Bibliometric Analysis of Status Quo and Trend of the Research on Duck Based on the Web of Science Database

[Objectives] This study was conducted to understand the current status of duck related research. [Methods] CiteSpace knowledge graph analysis tool, VOSviewer visual analysis software and HistCite citation graph analysis tool were used to analyze the number of publications and subject distribution of duck-related research fields in the Web of Science core collection database. The main countries(regions) and institutions, the main academic journals, the main research scholars, the main research hotspots and their changing trends were used for quantitative analysis. [Results](1) Duck-related research is receiving more and more attention, which further supports ducks’ important significance in the livestock and poultry industry.(2) Countries such as China, the United States, Canada, and France had published more articles in this field, and there was close cooperation between countries.(3) The top two journals with local citations in the duck-related research fields were PLOS ONE and JOURNAL OF VIROLOGY, and the journal with the highest impact factor in 2019 was JOURNAL OF VIROLOGY.(4) High-yield scholars in duck related research fields included Cheng Anchun, Wang Mingshu, Jia Renyong, etc.(5) Infection was a research hotspot in duck-related research. Typical pathogenic microorganisms included Newcastle disease, Avian influenza, and campylobacter.(6) The future trend of duck-related research mainly focuses on breeds, living environment, diseases, and molecular mechanisms. [Conclusions] Based on data from the Web of Science core collection database, this paper provides a complete bibliometric analysis of the current research status of ducks.

Mother knows best:reproductive regulation of caste ratio in a social hemipteran

Dear Editor,The reproductive division of labor between reproductive and non-reproductive castes is regarded as a hallmark of the evolution of eusociality and is vital to the ecological success of social insects(Wilson,1971;Wilson&Holldobler,2005).The social systems of hymenopterans and termites have attracted much attention;however,social organization has also been found in some tiny aphids of the Hemiptera.

Efficient genetic transformation and CRISPR/Cas9-mediated genome editing of watermelon assisted by genes encoding developmental regulators

Cucurbitaceae is an important family of flowering plants containing multiple species of important food plants,such as melons,cucumbers,squashes,and pumpkins.However,a highly efficient genetic transformation system has not been established for most of these species(Nanasato and Tabei,2020).Watermelon(Citrullus lanatus),an economically important and globally cultivated fruit crop,is a model species for fruit quality research due to its rich diversity of fruit size,shape,flavor,aroma,texture.

Reducing human error to improve efficiency of DNA barcoding:the primer case

Since the concept of DNA barcoding was proposed in 2003(Hebert et al.,2003a,b),it has received much attention and become a routine technique in biodiversity research.DNA barcoding is especially valuable in a world with rapid decline in biodiversity as well as experienced taxonomists(Valentini et al.,2009).