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Tree Frog Tadpoles Have A Unique Way Of Not Contaminating Their Water Supply: Not Pooping
The Eiffinger's tree frog (Kurixalus eiffingeri), found on Ishigaki and Iriomote islands in Japan, has a unique biological adaptation: its tadpoles do not defecate during their early developmental stages. This finding by researchers at Nagoya University in Japan contributes to our understanding of how these small frogs survive in the tiny bodies of water where they spawn. The findings were published in the journal Ecology.
Eiffinger's tree frogs rear their young in small, isolated water bodies, such as tree hollows and bamboo stumps, which provide a safe environment with few predators.
However, in these limited water spaces, the tadpoles face the challenge of waste management. Unlike other species that excrete toxic ammonia in their feces into larger water bodies where it is diluted and rendered harmless, the confined water environments of Eiffinger's tree frogs do not allow them this luxury. Excessive defecation causes ammonia to build up in the tiny water bodies, leading to toxicity and endangering their survival.
Bun Ito, a special research student, and Professor Yasukazu Okada at the Graduate School of Science, Nagoya University, focused on this peculiar aspect of the frog's life cycle and discovered that the tadpoles exhibit a remarkable strategy to managing their waste: they go for months without pooping.
To keep the water bodies clean, Eiffinger's tree frog tadpoles excrete significantly less ammonia than other frog species. Instead of releasing waste into their environment, the tadpoles store it in their intestines, accumulating high concentrations of ammonia within their bodies.
The frogs only begin to defecate once they transition from tadpoles to subadults. This delayed excretion suggests that nitrogen, which is ingested as part of their diet, is effectively retained within their body in the form of ammonia until it can be safely expelled outside their spawning site. This sanitation strategy mirrors the behavior of some bee and ant larvae, which similarly retain feces in their intestines to keep their nests clean.
To further understand these findings, the researchers conducted experiments to compare the ammonia tolerance of Eiffinger's tree frog tadpoles with that of other frog species, such as the Japanese tree frog, by raising them in ammonium chloride solutions with varying concentrations.
They found that Eiffinger's tree frog tadpoles could survive in much higher concentrations of ammonia than other species, showing a heightened resistance to this toxin. However, even their tolerance had limits, as the tadpoles succumbed under extremely high ammonia concentrations.
These findings highlight a dual adaptation strategy in Eiffinger's tree frog tadpoles: reducing the amount of ammonia they release into their environment and developing a high tolerance to the ammonia they do encounter. This combination allows them to thrive in the small, confined water areas where they develop.
The study sheds light on how Eiffinger's tree frogs have adapted to their restricted habitats, employing unusual biological mechanisms to manage waste and ensure the survival of their offspring. The research team's findings offer valuable insights into the unique survival strategies of organisms living in specialized environments.
Ito believes that the research has important conservation implications. "The discovery of frogs that have successfully adapted to the unique environment of small water holes reveals a more complex ecosystem within these tiny habitats than we initially imagined," he said. "Protecting biodiversity necessitates the preservation of these microhabitats."
More information: Bun Ito et al, Phytotelmata‐dwelling frog larvae might exhibit no defecation: A unique adaptation to a closed aquatic environment, Ecology (2024). DOI: 10.1002/ecy.4428
Citation: Tree frog tadpoles have a unique way of not contaminating their water supply: Not pooping (2024, September 24) retrieved 28 September 2024 from https://phys.Org/news/2024-09-tree-frog-tadpoles-unique-contaminating.Html
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This Minnesotan Just Earned His First PGA Tour Card
If you are a fan of golf, which seems to be plenty of people in Minnesota, it looks like we've got a fellow Minnesotan to follow on the PGA Tour this year. A 24-year-old Minnesotan just got his first PGA Tour card, thanks to his play on the Korn Ferry Tour. Congrats to Frankie Capan III!
The Korn Ferry Tour made the celebratory announcement on social media last week.
Frankie Capan III is a Stillwater Minnesota native, that attended Florida Gulf Coast University.
Growing up Frankie and his family split time between Minnesota and Arizona, and according to his PGA biography, he was the standard bearer for the 2012 Waste Management Open in Phoenix.
The Korn Ferry Tour, is the PGA's minor league so to speak, it gives golfers the chance to earn enough points through their play, to earn a chot at playing in PGA Tournaments, where the purses are larger, and of course there is more attention on the golfers.
You can read more about how that has changed this year, by offering 30 PGA Tour cards rather than the 25 offered in years past, by heading here.
If you can see Frankie play this year, now that he has is PGA Tour card, be on the lookout for his signature green ball marker. It's a 1967 quarter.
Why the specific piece of change to mark his ball on the green, well it has to do with his dad. According to the same PGA biography, he uses that quarter because:
His dad was born in 1967 and introduced him to the game; he also always marks it using the tails side because "tails never fails."
Congrats to Frankie, and I know I'll be looking forward to watching his progress during the upcoming PGA season.
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Massachusetts DEP On How To Deal With Fruit Fly Infestation
I do not recall experiencing a fruit fly infestation like the one that has taken shape inside my apartment in recent days. Those little boogers keep on coming.
It turns out we are not alone. I have heard from others through social media that they too have been deluged by fruit flies. In mid-September, I joked when my cousin Nancy posted on Facebook that she needed suggestions for deleting the little critters.
Not 24 hours later, they invaded my place.
"Okay, peeps...Need Help!" posted Nancy. "Fruit flies have taken over my kitchen!"
Nancy said she'd tried everything she could to rid her kitchen of the pests but to no avail.
Nancy's plea generated nearly 60 responses, many from those also waging war against fruit flies. Some offered suggestions ranging from bug lights to liquid concoctions on countertops.
It is not unusual to see a fruit fly or two when the bananas are getting a little long in the tooth, but even after the fruit got tossed the flies kept coming.
The Massachusetts Department of Environmental Protection says, "Fruit flies and fungus gnats are the most common flying insects found in and around compost bins."
Massachusetts DEP On How To Deal With Fruit Fly Infestation
Getty Images"These insects are not dangerous or harmful; however, their presence can be a nuisance, particularly indoors," the DEP said. " A little information about the food and environments these insects are attracted to can be used to help us control their presence in places where they are not wanted."
We eradicated the invaders by cleaning thoroughly, removing standing water, tossing rotting fruit, and storing good fruit in the fridge. They like damp things such as wet dishcloths and sink drains. It's where they lay their eggs.
My wife also mixed apple vinegar with dish detergent in a small bowl and placed it near the kitchen and bathroom sinks. It works.
DEP also recommends putting a rotting banana peel inside a jar and poking a few small holes in the lid. The flies crawl in and can't get back out again.
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