Modelling interspecific hybridization with genome exclusion to identify conservation actions: the case of native and invasive <i>Pelophylax</i> waterfrogs

Quilodrán, Claudio S.; Montoya‐Burgos, Juan I.; Currat, Mathias

doi:10.1111/eva.12245

Cited by 30 publications

(36 citation statements)

References 54 publications

(116 reference statements)

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“…To the best of our knowledge no native species have been lost from any specific location despite destabilising hybridisation favouring the alien taxon (e.g., Quilodrán et al 2015, Leuenberger et al 2014. If strictly following the guidelines by Hawkins et al (2015), only species of which F1 parents produce sterile offspring could have MR impacts.…”

Section: Discussionmentioning

confidence: 95%

Impact assessment with different scoring tools: How well do alien amphibian assessments match?

Kumschick¹,

Vimercati²,

Villiers³

et al. 2017

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Classification of alien species' impacts can aid policy making through evidence based listing and management recommendations. We highlight differences and a number of potential difficulties with two scoring tools, the Environmental Impact Classification of Alien Taxa (EICAT) and the Generic Impact Scoring System (GISS) using amphibians as a case study. Generally, GISS and EICAT assessments lead to very similar impact levels, but scores from the schemes are not equivalent. Small differences are attributable to discrepancies in the verbal descriptions for scores. Differences were found in several impact categories. While the issue of disease appears to be related to uncertainties in both schemes, hybridisation might be inflated in EICAT. We conclude that GISS scores cannot directly be translated into EICAT classifications, but they give very similar outcomes and the same literature base can be used for both schemes.

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Section: Discussionmentioning

confidence: 95%

Impact assessment with different scoring tools: How well do alien amphibian assessments match?

Kumschick¹,

Vimercati²,

Villiers³

et al. 2017

View full text Add to dashboard Cite

show abstract

“…We improved a previously published model of interspecific hybridization in which hybrids are unfertile or fertile but do not undergo chromosomal recombination during gametogenesis (Quilodrán et al. , ) (Supporting Information).…”

Section: Methodsmentioning

confidence: 99%

“…The parameter values are based on a previously published case study of Western Europe water frogs that undergo hybridization with genome exclusion (Quilodrán et al. ). We took from that study the parameter values corresponding to Pelophylax ridibundus but did not overlap generations (annual survival of adults set to zero) (Table ).…”

Section: Methodsmentioning

confidence: 99%

“…Hybridization with genome exclusion may result in the extinction of 1 parental species through progressive replacement of that individuals genetic material with that of the other parent, a process referred to as demographic flow (Quilodrán et al. ).…”

Section: Introductionmentioning

confidence: 99%

“…In a recent study, we used an original model to assess the conditions under which interspecific hybridization can lead to population extinction; the results provide a means to evaluate the efficiency of conservation actions (Quilodrán et al. ).…”

Section: Introductionmentioning

confidence: 99%

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Effect of hybridization with genome exclusion on extinction risk

Quilodrán

Currat

Montoya‐Burgos

2018

Conservation Biology

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Human-induced habitat changes may lead to the breakdown of reproductive barriers between distantly related species. This phenomenon may result in fertile first-generation hybrids (F ) that exclude the genome of one parental species during gametogenesis, thus disabling introgression. The species extinction risk associated with hybridization with genome exclusion is largely underappreciated because the phenomenon produces only F hybrid phenotype, leading to the misconception that hybrids are sterile and potentially of minor conservation concern. We used a simulation model that integrates the main genetic, demographic, and ecological processes to examine the dynamics of hybridization with genome exclusion. We showed that this mode of hybridization may lead to extremely rapid extinction when the process of genome exclusion is unbalanced between the interbreeding species and when the hybridization rate is not negligible. The coexistence of parental species was possible in some cases of asymmetrical genome exclusion, but show this equilibrium was highly vulnerable to environmental variation. Expanding the exclusive habitat of the species at risk allowed its persistence. Our results highlight the extent of possible extinction risk due to hybridization with genome exclusion and suggest habitat management as a promising conservation strategy. In anticipation of serious threats to biodiversity due to hybridization with genome exclusion, we recommend a detailed assessment of the reproductive status of hybrids in conservation programs. We suggest such assessments include the inspection of genetic content in hybrid gametes.

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No wonder, it is a hybrid. Natural hybridization between Jacobaea vulgaris and J. erucifolia revealed by molecular marker systems and its potential ecological impact

Gawrońska,

Marszałek,

Kosiński

et al. 2023

Ecology and Evolution

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Progressive changes in the environment are related to modifications of the habitat. Introducing exotic species, and interbreeding between species can lead to processes that in the case of rare species or small populations threatens their integrity. Given the declining trends of many populations due to increased hybridization, early recognition of hybrids becomes important in conservation management. Natural hybridization is prevalent in Jacobaea. There are many naturally occurring interspecific hybrids in this genus, including those between Jacobaea vulgaris and its relatives. Although Jacobaea erucifolia and J. vulgaris often co‐occur and are considered closely related, apart from the few reports of German botanists on the existence of such hybrids, there is no information on research confirming hybridization between them. Morphologically intermediate individuals, found in the sympatric distributions of J. vulgaris and J. erucifolia, were hypothesized to be their hybrids. Two molecular marker systems (nuclear and chloroplast DNA markers) were employed to test this hypothesis and characterize putative hybrids. Nuclear and chloroplast DNA sequencing results and taxon‐specific amplified fragment length polymorphism (AFLP) fragment distribution analysis confirmed the hybrid nature of all 25 putative hybrids. The AFLP patterns of most hybrids demonstrated a closer relationship to J. erucifolia, suggesting frequent backcrossing. Moreover, they showed that several individuals previously described as pure were probably also of hybrid origin, backcrosses to J. erucifolia and J. vulgaris. This study provides the first molecular confirmation that natural hybrids between J. vulgaris and J. erucifolia occur in Poland. Hybridization appeared to be bidirectional but asymmetrical with J. vulgaris as the usual maternal parent.

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Modelling interspecific hybridization with genome exclusion to identify conservation actions: the case of native and invasive Pelophylax waterfrogs

Cited by 30 publications

References 54 publications

Impact assessment with different scoring tools: How well do alien amphibian assessments match?

Impact assessment with different scoring tools: How well do alien amphibian assessments match?

Effect of hybridization with genome exclusion on extinction risk

No wonder, it is a hybrid. Natural hybridization between Jacobaea vulgaris and J. erucifolia revealed by molecular marker systems and its potential ecological impact

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