Data from: Naturally occurring hybrids of coral reef butterflyfishes have similar fitness compared to parental species

Stefano R. Montanari, Jean-Paul A. Hobbs, Morgan S. Pratchett, Line K. Bay & Lynne Van Herwerden
Hybridisation can produce evolutionary novelty by increasing fitness and adaptive capacity. Heterosis, or hybrid vigour, has been documented in many plant and animal taxa, and is a notable consequence of hybridisation that has been exploited for decades in agriculture and aquaculture. On the contrary, loss of fitness in naturally occurring hybrid taxa has been observed in many cases. This can have negative consequences for the parental species involved (wasted reproductive effort), and has raised concerns...
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