Site preference of fish myxosporeans in the gill
Site preference of fish myxosporeans in the gill
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DOI：
10.3354/dao048197
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发表时间：
2002-04-05
影响因子：
1.4
通讯作者：
Molnár, K
中科院分区：
文献类型：
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作者：
Molnár, K
除了孢子的形态和大小特征外，指出确切的位置和组织特异性对于区分属于鳃寄生鱼（粘孢子）组的大量物种也是必不可少的。根据作者的观察，碘泡虫、亨内古亚虫和Thelohanellus物种具有严格的组织特异性，对上皮、结缔组织、软骨或血管组织具有亲和力的物种通常出现在鳃器内严格定义的位置。有些种类通常在鳃的鳃板中形成原质团，另一些在鳃丝中形成原质团。还有一些种类的原质团是在鳃丝基部或鳃弓中发育的。本文作者区别了在鳃板中发育的原质团的板间-上皮型和板内-血管型，而不是普遍接受但容易引起误解的术语“板内”和“板间”。在鳃丝中发育的疟原虫的情况下，可分为鳃内血管型和鳃内软骨型。关于在鳃内发育的部位，基间质团的位置和在软骨基质、结缔组织或鳃弓血管中发育的质团的位置与上述类型有很好的区别。不同类型及其变化在组织学插图中显示。
In addition to the morphological and size characteristics of the spores, indicating the exact location and tissue specificity is also essential for differentiation of the large number of species belonging to the group of gill-parasitic fish, the myxosporeans. According to the observations of the present author, Myxobolus, Henneguya and Thelohanellus species are characterised by strict tissue specificity, and species showing affinity to the epithelium, connective tissue, cartilage or vascular tissue usually occur in a strictly defined location within the gill apparatus. Some of the species typically form plasmodia in the lamellae of the gill and others in the gill filaments. Yet other species develop their plasmodia at the base of the gill filament or in the gill arch. Instead of the generally accepted but misleading terms 'intra-' and 'interlamellar', the present author distinguishes interlamellar-epithelial and intralamellar-vascular types in the case of plasmodia developing in the gill lamellae, and intrafilamental-epithelial, intrafilamental-vascular and intrafilamental-chondroidal types in the case of plasmodia developing in the gill filaments. Regarding site of development within the gill, the location of basifilamental plasmodia and that of plasmodia developing in the cartilaginous matrix, connective tissue or blood vessels of the gill arch are well distinguishable from the above types. The different types and their variations are shown in histological illustrations.