English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Background  The schizothoracine fishes, an excellent model for several studies, is a dominant fish group of the Qinghai-Tibet Plateau (QTP). However, species populations have rapidly declined due to various factors, and infection with  Echinorhynchus gymnocyprii  is cited as a possible factor. In the present study, the molecular characteristics of  E. gymnocyprii  in four species of schizothoracine fishes from the QTP were explored.    Methods  We investigated the infection status of  E. gymnocyprii  in 156 schizothoracine fishes from the upper Yangtze River, upper Yellow River, and Qinghai Lake in Qinghai Province, China. The complete internal transcribed spacer (ITS) of the ribosomal RNA (rRNA) gene and part of the mitochondrial cytochrome  c  oxidase subunit 1 ( cox 1) gene of 35  E. gymnocyprii  isolates from these fishes were sequenced and their characteristics analyzed. In addition, we inferred phylogenetic relationships of the  E. gymnocyprii  populations based on the rRNA-ITS and  cox 1 sequences.    Results  The total prevalence of  E. gymnocyprii  in schizothoracine fishes was 57.69% (90/156). However, the prevalence among different species as well as that across the geographical locations of the schizothoracine fishes was significantly different. The results of sequence analysis showed that the four  E. gymnocyprii  populations from different hosts and regions of Qinghai Province were conspecific, exhibiting rich genetic diversity. Phylogenetic analysis based on rRNA-ITS and  cox 1 sequences supported the coalescence of branches within  E. gymnocyprii ; the  cox 1 gene of  E. gymnocyprii  populations inferred some geographical associations with water systems. In addition, three species of schizothoracine fishes were recorded as new definitive hosts for  E. gymnocyprii .    Conclusions  To the best of our knowledge, this is the first molecular description of  E. gymnocyprii  populations in schizothoracine fishes from the Qinghai-Tibet Plateau that provides basic data for epidemiological surveillance and control of acanthocephaliasis to protect endemic fish stocks.

parasites and vectors

Prevalence and genetic diversity of Echinorhynchus gymnocyprii (Acanthocephala: Echinorhynchidae) in schizothoracine fishes (Cyprinidae: Schizothoracinae) in Qinghai-Tibetan Plateau, China