Pheretima praepinguis

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Pheretima praepinguis
Pheretima praepinguis (Big earthworm of Mount Emei).jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Annelida
Class: Clitellata
Order: Haplotaxida
Family: Megascolecidae
Genus: Pheretima
Species:P. praepinguis
Binomial name
Pheretima praepinguis
Gates, 1935 [1]

Pheretima praepinguis is a huge earthworm about half meter long of genus Pheretima. [2] Pheretima praepinguis lives in Emei mountain, Sichuan Province, China, and is one of the most featured organisms living in the place. [1] It's trivially called "Big Earthworm of Emei"(Chinese :峨嵋大蚯蚓) or "Toudilong" (Chinese :透地龍,literally means "dragon which can go through the earth"). [3]

Earthworm suborder of tube-shaped, segmented annelids

An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. They have a world-wide distribution and are commonly found living in soil, feeding on live and dead organic matter. An earthworm's digestive system runs through the length of its body. It conducts respiration through its skin. It has a double transport system composed of coelomic fluid that moves within the fluid-filled coelom and a simple, closed blood circulatory system. It has a central and a peripheral nervous system. The central nervous system consists of two ganglia above the mouth, one on either side, connected to a nerve cord running back along its length to motor neurons and sensory cells in each segment. Large numbers of chemoreceptors are concentrated near its mouth. Circumferential and longitudinal muscles on the periphery of each segment enable the worm to move. Similar sets of muscles line the gut, and their actions move the digesting food toward the worm's anus.

<i>Pheretima</i> genus of annelids

Pheretima is a genus of earthworms found mostly in New Guinea and parts of Southeast Asia.

Mount Emei mountain

Mount Emei is a mountain in Sichuan Province, China, and is one of the Four Sacred Buddhist Mountains of China. Mt. Emei sits at the western rim of the Sichuan Basin. The mountains west of it are known as Daxiangling. A large surrounding area of countryside is geologically known as the Permian Emeishan Large Igneous Province, a large igneous province generated by the Emeishan Traps volcanic eruptions during the Permian Period. At 3,099 metres (10,167 ft), Mt. Emei is the highest of the Four Sacred Buddhist Mountains of China.

Contents

History

In 1931, Yi Chen (Chinese :陳義), a honored Chinese biologist, researched some samples of an earthworm from Mount Emei, Sichuan Province. At that time, he suggested that it should be classified into Pheretima tschiliensis. However, G. E. Gates found out that such earthworm is different with Pheretima tschiliensis. They can be distinguished by the location of the primary spermathecal pores in parietal invaginations. He then named this earthworm after Pheretima praepinguis in 1935. Although Yi Chen insisted that Pheretima praepinguis is a synonym of Pheretima tschiliensis in an article published in 1936, [4] this name is ubiquitously accepted nowadays. [2] [5]

Traditional Chinese characters Traditional Chinese characters

Traditional Chinese characters are Chinese characters in any character set that does not contain newly created characters or character substitutions performed after 1946. They are most commonly the characters in the standardized character sets of Taiwan, of Hong Kong and Macau, and in the Kangxi Dictionary. The modern shapes of traditional Chinese characters first appeared with the emergence of the clerical script during the Han Dynasty, and have been more or less stable since the 5th century.

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References

  1. 1 2 冯孝义 (Xiao-yi Feng); 董芷馨 (Zhi-xin Dong). "中药地龙原动物的研究(Studies on the Zoological Origin of Earthworms for Medicinal Use)". 中国中药杂志(China Journal of Chinese Materia Medica),1987,12(10):3.
  2. 1 2 赵云 (Yun Zhao). "Pheretima praepinguis". 四川大学 (Sichuan University). Archived from the original on 2017-07-27.
  3. ↑ 盛红 (1 July 2013). 半山一眸，世界真奇妙. 四川文艺出版社；Esphere Media (美国艾思传媒). p. 46. ISBN   978-7-5411-3745-7.
  4. ↑ Yi Chen (1936). "On the terrestrial Oligochaeta from Szechuan. II. With notes on Gates' types". Contributions from the Biological Laboratory of the science society of China (Zool), 11, 269–306.
  5. ↑ G. E. Gates (1939). "ON SOME SPECIES OF CHINESE EARTHWORMS, WITH SPECIAL REFERENCE TO SPECIMENS COLLECTED IN SZECHWAN BY DR. D. C. GRAHAM". Proceedings of the United States National Museum. Washington. 85.
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