The relationship between body size and diet breadth in non-web building spiders
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F25%3A43925972" target="_blank" >RIV/62156489:43410/25:43925972 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/25:00142341
Result on the web
<a href="https://doi.org/10.1111/een.13401" target="_blank" >https://doi.org/10.1111/een.13401</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/een.13401" target="_blank" >10.1111/een.13401</a>
Alternative languages
Result language
angličtina
Original language name
The relationship between body size and diet breadth in non-web building spiders
Original language description
The handling hypothesis assumes that large animals have broader diets than small animals because small animals are restricted to small prey while large animals can handle both small and large prey. On the other hand, the optimal foraging hypothesis assumes no relationship between predator body size and diet breadth because large predators should shift from small prey to large prey to maximize the net energy intake. Using the diets and body sizes of 89 non-web building spider species obtained from public databases (World Spider Trait database, Spiders of Europe and World Spider Catalogue), we investigated the relationship between body size and diet breadth in this group of terrestrial arthropod predators. We found that the taxonomic niche diet breadth measured by Hill numbers (i.e., prey richness, Shannon index of diversity and Simpson index of equitability) had no significant relationship with spider body size. The minimum prey size did not show any relationship with spider body size. On the other hand, mean, maximum, range and variability in prey size increased with spider body size. The results provide support for both hypotheses. The pattern in prey taxonomic dimension supports the optimal foraging hypothesis, while the pattern in prey size dimension supports the handling hypothesis. Overall, the observed distinct patterns between the taxonomic and prey size niche axes can be caused by the fact that the non-web building spiders utilize similar prey types that are however highly size-structured.
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
10613 - Zoology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ecological Entomology
ISSN
0307-6946
e-ISSN
1365-2311
Volume of the periodical
50
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
311-317
UT code for WoS article
001354156700001
EID of the result in the Scopus database
2-s2.0-85208812581