This article is part of our Fly Control Awareness Month brought to you by Absorbine.
Are you preparing your arsenal for the summer fight against flies? Arm yourself with knowledge, and some interesting facts about these small, but pesky creatures.
Fact: Disease Carriers
Strangles is just one of many diseases that flies can transmit—ranging from fly-bite allergies, conjunctivitis, and local irritation to life-threatening viral diseases like equine infectious anemia. For the record, however, we can’t blame flies for everything. Other diseases, such as West Nile virus, are transmitted by mosquitoes. Rabies is most commonly passed directly in saliva from a bite.
Fact: Non-Weary Travelers
Flies go where the food is, so an urban house fly doesn’t have to travel far to find a meal. Plentiful trash that’s close at hand means the typical urban house fly doesn’t travel much farther than 1,000 feet on any given day. But if you move that house fly to the country? He may travel 7 miles—or more—to find a good source of manure. What does that mean for you? Keep manure picked up around your farm, and your flies may decide to move away. Interestingly, if you compost manure properly it’ll actually repel flies because it generates too much heat to make them happy.
Fact: Life Span
Flies live longer than you may think. The average lifespan is 30 days or more for most fly species. Some, like horseflies, can live for years. The total lifecycle of a fly has four stages: egg, larvae, pupa, and adult. Under ideal conditions, an egg can hatch in as few as eight hours to become a larvae—commonly known as a maggot. Maggots feed on manure, rotting food, and other filth, and must shed their outer layers or “molt” before they pupate (develop fly-like characteristics such as legs and wings). As a general rule, all stages of the fly’s life cycle thrive when temperatures are warm and food is available. They’ll pass through each stage more efficiently, and adults will live longer (meaning they can lay more eggs). That’s why tending to manure and garbage is essential for keeping flies at bay. It also explains why warm spring weather typically marks the beginning of your annual War on Flies.
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Fact: Moving at the Speed of Fly
A fly’s wings beat as fast as 1,000 times per minute. That’s what creates that buzzing sound you hear. In spite of that, it’s hard to believe that flies don’t move all that fast. In fact, the topflight speed for a typical fly is around 4 to 5 miles per hour (a brisk walking pace). So why are they so hard to kill? They’re incredibly acrobatic. When you’re trying to chase down a fly, outrunning him shouldn’t be a problem. Outsmarting him by predicting the direction he’ll move is the challenge. Picture this scenario: You’re riding your horse, when he starts being chased by a determined bot fly. If you’re like me, you’ve probably dismounted on a few occasions so you could chase the fly around in circles in an attempt to swat it. Frustrating, right? Next time, consider breaking into a gallop (or even a brisk trot) to escape the annoying pest.
Fact: Reproducing Like…Flies?
A female fly typically may lay as few as 75 to 100 eggs per “batch.” That’s only the beginning of the story. A female will begin laying eggs 10 to 12 days after she matures. She can lay five or six batches in her lifetime. These eggs will hatch in less than a day. A group of scientists calculated how many flies would accumulate over time if a single pair were allowed to breed completely unchecked (i.e., all of their offspring survived). The results were astonishing. In just five months, that pair of flies would result in 191,010,000,000,000,000,000 family members. That’s enough to cover the entire surface of the earth, several meters deep. So when considering your War on Flies, pay particular attention to their breeding grounds. Flies like to breed in moist, dark areas, ideally surrounded by trash or manure. By picking up trash, cleaning up manure, and taking steps to control mud, you’ll minimize their ability to reproduce.
Fact: The Eyes Have It
Flies have compound eyes, made up of thousands of tiny individual lenses called ommatadia. This provides a very wide field of vision. A fly can see 360 degrees around his body at all times. Why is this important for your War on Flies? No matter the direction, flies can see you coming when you try to swat them. Add to this their lightning-fast reflexes (they see you coming and make a decision about which way to jump within 100 milliseconds of when you first move), and it’s easy to understand why it’s hard to kill a fly. If you want to be successful, you must plan ahead. Researchers studying fly reactions suggest planning which way a fly is most likely jump ahead of time (often backward) and swat accordingly.
Fact: Feeding Frenzy
A fly sucks up his food in liquid form through a proboscis. This is a tubular extension of the mouth similar to a straw. So how does he feed on solids? He uses a combination of saliva and stomach contents (“fly vomit”) to liquefy the surface so he can slurp it up. Disgusting, right? This fun fact might not help you wage your War on Flies, but it should provide plenty of motivation for keeping them away.
Concerns About Biting Flies
Deer flies and horse flies are known for their painful bites, as they feed on blood to survive. These bites not only cause discomfort but also pose a serious risk of spreading diseases like equine infectious anemia.
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Fascinating Fly Facts
Flies are incredibly agile creatures, capable of hovering, flying in all directions, and even jumping backward when threatened. They possess small structures called “halteres” that aid in their acrobatics. Despite appearing to fly randomly, flies actually follow a specific flight pattern that helps them locate food sources by following odors. This pattern also helps them evade predators, showcasing their remarkable agility and reflexes.
Choosing the Right Fly Spray
Effective fly repellents can help control fly populations. However, resistance to insecticides can vary based on location and fly populations, requiring a trial-and-error approach to find the most effective repellent for your horse. It’s important to have multiple options available, as the efficacy of a repellent may differ depending on the environment. Despite efforts to control flies, their presence is inevitable around horses.
The Benefits of Flies
Flies, despite their negative reputation, play a vital role in the ecosystem. Their feeding habits aid in decomposition, with maggots helping break down decaying matter. In medical settings, maggots are used to treat infected wounds. Flies also contribute to pollination and prey on pests like aphids. Additionally, flies serve as a food source for birds, bats, and fish, highlighting their importance in the food chain.