You Do Need power plug adapter while traveling from Israel to Mauritius.

Here is Why You Need An Adapter

The outlet and plug type used in Mauritius are C and G and in Israel are C and H. This is how they look like.

Israel

In Israel, outlets of type C and H are in use.

Type C

Type H

Mauritius

In Mauritius, outlets of type C and G are in use.

Type C

Type G