사진

지식채널

• 논문정보

  검색결과 10건

  논문정보 목록 - 제목, 내용, 저자, 저널명/발행자, 상세보기

  제목	내용	저자	저널명/발행자	상세보기
  Insights into adaptive divergence of Japanese mantis shrimp Oratosquilla oratoria inferred from comparative analysis of full-length transcriptomes	The heterogeneous seascapes in the northwestern Pacific (NWP) can be important selective forces driving adaptive divergence of marine coastal species distributed along the gradients. Here, we tested this hypothesis in Japanese mantis shrimp (Oratosquilla oratoria) with a wide distribution in the NWP and a significant north-south population structure. To this end, the full-length (FL) transcriptomes of northern and southern O. oratoria were firstly sequenced using PacBio single molecule real-time sequencing technology. Based on the FL transcriptome data, we captured large-scale FL transcripts of O. oratoria and predicted the FL transcriptome structure, including coding region, transcription factor and long noncoding RNA. To reveal the divergence between northern and southern O. oratoria, we identified 2,182 pairs of orthologous genes and inferred their sequence divergences. The average differences in coding, 5’ untranslated and 3’ untranslated region were 1.44%, 2.79% and 1.46%, respectively, providing additional support to previous proposition that northern and southern O. oratoria are two species. We provided further evolutionary context to our analysis by identifying positive selected genes (PSGs) between northern and southern O. oratoria. In total, 98 orthologs were found evolving under positive selection and involved several environmentally responsive genes associated with stress response, immunity and cytoskeletal organization, etc. Furthermore, we found PSGs also diverged in gene expression response of northern and southern O. oratoria to heat stress. These findings not only highlight the importance of genetic variation in these genes in adapting to environmental changes in O. oratoria, but also suggest that natural selection may act on the plasticity of gene expression to facilitate O. oratoria adaptation to environmental gradients. Overall, our work contributes to understanding how marine coastal species has evolved to adapt to heterogeneous seascapes in the NWP.	Cheng, Jiao,Zhang, Liwen,Hui, Min,Li, Yuan,Sha, Zhongli	Frontiers Media SA	상세보기
  Application of light-emitting diodes (LEDs) fishing lights to improve catch rates of small-scale trammel net fishery in the Yellow Sea, China	The small-scale trammel net fisheries are essential to the economy and well-being of coastal communities in the Yellow Sea, China. However, these fisheries are low efficient and urgently demand technical innovations to improve catch rates. In this study, we conducted field experiments in three traditional fishing grounds (Rizhao, Yantai, and Weihai) to test whether the addition of different colored light-emitting diodes (LEDs) fishing lights in the trammel nets could improve the catch rates of seven commercial species. Results showed that the effects of LEDs on catch rates were species-specific. Green LEDs could significantly increase the catch per unit effort (CPUE) of black rockfish (Sebastes schlegelii), fat greenling (Hexagrammos otakii), marbled flounder (Pseudopleuronectes yokohamae), stone flounder (Platichthys bicoloratus), Asian paddle crab (Charybdis japonica), and mantis shrimp (Oratosquilla oratoria) by 40%-72% compared with unilluminated nets, while had no significant effect on the catch rates of swimming crab (Portunus trituberculatus). Red LEDs harvested 58%-86% higher CPUE of fat greenling, marbled flounder, stone flounder, mantis shrimp, and swimming crab while catching fewer black rockfish and Asian paddle crab. Blue and white LEDs exhibited similar performance, which could significantly capture more black rockfish, fat greenling, and mantis shrimp and did not affect the catch rates of other species. The effects of LEDs were also size-dependent for certain species, and the catch rates generally increased with the length classes. Taking economic benefits into consideration, the green and red LEDs provided the highest profitability for Rizhao, while green LEDs performed best in Weihai and Yantai. This study is the first investigation on how artificial lights affected the catch rates of trammel nets. The findings of our study illustrated that trammel nets equipped with LEDs could serve as a viable fishing strategy in small-scale trammel net fisheries.	Yu, Mengjie,Liu, Changdong,Zhang, Liyou,Tang, Yanli	Frontiers Media SA	상세보기
  Extraction and characterization of chitin from Oratosquilla oratoria shell waste and its application in Brassica campestris L.ssp	Abstract Mantis shrimp waste (Oratosquilla oratoria) is a good source of chitin. The applicability of microwave-assisted organic acids and proteases for extracting chitin from mantis shrimp shell waste was evaluated, and the extracted-chitin was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). Moreover, the effects of nanochitin on the growth of pak choi (Brassica campestris L.ssp.) were also investigated. The results indicated that alkaline protease (4000 U/g, microwave heating at 60 °C, 10 min) and malic acid (5%, 320 W, 5 min) exhibited excellent potential for deproteinizing and demineralizing shells. The deproteinization and demineralization yields were 92.78% and 94.11%, respectively, and the chitin yield was 15.6%. The extracted-chitin had a highly porous structure and exhibited excellent crystallinity and thermostability compared with chitin prepared by traditional chemical methods. Furthermore, 0.003% nanochitin significantly enhanced photosynthesis, which improved the pak choi fresh weight by 22.94%, and improved the accumulation of isothiocyanates in its leaves. This study provides an alternative approach for the high-value utilization of mantis shrimp waste, and reveals the potential of chitin for application in agricultural production. Highlights A highly efficient method for chitin extraction from mantis shrimp shell waste was developed. The deproteinization products of the method contained abundant valine and phenylalanine. Chitin extracted by this method exhibited better characteristics than that of chemical method. Nanochitin could promote the pak choi growth and improve its flavor. Graphical abstract [DISPLAY OMISSION]	Cui, Dandan,Yang, Jin,Lu, Bosi,Deng, Lansheng,Shen, Hong	Elsevier	상세보기
  IgE Epitope Analysis and Hypo-Immunoreactivity Derivative of Arginine Kinase in Mantis Shrimp (Oratosquilla oratoria)	As the main allergenic food, shrimp can trigger allergic reactions in various degrees. In this study, arginine kinase (AK) was identified as an allergen in Oratosquilla oratoria by LC-MS/MS. The open reading frame of AK was obtained, which included 356 amino acids, and recombinant AK (rAK) was expressed in Escherichia coli. The results of immunological analysis and circular dichroism showed that rAK displayed similar IgG-/IgE-binding activity and structure as native AK. Besides, five IgE linear epitopes of AK were verified by serological analysis, on the basis of which an epitope-deleted derivative was obtained and named as mAK-L. It has been shown that mAK-L displayed hypo-immunoreactivity compared to rAK, and the contents of secondary structures were different. In conclusion, these discoveries enrich the overall understanding of crustacean allergens and epitopes and set the foundations for food allergy diagnosis and immunotherapy. [FIG OMISSION]	Chen, Ye-Xin,He, Xin-Rong,Yang, Shi-Qiang,Huan, Fei,Li, Dong-Xiao,Yang, Yang,Chen, Gui-Xia,Liu, Guang-Ming	American Chemical Society	상세보기
  Spesies Udang yang Ditemukan di Perairan Desa Menco, Wedung, Demak	Wilayah Menco terletak di Kec. Wedung, Kab. Demak dan merupakan salah satu desa penghasil udang.Sebagian besar masyarakat berprofesi sebagai nelayan. Tujuan penelitian adalah untuk mengetahui jenis-jenis udang yang ditemukan di perairan Desa Menco. Pengambilan sampel dilakukan pada tiga titik di perairan Desa Menco selama 3 Minggu, dengan menggunakan alat tangkap wangkong (trap net). Sampel yang diperoleh diidentifikasi dan dianalisis menggunakan 16 karakter morfometrik untuk mengetahui komposisi ukuran tangkapan. Hasil penelitian menunjukkan bahwa terdapat 3 jenis udang dari famili Penaeidae yaitu: Penaeus merguiensis, Penaeus monodon, dan Metapenaeus ensis. Satu jenis dari famili Palaemonidae yaitu Macrobranchium equidens. Dua jenis dari famili Squillidae yaitu: Harpiosquilla raphidea, dan Oratossquilla oratoria. Total sampel yang ditemukan sebanyak 180 sampel, dengan komposisi: Penaeus monodon 60 sampel (33%), Metapenaeus ensis 60 sampel (33%), Harpiosquilla raphidea 27 sampel (15%). Sementara itu, Oratosquilla oratoria ditemukan 20 sampel (11%), Macrobranchium equidens 7 sampel (5%) dan Penaeus monodon 6 sampel (4%). Hasil pengukuran kualitas air menunjukkan suhu perairan 29-30OC, salinitas 14-16 ppt, pH berkisar antara 7,4-7,6 dan DO yang berkisar antara 5,67-5,92 mg/l.？Menco is located in Wedung District, Demak Regency, where most of the people work as fishermen. The purpose of this study was to determine the types of shrimp found in the waters of Menco Village. Sampling was carried out at three points in the waters of Menco Village during 3 weeks, using a wangkong (trap net). The samples obtained were identified and analyzed using 16 morphometric characters to determine the composition of the catch size. The results showed that there were 3 types of shrimp from the Penaeidae family, namely: Penaeus merguiensis, Penaeus monodon, and Metapenaeus ensis. One species from the family Palaemonidae is Macrobranchium equidens. Two species of the Squillidae family are: Harpiosquilla raphidea, and Oratossquilla oratoria. The total samples found were 180 samples, with the composition: Penaeus monodon 60 samples (33%), Metapenaeus ensis was found 60 samples (33%), Harpiosquilla raphidea 27 samples (15%). Meanwhile, Oratosquilla oratoria was found 20 samples (11%), Macrobranchium equidens 7 samples (5%) and Penaeus monodon 6 samples (4%). The results of water quality measurements showed that the water temperature was 29-30OC, salinity was 14-16 ppt, pH ranged from 7.4-7.6 and Dissolved Oxygen ranged from 5.67-5.92 mg/L.	Agung Aditya Rizqi,Taufiq-SPJ Nur,Azizah Ria		상세보기

• 특허정보

  검색결과 1건

  특허정보 목록 - 제목, 등록/출원번호, 출원인, 원문정보

  제목	등록/출원번호	출원인	원문정보
  갑각류 및 양념을 넣어 만든 떡볶이 떡 제조 방법	1020190054648	변성웅	원문정보

• 유용한 해양생물 이야기

  검색결과 1건

  유용한 해양생물 이야기 목록 - 학명, 국명, 생리활성, 원료등록, 특징/이용

  학명	국명	생리활성	원료등록	특징/이용
  Oratosquilla oratoria	갯가재	항산화	식품원료 등록	식품원료 등재