Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 23-37 |
| Number of pages | 15 |
| Journal | Archiv fur Hydrobiologie |
| Volume | S114 |
| Publication status | Published - 1996 |
| Externally published | Yes |
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Microevolutionary processes in Euglena pisciformis : Genetic drift or adaptation? / Zakrys, Bozena; KUCHARSKI, Robert.
In: Archiv fur Hydrobiologie, Vol. S114, 1996, p. 23-37.Research output: Contribution to journal › Article
TY - JOUR
T1 - Microevolutionary processes in Euglena pisciformis
T2 - Genetic drift or adaptation?
AU - Zakrys, Bozena
AU - KUCHARSKI, Robert
PY - 1996
Y1 - 1996
N2 - In natural populations of Euglena pisciformis KLEBs a high degree of genetic polymorphism is maintained among the clones, (proved by using analysis of restriction fragment length polymorphism - RFLP method) as a result of intensive microevolutionary processes. It seems that the evolution is bidirectional and is the result of two types of reproductive strategies by which the organism adapts to life in a highly variable environment. The first is based on the protection of dividing stages via the formation of thick slime envelopes (protecting them from drastic changes of the environment and from drought) at the expense of the rate of cell division. The second promotes an expansive population development without protecting even a small number of cells, in case of a sudden occurrence of drought or unfavourable changes in physical and chemical conditions. The coexistence of genetically distinct clones in an astatic container representing various strategies of life and reproduction increases the chances of species survival.
AB - In natural populations of Euglena pisciformis KLEBs a high degree of genetic polymorphism is maintained among the clones, (proved by using analysis of restriction fragment length polymorphism - RFLP method) as a result of intensive microevolutionary processes. It seems that the evolution is bidirectional and is the result of two types of reproductive strategies by which the organism adapts to life in a highly variable environment. The first is based on the protection of dividing stages via the formation of thick slime envelopes (protecting them from drastic changes of the environment and from drought) at the expense of the rate of cell division. The second promotes an expansive population development without protecting even a small number of cells, in case of a sudden occurrence of drought or unfavourable changes in physical and chemical conditions. The coexistence of genetically distinct clones in an astatic container representing various strategies of life and reproduction increases the chances of species survival.
UR - https://eurekamag.com/research/009/021/009021174.php
M3 - Article
VL - S114
SP - 23
EP - 37
JO - Archiv fur Hydrobiologie
JF - Archiv fur Hydrobiologie
SN - 1863-9135
ER -