Agelenids of the World

Systematics and Taxonomy of Agelenidae, a Worldwide distributed Spider Family

Doubling of prosoma in larva of Tegenaria atrica C. L. Koch (Agelenidae)

Publication Type:Journal Article
Year of Publication:2002
Authors:L. Jacunski, Templin, J., Napiorkowska, T.
Journal:Bulletin of the Polish Academy of Sciences Biological Sciences
Volume:50
Pagination:85-87
Date Published:2002
ISBN Number:0867-1656
Keywords:[Diseases and disorders / Prosoma doubling in larva / ] [Temperature /, / Embryo development relations]., Abiotic factors, Development, Diseases and disorders, embryo development] [Embryo development / / Temperature effects], General morphology, Life cycle and development, Parasites, Physical factors, Tegenaria atrica (Araneae)., Tegenaria atrica [Prosoma / / Doubling in larva, temperature effects on
Abstract:

As a result of experiments carried out on embryos of Tegenaria atrica C.L.Koch incubated at alternating temperatures, a larva with doubled prosoma was obtained. One of them showed normal size and typical structure, while the other was smaller in size and showed considerable changes in the number, arrangement and structure of appendages. A histological analysis of the doubled prosoma revealed the presence of two independent brains and two laterally connected subesophageal nervous masses.

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