EFFECTS OF DIETARY ESFENVALERATE EXPOSURES ON THREE AQUATIC INSECT SPECIES REPRESENTING DIFFERENT FUNCTIONAL FEEDING GROUPS

2008 ◽  
Vol 27 (8) ◽  
pp. 1721 ◽  
Author(s):  
Katherine R. Palmquist ◽  
Jeffrey J. Jenkins ◽  
Paul C. Jepson
Keyword(s):  
Aquatic Insect ◽  
Insect Species ◽  
Functional Feeding Groups ◽  
Feeding Groups

Preliminary Results on Aquatic Insects in the Me Linh Station for Biodiversity, Vinh Phuc Province

2017 ◽  
Vol 33 (4) ◽  
Author(s):  
Nguyen Van Hieu ◽  
Nguyen Van Vinh
Keyword(s):  
Quantitative Analysis ◽  
Aquatic Insects ◽  
Field Survey ◽  
Aquatic Insect ◽  
Insect Species ◽  
Functional Feeding Groups ◽  
Species Number ◽  
Feeding Groups ◽  
Preliminary Results

An intensive field survey on aquatic insects of Me Linh Station for Biodiversity in Vinhphuc province was conducted in December 2015. Specimens were collected at 8 different sites and aquatic insects were collected both quantitatively by Surber net and qualitatively by hand net, pond net. As a result, a total of 110 aquatic insect species belonging to 98 genera, 49 families and 9 orders were recognized. Among these, the order Ephemeroptera had the highest species number with 26 species, followed by Odonata with 25 species, Trichoptera with 18 species, Coleoptera with 15 species, Hemiptera with 11 species, Diptera with 9 species. Lepidoptera, Plecoptera and Megaloptera had the lowest of species number, represented by 3 species of Lepidoptera, 2 species of Plecoptera and 1 species of Megaloptera. Besides, the quantitative analysis results and the functional feeding groups were provided.

scholarly journals Aquatic insect community structure under the influence of small dams in a stream of the Mogi-Guaçu river basin, state of São Paulo

2014 ◽  
Vol 74 (1) ◽  
pp. 79-88 ◽  
Author(s):  
HHL Saulino ◽  
JJ Corbi ◽  
S Trivinho-Strixino
Keyword(s):  
Community Structure ◽  
Aquatic Insect ◽  
Sao Paulo ◽  
Longitudinal Profile ◽  
Functional Feeding Groups ◽  
Slight Reduction ◽  
São Paulo ◽  
Insect Community ◽  
Feeding Groups ◽  
Β Diversity

The fragmentation of lotic systems caused by construction of dams has modified many aquatic communities. The objective of this study was to analyse changes in the aquatic insect community structure by discontinuity of habitat created by dams along the Ribeirão das Anhumas, a sub-basin of the Mogi-Guaçu River (state of São Paulo, Brazil). Entomofauna collection was carried out in 10 segments upstream and downstream of five dams along the longitudinal profile of the stream, with a quick sampling method using a D net (mesh 250 mm) with 2 minutes of sampling effort. The insects were sorted and identified to the lowest possible taxonomic level and analysed by the Shannon diversity index, β diversity, richness estimated by rarefaction curves and relative participation of functional feeding groups. The results showed a slight reduction in diversity in the downstream segments, as well as along the longitudinal profile of the stream. However, there were no significant differences in abundance and richness between the upstream and downstream segments, indicating that the dams did not influence these variables. Differences were observed in the functional feeding groups along the longitudinal profile. Predator and gatherer insects were dominant in all segments analysed. The feeding group of shredders was more abundant in the segment DSIII with the participation of Marilia Müller (Odontoceridae – Trichoptera), although we observed a decrease of shredders and scrapers with the decrease of the canopy cover reducing values of β diversity in the continuum of Ribeirão das Anhumas. This result demonstrated the importance of the conservation of the riparian vegetation in order to maintain the integrity of the stream.

scholarly journals Aquatic Insect Functional Feeding Groups in a Mountain Stream with a Series of Check Dams in Northern Thailand

2018 ◽  
Vol 47 (07) ◽  
pp. 1379-1386
Author(s):  
Phuchiwan Suriyawong ◽  
Decha Thapanya ◽  
Elizabeth A. Bergey ◽  
Porntip Chantaramongkol
Keyword(s):  
Aquatic Insect ◽  
Mountain Stream ◽  
Functional Feeding Groups ◽  
Northern Thailand ◽  
Feeding Groups ◽  
Check Dams

scholarly journals Microhabitat selection and distribution of functional feeding groups of mayfly larvae (Ephemeroptera) in lotic karst habitats

2018 ◽  
pp. 17 ◽  
Author(s):  
Marina Vilenica ◽  
Andreja Brigić ◽  
Michel Sartori ◽  
Zlatko Mihaljević
Keyword(s):  
Water Current ◽  
Functional Feeding Groups ◽  
Feeding Strategies ◽  
Microhabitat Selection ◽  
Dinaric Karst ◽  
Feeding Groups ◽  
Microhabitat Preferences ◽  
One Year ◽  
Physical And Chemical ◽  
Chemical Water

Research examining mayfly ecology in karst streams and rivers has increased in recent years, though microhabitat preferences remain poorly characterized. We examined mayfly assemblage taxonomy, functional feeding groups and microhabitat preferences in two contrasting lotic Dinaric karst catchments, one pristine and one anthropogenically impacted. At monthly intervals over a one-year period, all major microhabitats (i.e. dominated by boulders, cobbles, sand, silt, mosses, or angiosperms) were sampled at sites spanning springs, upper, middle and lower river reaches, and tufa barriers. In both catchments, mayfly species richness was comparable among microhabitats, while mayfly abundance was highest on mosses and lowest on silt. NMDS ordination did not group assemblages according to microhabitat type, which may reflect the greater influence of physical and chemical water properties. In both catchments and all microhabitats, mayfly assemblages were dominated by grazers/scrapers at upstream sites and by detritivores at downstream sites. Active filter feeders were more abundant in microhabitats with silt substrates and lower current velocities. This study demonstrated that certain mayfly species strongly preferred a specific microhabitat type, reflecting their water current preferences and feeding strategies, while other species shifted between microhabitats, likely in search of food resources and shelter. The results emphasize the importance of habitat heterogeneity in supporting diverse communities in karst rivers.

Discovery of coprolites in an Early Permian fern mesophyll

2022 ◽  
Vol 5 (1) ◽  
Author(s):  
WEI-MING ZHOU ◽  
MING-LI WAN ◽  
JOSEF PŠENIČKA ◽  
JUN WANG
Keyword(s):  
Terrestrial Ecosystem ◽  
Terrestrial Ecosystems ◽  
Functional Feeding Groups ◽  
Early Permian ◽  
Plant Organs ◽  
Feeding Groups ◽  
Fossil Records

Plants and arthropods interact with each other and constitute an important part of the modern terrestrial ecosystem (Schoonhoven et al., 2005). Historically, fossil records of plant-arthropod interactions have been well documented in Paleozoic terrestrial ecosystems, which were evidenced by large coprolites containing various plant fragments (e.g., Salter et al., 2012), small larvae and coprolites remained in plant organs (e.g., Feng et al., 2017), and diverse functional feeding groups discovered on plant stems, rachises, roots, leaves and fertile organs (e.g., Liu et al., 2020).

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