2020-07-02

Scientists have discovered new alien species in the Pacific Rift Zone, and our knowledge of the ocean is still very limited

By ddzyx

Author:clamps have produced

The Clarion-Clipperton Zone is a huge sag fault zone in the central Pacific Ocean, with an area of ​​about 4.5 million square kilometers (170 10,000 square miles), because the polymetallic nodules deposited in the coastal bed are rich in precious metals and rare earth minerals, they are regarded as a”treasure land” in the mining industry.

However, ancient minerals are not the only amazing things here. In a new study, researchers reported that they found some deep-sea creatures previously unknown to the scientific community, who lived 5 kilometers (3.1 miles) deep below the surface of the ocean.

These examples are called”Xenophyophorea”, a branch of a huge single-celled protozoan belonging to the Foraminifera.

W1IPmL7QU5U3swGHBRzxpeuueDcwbts9jJ bjMxIKuvXE1iCWzcQYmQ - Scientists have discovered new alien species in the Pacific Rift Zone, and our knowledge of the ocean is still very limited

Figure 2 Artistic drawing of a foraminifera creature

“Xenophyophorea” is Clarion-Klee One of the most common “large” life forms in the deep-sea fault zone of the Perton area. Although it has been discovered and documented since the end of the 19th century, we do not know much about them, mainly because they live in extremely deep depths.

Figure 3 The semi-circular”Monaina” on the seabed

From the National Oceanography of the United Kingdom The center’s marine ecologist Andrew Goody said:”These four new species and two new genera have increased the number of known’Xenophyophorea’ in the abyss of the Clarion-Clipperton Zone to 17 (accounting for the total number of global 22%), there are more known’Xenophyophorea’, but it has not been described in detail.”

This area of ​​the Pacific is obviously a hot spot where the diversity of”Xenophyophorea” exists.

Among these new discoveries, there is a new species called”Abyssalia” (transliteration:Abisalia), which is named after the abyss where it”lurks”. During an inspection in 2018, the researchers discovered two Abbaria species in the western part of the Clarion-Clipperton area through the oceanographic research vessel RV Kilo Moana. Is a leaf-shaped animal, the other is a spherical animal.

The surface of these foraminifera is covered with a hard shell called”Tests” (in biology, test refers specifically to the shell of spherical marine life), they are composed of tiny particles that stick together . As far as the Abisalia species is concerned, these shells are composed of uniform mesh sponge bone needles with no obvious surface layer.

These spherical ones look a bit like messy dandelions, while the leaf-shaped ones are flat, like the shape of leaves.

Another newly discovered genus-Moanammina (transliteration:Monamina)-its name is derived from”Moana/Moana”, which means it in Hawaiian, Maori and other Polynesian languages For the ocean.

Spherical, resembling a little messy dandelion, while the leaf shape is flat, like the shape of a leaf.

Figure 4 Xenophyophorea”mud sphere” of unidentified species

Semicircular Monamina (Moanammina semi ircularis) has a handle-shaped, fan-shaped”shell”, while another new species, Psammina tenuis belonging to the genus Maumina, has a delicate, thin, disc-shaped”shell”.

Researchers also found that they thought it might be a new type of spherical”mudball” shaped foraminifera evolutionary branch, but unfortunately, before detailed inspection can confirm its true identity, this This kind of mud ball-like composition has collapsed.

“We can see them everywhere on the ocean floor, in different shapes and sizes. They are obviously very important members of the rich biomes living in the Clarion-Clipperton Zone,” University of Hawaii’s Oceanographer Craig Smith said he was the chief scientist of the Kilo-Moana research ship.

“Among other things, they provide micro-habitats and potential food sources for other organisms. If we want to fully understand the impact of submarine mining on these submarine organisms, we need to learn more about these aliens The ecology of protists.”

The results of this study were published in the “European Journal of Native Biology”.