...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Detrimental effects of the isopod, Edotia doellojuradoi, on gill morphology and host condition of the mussel, Mytilus edulis platensis
【24h】

Detrimental effects of the isopod, Edotia doellojuradoi, on gill morphology and host condition of the mussel, Mytilus edulis platensis

机译：等足类动物Edotia doellojuradoi对贻贝贻贝的g形态和寄主条件的有害影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

There are many reported associations between mussels and other invertebrates, such as pea crabs, polychae-tes, turbellarians and copepods, which live in their mantle cavities. The boundary between commensalism and parasitism is often indistinguishable because of insufficient knowledge or because the interaction is variable. Preliminary evidence led to a closer examination of the relationship between the mussel, Mytilus edulis platensis, and an isopod, Edotia doellojuradoi, previously described as commensalism. Monthly intertidal samples of mussels were taken from September 2004 to August 2005 at Caleta Cordova Norte (45°43'S, 67°22'W) in southern Argentina and assessed for the prevalence and abundance levels of isopods. Mussels with and without isopods were measured, examined forrnevidence of gill damage and their condition (soft tissue dry weight) was determined. The overall isopod prevalence in mussels was 57.9% and infestation varied with mussel length, with maximum occurence at 30.2 mm (medium-sized mussels). Experimental evidence indicated that the position of the isopod inside the mussel depended on the feeding activity of the mussel. Female isopods were observed grasping the ventral food groove of the gill demibranchs and feeding on the mucous food strand produced by the mussel. Juveniles and males were observed clustered together on the dorsal side of the single female in each occupied mussel, suggesting extended maternal care. Gill damage was observed in 58.2% of mussels at the Argentine site and was significantly associated with isopod occurrence. Categorical regression analysis showed that the most important factor associated with the degree of gill lesions was the number of male and juvenile isopods per mussel, followed by the length of female isopods and the developmental stage of juveniles. Conversely, the degree of gill damage decreased with increasing mussel length. Overall, E. doellojuradoi had a significant effect on mussel condition throughout the year, with low flesh weight in mussels with isopods, except during the austral summer and early autumn. In contrast to previous studies, which concluded that the isopod was a commensal, the present study clearly demonstrates that E. doellojuradoi is a parasite of M. edulis platensis. Other symbiotic interactions formerly classified as commensal might not be innocuous on further investigation, especially if samples are taken at multiple sites and at different times of the year.
机译：贻贝与其他无脊椎动物之间存在着许多联系，例如生活在其地幔腔中的豌豆蟹，多毛羚，turbellarians和co足类。由于知识不足或相互作用是可变的，所以commensalism和寄生主义之间的界限通常是无法区分的。初步证据导致对贻贝（Mytilus edulis platensis）和等脚足类动物（Edotia doellojuradoi）之间的关系进行了更深入的研究，以前称其为共鸣。 2004年9月至2005年8月，在阿根廷南部的Caleta Cordova Norte（北纬45°43'，西经67°22'）采集了贻贝的潮间带月度样品，并评估了其等足动物的患病率和丰度水平。测量有或没有异足动物的贻贝，检查g损害的证据，并确定其状况（软组织干重）。贻贝的总等足动物患病率为57.9％，侵扰随贻贝长度而变化，最大发生在30.2毫米（中型贻贝）。实验证据表明，等足动物在贻贝内部的位置取决于贻贝的摄食活性。观察到雌性等足动物抓住grasp的半食物腹的食物槽，并以贻贝产生的粘液食物为食。在每个被占领的贻贝中，观察到少年和雄性聚集在雌性的背侧，这表明产妇得到了进一步的照顾。在阿根廷产地的贻贝中有58.2％观察到的破坏，这与等足动物的发生显着相关。分类回归分析表明，与g病危害程度相关的最重要因素是每个贻贝的雄性和幼年等足类动物数量，其次是雌性等足类动物的长度和幼体的发育阶段。相反，腮损害程度随贻贝长度的增加而降低。总体而言，除南方夏季和秋季初秋外，E。doellojuradoi全年都对贻贝状况产生重大影响，带有异足类的贻贝的肉重较低。与先前的研究得出的结论是等足动物是共生的相反，本研究清楚地表明，doellojuradoi大肠杆菌是可食的M. edulis platensis的寄生虫。在进一步研究中，以前被归类为共生的其他共生相互作用可能并非无害，尤其是如果在一年中的多个地点和不同时间进行采样。

著录项

  • 来源
    《Marine biology》 |2009年第11期|2369-2378|共10页
  • 作者

    Hector E. Zaixso; Paula Stoyanoff; Damian G. Gil;

  • 作者单位

    Institute de Desarrollo Costero, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Ciudad Universitaria, Km 4 (9000) Comodoro Rivadavia, Chubut, Argentina Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Buenos Aires, Argentina Departamento de Gestion Ambiental, FHyCS, UNPSJB, Chubut, Argentina;

    Institute de Desarrollo Costero, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Ciudad Universitaria, Km 4 (9000) Comodoro Rivadavia, Chubut, Argentina Departamento de Biologia General, FCN, UNPSJB, Chubut, Argentina;

    Institute de Desarrollo Costero, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Ciudad Universitaria, Km 4 (9000) Comodoro Rivadavia, Chubut, Argentina Departamento de Gestion Ambiental, FHyCS, UNPSJB, Chubut, Argentina Departamento de Biologia General, FCN, UNPSJB, Chubut, Argentina;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号