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Statements

Subject Item
n2:RIV%2F60077344%3A_____%2F13%3A00420824%21RIV14-AV0-60077344
rdf:type
n10:Vysledek skos:Concept
dcterms:description
The arboricolous dolichoderine ant Liometopum microcephalum (Panzer, 1798) is considered to be mainly predatory, although there are some reports of it tending aphids. The main objective of the present study was to confirm that this ant has a trophobiotic relationship with aphids and assess seasonal differences in its utilization of honeydew. We hypothesized that the worker ants on trees where they have their nest (nest tree) and trees where they are foraging (foraging trees) should differ in gaster mass and sugar content depending on their direction of movement, and that both should be highest in spring. From spring to summer 2009, ascending and descending workers were collected from nest and foraging trees at a locality in South Moravia, Czech Republic. Mass of their gasters and their content of total and reducing sugars were measured using chemical (photometric) methods. Differences in gaster mass confirmed the flow of liquid food from foraging to nest trees, but there were no significant between-month differences. Contents of total and reducing sugars were positively correlated with gaster mass. The gasters of workers descending from foraging trees contained significantly more reducing sugars than those of workers descending or ascending nest trees. The content of reducing sugars was lowest at the beginning of the ants' activity period in April and highest in June, with a non-significant drop in July. Results for total sugars were similar, with the decrease in July being significant. The concentration of sugars in the gasters of workers ascending and descending nest trees did not differ significantly but the absolute content of total sugars was higher in the gasters of ascending ants. Results from foraging trees confirmed that the ants collected the honeydew from these trees. Possible reasons for the ambigous results for nest trees are discussed. We conclude that trophobiosis is an important component of the nutritional biology of L. microcephalum. The arboricolous dolichoderine ant Liometopum microcephalum (Panzer, 1798) is considered to be mainly predatory, although there are some reports of it tending aphids. The main objective of the present study was to confirm that this ant has a trophobiotic relationship with aphids and assess seasonal differences in its utilization of honeydew. We hypothesized that the worker ants on trees where they have their nest (nest tree) and trees where they are foraging (foraging trees) should differ in gaster mass and sugar content depending on their direction of movement, and that both should be highest in spring. From spring to summer 2009, ascending and descending workers were collected from nest and foraging trees at a locality in South Moravia, Czech Republic. Mass of their gasters and their content of total and reducing sugars were measured using chemical (photometric) methods. Differences in gaster mass confirmed the flow of liquid food from foraging to nest trees, but there were no significant between-month differences. Contents of total and reducing sugars were positively correlated with gaster mass. The gasters of workers descending from foraging trees contained significantly more reducing sugars than those of workers descending or ascending nest trees. The content of reducing sugars was lowest at the beginning of the ants' activity period in April and highest in June, with a non-significant drop in July. Results for total sugars were similar, with the decrease in July being significant. The concentration of sugars in the gasters of workers ascending and descending nest trees did not differ significantly but the absolute content of total sugars was higher in the gasters of ascending ants. Results from foraging trees confirmed that the ants collected the honeydew from these trees. Possible reasons for the ambigous results for nest trees are discussed. We conclude that trophobiosis is an important component of the nutritional biology of L. microcephalum.
dcterms:title
Trophobiosis in the arboricolous ant Liometopum microcephalum (Hymenoptera: Formicidae: Dolichoderinae) Trophobiosis in the arboricolous ant Liometopum microcephalum (Hymenoptera: Formicidae: Dolichoderinae)
skos:prefLabel
Trophobiosis in the arboricolous ant Liometopum microcephalum (Hymenoptera: Formicidae: Dolichoderinae) Trophobiosis in the arboricolous ant Liometopum microcephalum (Hymenoptera: Formicidae: Dolichoderinae)
skos:notation
RIV/60077344:_____/13:00420824!RIV14-AV0-60077344
n10:predkladatel
n15:ico%3A60077344
n3:aktivita
n7:Z n7:P n7:I
n3:aktivity
I, P(GD526/09/H025), Z(MSM0021622416)
n3:cisloPeriodika
2
n3:dodaniDat
n9:2014
n3:domaciTvurceVysledku
n14:7039603
n3:druhVysledku
n16:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
111939
n3:idVysledku
RIV/60077344:_____/13:00420824
n3:jazykVysledku
n12:eng
n3:klicovaSlova
Hymenoptera; arboricolous; ants; trophobiosis
n3:klicoveSlovo
n4:trophobiosis n4:ants n4:arboricolous n4:Hymenoptera
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[8C300692E6EA]
n3:nazevZdroje
European Journal of Entomology
n3:obor
n19:EG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n17:GD526%2F09%2FH025
n3:rokUplatneniVysledku
n9:2013
n3:svazekPeriodika
110
n3:tvurceVysledku
Schlaghamerský, J. Šustr, Vladimír Petráková, L. Kašpar, J.
n3:wos
000318038400007
n3:zamer
n13:MSM0021622416
s:issn
1210-5759
s:numberOfPages
9