# Morphometric dataset of Varanus salvator for non-invasive sex identification using machine learning

**Authors:** Ariff Azlan Alymann, Imann Azlan Alymann, Song-Quan Ong, Mohd Uzair Rusli, Abu Hassan Ahmad, Hasber Salim

PMC · DOI: 10.1038/s41597-024-03172-9 · Scientific Data · 2024-04-05

## TL;DR

This paper introduces a dataset of morphometric measurements for Varanus salvator to enable non-invasive sex identification using machine learning.

## Contribution

The paper presents a new dataset and demonstrates machine learning models for non-invasive sex determination in Varanus salvator.

## Key findings

- Six machine learning models were trained and tested to validate the dataset's utility for sex prediction.
- The dataset includes morphometric measurements like weight, skull size, and tail length from confirmed-sex individuals.
- The dataset offers a non-invasive alternative to traditional invasive methods for sex identification in V. salvator.

## Abstract

Reliable sex identification in Varanus salvator traditionally relied on invasive methods like genetic analysis or dissection, as less invasive techniques such as hemipenes inversion are unreliable. Given the ecological importance of this species and skewed sex ratios in disturbed habitats, a dataset that allows ecologists or zoologists to study the sex determination of the lizard is crucial. We present a new dataset containing morphometric measurements of V. salvator individuals from the skin trade, with sex confirmed by dissection post- measurement. The dataset consists of a mixture of primary and secondary data such as weight, skull size, tail length, condition etc. and can be used in modelling studies for ecological and conservation research to monitor the sex ratio of this species. Validity was demonstrated by training and testing six machine learning models. This dataset has the potential to streamline sex determination, offering a non-invasive alternative to complement existing methods in V. salvator research, mitigating the need for invasive procedures.

## Linked entities

- **Species:** Varanus salvator (taxon 62051)

## Full-text entities

- **Species:** Varanus salvator (water monitor, species) [taxon 62051], Zootoca vivipara (common lizard, species) [taxon 8524]

## Full text

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## References

14 references — full list in the complete paper: https://tomesphere.com/paper/PMC10997747/full.md

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Source: https://tomesphere.com/paper/PMC10997747