Connect with us

Michigan

When will the mayflies arrive?

Published

on

When will the mayflies arrive?


Temperature, wind and other environmental factors control the timing and number of mayflies that reach the shores of Lake Erie and Lake St. Clair.

In early summer along the western shores of Lake Erie and Lake St. Clair many people wonder, when will the mayflies (also known as fish flies) arrive and how many will there be this year?

First, a few key facts about mayflies. Mayflies are aquatic insects that live most of their lives in the water. Mayflies overwinter in sediments at the bottom of lakes and streams. Pollution and lack of oxygen in bottom sediments killed off Lake Erie’s mayflies in the early 1950s, and they remained rare for forty years. Mayfly populations began to rebound in the early 1990s and reached their density management goal 1997, which means there are enough to support other species.

Mayflies emergence in great numbers is part of their defense mechanism so that not all of them will be eaten and some can reproduce. Photo: Todd Marsee, Michigan Sea Grant.

Mayflies are an important food for birds and fish such as yellow perch. The presence of mayflies is considered an indicator of good water quality. Mayflies emerge from the water so that they can mate and lay eggs on the water surface. The eggs will later fall into the bottom sediments. Find out more online about the mayfly lifecycle and how you can reduce the number appearing in your backyard.

Advertisement

What controls the timing of mayfly emergence?

The timing of mayfly emergence from sediments is based on the water temperature. Mayflies emerge after the water temperature at depth reaches 20 degrees Celsius (68 degrees Fahrenheit). In the western Lake Erie basin and Lake St. Clair, water is shallow enough that the water temperature at the surface is only a few degrees different from the temperature at depth.

How do I know what the water temperature is in Lake Erie or Lake St. Clair?

You can monitor the surface water temperature via buoys. A few days after buoys indicate a temperature of 20 degrees Celsius, the sediments will also warm to that temperature and mayflies will start to emerge. The National Oceanic and Atmospheric Administration has an experimental forecast product for bottom water depths that is frequently updated. You can also view current temperatures on the Seagull platform, part of the Great Lakes Observing System. This way you can tell in real-time when mayflies will begin to emerge.

If mayflies only live outside of water for two days, why does the mayfly “season” continue for several months (typically June through August)?

Scientists do not understand why mayflies persist so long. Mayflies emerge in different cohorts. One cohort has gone through several growth stages and is almost ready to emerge in late summer or fall but is prevented by the declining temperatures. These are the first cohorts to emerge the following summer. Individuals in the second cohort are smaller in the fall and are not ready to emerge until later in the following summer. There are also two similar but separate species of mayflies in Lake Erie and they may develop at slightly different rates.

Can you predict how many mayflies will emerge this year?

It is hard to predict how many mayflies will emerge because there are a number of environmental factors that control the number of mayflies. These factors include the number of mayflies that survive the winter as well as the oxygen levels at depth in Lake Erie. A harsh winter may mean fewer mayflies survive. Low oxygen conditions at depth can also suffocate the mayfly larvae in the sediments.

How many mayflies will reach my backyard?

Not all mayflies that emerge will reach land. Mayflies may land on islands instead. Wind speed and direction impacts whether mayflies from the Canadian side of Lake Erie end up on land in the United States or vice versa. Mayfly swarms are expected within a few days of water temperatures reaching 20 degrees Celsius and may continue up to 10 days (Corkum et al., 2006). In many cases, swarms are large enough to appear on weather radar at this time.

Advertisement

When you see mayflies, remember they are a sign of healthy local water bodies and that the mayflies are providing food for birds and fish you like to watch or catch!

Michigan Sea Grant helps to foster economic growth and protect Michigan’s coastal, Great Lakes resources through education, research and outreach. A collaborative effort of the University of Michigan and Michigan State University and its MSU Extension, Michigan Sea Grant is part of the NOAA-National Sea Grant network of 34 university-based programs.

Citation: Corkum, L.D., Ciborowski, J. J. H., and Dolan, D. M. 2006. Timing of Hexagenia (Ephemeridae: Ephemeroptera) mayfly swarms: Canadian Journal of Zoology v. 84 n. 11, pg. 1616-1622.

This article was prepared by Michigan Sea Grant under award NA22OAR4170084 from the National Oceanic and Atmospheric Administration, U.S. Department of Commerce through the Regents of the University of Michigan. The statement, findings, conclusions, and recommendations are those of the author(s) and do not necessarily reflect the views of the National Oceanic and Atmospheric Administration, the Department of Commerce, or the Regents of the University of Michigan.

Advertisement

Did you find this article useful?






Source link

Advertisement

Michigan

Recruiting Analyst Predicts Michigan Football to Land a Top 50 Prospect

Published

on

Recruiting Analyst Predicts Michigan Football to Land a Top 50 Prospect


Michigan just signed the 12th-ranked class in the 2026 cycle — headlined by five-stars Carter Meadows and Savion Hiter — and now the Wolverines have all focus on the 2027 class behind their new coaching staff. Kyle Whittingham and Co. have been on the road seeing some top prospects.

Jay Hill Describes What Michigan Football’s Defense Will Look Like Under Him

Rivals’ Greg Smith recently ‘called his shot’ by predicting ’27 WR Quentin Burrell to Michigan. Burrell was a player the old staff was very familiar with, and now new WR coach Micah Simon has begun to build a foundation with the Mount Caramel playmaker.

Advertisement

“Other teams have tried to push their way into this two team race between Michigan and Notre Dame. Lately, Arizona State has been rising here as a true threat to the blue blood programs. But right now I still like Michigan to get this one done. He’s very familiar with the program overall but just needs more time to get exposed to coach Kyle Whittingham and his staff.”

Burrell’s scouting report

The 6’3″ playmaker out of Chicago, Illinois, is ranked as the No. 50 prospect in the nation, per the Composite. Burrell is the No. 9 WR and No. 2 player from the state of Illinois. He holds offers from just about every college program in the country with notable offers from Alabama, Georgia, LSU, Ohio State, and Oregon, among others.

In 2025, during his junior season, Burrell’s squad went 14-0 and won the state title. Burrell was named the News-Gazette All-State Player of the Year and made First-Team All-State. He caught 67 receptions for 1,139 yards and 16 touchdowns.

Advertisement

For Burrell’s career, he has caught 142 passes for 2,396 yards and 34 scores.

The need for elite WRs in Ann Arbor

Michigan’s recruiting of the WR position appears to be trending upwards in the last couple of cycles, but the Wolverines didn’t recruit the position too well towards the end of the Jim Harbaugh era, so Michigan had to utilize the transfer portal to bring in starting-caliber playmakers.

The Wolverines landed a great one in Andrew Marsh, who led the team last season during his true freshman season. Michigan is also high on Jamar Browder and the Wolverines landed four-star Travis Johnson and three-star Jaylen Pile in this past cycle. The Kyle Whittingham connection helped Michigan land five-star athlete Salesi Moa, who was a short-term signee with Utah.

Advertisement

Michigan will have to prove it can pass the ball well enough to entice top-tier playmakers to come to Ann Arbor. But with new OC Jason Beck and QB coach Koy Detmer Jr., the play of Bryce Underwood should continue to improve.



Source link

Advertisement
Continue Reading

Michigan

Cason leads second-half rally as No. 2 Michigan knocks off Northwestern, 87-75

Published

on

Cason leads second-half rally as No. 2 Michigan knocks off Northwestern, 87-75


EVANSTON, Ill. — – L.J. Cason scored 13 of his 18 points after halftime, helping No. 2 Michigan rally for an 87-75 victory over Nick Martinelli and Northwestern on Wednesday night.

Yaxel Lendeborg added 15 points and 12 rebounds as the Wolverines (23-1, 13-1 Big Ten) erased a 16-point deficit in the second half of their ninth consecutive victory. Morez Johnson Jr., Aday Mara and Trey McKenney each scored 12 points.

Michigan grabbed control with a 15-2 run. Lendeborg made a tiebreaking layup with 5:51 left, and Mara’s alley-oop jam off a pass from Cason gave the Wolverines a 75-69 lead with 4:43 remaining.

Michigan shot 55% (16 for 29) while outscoring Northwestern 52-31 in the second half of its 19th double-digit win this season.

Advertisement

Jayden Reid scored 20 points for the Wildcats in their fourth consecutive loss. Martinelli finished with 18 on 5-for-22 shooting and grabbed eight rebounds.

Northwestern used an 8-1 run to open a 58-42 lead with 14:22 left. Angelo Ciaravino capped the spurt with a jumper in the paint.

Michigan then got back in the game by scoring 16 of the next 18 points. Johnson’s alley-oop dunk trimmed Northwestern’s advantage to 60-58 with 9:38 to go, delighting a sizeable contingent of Michigan fans at Welsh-Ryan Arena.

Lendeborg was 6 for 12 from the field. He has 45 rebounds in his last four games.

Northwestern got off to a fast start, holding Michigan to 35% shooting on its way to a 44-35 lead at the break. Reid scored 12 points in the first half on 5-for-5 shooting.

Advertisement

Up next

Michigan hosts UCLA on Saturday.

Northwestern visits No. 7 Nebraska on Saturday.

——

Get poll alerts and updates on the AP Top 25 throughout the season. Sign up here. AP college basketball: https://apnews.com/hub/ap-top-25-college-basketball-poll and https://apnews.com/hub/college-basketballbr/]

Advertisement

Copyright © 2026 ESPN Internet Ventures. All rights reserved.



Source link

Continue Reading

Michigan

ESPN on Michigan’s 2026 season: Can Bryce Underwood be a game-changer?

Published

on

ESPN on Michigan’s 2026 season: Can Bryce Underwood be a game-changer?


Even with a changing of the guard with Kyle Whittingham taking over the Michigan football program, the Wolverines are somewhat flying under the radar. Despite all of the behind-the-scenes turmoil, the maize and blue managed to go 9-4 last season, which stands to reason: with more cohesion, could Michigan be better in 2026?

The schedule is brutal, but there’s a level of seriousness that Whittingham brings to the table. Considering the upgrade that new offensive coordinator Jason Beck should be, along with many of the transfers who have come in on that side of the ball, there’s a lot to like about the Wolverines’ offense.

ESPN had a roundtable discussion about some of the early storylines across college football, and one panelist, when talking about offensive players, demurred from the Dante Moore-Jeremiah Smith expectations and spoke up about Bryce Underwood and what he might bring to the table in his second year.

Lyles: I agree with all of the above, but I’ll add Michigan quarterback Bryce Underwood based on his potential. I am excited to see what new offensive coordinator Jason Beck is going to be able to do with him after seeing the success Beck had with Devon Dampier at both New Mexico and Utah. If he’s able to have similar success with the Wolverines, there’s no question Underwood will be one of the more impactful players this season.

Underwood had a bit of an up-and-down freshman campaign, one that showed very little in the way of development. However, that’s been pinpointed by Whittingham and Beck as something they’re working to change. If they’re able to get Underwood to maximize his potential, it could be a complete game-changer for the Wolverine offense — and potential outlook for the team as a whole.

Advertisement



Source link

Continue Reading

Trending