Observations on the embryology of an aquatic gastrotrich, lepidodermella squammata (dujardin, 1841)
✍ Scribed by Martin Sacks
- Publisher
- John Wiley and Sons
- Year
- 1955
- Tongue
- English
- Weight
- 814 KB
- Volume
- 96
- Category
- Article
- ISSN
- 0362-2525
No coin nor oath required. For personal study only.
✦ Synopsis
FIFTY-F.IQHT FIQUFXK
Most of the studies concerning the Gaxtmtriclia have been devoted to their taxonomy o r morphology. F c x ill~cstigi~tions of their embryology have lweii undei-takcii.
Ludwig (1875) first observed cleavage in a gastrotrich egg, but it was not until de Eeauc1iaiiil)'s \t--orlr on ATTeogossrn in 1929 that the basic clcavagp pattern a i d some of thc details of the later cnihryology bccaine li-rzomn. Brunsoii ('49) studied the embryo a i d C'r'inptouotus tachyne us. 111 view of the incompleteness of the Irnowledge of the cmbrpology of this groiip, it was decided to study the embryology of L. .cqziriniinatii in the h o p that some indication of the origin and rclationship of the Gastrotricha might he found. of L "2' i cl o (7 ('7-)I? e 11 ci s (1 MATERI,\LR AN0 ;LIETROI)R Qastrotricha were collected and then cultivated in 0.1% malted milk sohition according to the procedure dcwrihd bp Brunson ( '49). As previously reported by Goldherg ( '49), p r e clones of L. syuammc coiild not be established successfully in the malted milk medium. Further investigation ' P a r t of a thesis completed uiidrr the direction of P r o f . M. 12. Mattesoii a i d sulnnitted in partial fulfillment of the requirements for tlie degree of Doctor of Philosophy, TJniversity of Illinois, 1953.