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Statements

Subject Item
n2:RIV%2F60077379%3A_____%2F02%3A61023002%21RIV%2F2003%2FAV0%2FA61003%2FN
rdf:type
n15:Vysledek skos:Concept
dcterms:description
Dipteran larvae play an important role in the soil of some deciduous forests. They can consume a considerable part of the annual litter fall and produce a large amount of faecal pellets, which are forming an important part of the fermentation horizon of forest soils. We measured the pH changes and assayed the activities and pH optima of saccharolytic enzymes in the digestive tracts of the larvae of Bibio pomonae and Penthetria holosericea (Bibionidae). The pH of the litter offered as a food was about 5. The gut content became highly alkaline (pH about 10) in the anterior part of the midgut and the pH decreased posteriorly and in the hindgut. Excrements were neutral or had slightly alkaline pH (7,5-8,0) in both species. The alkaline pH optima of amylase (9,5-10,0) and maltase (8,0), trehalase and cellobiase (7,0) were the same in both species. Saccharolytic activity showed an optimum at pH 7 in B. pomonae and at pH 8 in P. holosericea. Though there are previously published reports of high assimilation Dipteran larvae play an important role in the soil of some deciduous forests. They can consume a considerable part of the annual litter fall and produce a large amount of faecal pellets, which are forming an important part of the fermentation horizon of forest soils. We measured the pH changes and assayed the activities and pH optima of saccharolytic enzymes in the digestive tracts of the larvae of Bibio pomonae and Penthetria holosericea (Bibionidae). The pH of the litter offered as a food was about 5. The gut content became highly alkaline (pH about 10) in the anterior part of the midgut and the pH decreased posteriorly and in the hindgut. Excrements were neutral or had slightly alkaline pH (7,5-8,0) in both species. The alkaline pH optima of amylase (9,5-10,0) and maltase (8,0), trehalase and cellobiase (7,0) were the same in both species. Saccharolytic activity showed an optimum at pH 7 in B. pomonae and at pH 8 in P. holosericea. Though there are previously published reports of high assimilation
dcterms:title
Activity of carbohydrases in the gut of Bibionidae (Diptera) larvae. Activity of carbohydrases in the gut of Bibionidae (Diptera) larvae.
skos:prefLabel
Activity of carbohydrases in the gut of Bibionidae (Diptera) larvae. Activity of carbohydrases in the gut of Bibionidae (Diptera) larvae.
skos:notation
RIV/60077379:_____/02:61023002!RIV/2003/AV0/A61003/N
n3:strany
75;77
n3:aktivita
n11:P n11:Z
n3:aktivity
P(IAB6066903), Z(AV0Z6066911)
n3:cisloPeriodika
N/A
n3:dodaniDat
n5:2003
n3:domaciTvurceVysledku
n12:7039603 n12:1271954
n3:druhVysledku
n14:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
637438
n3:idVysledku
RIV/60077379:_____/02:61023002
n3:jazykVysledku
n7:eng
n3:klicovaSlova
Bibionidae; digestion; enzyme activity
n3:klicoveSlovo
n4:enzyme%20activity n4:Bibionidae n4:digestion
n3:kodStatuVydavatele
FR - Francouzská republika
n3:kontrolniKodProRIV
[AFE7FA8B41A1]
n3:nazevZdroje
European Journal of Soil Biology
n3:obor
n13:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:projekt
n17:IAB6066903
n3:rokUplatneniVysledku
n5:2002
n3:svazekPeriodika
38
n3:tvurceVysledku
Šustr, Vladimír Frouz, Jan
n3:zamer
n8:AV0Z6066911
s:issn
1164-5563
s:numberOfPages
3