Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslands
Insights can be gained by analysing the feeding decisions of animals in terms of nutrient demands at a species or community level. Using carbohydrate and protein food baits, resource use and food preferences of Formica (Serviformica) lemani were determined at nine locations situated at different alt...
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Institute of Entomology, Biology Centre, Czech Academy of Science
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doaj-71a2cae5e7374b16b8c5ed3b6b12e32b2021-04-16T20:35:58ZengInstitute of Entomology, Biology Centre, Czech Academy of ScienceEuropean Journal of Entomology1210-57591802-88292018-05-01115121722210.14411/eje.2018.020eje-201801-0020Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslandsElia GUARIENTO0Jan MARTINI1Konrad FIEDLER2Dept. of Botany & Biodiversity Research, University of Vienna, Rennweg 14, A-1030 Vienna, Austria; e-mail: guariento.elia@gmail.comDept. of Limnology & Bio-Oceanography, University of Vienna, Althanstraße 14, A-1090 Vienna, Austria; e-mails: elvanjan@gmail.com, konrad.fiedler@univie.ac.atDept. of Botany & Biodiversity Research, University of Vienna, Rennweg 14, A-1030 Vienna, Austria; e-mail: guariento.elia@gmail.comInsights can be gained by analysing the feeding decisions of animals in terms of nutrient demands at a species or community level. Using carbohydrate and protein food baits, resource use and food preferences of Formica (Serviformica) lemani were determined at nine locations situated at different altitudes (1875 to 2400 m a.s.l.) in the alpine grassland belt above the tree line in Austria and northern Italy. F. lemani is the most common species of ant in this habitat. Sucrose baits placed around ant colonies were visited by significantly (3.9 times) more workers than protein baits. This indicates that sources of sugar (carbohydrate) are in short supply in the alpine zone, whereas availability of prey items appears to be less constraining. Overall, we recorded a decrease in the incidence of visits to baits from low (31.9% baits attracting ants at least once) to high altitudes (16.7%). Foraging ants never visited 51.5% of the baits exposed for periods of 75 min. This indicates that with increasing altitude competition for food among ant colonies becomes less intense in alpine grassland ant communities.https://www.eje.cz/artkey/eje-201801-0020_Bait_visitation_by_Formica_lemani_Hymenoptera_Fomicidae_indicates_shortage_of_carbohydrates_in_alpine_grassl.phphymenopteraformicidaeformicaantsnutritional ecologybaitsnutrient limitationalpine ecologytrophic position |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Elia GUARIENTO Jan MARTINI Konrad FIEDLER |
spellingShingle |
Elia GUARIENTO Jan MARTINI Konrad FIEDLER Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslands European Journal of Entomology hymenoptera formicidae formica ants nutritional ecology baits nutrient limitation alpine ecology trophic position |
author_facet |
Elia GUARIENTO Jan MARTINI Konrad FIEDLER |
author_sort |
Elia GUARIENTO |
title |
Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslands |
title_short |
Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslands |
title_full |
Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslands |
title_fullStr |
Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslands |
title_full_unstemmed |
Bait visitation by Formica lemani (Hymenoptera: Fomicidae) indicates shortage of carbohydrates in alpine grasslands |
title_sort |
bait visitation by formica lemani (hymenoptera: fomicidae) indicates shortage of carbohydrates in alpine grasslands |
publisher |
Institute of Entomology, Biology Centre, Czech Academy of Science |
series |
European Journal of Entomology |
issn |
1210-5759 1802-8829 |
publishDate |
2018-05-01 |
description |
Insights can be gained by analysing the feeding decisions of animals in terms of nutrient demands at a species or community level. Using carbohydrate and protein food baits, resource use and food preferences of Formica (Serviformica) lemani were determined at nine locations situated at different altitudes (1875 to 2400 m a.s.l.) in the alpine grassland belt above the tree line in Austria and northern Italy. F. lemani is the most common species of ant in this habitat. Sucrose baits placed around ant colonies were visited by significantly (3.9 times) more workers than protein baits. This indicates that sources of sugar (carbohydrate) are in short supply in the alpine zone, whereas availability of prey items appears to be less constraining. Overall, we recorded a decrease in the incidence of visits to baits from low (31.9% baits attracting ants at least once) to high altitudes (16.7%). Foraging ants never visited 51.5% of the baits exposed for periods of 75 min. This indicates that with increasing altitude competition for food among ant colonies becomes less intense in alpine grassland ant communities. |
topic |
hymenoptera formicidae formica ants nutritional ecology baits nutrient limitation alpine ecology trophic position |
url |
https://www.eje.cz/artkey/eje-201801-0020_Bait_visitation_by_Formica_lemani_Hymenoptera_Fomicidae_indicates_shortage_of_carbohydrates_in_alpine_grassl.php |
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