Biting and binding: an exclusive coercive mating strategy of males in a philodromid spider

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00117091" target="_blank" >RIV/00216224:14310/20:00117091 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.anbehav.2020.08.001" target="_blank" >https://doi.org/10.1016/j.anbehav.2020.08.001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.anbehav.2020.08.001" target="_blank" >10.1016/j.anbehav.2020.08.001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Biting and binding: an exclusive coercive mating strategy of males in a philodromid spider

Popis výsledku v původním jazyce

Males typically court females extensively to convince them to mate. In some species, however, males coerce females to mate. We studied mating behaviour in the spider Thanatus fabricii and focused on behavioural and venomic adaptations. We found that males always bit and bound females before and during mating. The bitten females quickly fell into a state of immobility, during which males copulated with them. The duration of male bites increased with increasing size of the female. In contrast, male bites were shorter if the female was missing legs. Additionally, males with relatively longer legs induced longer states of immobility in females. Binding by silk prolonged the state of immobilization, allowing males to perform more insertions. After copulation, females were less successful in catching their prey (ants), suggesting that this mating strategy negatively affects female fitness. Altogether, this evidence shows that mating in T. fabricii is coercive. Males of T. fabricii had relatively larger venom glands than both conspecific females and males of closely related Philodromus species, which court females. The composition of venom, however, did not differ between the sexes. Male venom glands appear to be adapted to coercive mating rather than to foraging, as they caught fewer prey than closely related species. We suggest that coercive mating in T. fabricii may be enabled by venomic adaptation in the males.

Název v anglickém jazyce

Biting and binding: an exclusive coercive mating strategy of males in a philodromid spider

Popis výsledku anglicky

Males typically court females extensively to convince them to mate. In some species, however, males coerce females to mate. We studied mating behaviour in the spider Thanatus fabricii and focused on behavioural and venomic adaptations. We found that males always bit and bound females before and during mating. The bitten females quickly fell into a state of immobility, during which males copulated with them. The duration of male bites increased with increasing size of the female. In contrast, male bites were shorter if the female was missing legs. Additionally, males with relatively longer legs induced longer states of immobility in females. Binding by silk prolonged the state of immobilization, allowing males to perform more insertions. After copulation, females were less successful in catching their prey (ants), suggesting that this mating strategy negatively affects female fitness. Altogether, this evidence shows that mating in T. fabricii is coercive. Males of T. fabricii had relatively larger venom glands than both conspecific females and males of closely related Philodromus species, which court females. The composition of venom, however, did not differ between the sexes. Male venom glands appear to be adapted to coercive mating rather than to foraging, as they caught fewer prey than closely related species. We suggest that coercive mating in T. fabricii may be enabled by venomic adaptation in the males.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

<a href="/cs/project/LM2018127" target="_blank" >LM2018127: Česká infrastruktura pro integrativní strukturní biologii</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Animal Behaviour

ISSN

0003-3472

e-ISSN

1095-8282

Svazek periodika

168

Číslo periodika v rámci svazku

OCT

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

59-68

Kód UT WoS článku

000581858400009

EID výsledku v databázi Scopus

2-s2.0-85089948370