EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/24/2021 | 2:00 PM - 3:30 PM | CROSS-ECOSYSTEM SUBSIDES: INFECTED FOREST AS RESOURCES FOR AQUATIC DETRITIVORES | Virtual Platform
CROSS-ECOSYSTEM SUBSIDES: INFECTED FOREST AS RESOURCES FOR AQUATIC DETRITIVORES
We evaluated the impact of galls on two aquatic detritivores comparing the consumption of galled with ungalled leaves and the effect of this consumption on detritivore nutrient content. The amphipod Hyalella curvispina and larvae of the caddisfly Monocosmoecus hyadesi were chosen as detritivores. Fungal biomass, carbon (C), nitrogen (N), and phosphorus (P) were measured in leaves and detritivores and C:N:P molar ratios were calculated. Galled leaves had higher N and ergosterol content, and lower C:N ratios than ungalled leaves. Galled leaf consumption was higher than the ungalled for both detritivores. The two species differed in N and C (caddisfly > amphipod), and P (caddisfly < amphipod) content. The N:P ratio of the amphipod was similar to the ungalled control leaf ratio and increased when fed on galled leaves. In contrast, the N:P ratio of the caddisfly was much higher than the ungalled leaves and decreased when fed on galled leaves. Galls alter nutrient content in leaves and increase fungal biomass. Both detritivore species were highly homeostatic with regard to C:N ratio, but the caddisfly could overcome the limiting P content by increasing consumption.
- Stoichiometry
- Detritivore
- Stream
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Presenters/Authors
Marina Tagliaferro
(), Centro Austral de Investigaciones Científicas (CADIC-CONICET), azulmarinita@gmail.com;
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Verónica Díaz Villanueva
(), INIBIOMA-CONICET, diazv@comahue-conicet.gob.ar ;
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Laura Wolisnki
(), CADIC-CONICET, lauriw@gmail.com ;
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Claudia Boy
(), CADIC-CONICET, claudiaboy@gmail.com ;
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