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Hybrid Zones

Hybrid Zones

Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.

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Updated: May 2, 2026

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

Target Capture Sequencing Provides Insights Into Hybridogenetic Water Frogs.

Lisanne van Veldhuijzen^1,2, Maciej Pabijan³, Tariq Stark⁴

¹Institute of Biology Leiden Leiden University Leiden the Netherlands.

Ecology and Evolution

|May 1, 2026

Summary

This summary is machine-generated.

Targeted DNA sequencing using FrogCap effectively distinguished European water frog species and revealed complex genetic interactions. This method aids in understanding their evolution and managing invasive populations.

Keywords:

amphibians hybridization sequence capture triploid

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Last Updated: May 2, 2026

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Cell-Lineage Guided Mass Spectrometry Proteomics in the Developing Frog Embryo

Cell-Lineage Guided Mass Spectrometry Proteomics in the Developing Frog Embryo

Published on: April 21, 2022

Area of Science:

Genomics
Evolutionary Biology
Herpetology

Background:

European water frogs (Pelophylax) exhibit a complex hybridogenetic system and face threats from invasive populations.
Previous genomic studies were limited, hindering research into their evolutionary history and conservation.

Purpose of the Study:

To evaluate the efficacy of the FrogCap target capture bait set for genomic analysis in Pelophylax water frogs.
To address key questions regarding species identification, ploidy levels, and interspecific gene flow within the genus.

Main Methods:

Application of the FrogCap target capture bait set to three Dutch Pelophylax taxa: P. ridibundus, P. lessonae, and P. esculentus.
High-coverage genomic data acquisition and analysis for species differentiation, ploidy determination, and gene flow detection.

Main Results:

High-quality target capture data successfully differentiated the three Pelophylax taxa.
Significant introgression of P. lessonae mitochondrial DNA (mtDNA) into P. ridibundus was confirmed.
Target capture efficiently identified polyploidy in P. esculentus and determined ancestral contributions.

Conclusions:

Targeted sequence capture with FrogCap is a powerful tool for unraveling the intricate evolutionary history of Pelophylax water frogs.
This method facilitates genomic studies, including the investigation of hybridogenesis and the monitoring of invasive frog populations.