‘Hanging out with bugs’ at Scoville

‘Hanging out with bugs’ at Scoville

Scientist Michael LaScaleia talks about caterpillars and plants at the Scoville Memorial Library on Thursday, June 12.

Patrick L. Sullivan

SALISBURY — Michael LaScaleia, a scientist with the Arnold Arboretum in Boston, took an audience through the strange and wonderful world of caterpillars and invasive plants at the Scoville Memorial Library Thursday, June 12.

The talk was sponsored by the library and the Salisbury Association Land Trust.

LaScaleia, with infectious enthusiasm, gave a precis of his academic career. A highlight was a study of dung beetles.

“Dung beetles play a huge role in the African savannah, because there is so much, um, poop” he said.

He showed a photo of himself during the dung beetle phase, looking somewhat grimy and disheveled.

He said it was a critical experience.

“I thought, this is my thing. I love being dirty. I love hanging out with bugs.”

Lately he has been working on why, exactly, invasive plants succeed in New England.

Viburnum dilatatum (aka linden arrowood) is native to East Asia and was introduced in this country in the early 19th century.

“We already had a very similar plant — Viburnum acerifolium” (aka maple-leaved arrowood).

LaScaleia wanted to know why caterpillars will eat the native plant but not the exotic version.

He provided a brief and moving picture of the plight of the caterpillar.

“Even caterpillars don’t want to be caterpillars.”

Hence their eternal struggle to turn into moths or butterflies.

“Birds eat them. Also spiders, wasps and ants,” he continued.

“They have a long development cycle. They have to shed their own skin, and if they can’t they asphyxiate.”

“It’s truly awful.”

LaScaleia is testing the Enemy Release Hypothesis. The gist of this is when a plant is introduced to a new, faraway location, such as New England from East Asia, it leaves behind the predators that kept it in check on its home turf. In the new location, the native predators (such as caterpillars) aren’t much interested in the new arrivals, which allows the plants to spread, causing consternation and dismay.

Scientists are now working on why specialist caterpillars won’t eat invasives. Specialist caterpillars are picky and only eat specific plants, as opposed to generalist caterpillars, which are broad-minded and will eat almost anything.

If the goal is controlling the spread of invasive plants, can these specialist caterpillars be assisted in developing an appetite for invasives?

One idea is to take advantage of the tendency of invasive Japanese barberry to start growing earlier in the spring than its native counterpart by developing a caterpillar that also gets going earlier in the spring.

After LaScaleia wrapped up the talk, he and a group hiked over to the Land Trust’s Vincent Preserve for some field work.

Latest News

Backgammon series begins at Hotchkiss Library of Sharon
Backgammon lessons kicked off Wednesday, Aug. 13, at The Hotchkiss Library. Instructor Roger Lourie works with Pam Jarvis of Sharon, while his wife, Claude, assists at a second board with Janet Kaufman of Salisbury.
Leila Hawken

In light of rising local interest in the centuries-old game of Backgammon, Wednesday afternoon backgammon instruction and play sessions are being offered at The Hotchkiss Library of Sharon. The first such session was held on Wednesday, Aug. 13, attracting two enthusiastic participants, both of whom resolved to return for the weekly sessions.

Expert player and instructor Roger Lourie of Sharon, along with his equally expert wife, Claude, led the session, jumping right into the action of playing the game. Claude chose to pair with Janet Kaufman of Salisbury, a moderately experienced player looking to improve her skills, while Lourie teamed himself with Pam Jarvis of Sharon, who was new to the game.

Keep ReadingShow less
Dugazon opens in Sharon, blending Southern roots with global style

Pantry essentials at Dugazon

Jennifer Almquist

You are invited to celebrate the opening of Dugazon, a home and lifestyle shop located in a clapboard cottage at 19 West Main Street, the former site of The Edward in Sharon. The opening is Wednesday, Aug. 27 at 11 a.m.

After careers in the world of fashion, Salisbury residents Bobby Graham and his husband, Matt Marden, have curated a collection of beautiful items that reflect their sense of design, love of hospitality, and Graham’s deep Southern roots. Dugazon is his maternal family name.

Keep ReadingShow less
Scrap to sculpture: Matt Wabrek of Birch Lane Rustics
Matt Wabrek creates sculpture from found scrap metal and wood.
L. Tomaino

A giant fish that sold at Trade Secrets, the high-end home and garden show held at Lime Rock Park, is just one of the creatures that Matt Wabrek of Birch Lane Rustics in North Canaan, creates by welding old tools and pieces of metal together.

The fish was so well liked by browsers at Trade Secrets that he received commissions for others.

Keep ReadingShow less