TESTS FOR SEXUAL INCOMPATIBILITY BETWEEN TWO NEWT SPECIES, <i>TRITURUS VULGARIS</i>
 AND <i>TRITURUS MONTANDONI</i>
: NO-CHOICE MATING DESIGN

Michalak, Pawel; Grzesik, Jolanta; Rafínski, Jan

doi:10.1111/j.1558-5646.1997.tb05128.x

Cited by 12 publications

(16 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies on mating behaviour in T. vulgaris and T. montandoni (Michalak et al . 1997) in laboratory and garden pond experiments (Michalak & Rafiński 1999) showed strong behavioural isolation between newts from allopatric populations.…”

Section: Discussionmentioning

confidence: 99%

“…If reinforcement is indeed taking place in the area of hybridization between T. vulgaris and T. montandoni, females from sympatric populations should be more discriminating than females from allopatric sites. This prediction can be tested by comparing the results of the previous studies on the strength of sexual isolation between animals from allopatric (Michalak et al . 1997; Michalak & Rafiński 1999) and sympatric populations.…”

Section: Discussionmentioning

confidence: 99%

“…Laboratory and garden‐pond experiments showed that the behavioural sexual isolation between these two species is strong but not complete. In heterospecific matings T. montandoni females appear to be more discriminating than T. vulgaris females (Michalak et al . 1997; Michalak & Rafiński 1999).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nuclear markers, mitochondrial DNA and male secondary sexual traits variation in a newt hybrid zone (Triturus vulgaris × T. montandoni)

Babik

Szymura

Rafínski³

2003

Molecular Ecology

113

View full text Add to dashboard Cite

The smooth and the Montandon's newts (Triturus vulgaris and T. montandoni) are genetically similar sister species with highly divergent male secondary sexual traits involved in complex courtship behaviour. Their parapatric ranges overlap at moderate elevations in the Carpathian Mountains where they hybridize readily. Here we present a detailed study of genetic and morphological variation in populations from the area of sympatry. Analysis of variation at seven nuclear markers, mtDNA and male sexual secondary traits was complemented with an ecological survey of breeding sites characteristics. Extensive hybridization was revealed with back-cross individuals similar to either parental species predominating among hybrids. The hybrid zone exhibited a mosaic pattern: the genetic composition of the populations was correlated only weakly with their geographical position. No association with habitat type was found. Departures from Hardy-Weinberg proportions, significant linkage disequilibria and bimodal distribution of genotypes suggest strongly that assortative mating is an important factor shaping the genetic composition of hybrid populations. The pattern of cytonuclear disequilibria did not indicate much asymmetry in interspecific matings. Changes in the frequency of nuclear markers were highly concordant, whereas mtDNA showed much wider bidirectional introgression with 14% excess of T. montandoni haplotype. We argue that the mosaic structure of the newt hybrid zone results mainly from stochastic processes related to extinction and recolonization. Microgeographical differences in mtDNA introgression are explained by historical range shifts. Since morphologically intermediate males were underrepresented when compared to hybrid males identified by genetic markers, sexual selection acting against the morphological intermediates is implied. We discuss the implications of these findings in the context of reinforcement of prezygotic isolation in newts.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Nuclear markers, mitochondrial DNA and male secondary sexual traits variation in a newt hybrid zone (Triturus vulgaris × T. montandoni)

Babik

Szymura

Rafínski³

2003

Molecular Ecology

113

View full text Add to dashboard Cite

show abstract

“…As a consequence, early generation hybrids are rare in nature (Zieliński et al 2013, 2014). Further, laboratory experiments indicate substantial asymmetric premating isolation, with L. montandoni females being more choosy (Michalak et al 1997; Michalak and Rafiński 1999). So far there has been no information about the strength and form of postzygotic reproductive isolation between L. montandoni and L. vulgaris .…”

mentioning

confidence: 99%

Linkage Map ofLissotritonNewts Provides Insight into the Genetic Basis of Reproductive Isolation

Niedzicka

Dudek

Fijarczyk

et al. 2017

G3 Genes|Genomes|Genetics

View full text Add to dashboard Cite

Linkage maps are widely used to investigate structure, function, and evolution of genomes. In speciation research, maps facilitate the study of the genetic architecture of reproductive isolation by allowing identification of genomic regions underlying reduced fitness of hybrids. Here we present a linkage map for European newts of the Lissotriton vulgaris species complex, constructed using two families of F2 L. montandoni × L. vulgaris hybrids. The map consists of 1146 protein-coding genes on 12 linkage groups, equal to the haploid chromosome number, with a total length of 1484 cM (1.29 cM per marker). It is notably shorter than two other maps available for salamanders, but the differences in map length are consistent with cytogenetic estimates of the number of chiasmata per chromosomal arm. Thus, large salamander genomes do not necessarily translate into long linkage maps, as previously suggested. Consequently, salamanders are an excellent model to study evolutionary consequences of recombination rate variation in taxa with large genomes and a similar number of chromosomes. A complex pattern of transmission ratio distortion (TRD) was detected: TRD occurred mostly in one family, in one breeding season, and was clustered in two genomic segments. This is consistent with environment-dependent mortality of individuals carrying L. montandoni alleles in these two segments and suggests a role of TRD blocks in reproductive isolation. The reported linkage map will empower studies on the genomic architecture of divergence and interactions between the genomes of hybridizing newts.

show abstract

“…, ) and in laboratory tests of behavioral reproductive isolation (Michalak et al. ; Michalak and Rafinski ). Although hybridization and introgression do occur in the hybrid zone and F1 hybrids are highly fertile in the laboratory (M. Niedzicka and W. Babik, unpubl.…”

Section: Discussionmentioning

confidence: 99%

Genomic heterogeneity of historical gene flow between two species of newts inferred from transcriptome data

Stuglik

Babik

2016

Ecology and Evolution

View full text Add to dashboard Cite

The role of gene flow in species formation is a major unresolved issue in speciation biology. Progress in this area requires information on the long‐term patterns of gene flow between diverging species. Here, we used thousands of single‐nucleotide polymorphisms derived from transcriptome resequencing and a method modeling the joint frequency spectrum of these polymorphisms to reconstruct patterns of historical gene flow between two Lissotriton newts: L. vulgaris (Lv) and L. montandoni (Lm). We tested several models of divergence including complete isolation and various scenarios of historical gene flow. The model of secondary contact received the highest support. According to this model, the species split from their common ancestor ca. 5.5 million years (MY) ago, evolved in isolation for ca. 2 MY, and have been exchanging genes for the last 3.5 MY Demographic changes have been inferred in both species, with the current effective population size of ca. 0.7 million in Lv and 0.2 million in Lm. The postdivergence gene flow resulted in two‐directional introgression which affected the genomes of both species, but was more pronounced from Lv to Lm. Interestingly, we found evidence for genomic heterogeneity of interspecific gene flow. This study demonstrates the complexity of long‐term gene flow between distinct but incompletely reproductively isolated taxa which divergence was initiated millions of years ago.

show abstract

TESTS FOR SEXUAL INCOMPATIBILITY BETWEEN TWO NEWT SPECIES, TRITURUS VULGARIS AND TRITURUS MONTANDONI : NO-CHOICE MATING DESIGN

Cited by 12 publications

References 39 publications

Nuclear markers, mitochondrial DNA and male secondary sexual traits variation in a newt hybrid zone (Triturus vulgaris × T. montandoni)

Nuclear markers, mitochondrial DNA and male secondary sexual traits variation in a newt hybrid zone (Triturus vulgaris × T. montandoni)

Linkage Map ofLissotritonNewts Provides Insight into the Genetic Basis of Reproductive Isolation

Genomic heterogeneity of historical gene flow between two species of newts inferred from transcriptome data

Contact Info

Product

Resources

About