Low interbasin connectivity in a facultatively diadromous fish: evidence from genetics and otolith chemistry

Hughes, Jane; Schmidt, Daniel J.; Macdonald, Jed I.; Huey, Joel A.; Crook, David A.

doi:10.1111/mec.12661

Cited by 43 publications

(54 citation statements)

References 63 publications

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“…Miller et al, 2005;Schmidt et al, 2011aSchmidt et al, , 2014Hughes et al, 2014). By combining analyses of otolith chemistry and genetic markers, it is possible to gain powerful insights into the role of migration in structuring populations of fish over a range of temporal and spatial scales.…”

Section: Discussionmentioning

confidence: 99%

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Is variable connectivity among populations of a continental gobiid fish driven by local adaptation or passive dispersal?

et al. 2014

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Summary Amphidromy, the dispersal of larvae to the estuarine or marine environment with juveniles recolonising fresh waters to complete development, is common on tropical islands. This has led to the suggestion that amphidromy is an adaptation to hydrologically unpredictable environments, allowing recolonisation after local extinction (dispersal‐limitation hypothesis). Alternatively, amphidromy may be more common in streams with stronger flow, as high tractive forces flush larvae into the estuarine/marine environment, forcing them to recolonise (passive dispersal hypothesis). We tested these hypotheses in a continental gobiid fish, the Roman Nose Goby (Awaous acritosus) that inhabits hydrologically and physically diverse catchments on the east coast of Australia. We measured 87Sr/86Sr along transects of the otoliths of 92 adult fish from 12 catchments, identified migratory life histories from these data and correlated the proportion of migratory fish with key environmental variables. This information was augmented with data from mtDNA (n = 276) and six microsatellite loci (n = 429) from 19 catchments, to explore gene flow among catchments and to assess whether local adaptation was likely in the face of high or restricted gene flow. Estimates of 87Sr/86Sr along transects revealed high variation in life history, with 63% of individuals showing no evidence of marine/estuarine residence. The slope of catchments was the only significant variable associated with the proportion of larvae retained in catchments, with steep catchments having a greater proportion of adults exhibiting a marine/estuarine phase during early life. Total panmixia was detected with mtDNA and six microsatellite loci, suggesting that gene flow is high for this species. These results support the passive dispersal hypothesis. Steep slopes are likely to have higher tractive forces in their flow, leading to a greater proportion of larvae being flushed into the estuary or sea. In addition, high gene flow would inhibit local adaptation, making the dispersal‐limitation hypothesis unlikely. This study provides a framework for understanding how local adaptation may be constrained by gene flow across the landscape so that the adaptive or passive mechanism underlying facultative amphidromy can be explored.

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Section: Discussionmentioning

confidence: 99%

“…Cook et al, 2011;Schmidt et al, 2011a;Page et al, 2012;Hughes, Huey & Schmidt, 2013;Hughes et al, 2014). Molecular markers are often used to explore the life history of diadromous species (e.g.…”

Section: Introductionmentioning

confidence: 99%

Is variable connectivity among populations of a continental gobiid fish driven by local adaptation or passive dispersal?

et al. 2014

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“…In contrast to the typically strong regional phylogeographic structure detected within southern Australia's freshwater‐limited taxa (above), relatively shallow genetic structure has been detected in riverine taxa that can potentially tolerate estuarine and/or marine conditions (e.g. Philypnodon : Thacker, Unmack, Matsui, Duong, & Huang, ; Galaxias brevipinnis : Waters, Shirley, & Closs, ; Paratya : Cook et al, ; but note regional differentiation in Retropinna : Hammer, Adams, Unmack, & Walker, ; Hughes, Schmidt, MacDonald, Huey, & Crook, ).…”

Section: Southeast Australian Freshwater Phylogeogeographymentioning

confidence: 94%

The lasting biological signature of Pliocene tectonics: Reviewing the re‐routing of Australia's largest river drainage system

Waters

Burridge

Craw

2019

Journal of Biogeography

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Aim Biological diversification can be substantially influenced by earth history. The links between biological and geological processes can be particularly tight for obligate freshwater biota. Here, we test for such links with respect to Pliocene shifts in drainage geometry of one of the Australia's largest river systems. Location Major rivers of south‐eastern Australia. Taxon Freshwater‐limited fishes and crayfish. Methods We synthesize recently published geological and freshwater phylogeographic data to elucidate the evolutionary history of south‐eastern Australia's major river drainages and their biotas. Results Recent data demonstrate how a major Pliocene drainage rearrangement event in the lower Murray‐Darling basin led to the evolution of a distinctive and “marooned” phylogeographic assemblage in the Glenelg and Wimmera drainages. Main conclusions Biological data from southern Australia illuminate the region's geological history, and vice versa. Our study highlights the persisting evolutionary effects of a major Pliocene drainage rearrangement. The lasting geological and biological preservation of such an ancient tectonic event is apparently facilitated by Australia's uniquely stable geological setting.

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“…A number of phylogeographic studies on amphidromous species have revealed a lack of geographic structure and high levels of gene flow over scales from hundreds to thousands of kilometres, e.g. neritid snails [14], [15], gobiid fish [16] as well as atyid and palaemonid shrimps [17], although there are exceptions [18]. …”

Section: Introductionmentioning

confidence: 99%

Phylogeographic patterning among two codistributed shrimp species (Crustacea: Decapoda: Palaemonidae) reveals high levels of connectivity across biogeographic regions along the South African coast

2017

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We compare the genetic structuring and demographic history of two sympatric caridean shrimp species with distinct life history traits, one amphidromous species Palaemon capensis and one marine/estuarine species Palaemon peringueyi, in the historical biogeographical context of South Africa. A total of 103 specimens of P. capensis collected from 12 localities and 217 specimens of P. peringueyi collected from 24 localities were sequenced for the mitochondrial cytochrome oxidase one (CO1) locus. Results from analyses of molecular variance (AMOVA), pairwise ΦST comparisons and haplotype networks demonstrate weak to moderate genetic differentiation in P. capensis and P. peringueyi respectively. P. peringueyi exhibits partial isolation between populations associated with distinct biogeographic regions, likely driven by the region’s oceanography. However, there is minimal evidence for the occurrence of discrete regional evolutionary lineages. This demonstrated lack of genetic differentiation is consistent with a marine, highly dispersive planktonic phase in both the amphidromous P. capensis and the marine/estuarine P. peringueyi. Bayesian skyline plots, mismatch expansions and time since expansion indicate that both species maintained stable populations during the Last Glacial Maximum (LGM), unlike other southern African aquatic species.

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Low interbasin connectivity in a facultatively diadromous fish: evidence from genetics and otolith chemistry

Cited by 43 publications

References 63 publications

Is variable connectivity among populations of a continental gobiid fish driven by local adaptation or passive dispersal?

Is variable connectivity among populations of a continental gobiid fish driven by local adaptation or passive dispersal?

The lasting biological signature of Pliocene tectonics: Reviewing the re‐routing of Australia's largest river drainage system

Phylogeographic patterning among two codistributed shrimp species (Crustacea: Decapoda: Palaemonidae) reveals high levels of connectivity across biogeographic regions along the South African coast

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