Trio They are a group of freshwater crustaceans, commonly called tadpole shrimp or dinosaur shrimp. They look like ancient armored tadpoles that have been shaken for hundreds of millions of years. Word “Trio“means” three eyes “in Greek, and the group is named after them because they have two main compound eyes and a simple third organ called the ocular eye that helps them detect light.
Animals are not shrimp, which is the name given to marine crustaceans of the order Decapoda (Trio Notostraca are in order). But like shrimp, Trio – He lives in the water – one of his family and one of the two genera of the order. In fact Trio They have adapted to extreme life in freshwater or slightly salty pools that can last a few weeks before drying out.
Are Triops Dinosaurs?
TrioThe appearance has not changed much since the group was formed in Devonian times (419 million and 359 million years ago). University of Central Michigan Mount Pleasant, Michigan. This ancient and morphologically consistent lineage led some people to call creatures “living fossils”, a term commonly used to describe deep-sea fish as coelacanths (SEE’-lah-kanths) and horseshoe crabs, another animal with a slight appearance. like Trio.
Scientists considered one Trio species, Triops cancriformis, The same animal seen in 250 million-year-old fossils. That would mean Triops cancriformis It lasted from the Triassic period (about 252 million and 201 million years ago) to the present day. dinosaurs was first created – hence the name “dinosaur shrimp”. However, the 2013 study Trio DNA published in the journal PareJ he found that the current species has evolved over the last 25 million years.
“Living fossils evolve like any other organism, they have a good body plan that has survived the test of time,” said Africa Gómez, lead author of the study, an evolutionary biologist at the University of Hull in England. statement at the time. “A good analogy could be made with cars. For example, Minik has an old design that is still for sale, but the newly made Miniks have electronic windows, GPS and airbags: in that sense, they continue to ‘evolve’, they are not. instead of being “on the couch”.
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Where does Triops live?
The Trio the group is present on every continent except Antarctica. The Integrated Taxonomic Information System (ITIS) Knows 13 different species Trio genus, including Australian tadpole shrimp (Triops australiensis) Australian, Triops emeritensis In Europe and North Asia, and Triops maximus African. There are two native species in the United States: Newberry tadpole shrimp (Triops newberryi) and summer tadpole shrimp (Triops longicaudatus).
Summer tadpole shrimp are the most widely distributed of them all Trio except for species and species in the United States (Alaska), Canada, the Caribbean, Japan, and some Pacific islands, although humans introduced them to Japan and the Pacific Islands, according to the University of Michigan. BioKids website.
How big is Triops?
Trio usually up to a few inches long. For example, the summer tadpole shrimp reaches a length of 1.6 inches (4 centimeters), which is still considered quite large. Trio, According to BioKids. Australian tadpoles are larger and up to 3.5 inches (9 cm) long, according to the report. Museum of Western Australia.
How do Triops Breed?
Because Triplets’ Aquatic habitats are temporary, mature rapidly, and move from eggs to adult growth in two to three weeks, he said. BuglifeA charity for the conservation of invertebrates in the United Kingdom Trio they are hermaphrodites, meaning that each individual has two sexual organs, but they can also reproduce sexually and also produce offspring from unfertilized eggs. This flexibility helps each generation to reproduce Trio create another in extreme environments, including deserts.
Triplets’ the eggs can enter the “slide”, that is, in a dormant state, stop developing and drying the eggs. The slide allows you to lay eggs, and Trio inside, to survive when their watery wells evaporate in arid conditions. The eggs can stay in the slide until they are 27, so they can grow waiting for the water to return, according to Buglifer.
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When the conditions are right, these animals can suddenly hatch in large numbers. For example, hundreds Trio In 2021, Live Science reported earlier that the ceremonial field was a usually dry ball field – a circular wall structure – at the Wupatki National Monument in northern Arizona.
“We knew there was water on the ball field, but we didn’t expect anything alive,” Lauren Carter, Wupatki National Monument’s chief of interpretation at the time, told Live Science. “Then a visitor came and said, ‘Hey, you have tadpoles in the front yard.'”
They were “tadpoles.” Trio which was created after the creation of a temporary lake in the pelota court. After hatching, Trio According to BioKids, they live 70 days in the wild and 90 days in captivity.
What they eat Triops
Trio they are highly adaptable and have a varied diet, including the removal of organic matter floating in their pools and hunting such as zooplankton and insect larvae. When food is scarce, they can also eat together. Summer tadpoles are a pest in rice fields because they eat young crops and muddy the water of the crop to get less light to the plants, according to Central Michigan University.
It is eaten by birds, especially waterfowl Trio. The threat of predation is very high Trio they tend to be solitary because potential predators are more likely to see and eat a group, according to BioKids.
Are Triops at Risk?
Four species Trio face extinction, he says International Union for Conservation of Nature (IUCN): Triops gadensis, Triops baeticus and Triops vicentinus they are in danger of extinction Triops emeritensis is in serious danger. The four species live in the Iberian Peninsula in Spain and Portugal, and are threatened by human activities such as development and agriculture.
The IUCN has not evaluated any of the species found in the United States. However, Newberry tadpole shrimp are classified as “safe,” not in danger of extinction. NatureServeVirginia-based nonprofit that collects data on North American wildlife.
See where the map is Trio found all over the world, look Encyclopedia of Life website. Learn more about how Triops longicaudatus to survive in the US, watch this short YouTube video Zion National Park. for more information Trioreview “Timeless Triops: A prehistoric creature“(Photo by Lori Adams, 2014).
Originally published in Live Science.