Thecamoebous moss-rhizopods from New Zealand
Thecamoebous moss-rhizopods from New Zealand
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来自新西兰的 Thecamoebous 苔藓根足类动物
DOI：
10.1007/bf02519268
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发表时间：
1948
期刊：
影响因子：
2.6
通讯作者：
A. Groot
中科院分区：
文献类型：
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作者：
H. R. Hoogenraad;A. Groot
几年前，我们调查了从欧洲几个地方购买的一些干燥苔藓样品中的Thecamoebous Rendezvous豆荚。这次调查的结果，部分尚未发表，是相对安全的，并促使我们（1938/1939年）以同样的方式从欧洲以外的地方采集了一些苔藓样品。它们分别采自新西兰（19）、西伯利亚（8）、中国（1）、非洲（1）、南美洲（11）和北美洲（17）的57个地点。这些我们进行了更深入的研究，并确定了不同物种在其中发生的相对频率。这个频率，我们表示在数字从1到6，1表示非常罕见，6表示非常常见。在其他样品中，我们只观察到少数几个亚硝酸盐离子，并注意到其中发生的物种，这些物种也被列入物种普查。所研究的样品属于泥炭藓目的一个非常小的部分，对于较大的部分属于真藓目。它们的采集是为了苔藓学，而不是为了动物学，因此，从干燥样品中进行的Rupodan试验中，无法得出任何确定性的结论，即在新鲜条件下生活在苔藓中的物种。特别是在非常潮湿的地方生长的泥炭藓物种可能被收集器挤出以除去多余的水;显然在这种情况下，或多或少的更多数量的测试也被除去。另一方面，样品中实际存在的测试整体上保存在极好的条件下，尽管事实上较大的部分是多年前收集的，并且此后一直保持干燥状态。这不仅适用于其测试是由异质体组成的物种，而且也适用于其测试存在的独特体或呈现透明结构的物种。材料的操作相对简单。在短时间内，将其在水中煮沸以除去附着的空气，用手按压冷却，并在普通盖玻片中研究沉淀物;永久制备的
Some years ago we investigated the Thecamoebous Rhizopods in a number of dried moss samples obtained by purchase f rom several localities in Europe. The results of this investigation, part ly unpublished yet, were relatively sat isfactory and induced us (in 1938/'39) to t reat some moss samples f rom outside Europe in the same manner. They were collected in New Zealand (19), Siberia (8), China (1), Afr ica (1), South America (11) and North America (17), in all 57 localitieK Some of the samples proved ra ther rich in remains of Rhizopods; these we studied more thoroughly and determined the relative frequency of the different species occurring in it. This frequency we expressed in numbers varying f rom 1 to 6, 1 meaning very rare, 6 very common. Of the other samples we observed only a few preparat ions and noted the species, occurring in it, which were also entered in the general survey of the species. The samples studied belonged for a very small par t to the Sphagnales, for f a r the greater par t to the Bryales. They were collected with bryological, not with zoological purposes, and consequently f rom the Rhizopodan tests occurring in the dry samples a conclusion as to the species which lived in the mosses in a fresh condition cannot be drawn with any degree of certainty. I t is possible that especially Sphagnum species growing in very wet places were squeezed out by the collector to remove the redundant water ; obviously in such a case a more or less greater number of the tests were also removed. On the other hand, the tests actually present in the samples were in the whole preserved in an excellent condition, notwithstanding the fact that the greater par t had been collected many years ago and had since been kept in a dry state. This applies not only to the species the tests of which are composed of xenosomes, but also to those the tests of which existed of idiosomes or presented a hyaline structure. The manipulation of the material was relatively simple. For a short time it was boiled up in water to remove the adhering air, a f te r cooling pressed out with the hand and the sediment studied in ordinary cover-glass preparat ions; permanent-prepa-