Epimorphosis and repair processes of schistomelic pedipalps and walking appendages in <Emphasis Type="Italic">Tegenaria atrica</Emphasis> (Araneae,Agelenidae) |
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Authors: | Teresa Napiórkowska Lech Jacuński Julita Templin |
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Institution: | (1) Department of Invertebrate Zoology, Institute of General and Molecular Biology, Nicolaus Copernicus University, Gagarina 9, 87-100 Toruń, Poland |
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Abstract: | Experimental studies of regeneration and repair processes of schistomelic walking legs and pedipalps in the early postembryonal
stages of Tegenaria atrica were carried out in two parts. In the first part changes in the structure of appendages were produced by exposing the developing
embryos to alternating temperatures (14 and 32°C, changing every 12 hours) as teratogenic factor. In the second, principal,
part of studies after amputating a given fragment of a larval schistomelic appendage the appearance, then the growth and development
of the external regenerates were observed. The completion of epimorphosis of the pedipalps followed at nymph IV stage (after
four post-larval moults) that of the walking appendages in most cases at nymph V stage (after five post-larval moults). In
control spiders repair processes were noted, which proceeded at a rate comparable to regeneration processes. |
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Keywords: | Tegenaria atrica Agelenidae temperature anomaly schistomely epimorphiosis regeneration |
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