Silk-producing organs of ecribellate and cribellate nymphal stages in the life cycle of the spider Austrochilus sp. (Araneae: Austrochilidae). Notes on the transformation of anterior median spinnerets into the cribellum

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F16%3A43886881" target="_blank" >RIV/44555601:13440/16:43886881 - isvavai.cz</a>

Výsledek na webu

<a href="https://zenodo.org/record/834179#.WXb7IOSQx9A" target="_blank" >https://zenodo.org/record/834179#.WXb7IOSQx9A</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Silk-producing organs of ecribellate and cribellate nymphal stages in the life cycle of the spider Austrochilus sp. (Araneae: Austrochilidae). Notes on the transformation of anterior median spinnerets into the cribellum

Popis výsledku v původním jazyce

During its life cycle, the cribellate spider Austrochilus sp. goes through the ecribellate nymphal, or spiderling, stage ( = the first instar, after leaving the egg sac), which has three pairs of spinnerets: its spigots are connected to Glandulae ampulaceae major, Glandulae ampullaceae minor, Glandulae piriformes, and Glandulae aciniformes. Such a spinning apparatus allows spiderlings to make draglines, attachment discs, and silk for the moulting platform. The cribellum, just like the calamistrum, is not developed in this stage. In its place, i.e. at the front of the spinnerets, is the precribellum, which is similar to spinnerets in its shape - two protuberances divided by a groove and the presence of spigots that look like setae -, but the microstructure of the surface of their cuticle is similar to the cribellum. The spinning apparatus of Austrochilus sp. shows one possible way in which the transformation of anterior median spinnerets into the cribellum could have occurred during the evolution of silk-producing organs. In the following (second) nymphal stage, the cribellum, the calamistrum, and also the paracribellum are developed. Spiders in this stage are capable, after dispersal, of weaving complete webs which serve as snares as well as retreats. The spigots of the paracribellum are on the posterior median and posterior lateral spinnerets and the fibres they emit form one of the components of cribellum thread support lines.

Název v anglickém jazyce

Silk-producing organs of ecribellate and cribellate nymphal stages in the life cycle of the spider Austrochilus sp. (Araneae: Austrochilidae). Notes on the transformation of anterior median spinnerets into the cribellum

Popis výsledku anglicky

During its life cycle, the cribellate spider Austrochilus sp. goes through the ecribellate nymphal, or spiderling, stage ( = the first instar, after leaving the egg sac), which has three pairs of spinnerets: its spigots are connected to Glandulae ampulaceae major, Glandulae ampullaceae minor, Glandulae piriformes, and Glandulae aciniformes. Such a spinning apparatus allows spiderlings to make draglines, attachment discs, and silk for the moulting platform. The cribellum, just like the calamistrum, is not developed in this stage. In its place, i.e. at the front of the spinnerets, is the precribellum, which is similar to spinnerets in its shape - two protuberances divided by a groove and the presence of spigots that look like setae -, but the microstructure of the surface of their cuticle is similar to the cribellum. The spinning apparatus of Austrochilus sp. shows one possible way in which the transformation of anterior median spinnerets into the cribellum could have occurred during the evolution of silk-producing organs. In the following (second) nymphal stage, the cribellum, the calamistrum, and also the paracribellum are developed. Spiders in this stage are capable, after dispersal, of weaving complete webs which serve as snares as well as retreats. The spigots of the paracribellum are on the posterior median and posterior lateral spinnerets and the fibres they emit form one of the components of cribellum thread support lines.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10613 - Zoology

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Israel Journal Of Entomology

ISSN

0075-1243

e-ISSN

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Svazek periodika

2017

Číslo periodika v rámci svazku

47

Stát vydavatele periodika

IL - Stát Izrael

Počet stran výsledku

13

Strana od-do

21-33

Kód UT WoS článku

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EID výsledku v databázi Scopus

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