伊朗里海安扎利泻湖一种本地鱼类（闪光鲃）和一种外来鱼类（贝氏餐条）的寄生虫感染

Parasitic Infection of an Endemic Fish (Blicca bjoerkna) and an Exotic Fish (Hemiculter beucisculus) In Anzali Lagoon, Caspian Sea, Iran.

作者信息

Pazooki J, Goorabzarmakhi F Tajbakhsh, Masoumian M

机构信息

Department of Marine Biology, Faculty of Biological Sciences, Shahid Beheshti University, G. C., Tehran, Iran.

出版信息

Iran J Parasitol. 2011 Aug;6(3):66-73.

PMID:22347299

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3279886/

Abstract

BACKGROUND

In Anzali Lagoon, there are some endemic and exotic fishes. The present study was conducted to compare the parasitic fauna of Blicca bjeorkna, as an endemic fish and Hemiculter leucisculus, as an introduced fish to the lagoon.

METHODS

A parasitological investigation was done on 78 specimens of B. bjoerkna and 114 of H. leucisculus. The fishes were collected from August 2009 to April 2010 by the electro fishing from Anzali Lagoon.

RESULTS

Eleven parasites species were found in 192 fish samples. The prevalence and mean intensity of parasites in each host were as follows: Parasites from B. bjorkna were Trichodina perforata (53.85%); Myxobolus musayevi (27.19%, 1±0.79); Dactylogyrus difformis (88.05%, 8±7.24) and D. sphyrna (5.18%, 0.95±0.51), Diplostomum spataceum (98.72%, 9.51±9.01), Posthodiplostomum cuticula (15.38%, 4.25±2.5), Ripidocotyle sp. (1.28%, 2±0.74); Contracaecum osculatum (17.95%, 1.64±0.79), Philometra rischta (12.8%, 1.4±0.54), and Raphidascaris acus (1.04%, 0.03±0.26). The H. leucisculus were infected with T. perforata (27.19%), D. spataceum (7.89%, 1.33±0.54), Ps. tomentosa (7.02%, 1.62±0.49) and R. acus (0.88%, 3±0.28). B. bjoerkna was presented as a new host for M. musayevi and C. osculatum, while H. leucisculus was introduced as a new host for T. perforata and Ps. tomentosa.

CONCLUSION

The prevalence of parasites was significantly more in native fish than that of exotic fish (P<0.05). This reduction in parasitic infection in H. leucisculus may be due to its immune system resistance, well adaptation to the new environment, host-specific limitation for endemic parasites and disability of introduced parasite to complete its life cycle in the new host as well.

摘要

背景

在安扎利泻湖，存在一些本地鱼类和外来鱼类。本研究旨在比较本地鱼类比氏雅罗鱼和引入该泻湖的外来鱼类麦穗鱼的寄生虫区系。

方法

对78条比氏雅罗鱼标本和114条麦穗鱼标本进行了寄生虫学调查。这些鱼于2009年8月至2010年4月通过电捕鱼法从安扎利泻湖采集。

结果

在192个鱼类样本中发现了11种寄生虫。每种宿主中寄生虫的感染率和平均感染强度如下：比氏雅罗鱼的寄生虫有穿孔车轮虫（53.85%）；穆氏粘体虫（27.19%，1±0.79）；畸形指环虫（88.05%，8±7.24）和戟形指环虫（5.18%，0.95±0.51），宽体复口吸虫（98.72%，9.51±9.01），表皮后双盘吸虫（15.38%，4.25±2.5），裂头绦虫属（1.28%，2±0.74）；瘤形异尖线虫（17.95%，1.64±0.79），里氏费洛梅线虫（12.8%，1.×0.54），以及尖锐绕体线虫（1.04%，0.03±0.26）。麦穗鱼感染了穿孔车轮虫（27.19%），宽体复口吸虫（7.89%，1.33±0.54），绒毛嗜子宫线虫（7.02%，1.62±0.49）和尖锐绕体线虫（0.88%，3±0.28）。比氏雅罗鱼被发现是穆氏粘体虫和瘤形异尖线虫的新宿主，而麦穗鱼被发现是穿孔车轮虫和绒毛嗜子宫线虫的新宿主。