Gleanings of the Week Ending March 12, 2022

The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Why soil is a surprisingly noisy place – Wow! A whole new way of studying soil…listening to it.

Gas flares tied to premature deaths – A study done by Rice University environmental engineers with data from North Dakota and Texas. There are currently no limits to flaring, unfortunately. Why can’t we use the gas productively? It bothers me when we hear that we need more fossil fuels to observe the way the industry still is so wasteful and polluting.

Dying for makeup: Lead cosmetics poisoned 18th century European socialites in search of whiter skin – I had heard of lead makeup before…but never is this detail.

Top 25 birds of the week: forest birds – The only one of these that appears in the forest behind our house in Maryland is the Tufted Titmouse.

Study questions the role of vitamin D2 in human health but its sibling, vitamin D3, could be important for fighting infections – The labelling on foods fortified with Vitamin D does not say which type is used – hopefully it is D3. The supplemental Vitamin D I take is definitely D3.

The Prairie Ecologist – Photos of the Week – February 26, 2022 – Winter photography….it’s about over for us. Daffodils are up!

What is the best age to learn to read? – There is more variability that I realized…generally between 4 and 7. There is growing consensus that there is no reason to rush it. Learning language is key and often older children learn to read faster because their spoken language skills are greater.

Effects of noise on marine life – The study was focused on turtles and observed noise-induced hearing loss (sometimes temporarily) which hampers their ability to detect predators, communication, navigation, etc.

Rash-causing moths are spreading in Maine because of climate change – Browntail moths (native to Europe). I thought when I saw the headline that it might be about the saddleback caterpillar which is native to North America and has stinging spines that cause a painful rash. We had a specimen in the Brookside Gardens Wings of Fancy exhibit back in July/August 2018.

Study of algae in Acadia National Park lakes shows recovery from acidification – A success story…the Clean Air Act Amendments enacted in the 1900s are making a difference!

Brookside Wings of Fancy Caterpillars – August 2018

The caterpillars at Brookside Gardens Wings of Fancy exhibit are maturing….getting ready for cooler temperatures. On the walk up the ticket taker table, the last of the milkweed tussock moth caterpillars are finishing their leaves and pupating. A large number had to be moved to milkweed plants further from the caterpillar house so that the Monarch caterpillars would be on view to the visitors waiting to enter the caterpillar house of the exhibit.

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The caterpillar house in August featured a white case (for the saddleback caterpillars) and then places for 3 pots (starring cecropia moth and monarch butterfly caterpillars).

The saddleback caterpillars grew bigger in August. I talked to at least two people that has been stung by them in their gardens!

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The cecropia moth caterpillars made cocoons one my one over the course of the month. Yesterday there was only one caterpillar left on the black cherry – and it had been the runt of the caterpillars from the beginning; it’s catching up now.

There is a spicebush tree in a pot next to the black cherry where the caterpillars have moved to make their cocoons.

The monarch caterpillars have been the most fun to watch. I was in the caterpillar house once just after a caterpillar shed its skin.

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They alternate between resting and eating….mostly eating.

When they are big enough to pupate, they try to leave the host plant. One started the walk-about when I was volunteering in the caterpillar house (round and round the pot looking for a way off) and we moved it to a portable mesh cube where it made its J and then chrysalis.

Outside there were many Monarch chrysalises on the plants and the structure of the caterpillar house. They always look like jade pendants to me.

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Saddleback Caterpillars

I had heard about saddleback caterpillars in the training for field trip hikes with the Howard County Conservancy…but only seen them in pictures. One of the surprises last Saturday when I went to Brookside Gardens for a Wings of Fancy shift was the news that the caterpillars had been found in the part of the conservatory not used for the exhibit; they were feeding on canna plants. So – the staff had put them with the plant in a closed case in the caterpillar house giving me and everyone that visited the exhibit an opportunity to see them without the pain that comes from touching them (their bristles have venom!) by accident. On Monday morning, my husband I returned to try to photograph them through the glass of the case. They’d almost doubled in size between Saturday morning and Monday morning! My camera did an OK job – not fabulous but they are clearly saddleback caterpillars.

My husband got the better picture.

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If you are interested about this and other poisonous caterpillars, Nancy Goor has an informative page with great pictures on her web site.