On the Feeding of the Hagfish Myxine Glutinosa in the North Sea
On the Feeding of the Hagfish Myxine Glutinosa in the North Sea
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北海粘盲鳗的摄食
DOI：
10.1017/s0025315400024413
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发表时间：
1978
影响因子：
1.2
通讯作者：
R. Shelton
中科院分区：
文献类型：
--
作者：
R. Shelton
本文报道了多粘菌类圆口目，其中盲鳗Myxine coronosa L.是最著名的例子之一，具有独特的生物学意义，是一组无颌脊椎动物的代表，它们可能起源于奥陶纪的翼形介形动物（Nybelin，1973）。比较解剖学家和生理学家对它们进行了大量的研究，但生态学家却有些忽视。例如，关于它们正常进食生物学的关键信息很少。其中一个原因可能是，尽管盲鳗在当地可能极为丰富（它们的主要生境要求是稳定、柔软的泥质沉积物和超过31%的盐度（Gustafson，1935年）），但大多数试探性捕捞和生物取样方案往往会遗漏它们。这是因为底栖生物取样技术往往不适合捕捉能够游泳和打洞的大型活跃生物，而且，除非被捕获物阻挡，否则大多数英国商业渔民使用的拖网的网囊网目尺寸很容易让最大的盲鳗逃脱。然而，苏格兰农业和渔业部（D.A.F.S.）为了调查北海的深水粉红虾（Pandalus borealis Krøyer）种群，在船上安装了小网眼的网囊覆盖物，发现渔获物经常包括少量的盲鳗，推测是在靠近海底游泳时捕获的，或者可能是在被埋在沉积物表面时捕获的。本研究主要是基于在D.A.F.S.期间收集的盲鳗的检查。1975年和1976年的Pandalus调查。其余的材料是J. B博士好心提供的。布坎南的鸽子海洋实验室在卡勒科茨，诺森伯兰郡。
The myxinoid cyclostomes, of which the hagfish Myxine glutinosa L. is one of the best known examples, are of unique biological interest as representatives of a group of jawless vertebrates which probably had their origin in the pteraspidomorph ostracoderms of the Ordovician era (Nybelin, 1973). They have been much studied by comparative anatomists and physiologists but somewhat neglected by ecologists. There is, for instance, very little critical information on their normal feeding biology. Perhaps one reason for this is that, although hagfish may be extremely abundant locally (their principal habitat requirements are stable, soft muddy sediments and a salinity in excess of 31 %, (Gustafson, 1935)), they tend to be missed by most exploratory fishing and biological sampling programmes. This is because benthic sampling techniques are often ill-adapted for the capture of large active organisms capable of swimming and burrowing and because, unless blocked by the catch, the cod-end mesh sizes of the trawls used by most British commercial fishermen would easily permit the escape of even the largest hagfish. However, the research otter trawls used by the Department of Agriculture and Fisheries for Scotland (D.A.F.S.) for surveying the North Sea stocks of the deep water pink shrimp, Pandalus borealis Krøyer, are fitted with cod-end covers of small mesh, and it is found that the catches frequently include small numbers of hagfish, presumably caught while swimming close to the bottom, or possibly when buried in the surface of the sediments. The present study is largely based on the examination of hagfish collected during the D.A.F.S. Pandalus surveys of 1975 and 1976. The remaining material was kindly provided by Dr J. B. Buchanan of the Dove Marine Laboratory at Cullercoats, Northumberland.