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Tag Archive | "Fireflies"

Flashing Fireflies

Ranger Steve Mueller

It was a dark night with a hidden moon. During that special time, the moon and the sun are on the same side of the Earth. It is a time the moon is nowhere to be seen and is a miraculous time to enjoy the blackness of night. 

From the back porch instead of thinking about the moon, fireflies captured my attention. I drifted to my childhood, the time when my kids were young, and now with anticipation for exploring flashing lightening bugs with grandsons. Fireflies and lightening bugs are neither flies nor bugs. They are beetles with hard wing covers they pull forward to expose membranous wings for flight. The wing covers, called elytra, are dark with orange markings but they are not seen at night. What excites us in the dark is their flashing of green, yellow, or red. 

With dusk dimming on warm nights, a firefly light show begins. I enjoy their fireworks more than the beautiful noisy fireworks we set off from cannons. For me, human fireworks are best enjoyed from a distance where their explosions do not ruffle my senses like the bombs of war. Fireflies blink silently to attract mates. While they are busy searching for one with whom to make love, I count flash frequency. Each species has a unique flash speed that speaks like Morse code. They do not talk in words but signal with light codes.

My mind drifts to a favorite “Sesame Street” character – the Count. He loved to count. With my kids we counted the flashes of these night insects. We would count how many were flying. In darkness they would disappear but we would try to determine their direction of flight. It was a wonderful way to explore the outdoor world. 

As a child, sitting and watching was more than could be tolerated. Chasing and capturing them in a jar was essential. I recall on a boy scout camping trip some of the scouts felt it necessary to catch many. Once they had a large number in a jar, they had to determine what to do with them. That was a temporary dilemma. My dad was a scoutmaster and they thought it would be fun to release them in his tent. When he left the campfire to go to bed he would discover his sleeping bag full of burning coals or so he would think. What fun for the scouts!

There is a festival at Great Smokey Mountain National Park in May that attracts people from great distances to see the synchronized flashing. It is not necessary to travel far. The show occurs locally from early June through July. Urban yards might not be a suitable stage but an evening drive with kids or grandkids can be rewarding. 

Fireflies need fields and forests near marshes or damps areas. They are declining worldwide for various reasons not completely understood. Some things are known. They do not move to nearby habitats when human development expands to replace their home. They simply die a local extinction. Our continuously growing population is pushing them off the Earth. Stabilizing our population to share creation will help other species survive. Beside habitat loss, light pollution from too much yard light along with use of pesticides and herbicides are causing declines. We can provide creation care for fireflies for their sake or for our own. 

Scientists found firefly luciferase that produces the bioluminescence can be used as a marker to detect blood clots. It helps identify tuberculosis virus cells. It aids the monitoring of hydrogen peroxide levels that identify cancer and diabetes. We might think nature is expendable with no consequences for us but it is not. We needed to collect the beetles for their chemical but have learned to synthesis it. We would not know its benefits without these insects. If we let other species disappear, we will never discover their value when a need arises. Maybe a cure for coronavirus or other new diseases is hidden in plants or animals but will disappear with the massive extinctions of life forms that is occurring. 

Protectfields, forests and marshes. Fireflies thrive as larvae in rotting wood and forest leaf litter at the margins of ponds and streams. This is a good year for them with the rain we received.  Avoid over cleaning yards and gardens. Immaculate yards spell death to this valuable community member. They help us by feeding on slugs and snails. Avoid using pesticides and herbicides in yards and gardens. Fireflies hide by day in lawns and wild portions of the yard. Incorporate taller grasses in your landscaping. Look at yards with fireflies and determine how they differ from those without.

Firefly flashes make them a charismatic species and their declining abundance is eliminating a great joy in life. They call public attention with their rapid response to environmental changes. They are a good bioindicator identifying mismanagement of the world for which we should take care responsibility. 

Natural history questions or topic suggestions can be directed to Ranger Steve (Mueller) at odybrook@chartermi.net – Ody Brook Nature Sanctuary, 13010 Northland Dr. Cedar Springs, MI 49319 or call 616-696-1753.

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Sparklers in the air

Firefly (species unknown) captured in eastern Canada. The top picture is taken with a flash, the bottom with only the self-emitted light. Photo by Emmanuelm at English Wikipedia, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=10418847

Ranger Steve Mueller

By Ranger Steve Mueller

A week ago was the first night I noticed sparklers in the air this year. Anticipate them with excitement and joy. There are unanswered questions about the lives of those that surround us.

I grew up with yellow/orange sparklers flying in eastern Michigan. Here I encounter green sparklers. Perhaps you know what I am writing about. Did you grow up with yellow or green fireflies? “Sparklers” or fireflies are names of convenience. It is more important that our kids, grandkids and future generations experience them. Their populations are in decline worldwide.

I usually do not go outside after dark to sit on the Ody Brook Nature Sanctuary bench in the Big Field. It was a pleasantly warm night with no mosquitoes. Late May and June is usually when I dress appropriately to sit out after dark or find ways to be in areas with few mosquitoes.

As a boy scout summer camp counselor where scouts played Capture the Flag, I was stationed to keep scouts from wandering too far. At ground level, mosquitos swarmed me. I climbed a tree and sat for the hour 20 feet up, where only an occasional mosquito arrived. They remain close to the ground feeding on mice and deer.

Fireflies are like nearly all insects. They are not a pest to humans, plants or animals we use. They even help us. It is unfortunate people kill beneficial insects to eliminate a few we find harmful.

Use strategies to minimize biting insects without killing the great majority of other insects. Last week an article was in the paper promoting a company that will kill insects in your yard with chemicals. That reduces healthy living conditions for mammals, birds, predatory insects, pollinators and humans. Have you wondered why signs are posted “stay off the lawn” after treatment? The chemicals are harmful to people and most life.

Fireflies, bumble bees, soldier beetles, ants, honey bees, butterflies, crane flies, carrion beetles, and other insect species that keep nature niches healthy are killed. It is better to avoid chemicals used to create lawns that are picture-perfect carpets devoid of weeds and insects. There are strategies to comfortably live with insects.

Enjoy exploring your surroundings to discover the lives of close neighbors in your yard. Fireflies are not flies. When we see the word fly connected with a prefix such as Butterfly, fishfly, and dragonfly, realize those are not flies. Things like bee fly, robber fly, and housefly are flies.

Flies comprise one classification Order. Entomologists use classification when working to keep food production, forest protection, and human safety secure. Integrated Pest Management is primary for reducing chemical use. Question companies promoting chemical use. Many use strategies to reduce chemical use. Avoid fertilizers, herbicides, and insecticides and have a more natural yard that supports life instead of reducing it.

Fireflies, also called lightning bugs, are beetles. Realize they are not flies or bugs. Bugs are an Order including stinkbug, milkweed bug, and giant water bug. Lightning bugs flash through the air entertaining us. More importantly, they flash to attract mates for reproduction. Help them by maintaining a healthy environment where they will find chemical free food, water, and shelter in suitable living space. Larvae are carnivorous feeding on smaller insects, snails and slugs. Allow them to eat insects and snails in your garden for free instead of killing them with pesticides. Adults feed sparingly and are short-lived. They mate, lay eggs and die.

Fireflies are declining worldwide so use strategies to help them survive. Avoid use of fertilizers, pesticides and herbicides. Keep lawn mowing infrequent and to minimum size to enjoy the wildflowers that show up in the lawn. Add native trees and shrubs and avoid planting exotic species that few insects can use. Leave some dead leaves and thatch on the ground to hold moisture. A moist habitat is essential for “sparkler’s” survival. Turn off outdoor lights interfering with firefly behavior. You will save energy and money while helping save fireflies.

Natural history questions or topic suggestions can be directed to Ranger Steve (Mueller) at odybrook@chartermi.net – Ody Brook Nature Sanctuary, 13010 Northland Dr. Cedar Springs, MI 49319 or call 616-696-1753.

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