Choosing the right species in research

Area of Science:

• Biomedical Research
• Animal Model Selection
• Scientific Methodology

Background:

• Selecting an appropriate animal species is a critical step in designing valid and ethical animal studies.
• Traditional criteria such as phylogenetic group and sentience are often insufficient for guiding species selection in biomedical research.

Purpose of the Study:

• To examine and identify scientifically relevant criteria for selecting appropriate animal species in biomedical research.
• To propose a framework for justifying animal species selection based on research needs.

Main Methods:

• Literature review and critical analysis of existing criteria for animal species selection.
• Evaluation of the utility of phylogenetic group and sentience as selection criteria.
• Identification and discussion of alternative, more applicable criteria.

Main Results:

• Phylogenetic group and sentience are not considered useful criteria for selecting animal models in biomedical research.
• Useful criteria for species selection include disease susceptibility, behavioral relevance, experimental compatibility (size), existing data, species specificity, reproductive characteristics (intergenerational interval), human similarity, and adherence to guidelines.

Conclusions:

• Investigators should prioritize scientifically justifiable criteria over less relevant ones when selecting animal species.
• A robust justification for species selection enhances the validity and reproducibility of animal study findings.