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  • 1
    Online Resource
    Online Resource
    Modeling strategic sperm allocation: Tailoring the predictions to the species : SPECIES-SPECIFIC PREDICTIONS FOR SPERM ALLOCATION
    Wiley ; 2018
    In:  Evolution Vol. 72, No. 3 ( 2018-03), p. 414-425
    Details
    In: Evolution, Wiley, Vol. 72, No. 3 ( 2018-03), p. 414-425
    Type of Medium: Online Resource
    ISSN: 0014-3820
    URL: Issue
    URL: Article
    DOI: 10.1111/evo.2018.72.issue-3
    DOI: 10.1111/evo.13423
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2036375-8
    SSG: 12
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  • 2
    Online Resource
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    The Genomic Architecture of a Rapid Island Radiation: Recombination Rate Variation, Chromosome Structure, and Genome Assembly of the Hawaiian Cricket Laupala
    Oxford University Press (OUP) ; 2018
    In:  Genetics Vol. 209, No. 4 ( 2018-08-01), p. 1329-1344
    Details
    In: Genetics, Oxford University Press (OUP), Vol. 209, No. 4 ( 2018-08-01), p. 1329-1344
    Abstract: Phenotypic evolution and speciation depend on recombination in many ways. Within populations, recombination can promote adaptation by bringing together favorable mutations and decoupling beneficial and deleterious alleles. As populations diverge, crossing over can give rise to maladapted recombinants and impede or reverse diversification. Suppressed recombination due to genomic rearrangements, modifier alleles, and intrinsic chromosomal properties may offer a shield against maladaptive gene flow eroding coadapted gene complexes. Both theoretical and empirical results support this relationship. However, little is known about this relationship in the context of behavioral isolation, where coevolving signals and preferences are the major hybridization barrier. Here we examine the genomic architecture of recently diverged, sexually isolated Hawaiian swordtail crickets (Laupala). We assemble a de novo genome and generate three dense linkage maps from interspecies crosses. In line with expectations based on the species’ recent divergence and successful interbreeding in the laboratory, the linkage maps are highly collinear and show no evidence for large-scale chromosomal rearrangements. Next, the maps were used to anchor the assembly to pseudomolecules and estimate recombination rates across the genome to test the hypothesis that loci involved in behavioral isolation (song and preference divergence) are in regions of low interspecific recombination. Contrary to our expectations, the genomic region where a male song and female preference QTL colocalize is not associated with particularly low recombination rates. This study provides important novel genomic resources for an emerging evolutionary genetics model system and suggests that trait–preference coevolution is not necessarily facilitated by locally suppressed recombination.
    Type of Medium: Online Resource
    ISSN: 1943-2631
    URL: Article
    DOI: 10.1534/genetics.118.300894
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2018
    detail.hit.zdb_id: 1477228-0
    SSG: 12
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  • 3
    Online Resource
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    Polyandry and postcopulatory sexual selection in a wild population
    Wiley ; 2015
    In:  Molecular Ecology Vol. 24, No. 24 ( 2015-12), p. 6278-6288
    Details
    In: Molecular Ecology, Wiley, Vol. 24, No. 24 ( 2015-12), p. 6278-6288
    Abstract: When females mate multiply, postcopulatory sexual selection can occur via sperm competition and cryptic female choice. Although postcopulatory selection has the potential to be a major force in driving evolution, few studies have estimated its strength in natural populations. Likewise, although polyandry is widespread across taxa and is the focus of a growing body of research, estimates of natural female mating rates are still limited in number. Microsatellites can be used to estimate the number of mates represented in females' sperm stores and the number of sires contributing to their offspring, enabling comparisons both of polyandry and of two components of postcopulatory selection: the proportion of males that mate but fail to sire offspring, and the degree of paternity skew among the males that do sire offspring. Here, we estimate the number of mates and sires among wild females in the Hawaiian swordtail cricket Laupala cerasina . We compare these estimates to the actual mating rates and paternity shares we observed in a semi‐natural population. Our results show that postcopulatory sexual selection operates strongly in this species: wild females mated with an average minimum of 3.6 males but used the sperm from only 58% of them. Furthermore, among the males that did sire offspring, paternity was significantly skewed. These patterns were similar to those observed in the field enclosure, where females mated with an average of 5.7 males and used the sperm from 62% of their mates, with paternity significantly skewed among the sires.
    Type of Medium: Online Resource
    ISSN: 0962-1083 , 1365-294X
    URL: Issue
    URL: Article
    DOI: 10.1111/mec.2015.24.issue-24
    DOI: 10.1111/mec.13470
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2015
    detail.hit.zdb_id: 2020749-9
    detail.hit.zdb_id: 1126687-9
    SSG: 12
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  • 4
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    Parallel genomic architecture underlies repeated sexual signal divergence in Hawaiian Laupala crickets
    The Royal Society ; 2019
    In:  Proceedings of the Royal Society B: Biological Sciences Vol. 286, No. 1912 ( 2019-10-09), p. 20191479-
    Details
    In: Proceedings of the Royal Society B: Biological Sciences, The Royal Society, Vol. 286, No. 1912 ( 2019-10-09), p. 20191479-
    Abstract: When the same phenotype evolves repeatedly, we can explore the predictability of genetic changes underlying phenotypic evolution. Theory suggests that genetic parallelism is less likely when phenotypic changes are governed by many small-effect loci compared to few of major effect, because different combinations of genetic changes can result in the same quantitative outcome. However, some genetic trajectories might be favoured over others, making a shared genetic basis to repeated polygenic evolution more likely. To examine this, we studied the genetics of parallel male mating song evolution in the Hawaiian cricket Laupala . We compared quantitative trait loci (QTL) underlying song divergence in three species pairs varying in phenotypic distance. We tested whether replicated song divergence between species involves the same QTL and whether the likelihood of QTL sharing is related to QTL effect size. Contrary to theoretical predictions, we find substantial parallelism in polygenic genetic architectures underlying repeated song divergence. QTL overlapped more frequently than expected based on simulated QTL analyses. Interestingly, QTL effect size did not predict QTL sharing, but did correlate with magnitude of phenotypic divergence. We highlight potential mechanisms driving these constraints on cricket song evolution and discuss a scenario that consolidates empirical quantitative genetic observations with micro-mutational theory.
    Type of Medium: Online Resource
    ISSN: 0962-8452 , 1471-2954
    URL: Article
    DOI: 10.1098/rspb.2019.1479
    Language: English
    Publisher: The Royal Society
    Publication Date: 2019
    detail.hit.zdb_id: 1460975-7
    SSG: 12
    SSG: 25
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  • 5
    Online Resource
    Online Resource
    The Genetics of Mating Song Evolution Underlying Rapid Speciation: Linking Quantitative Variation to Candidate Genes for Behavioral Isolation
    Oxford University Press (OUP) ; 2019
    In:  Genetics Vol. 211, No. 3 ( 2019-03-01), p. 1089-1104
    Details
    In: Genetics, Oxford University Press (OUP), Vol. 211, No. 3 ( 2019-03-01), p. 1089-1104
    Abstract: A common component of divergence in mating behavior is the distinctive mating songs of insects, and identifying genes underlying natural variation in acoustic behavior is important for understanding targets of selection during speciation. Here... Differences in mating behaviors evolve early during speciation, eventually contributing to reproductive barriers between species. Knowledge of the genetic and genomic basis of these behaviors is therefore integral to a causal understanding of speciation. Acoustic behaviors are often part of the mating ritual in animal species. The temporal rhythms of mating songs are notably species-specific in many vertebrates and arthropods and often underlie assortative mating. Despite discoveries of mutations that disrupt the temporal rhythm of these songs, we know surprisingly little about genes affecting naturally occurring variation in the temporal pattern of singing behavior. In the rapidly speciating Hawaiian cricket genus Laupala, the striking species variation in song rhythms constitutes a behavioral barrier to reproduction between species. Here, we mapped the largest-effect locus underlying interspecific variation in song rhythm between two Laupala species to a narrow genomic region, wherein we find no known candidate genes affecting song temporal rhythm in Drosophila. Whole-genome sequencing, gene prediction, and functional annotation of this region reveal an exciting and promising candidate gene, the putative cyclic nucleotide-gated ion channel-like gene, for natural variation in mating behavior, suggesting that ion channels are important targets of selection on rhythmic signaling during establishment of behavioral isolation and rapid speciation.
    Type of Medium: Online Resource
    ISSN: 1943-2631
    URL: Article
    DOI: 10.1534/genetics.118.301706
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 1477228-0
    SSG: 12
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  • 6
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    Comparative phylogeography of oceanic archipelagos: Hotspots for inferences of evolutionary process
    Proceedings of the National Academy of Sciences ; 2016
    In:  Proceedings of the National Academy of Sciences Vol. 113, No. 29 ( 2016-07-19), p. 7986-7993
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 113, No. 29 ( 2016-07-19), p. 7986-7993
    Abstract: Remote island archipelagos offer superb opportunities to study the evolution of community assembly because of their relatively young and simple communities where speciation contributes to the origin and evolution of community structure. There is great potential for common phylogeographic patterns among remote archipelagos that originate through hotspot volcanism, particularly when the islands formed are spatially isolated and linearly arranged. The progression rule is characterized by a phylogeographic concordance between island age and lineage age in a species radiation. Progression is most likely to arise when a species radiation begins on an older island before the emergence of younger islands of a hotspot archipelago. In the simplest form of progression, colonization of younger islands as they emerge and offer appropriate habitat, is coincident with cladogenesis. In this paper, we review recent discoveries of the progression rule on seven hotspot archipelagos. We then discuss advantages that progression offers to the study of community assembly, and insights that community dynamics may offer toward understanding the evolution of progression. We describe results from two compelling cases of progression where the mosaic genome may offer insights into contrasting demographic histories that shed light on mechanisms of speciation and progression on remote archipelagos.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.1601078113
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 2016
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
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  • 7
    Online Resource
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    High opportunity for postcopulatory sexual selection under field conditions : PRECOPULATORY VERSUS POSTCOPULATORY SEXUAL SELECTION
    Wiley ; 2015
    In:  Evolution Vol. 69, No. 8 ( 2015-08), p. 2094-2104
    Details
    In: Evolution, Wiley, Vol. 69, No. 8 ( 2015-08), p. 2094-2104
    Type of Medium: Online Resource
    ISSN: 0014-3820
    URL: Article
    DOI: 10.1111/evo.12721
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2015
    detail.hit.zdb_id: 2036375-8
    SSG: 12
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  • 8
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    In memoriam: Richard G. Harrison – his life and legacy
    Wiley ; 2016
    In:  Molecular Ecology Vol. 25, No. 11 ( 2016-06), p. 2333-2336
    Details
    In: Molecular Ecology, Wiley, Vol. 25, No. 11 ( 2016-06), p. 2333-2336
    Abstract: Richard G. Harrison passed away unexpectedly on April 12th, 2016. In this memoriam we pay tribute to the life and legacy of an extraordinary scientist, mentor, friend, husband, and father.
    Type of Medium: Online Resource
    ISSN: 0962-1083 , 1365-294X
    URL: Issue
    URL: Article
    DOI: 10.1111/mec.2016.25.issue-11
    DOI: 10.1111/mec.13687
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2016
    detail.hit.zdb_id: 2020749-9
    detail.hit.zdb_id: 1126687-9
    SSG: 12
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  • 9
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    Online Resource
    Male use of chemical signals in sex discrimination of Hawaiian swordtail crickets (genus Laupala)
    Elsevier BV ; 2019
    In:  Animal Behaviour Vol. 156 ( 2019-10), p. 111-120
    Details
    In: Animal Behaviour, Elsevier BV, Vol. 156 ( 2019-10), p. 111-120
    Type of Medium: Online Resource
    ISSN: 0003-3472
    URL: Article
    DOI: 10.1016/j.anbehav.2019.06.033
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2019
    detail.hit.zdb_id: 1461112-0
    SSG: 12
    SSG: 5,2
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  • 10
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    Niche conservatism predominates in adaptive radiation: comparing the diversification of Hawaiian arthropods using ecological niche modelling
    Oxford University Press (OUP) ; 2019
    In:  Biological Journal of the Linnean Society Vol. 127, No. 2 ( 2019-05-22), p. 479-492
    Details
    In: Biological Journal of the Linnean Society, Oxford University Press (OUP), Vol. 127, No. 2 ( 2019-05-22), p. 479-492
    Abstract: The role of the environmental niche in fostering ecological divergence during adaptive radiation remains enigmatic. In this study, we examine the interplay between environmental niche divergence and conservatism in the context of adaptive radiation on oceanic islands, by characterizing the niche breadth of four Hawaiian arthropod radiations: Tetragnatha spiders (Tetragnathidae Latreille, 1804), Laupala crickets (Gryllidae Otte, 1994), a clade of Drosophila flies (Drosophilidae Fallén, 1823) and Nesosydne planthoppers (Delphacidae Kirkaldy, 1907). We assembled occurrence datasets for the four lineages, modelled their distributions and quantified niche overlap. All four groups occupy the islands in distinct ways, highlighting the contrasting axes of diversification for different lineages. Laupala and Nesosydne have opposite environmental niche extents (broad and narrow, respectively), whereas Tetragnatha and Drosophila share relatively intermediate tolerances. Temperature constrains the distributions of all four radiations. Tests of phylogenetic signal suggest that, for Tetragnatha and Drosophila, closely related species exhibit similar environmental niches; thus, diversification is associated with niche conservatism. Sister species comparisons also show that populations often retain similar environmental tolerances, although exceptions do occur. Results imply that diversification does not occur through ecological speciation; instead, adaptive radiation occurs largely within a single environment.
    Type of Medium: Online Resource
    ISSN: 0024-4066 , 1095-8312
    URL: Article
    DOI: 10.1093/biolinnean/blz023
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 1461865-5
    detail.hit.zdb_id: 220623-7
    SSG: 12
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