Institute of Oceanology, Chinese Academy of Sciences released 11 new species of deep-sea armour shrimp
By: Date: 2021-03-29 Categories: foodtechnology Tags: ,
   Recently, the internationally renowned Zoological Journal of the Linnean Society published online the latest research results of marine biological classification and system evolution from the Institute of Oceanology, Chinese Academy of Sciences. Researchers used morphological taxonomy and molecular systematics methods to study two superfamily species of decapod lobster collected from four seamounts near the Yap Trench and Mariana Trench in the Western Pacific, and found that 11 new species are described, namely Uroptychodes yapensis, Uroptychus faxianae, Uroptychus liui, Mariana Uroptychus marianica, Uroptychus transparens, and ocean prawn Sternostylus iocasus, Munida pubescens, Munida rosea, Munidopsis dispar, Guochuan Munidopsis guochuani and Munidopsis kexueae.
   Armored Shrimp is one of the most diverse decapod crustaceans in the deep sea. Previous studies have found that in the seamount ecological environment, the armour shrimp is a common or dominant species in the benthic ecological community. However, due to the limitation of the survey conditions, the diversity of armour shrimp in the seamounts surrounding the Yap Trench and Mariana Trench in the tropical western Pacific is still unknown. From 2014 to 2019, the marine area of ​​the Chinese Academy of Sciences conducted several ecological surveys of seamounts and collected a large number of biological samples of armour shrimp. Through morphological classification and molecular systematic studies on 46 individual specimens, a total of 26 species were found. It belongs to 2 superfamilies, 5 families, and 8 genera, including 11 new species, which account for more than 40%of the new species, revealing that the armoured shrimps have extremely high biodiversity in these seamount environments. It shows people’s lack of understanding of the creatures in this sea area.
   Among these 11 new species, the Oceanic Shrimp was named to celebrate the 70th anniversary of the founding of the Institute of Oceanology of the Chinese Academy of Sciences. The two armoured shrimp named after the characters Liu’s scalloped shrimp and Guo Chuan’s pseudo-stabbed shrimp, respectively commemorate the Chinese crustacean pioneer academician Liu Ruiyu and the navigator Mr. Guo Chuan.
   This study found many peculiar-looking armored shrimps, such as a new species of transparent prawns. The background color of seamount armored prawns is mostly orange-red or orange, while the transparent prawns are transparent. Armored shrimp is very rare. The Guochuan Pterocephalus has”non-mainstream” slender chelated feet and rows of spines on the back. In situ observations found that it clings to the polyps. This habitat feature is the first recorded in Pterocephalus genus .
  The study also found that although a total of 26 species were found in four seamounts, only 5 species appeared in two or more seamount survey areas, of which 4 species lived in environments more than 1200 meters deep. This result shows that in the deep sea, deeper benthic organisms may have a wider range of spread. This study also provided three gene marker sequences of all species of armour shrimp, constructed the phylogenetic relationship between these species and similar species, and discussed the monophyleticity of some genera.
   The research was supported by the National Science and Technology Fundamental Resources Survey Project, the Strategic Biological Resources Capacity Building Project of the Chinese Academy of Sciences, the National Natural Science Foundation of China, and the”Science” high-end user project. Associate researcher Dong Dong and Associate researcher Gan Zhibin of the Marine Taxonomy and System Evolution Laboratory are the co-first authors, and researcher Dong Dong and Li Xinzheng are the co-corresponding authors of the paper.
  Related papers:
  Dong Dong, Zhibin Gan, Xinzheng Li. Descriptions of eleven new species of squat lobsters (Crustacea:Anomura) from seamounts around the Yap and Mariana Trenches with notes on DNA barcodes and phylogeny. Zoological Journal of the Linnean Society, 2021, zlab003, https://doi.org/10.1093/zoolinnean/zlab003.