Asymmetry and variation in keratella tropica
โ Scribed by J. Green
- Book ID
- 104615365
- Publisher
- Springer
- Year
- 1980
- Tongue
- English
- Weight
- 338 KB
- Volume
- 73
- Category
- Article
- ISSN
- 1573-5141
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โฆ Synopsis
Keratella tropica usually has two posterior spines. Both may vary in length, but the left is always shorter than the right. Sometimes the left spine is absent. Spine length varies with the length of the lorica, but there are other, external, influences.
Three separate lines of evidence indicate that factors which promote spine length are related in some way to the presence of calanoid copepods.
๐ SIMILAR VOLUMES
The literature on variation inKerutella is reviewed. The old idea of a thorough endogenous control has to be rejected, but internal factors ought to play a certain role beside influences from current and previous environment. In certain cases there is probably a succession of genetically different c
Morphological form variation in a loricate rotifer, Keratella tropica A P ~T E I N is decribed. Form variation in this rotifer involves appearance and development of the left post,ero-lateral spine. The right postero-lateral spine varies, too. It increases with increasing length of lorica and left p