PILOBOLUS SPP AND TRANSLATION OF INFECTIVE LARVAE OF DICTYOCAULUS-VIVIPARUS FROM FAECES TO PASTURES
PILOBOLUS SPP AND TRANSLATION OF INFECTIVE LARVAE OF DICTYOCAULUS-VIVIPARUS FROM FAECES TO PASTURES
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DOI：
10.1038/193353a0
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发表时间：
1962-01-01
期刊：
影响因子：
64.8
通讯作者：
ROBINSON, J
中科院分区：
文献类型：
--
作者：
ROBINSON, J
Dictyocaulus感染的问题之一是感染幼虫从粪便传播到牧草：幼虫没有迁徙能力，放牧牛避开粪便附近的草。胎生寄生虫Pilobolus spp.孢子管团的粪便经常大量生长。(藻类：毛霉目)大约在幼虫发育成有感染性的形式并迁移到粪便表面的时候。这种霉菌的一个特征是整个孢子囊，包括成熟的孢子，猛烈地排到邻近的牧草上，达到6英尺高。距离8 1/2英尺。在静止的空气中。在光的影响下，蠕虫幼虫的活动明显增加，它们在水面上移动时偶尔会采取直立的姿势，用前端寻找向上的支撑。在这些条件下，它们爬到孢子囊的上表面，在顶部观察到多达50个。当孢子囊排出时，幼虫也被抛向空中；在实验室里，他们在4英尺高的地方被发现。在野外实验中，最高可达10英尺。从粪便中，-E.V.L.
One of the problems ofDictyocaulusinfestation is the spread of infective larvae from faeces to herbage: the larvae have no powers of migration and grazing cattle avoid the grass adjacent to faeces.During laboratory culture ofD. viviparusthere often occurs an abundant growth on the faeces of sporangiophores ofPilobolusspp. (Phycomycetes: Mucorales) at about the time when the larvae develop to the infective form and migrate to the surface of the faeces. A characteristic of this mould is the violent discharge of the whole sporangium, containing the ripe spores, on to the neighbouring herbage, reaching a height of 6 ft. and a distance of 8 1/2 ft. in still air. Under the influence of light, there is a marked increase in activity of the worm larvae, which move over the surface occasionally adopting an erect posture in which they search for an upward support with their anterior ends. In these conditions they climb to the upper surface of a sporangium, as many as 50 having been observed on the top. When the sporangium is discharged, the larvae are thrown into the air as well; in the laboratory they were recovered at 4 ft. and in a field experiment, up to 10 ft. from the faeces.-E.V.L.