Tracing the evolution of trophic specialisation and mode of attack behaviour in the ground spider family Gnaphosidae

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00117067" target="_blank" >RIV/00216224:14310/20:00117067 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s13127-020-00453-0" target="_blank" >https://link.springer.com/article/10.1007/s13127-020-00453-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s13127-020-00453-0" target="_blank" >10.1007/s13127-020-00453-0</a>

Result language

angličtina

Original language name

Tracing the evolution of trophic specialisation and mode of attack behaviour in the ground spider family Gnaphosidae

Original language description

The evolutionary history of prey specialisation differs among spider species, particularly among active wandering species which have evolved a variety of prey-capture tactics. Here, we conducted a comparative analysis of prey specialisation and prey capture behaviour in Gnaphosidae. We used nine species each representing a different genus and investigated their acceptance of spiders and ants as prey, on which they may specialise, and their attack behaviour. Then we collected such data for another about 20 species from literature. The studied species used only either biting or silk (followed by biting) to constrain prey during attack. For each species, we measured selected morphological characteristics-specifically, the relative sizes of cheliceral fangs and spinnerets as well as the number of spigots on spinnerets-and related them to the ability to catch spiders (araneophagy) and ants (myrmecophagy) and mode of attack behaviour. We found the relative fang size to be significantly shorter for myrmecophagous species. Other traits were not related to prey specialisation or attack behaviour. They used silk particularly for larger prey. Use of silk was a conditional strategy in some species. We reconstructed the phylogenetic relationships among the studied genera using molecular and morphological data. We found that araneophagy was frequent but myrmecophagy was rare among recent taxa. Comparative analysis revealed that araneophagy is an ancestral state, while myrmecophagy was less likely and repeatedly lost. The use of silk for prey immobilisation was also as likely as unlikely for ancestors and has been repeatedly lost.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

ORGANISMS DIVERSITY &amp; EVOLUTION

ISSN

1439-6092

e-ISSN

—

Volume of the periodical

20

Issue of the periodical within the volume

4

Country of publishing house

DE - GERMANY

Number of pages

13

Pages from-to

551-563

UT code for WoS article

000560624600001

EID of the result in the Scopus database

2-s2.0-85089603442