Although parasites are increasingly recognized for their ecosystem roles, it is often assumed that free-living organisms dominate animal biomass in most ecosystems and therefore provide the primary pathways energy transfer. To examine contributions of to energetics freshwater streams, we quantified standing trematodes at nine sites three streams western Oregon, USA. We then compared rates flow ...

HIGHLIGHTS Most Brazilian entomology has focused on the Atlantic Forest biome. Research Amazon and Pantanal biomes should be increased given their biodiversity. The Hymenoptera is most studied taxon in Brazil for conservation. Aquatic insects are widely used official monitoring conservation programs. Insect recovery programs provide effective

Fish and meat production processing will grow drastically in the coming decades. In aquacultural systems, insects are gaining interest as feed to provide a sustainable alternative fishmeal paradox, whose leads high consumption of resources negative environmental impacts. Within scope this study, fish from Hermetia illucens larvae Lemna minor an inline recirculating aquaponics model for urban si...

Climate is the predominant environmental driver of freshwater assemblage pattern on large spatial scales, and traits of freshwater organisms have shown considerable potential to identify impacts of climate change. Although several studies suggest traits that may indicate vulnerability to climate change, the empirical relationship between freshwater assemblage trait composition and climate has b...

Aquatic insect communities in inland waters of Chile are characterised by the presence certain species depending on water quality, but there is little information statistical ecology structure communities. The aim present study was to apply null models explain aquatic insects middle zone Loa River, Atacama Desert (Antofagasta Region, Chile; 23°S). results co-occurrence showed that associations ...

Guppies (Poecilia reticulata) are frequently introduced to both natural and artificial water bodies as a mosquito control. Laboratory studies have demonstrated that guppies can consume large numbers of larval mosquitoes. Our study investigates how intraspecific variability in guppy phenotype affects their importance as a mosquito biocontrol and how habitat conditions (natural ponds vs. water st...

One of the most intensively examined and abundantly documented structures in the animal world is insect mouthparts. Major structural types of extant insect mouthparts are extensive, consisting of diverse variations in element structure within each of the five mouthpart regions•labrum, hypopharynx, mandibles, maxillae, and labium. Numerous instances of multielement fusion both within and among m...

We investigated interactions among harlequin ducks (Histrionicus histrionicus (L., 1758)), fish, and their shared aquatic insect prey. We measured flow variability, benthic aquatic prey abundance, fish presence, and breeding density of harlequins on eight rivers in the Southern Coast Mountain Range in British Columbia, Canada, in 2003 and 2004. Rivers with lower flow variability had higher abun...