Sexual dimorphism in venom gland morphology in a sexually stinging scorpion

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Sexual dimorphism in venom gland morphology in a sexually stinging scorpion

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Sexual dimorphism in venom gland morphology in a sexually stinging scorpion

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10600 - Biological sciences

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Biological Journal of the Linnean Society

ISSN

0024-4066

e-ISSN

—

Svazek periodika

122

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

429-443

Kód UT WoS článku

000412186500016

EID výsledku v databázi Scopus

2-s2.0-85030692803