Sexual dimorphism in venom gland morphology in a sexually stinging scorpion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00098194" target="_blank" >RIV/00216224:14310/17:00098194 - isvavai.cz</a>
Result on the web
<a href="https://academic.oup.com/biolinnean/article-abstract/122/2/429/4065459" target="_blank" >https://academic.oup.com/biolinnean/article-abstract/122/2/429/4065459</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/biolinnean/blx067" target="_blank" >10.1093/biolinnean/blx067</a>
Alternative languages
Result language
angličtina
Original language name
Sexual dimorphism in venom gland morphology in a sexually stinging scorpion
Original language description
Males of several scorpion species possess bigger telsons than females. In at least some of these species, males repeatedly sting females during mating. This behaviour (‘sexual sting’) is likely correlated with a sexual dimorphism in telson and venom gland size. In sync with natural selection theory, females possess bigger venom glands because females need more nutrients for their offspring. Hence, we hypothesize that this sexual dimorphism in venom gland size evolved under sexual selection. We investigated the morphometrics and morphology of male and female telsons and venom glands of the sexually stinging scorpion Euscorpius alpha Caporiacco, 1950 (Euscorpiidae), using light and transmission electron microscopy. Male telsons are significantly bigger and more voluminous than those of females. Varying considerably between sexes, four different kinds of secretory cells are clearly distinguishable.The female secretory epithelium consists mainly of granule-filled cells while that of the males mainly has cells containing dissolvable vesicles. This cell type probably produces transparent venom that has been identified in other scorpions as so-called ‘prevenom’. The role this “pre-venom” plays in sexual sting behaviour is addressed.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10600 - Biological sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Biological Journal of the Linnean Society
ISSN
0024-4066
e-ISSN
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Volume of the periodical
122
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
15
Pages from-to
429-443
UT code for WoS article
000412186500016
EID of the result in the Scopus database
2-s2.0-85030692803