Tigriopus Californicus Hybrid Viability QTL Mapping Data

Dryad hosts this dataset from a quantitative trait loci (QTL) mapping study of reciprocal F2 hybrids between two strongly differentiated populations of the copepod Tigriopus californicus. The study used a saturated linkage map spanning all 12 autosomes and the mitochondrion to investigate genetic incompatibilities, finding the strongest deleterious interaction was mito-nuclear. Research by Brad R. Foley found viability problems were stronger in males and that trigenic interactions were substantially more frequent than digenic ones in this highly divergent cross.

Use Cases

• Analyze QTL for hybrid viability using adult sex ratio data to investigate sex-specific effects.
• Compare the strength of mito-nuclear interactions against nuclear-nuclear interactions in hybrid breakdown.
• Examine the frequency of trigenic versus digenic genetic incompatibilities in a system lacking heteromorphic sex chromosomes.
• Study the relationship between metabolic rate and male-specific hybrid viability problems using mapped trait data.

Strengths

• Data is derived from a saturated linkage map covering all 12 autosomes and the mitochondrion.
• Study design includes reciprocal F2 hybrids between two strongly differentiated populations, allowing for robust comparison.
• Findings quantify that trigenic interactions were substantially more frequent (>6x) than digenic interactions.

Limitations

• Dataset scope is limited to two specific populations of Tigriopus californicus, restricting generalizability.
• The raw data structure, column details, and sample size are not described in the provided metadata.
• As a study of a non-standard model organism, direct comparison to genetics of speciation in classic models may require careful interpretation.

Provenance

Source

Dryad digital repository.

Collection Method

Quantitative trait loci (QTL) mapping conducted on reciprocal F2 hybrids using a saturated genetic linkage map.

Freshness

Last updated in June 2020.