Kin-Aggregations Explain Chaotic Genetic Patchiness, a Commonly Observed Genetic Pattern, in a Marine Fish

Selwyn, Jason D.; Hogan, J. Derek; Downey-Wall, Alan M.; Gurski, Lauren; Portnoy, David S.; Heath, Daniel D.

doi:10.1371/journal.pone.0153381

Cited by 47 publications

(66 citation statements)

References 32 publications

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“…We found groups of no more than two siblings within our sampling area, in contrast to studies that identified aggregations of full siblings in coral reef systems (e.g., Selwyn et al, ; Veliz, Duchesne, Bourget, & Bernatchez, ). This suggests that physical dynamics driving aggregation might be weaker along the open coastline of California, or that our statistical power to accurately identify them is higher than that used in previous studies.…”

Section: Discussioncontrasting

confidence: 99%

Dispersal of a nearshore marine fish connects marine reserves and adjacent fished areas along an open coast

et al. 2019

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Marine species with pelagic larvae typically exhibit little population structure, suggesting long‐distance dispersal and high gene flow. Directly quantifying dispersal of marine fishes is challenging but important, particularly for the design of marine protected areas (MPAs). Here, we studied kelp rockfish (Sebastes atrovirens) sampled along ~25 km of coastline in a boundary current‐dominated ecosystem and used genetic parentage analysis to identify dispersal events and characterize them, because the distance between sedentary parents and their settled offspring is the lifetime dispersal distance. Large sample sizes and intensive sampling are critical for increasing the likelihood of detecting parent–offspring matches in such systems and we sampled more than 6,000 kelp rockfish and analysed them with a powerful set of 96 microhaplotype markers. We identified eight parent–offspring pairs with high confidence, including two juvenile fish that were born inside MPAs and dispersed to areas outside MPAs, and four fish born in MPAs that dispersed to nearby MPAs. Additionally, we identified 25 full‐sibling pairs, which occurred throughout the sampling area and included all possible combinations of inferred dispersal trajectories. Intriguingly, these included two pairs of young‐of‐the‐year siblings with one member each sampled in consecutive years. These sibling pairs suggest monogamy, either intentional or accidental, which has not been previously demonstrated in rockfishes. This study provides the first direct observation of larval dispersal events in a current‐dominated ecosystem and direct evidence that larvae produced within MPAs are exported both to neighbouring MPAs and to proximate areas where harvest is allowed.

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Section: Discussioncontrasting

confidence: 99%

Dispersal of a nearshore marine fish connects marine reserves and adjacent fished areas along an open coast

et al. 2019

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“…However, these approaches seldom consider the effect of fine-scale processes that are influenced by stochastic and patchy dispersal, such as high spatial coherence in the genetic structure of recruits. Such genetic patchiness can translate into cascading effects on local genetic diversity and population regulation (37,38). By demonstrating that larval aggregation can shape dispersal processes to a greater degree than previously thought, our results highlight the need to better understand the fine-scale physical and biological processes occurring in the pelagic ocean that affect the growth, survival, and dispersal of larvae.…”

Section: See Retraction Published December 18 2017mentioning

confidence: 58%

RETRACTED: Long-term aggregation of larval fish siblings during dispersal along an open coast

Ottmann

Grorud-Colvert

Sard

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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Center. In our study, we used microsatellite genotypes to infer that 57 of 491 new splitnose rockfish (Sebastes diploproa) recruits were siblings, suggesting cohesive dispersal over a 4-6 month period. After their examination of the raw data, Drs. Anderson and Garza suggested an alternative hypothesis in which the results derived from the existence of a cryptic species within our sample collection. We supplied them with all of the biological samples to reanalyze using a novel next-generation sequencing approach for species identification. The results from the new approach were confirmed by sequencing the control region of the mitochondrial genome. Together these new analyses reveal that instead of groups of siblings and nonsiblings, our juvenile samples consisted of two different rockfish species: splitnose rockfish and redbanded rockfish (S. babcocki). Given these new findings, we conclude that our estimates of relatedness were inflated within dyads containing individuals from the same species. Thus, while it is still possible that siblings may travel together in the pelagic ocean, we currently do not have evidence to support this hypothesis. The application of increasingly advanced molecular techniques to address fundamental ecological questions is of immense benefit to the field of marine ecology. As genetic techniques continue to rapidly evolve, we are firm supporters of open science and the publishing of raw data that allows vetting and collegial collaboration to advance science. We hereby retract the article and regret any inconvenience that it may have caused."Published under the PNAS license.www.pnas.org/cgi

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“…; Selwyn et al. ). Simulation studies have suggested that chaotic genetic patchiness is driven by (1) genetic drift created by small local effective population sizes and (2) collective dispersal at the larval phase (Broquet et al.…”

Section: Discussionmentioning

confidence: 98%

“…), which would also be expected to reinforce a pattern of genetic patchiness (Selwyn et al. ). Finally, it should be noted that the unique reproductive strategy of snook species may also play a role in the population genetic patterns observed here.…”

Section: Discussionmentioning

confidence: 99%

Demographic, Taxonomic, and Genetic Characterization of the Snook Species Complex (Centropomus spp.) along the Leading Edge of Its Range in the Northwestern Gulf of Mexico

Anderson

Williford

González

et al. 2020

N American J Fish Manag

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A recent increase in the abundance of snook species (Centropomus spp.) in Texas has been generally associated with a broad‐scale warming trend of Texas’ inshore waters, closure of the commercial fishery in 1987, and fairly conservative restrictions on recreational catch implemented at the same time. Despite this observed increase in abundance, little is known about the snook species complex in Texas, including uncertainty about recent changes in distribution and abundance, taxonomy, and population structure. Here, abundance and distribution data from a long‐running fishery‐independent (FIN) data set were analyzed in synergy with mitochondrial DNA (mtDNA) and microsatellite genotypes to answer basic questions about the snook species complex in Texas. The main findings from this work are as follows: (1) based on trends observed in FIN data, snook are increasing in abundance and expanding their range northward in Texas; (2) based on mtDNA sequencing, the two most common species of snook in Texas are the Common Snook C. undecimalis and Largescale Fat Snook C. mexicanus; (3) a third species, the Mexican Snook C. poeyi, occurs but only rarely; and (4) patterns from microsatellite genotypes suggest that the two predominant species, Common Snook and Largescale Fat Snook, probably constitute single genetic stocks in Texas, although evidence of chaotic genetic patchiness was also observed. This latter finding might be a general expectation for populations that are on the leading edge of an expanding species range and implies that management measures in Texas should be directed toward conservation of suitable habitat corridors offering environmental and habitat refugia as well as measures (e.g., stock enhancement) that increase the probability of survival of small, localized populations.

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Kin-Aggregations Explain Chaotic Genetic Patchiness, a Commonly Observed Genetic Pattern, in a Marine Fish

Cited by 47 publications

References 32 publications

Dispersal of a nearshore marine fish connects marine reserves and adjacent fished areas along an open coast

Dispersal of a nearshore marine fish connects marine reserves and adjacent fished areas along an open coast

RETRACTED: Long-term aggregation of larval fish siblings during dispersal along an open coast

Demographic, Taxonomic, and Genetic Characterization of the Snook Species Complex (Centropomus spp.) along the Leading Edge of Its Range in the Northwestern Gulf of Mexico

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