Measuring Heart Beats of Ant.

This is an interesting question!

Generally it's the insect's abdomen that can be used to measure its heart rate. Ants have an open circulatory system (unlike, earthworms for example). This makes it harder to measure because they have multiple hearts all sort of functioning at the same time.

We have what’s known as a closed circulatory system, which means that our blood flows through specialized tubes—namely blood vessels and veins. Our heart functions as a pump to move blood through these tubes to our organs.

In an open circulatory system, however, there aren’t any “tubes” to deliver the fluid. It enters and departs the heart directly to and from the body cavity. In insects, this is very elongated.



https://www.ncbi.nlm.nih.gov/pubmed/12443919