Article
Environmental Sciences
Chun Mei Ao, Li Li Shi, Wei Wang, Cheng Gui Wang, Siuming F. Chan
Summary: In this study, two neuroparsin genes (MrNP1 and MrNP2) were cloned from the freshwater shrimp Macrobrachium rosenbergii, and their roles in ovarian development and vitellogenesis were investigated. The results showed that MrNP1 and MrNP2 proteins can stimulate the expression of the MrVg gene, while silencing of these genes suppresses the expression of MrVg, VgR, and CyclinB genes. The coordinated regulatory action between MrNP1 and MrNP2 may be necessary for normal vitellogenesis in M. rosenbergii.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Aude Ratier, Sandrine Charles
Summary: This article discusses the regulatory requirement for bioaccumulation evaluation of chemicals within organisms and the use of toxicokinetic (TK) data to predict internal concentrations. To increase the availability of TK data, researchers have developed an innovative database to support TK modelling.
Article
Environmental Sciences
Matthew D. Taylor, Daniel D. Johnson, Sandra Nilsson, Chun-Yin Lin, Jennifer Braeunig, Jochen Mueller, Karl C. Bowles
Summary: Portunid crabs can accumulate high concentrations of PFASs, with depuration half-lives as high as 40 days. A study on Giant Mud Crab found evidence for depuration of PFOS, PFHxS, and PFOA, with substantial variability in data. These results have implications for assessing and minimizing exposure risk in seafood species.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
Ziqi Guo, Likun Xu, Wei Wang, Wei Chen, Chunyan Ma, Fengying Zhang, Lingbo Ma, Zhiqiang Liu, Keyi Ma
Summary: This study cloned two key genes related to molting in Macrobrachium rosenbergii, examined their gene expression profile, and investigated the toxicological effects of nanomaterial exposure on crustacean molting.
SCIENTIFIC REPORTS
(2023)
Article
Fisheries
Gwang Il Jang, Bo Seong Kim, Su Mi Kim, Yun Kyeong Oh, Jae Ok Kim, Jee Youn Hwang, Soon Jeong Lee, Sung Youl Hong, Mun Gyeong Kwon
Summary: White tail disease is caused by Macrobrachium rosenbergii nodavirus (MrNV) and an extra-small virus (XSV). This study detected MrNV in both adult and post-larval prawns, while XSV was not detected. Although no gross signs of the disease were observed, histopathological changes were found in the muscle of adult and post-larval prawns.
Article
Fisheries
Santiago Hamilton, Jose Filipe Silva, Fabio Costa Filho, Silvio Peixoto
Summary: Passive acoustics monitoring has been used to detect crustacean feeding activity. This study evaluated the sound emission of the giant freshwater prawn during feeding commercial food, identifying the sound structure and parameters. The study found that the prawn emits click sounds while consuming food, with some acoustic parameters varying among size classes.
AQUACULTURE RESEARCH
(2021)
Article
Agriculture, Dairy & Animal Science
Fanzeng Meng, Yiting Wang, Guohao Wang, Tao Hu, La Xu, Kathy F. J. Tang, Weifeng Shi, Fan Zhang, Xuan Dong, Jie Huang
Summary: A variant of the Macrobrachium rosenbergii golda virus (MrGV) was found in Chinese prawns and compared with a variant reported in Bangladesh. Although there is currently no evidence that this variant causes disease, it is important to be vigilant as it may lead to mass death of prawn larvae.
Article
Fisheries
Warachin Gangnonngiw, Malinee Bunnontae, Pattanapon Kayansamruaj, Saengchan Senapin, Jiraporn Srisala, Timothy W. Flegel, Kanokpan Wongprasert
Summary: A novel ssDNA virus, Macrobrachium hepatopancreatic bidnavirus (MHBV), was identified in giant freshwater prawn using metagenomic analysis and de novo assembly. This virus showed circular, eosinophilic inclusions in the nuclei of hepatopancreatic cells. The MHBV genome closely matched the polymerase B gene in the V1 fragment of Bombyx mori bidensovirus 2 (BmBDV2) and belongs to the family Bidnaviridae.
Article
Microbiology
Xuan Dong, Guohao Wang, Tao Hu, Juan Li, Chen Li, Zhi Cao, Mang Shi, Yiting Wang, Peizhuo Zou, Jipeng Song, Wen Gao, Fanzeng Meng, Guoliang Yang, Kathy F. J. Tang, Cixiu Li, Weifeng Shi, Jie Huang
Summary: A novel virus, named infectious precocity virus (IPV), belonging to the family Flaviviridae, was identified in prawns with the iron prawn syndrome (IPS). The discovery of IPV provides new insight into the pathology and sexual maturation in crustaceans, calling for quarantine inspection in transboundary trade of live M. rosenbergii and enhanced surveillance of IPV in aquaculture globally.
Article
Fisheries
Yun Li, Qi Xu, Yuanyuan Gepan, Hong Liu, Jian Su, Xilin Dai
Summary: Toll-like receptors are a family of membrane receptors involved in innate immune responses. Two Toll-like receptors, MrToll1 and MrToll2, were identified in the giant freshwater prawn. They are constitutively expressed in various tissues and play essential roles in regulating immune-related gene expression.
AQUACULTURE REPORTS
(2021)
Article
Microbiology
Dandan Zhou, Shanshan Liu, Guangyu Guo, Xinyi He, Chengguang Xing, Qijin Miao, Gongrui Chen, Xiaolin Chen, Hongyu Yan, Jiamin Zeng, Zhenwen Zheng, Hengwei Deng, Shaoping Weng, Jianguo He
Summary: The study revealed a wide diversity of viruses present in Macrobrachium rosenbergii, and further investigation is needed to understand the association between viruses and diseases in this species.
MICROBIOLOGY SPECTRUM
(2022)
Article
Fisheries
Fanbin Zhan, Shichun Zhou, Fei Shi, Qingqing Li, Li Lin, Zhendong Qin
Summary: The aquaculture industry has faced financial losses due to disease outbreaks, particularly in the Macrobrachium rosenbergii aquaculture industry. Understanding the host's defense mechanism is crucial for providing effective defense measures. This study used RNA-seq technology to investigate the immune pathways and genes related to innate immunity in hemocytes from M. rosenbergii. The results identified differentially expressed genes and revealed their involvement in antibacterial activities against gram-positive bacteria. These findings contribute valuable data for disease prevention and provide a basis for improved prevention strategies.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Article
Physiology
Hui Qiao, Sufei Jiang, Hongtuo Fu, Yiwei Xiong, Wenyi Zhang, Lei Xu, Dan Cheng, Jisheng Wang
Summary: In this study, a gene-editing platform based on CRISPR/Cas9 was established for Macrobrachium nipponense, an important economic crustacean species. The vitellogenin (Vg) gene and the eyeless (Ey) gene were mutated to study their functions in M. nipponense. The establishment of this platform provides a powerful tool for gene function analysis and molecular-assisted breeding.
FRONTIERS IN PHYSIOLOGY
(2023)
Article
Endocrinology & Metabolism
Kai Jiang, Xiang Fang, Ya-Lin Li, Gao-Feng Qiu
Summary: In this study, the Vg gene family in Macrobrachium rosenbergii was comprehensively analyzed. Eight Vg genes were identified, with MrVg1a, 1b, and MrVg2-7 showing different expression patterns in female prawns. MrVg1a and MrVg1b were highly expressed in the hepatopancreas but had low expression in the ovaries, while MrVg2-7 showed high expression in the ovaries. These findings provide new insights into the reproductive development of M. rosenbergii.
GENERAL AND COMPARATIVE ENDOCRINOLOGY
(2023)
Article
Fisheries
Yi Zhuang, Qi Li, Cong Cao, Xiang-Shan Tang, Nu-An Wang, Kun Yuan, Guo-Fang Zhong
Summary: This study found that dietary Bovine lactoferricin significantly improved the growth performance and non-specific immunity of Macrobrachium rosenbergii, with an optimal addition level of 1.5 g/kg.
FISH & SHELLFISH IMMUNOLOGY
(2022)
