Agelenids of the World

Systematics and Taxonomy of Agelenidae, a Worldwide distributed Spider Family

Anomalies of the abdomen in Tegenaria atrica C. L. Koch (Araneae Agelenidae)

Publication Type:Journal Article
Year of Publication:2002
Authors:L. Jacunski
Journal:Bulletin of the Polish Academy of Sciences Biological Sciences
Date Published:2002
ISBN Number:0867-1656
Keywords:Abiotic, adult, Development, effect on opisthsoma anomalies in adult]., Evolution, factors, General morphology, Life cycle and development, Opisthosoma anomalies, Parasites diseases and disorders, phylogenetic significance] [Embryo development / /, Physical factors, significance] [Diseases and disorders / Anomalies / ] [Temperature / /, Systematics, Tegenaria atrica (Araneae)., Tegenaria atrica [Opisthosoma / / effect of temperature during embryo, temperature during embryo development, Temperature effect on opisthosoma anomalies in adult] [Phylogeny / /

By exposing embryos of Tegenaria atrica C. L. Koch to alternate temperatures of 12[degree]C and 32[degree]C, structural anomalies were caused in all abdominal metameres of that spider. The changes in the shape of abdomen and the persistence of stump appendages in the prothelar and postthelar zone of the abdomen are considered atavistic characteristics related to the phylogenetic past of Arachnida.

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