Efforts to reduce the Island deer herd, and an apparent spread of lone star ticks, topped a presentation this week.

Oak Bluffs selectmen Tuesday decided to stay the course after revisiting their decision to back an expanded deer hunting season on the Island.

Amid growing concern about Lyme disease, selectmen in Edgartown, Aquinnah and West Tisbury this week agreed to join the call for adding another two-week deer hunt next January.

Selectmen in Oak Bluffs and Chilmark last night threw their full support behind a plan to add a second two-week shotgun season for deer in January next year.

The spread of disease-carrying ticks on Martha’s Vineyard is a public health crisis, a biologist and longtime Island physician said this week.

A recent survey on the Cape has revealed Powassan, a potentially fatal disease carried by deer ticks. Despite a growing list of tick-borne diseases in the region, there are no plans for tick surveillance on the Vineyard.