three subgroups. This information represents the baseline for the management of cockles, designing conservation strategies, founding broodstock for depleted beds and producing suitable seed for aquaculture production.

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Reconciling seascape genetics and fisheries science in three codistributed flatfishes

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 6 publications

References 129 publications

Contrasting population genetic responses to migration barriers in two native and an invasive freshwater fish

Contrasting population genetic responses to migration barriers in two native and an invasive freshwater fish

Genetic diversity and morphological characterisation of three turbot (Scophthalmus maximus L., 1758) populations along the Bulgarian Black Sea coast

Genomic survey of edible cockle (Cerastoderma edule) in the Northeast Atlantic: A baseline for sustainable management of its wild resources

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