Moray eels have a nightmare second set of hidden jaws. These extra jaws can be instantly snapped forward to anchor to the prey and drag the animal into the eel’s esophagus.
According to new research, these terrifying slingshot jaws help some Marie do things that most fish can’t. Swallow the prey while on land. It’s an uneasy sight in a video of a researcher showing a prey being pulled into an eel’s throat when the moray eel’s mouth opens.
Fish usually need to move water to bring food from their mouth to their belly. However, the snowflake moray eel (Echidna nebulosa) You can ambush crabs on land by moving from the sea to catch their prey at low tide. Recently, researchers have found that the recoil of the moray eel’s secondary jaw is strong enough to help the moray eel swallow food without retreating into the sea.
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All teleost fish (whose skeleton is made of bone rather than cartilage) have a pharyngeal jaw in addition to the main jaw. The jaw of the pharynx is behind the pharynx or throat. They are smaller than the jaws of a fish’s mouth and are used to grab, stab, and crush food. Smithsonian National Museum of Natural History..
However, unlike the pharyngeal jaws of most fish, the moray eel’s jaw is “very mobile” and can jump over the throat into the moray eel’s mouth, says Rita, an associate professor of ecological evolutionary biology at the University of California. Meta says. Santa Cruz (UCSC).
In 2007, Mehta explained how moray eels took advantage of this extreme movement when feeding underwater. Its pharyngeal jaw acts as “these wonderful forceps to grab prey.” She talked to Live Science earlier..The new study was published on June 7th Experimental Biology Journal, Mehta and co-author Kyle Donohoe, a research assistant at the UCSC Pinniped Cognition and Sensory Systems Laboratory, filmed eels devouring food while they were out of the water, Mehta emailed Live Science.
“Based on what we knew about how the pharyngeal jaw works, it makes sense that if moray eels can catch their prey in the intertidal zone or on land, they can swallow it on land without resorting to water. “Mehta said.
Studies have shown that it took six years to train snowflake moray eels to supply water in laboratory experiments and record the results. Scientists have installed eels in an aquarium with a platform and lamps above the surface of the water. Next, I trained Eels named Bengen, Marsh, Crab, Jetsom, Frosty, Flatsom, and LB to climb the ramp of a small piece of squid. Over time, the bait moved above the ramp, eventually causing the eels to independently flutter off the surface of the water and swell along the ramp to find the bait.
“For most of the terrestrial tests, snowflake moray eels caught their prey on ramps, rippling their upper body from the surface,” the researchers reported. They analyzed 67 videos of eel diets in water and on ramps and found that fish used the pharyngeal jaw in the same way and at the same speed in water or on land.
Moray eels are not your average “fish out of the water”. They can function during temporary oxygen deficiency, a study of the Mediterranean moray eels, relatives of the snowflake moray eels (Muraena Helena), The lipids and mucus in the skin of moray eels have been shown to be able to prevent the Eels from drying out when exposed to air, the study authors write.
Experiments provide a previously unseen example of moray eel behavior, showing how moray eels combine amphibious features with pachinko jaws to make them versatile and formidable hunters in moist or dry environments. Suggested. These adaptations allow moray eels to find new types of food in the event of a lack of regular supply, and the potential for fish to feed in different habitats to avoid competition in marine ecosystems. There is, Mr. Meta said.
Survey results on June 7th Experimental Biology Journal..
Originally published in Live Science.
These eels can swallow prey on land, thanks to the expandable jaws of their throats
Source link These eels can swallow prey on land, thanks to the expandable jaws of their throats