Coupling of Barriers to Gene Exchange: Causes and Consequences

Cold Spring Harbor Perspectives in Biology, Год журнала: 2024, Номер 16(8), С. a041432 - a041432

Опубликована: Янв. 8, 2024

Erik B. Dopman1, Kerry L. Shaw2, Maria R. Servedio3, Roger K. Butlin4,5 and Carole M. Smadja6 1Department of Biology, Tufts University, Medford, Massachusetts 02155, USA 2Department Neurobiology Behavior, Cornell Ithaca, New York 14853, 3Department University North Carolina, Chapel Hill, Carolina 27599, 4Ecology Evolutionary School Biosciences, The Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom 5Department Marine Sciences, Gothenburg, Gothenburg 40530, Sweden 6Institut des Sciences de l'Evolution Montpellier ISEM, Universite Montpellier, CNRS, IRD, 34095, France Correspondence: erik.dopman{at}tufts.edu

Язык: Английский

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The Ecology of Hybrid Incompatibilities

Cold Spring Harbor Perspectives in Biology, Год журнала: 2023, Номер 16(9), С. a041440 - a041440

Опубликована: Дек. 27, 2023

Ecologically mediated selection against hybrids, caused by hybrid phenotypes fitting poorly into available niches, is typically viewed as distinct from epistatic Dobzhansky-Muller incompatibilities. Here, we show how transgressive in hybrids manifests incompatibility. After outlining our logic, summarize current approaches for studying ecology-based on hybrids. We then quantitatively review QTL-mapping studies and find traits differing between parent taxa are polygenic. Next, describe verbal models of translate to phenotypic genetic fitness landscapes, highlighting emerging detecting polygenic Finally, a synthesis published data, report that trait transgression-and thus possibly extrinsic incompatibility hybrids-escalates with the divergence parents. discuss conceptual implications conclude ecological basis will facilitate new discoveries about mechanisms speciation.

Язык: Английский

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Local adaptation and reproductive isolation: when does speciation start?

Evolutionary Journal of the Linnean Society, Год журнала: 2024, Номер 3(1)

Опубликована: Янв. 1, 2024

Abstract The speciation process often takes a long time. continuum framework has been useful to reconstruct the evolutionary processes that result in formation of new species but defining when this starts is far from trivial. Although panmictic population considered initial condition speciation, unrealistic for almost all species. Local or divergent adaptation are viewed by many researchers as shape intraspecific diversity and thus not part speciation. We propose reproductive isolation becomes greater than zero, arguing favour alternative view local necessarily involves some isolation, independently whether it results completion Given widespread, consequence most constantly speciating. best represented separate subnetworks, defined within extended fluid spatial networks populations.

Язык: Английский

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A constellation of dysfunctional hybrid phenotypes enforces reproductive isolation betweenCaenorhabditisnematode species

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Abstract The evolution of complete reproductive isolation hinges on the cumulative action isolating barriers that can manifest throughout life cycle an organism. Consequently, a comprehensive understanding features underlying origin and maintenance species requires assessing relative contributions distinct to overall isolation. Here we characterize multiple interrelated across various developmental stages nematode sister Caenorhabditis remanei latens . We quantified F1 hybrid male sterility characterized phenotypic causes associated with abnormalities in germline as well non-germline gonad somatic tissues, uncovering complex suite defects contributing strong postzygotic Despite these multifarious barrier traits, assays testing for interspecies sperm transfer under “choice” conditions did not yield evidence premating In contrast other pairs, also found no ectopic migration acts postmating-prezygotic barrier. constellation hybrids points polygenic or highly pleiotropic basis dysfunction implicates more rapid intrinsic than prezygotic organisms.

Язык: Английский

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Beyond Haldane’s rule: Sex-biased hybrid dysfunction for all modes of sex determination

eLife, Год журнала: 2024, Номер 13

Опубликована: Авг. 19, 2024

Haldane's rule occupies a special place in biology as one of the few 'rules' speciation, with empirical support from hundreds species. And yet, its classic purview is restricted taxonomically to subset organisms heteromorphic sex chromosomes. I propose explicit acknowledgement generalized hypotheses about that frame bias hybrid dysfunction broadly and irrespective sexual system. The consensus view holds sex-biased across taxa composite phenomenon requires explanations multiple causes. Testing alternative for is, many cases, applicable homomorphic chromosomes, environmental determination, haplodiploidy, hermaphroditism. Integration variety biological phenomena hybrids diverse systems, beyond rule, will help derive more general understanding contributing forces mechanisms lead predictable biases evolutionary divergence speciation.

Язык: Английский

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Eco-evolutionary dynamics in changing environments: integrating theory with data

Journal of Evolutionary Biology, Год журнала: 2024, Номер 37(6), С. 579 - 587

Опубликована: Июнь 1, 2024

Язык: Английский

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