Agelenids of the World

Systematics and Taxonomy of Agelenidae, a Worldwide distributed Spider Family

Interesting cases of polymely in Tegenaria atrica C. L. Koch (Agelenidae)

Publication Type:Journal Article
Year of Publication:2002
Authors:L. Jacunski, Napiorkowska, T., Templin, J., Tesznar, L.
Journal:Bulletin of the Polish Academy of Sciences Biological Sciences
Date Published:2002
ISBN Number:0867-1656
Keywords:Abiotic factors, by thermal treatment] [Diseases and disorders / Teratology / Larval, Development, disorders, Larval polymely teratology induction by thermal treatment of embryo]., Life cycle and development, Parasites diseases and, Physical factors, polymely induction by thermal treatment of embryo] [Temperature / /, Tegenaria atrica (Araneae)., Tegenaria atrica [Embryo development / / Polymely teratology induction

The paper brings a description of two individuals of Tegenaria atrica C.L. Koch, in which polymely was experimentally induced by heating the embryos with alternating temperatures of 14[degree]C and 32[degree]C. In one case the increase in the number of appendages was associated with simultaneous increase in the number of mid-gut caeca. A peculiarity found in the other monster was the absence of epimorphic abilities in its polymelic appendage. A close histological and anatomical analysis of the two monsters has verified the rule that the best indicator of any developmental changes are disturbances in the neuromerism of the nervous system. Other organs, particularly those of non-metameric origin, can exhibit a very pronounced morphological stability.

URL:<Go to ISI>://ZOOREC:ZOOR13900003411
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