Trait patterns of aquatic insects across gradients of flow-related factors: a multivariate analysis of Canadian national data

Large-scale comparisons of aquatic bioassessment metrics based on taxonomic composition are currently constrained by the biogeographic limitations of taxon occurrence. The use of species trait patterns offers a possibility to overcome this constraint. We examine the assertion that the trait composition of aquatic insect communities changes in a consistent manner along similar environmental disturbance gradients by evaluating relationships between traits and three flow-related variables (velocity, water temperature, and dissolved oxygen) in 13 independently collected Canadian data sets. Certain trait states such as low crawling rate, common occurrence in drift, short adult life span, erosional rheophily, medium size at maturity, and cold or cool thermal preference were consistently sensitive to all three flow-related factors, velocity in particular, despite biogeographic differences in faunal composition. Trait modalities exhibiting the highest mean correlation with velocity, temperature, and dissolved oxygen were identified, and the potential confounding effect of trait “syndromes” was addressed by restricting the selection of flow-sensitive traits to those with high evolutionary lability. The results of the study provide a basis for the future development of flow bioassessment metrics at the national Canadian scale and potentially at the international scale.

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Imaging and Cognitive Genetics: The Norwegian Cognitive NeuroGenetics Sample

Twin Research and Human Genetics ◽

10.1017/thg.2012.8 ◽

2012 ◽

Vol 15 (3) ◽

pp. 442-452 ◽

Cited By ~ 28

Author(s):

Thomas Espeseth ◽

Andrea Christoforou ◽

Astri J. Lundervold ◽

Vidar M. Steen ◽

Stephanie Le Hellard ◽

...

Keyword(s):

Sample Size ◽

Cognitive Aging ◽

Brain Function ◽

Large Scale ◽

Adult Life ◽

Aging Brain ◽

Adult Life Span ◽

Cross Sectional ◽

A Genome ◽

Effects Of Aging

Data collection for the Norwegian Cognitive NeuroGenetics sample (NCNG) was initiated in 2003 with a research grant (to Ivar Reinvang) to study cognitive aging, brain function, and genetic risk factors. The original focus was on the effects of aging (from middle age and up) and candidate genes (e.g., APOE, CHRNA4) in cross-sectional and longitudinal designs, with the cognitive and MRI-based data primarily being used for this purpose. However, as the main topic of the project broadened from cognitive aging to imaging and cognitive genetics more generally, the sample size, age range of the participants, and scope of available phenotypes and genotypes, have developed beyond the initial project. In 2009, a genome-wide association (GWA) study was undertaken, and the NCNG proper was established to study the genetics of cognitive and brain function more comprehensively. The NCNG is now controlled by the NCNG Study Group, which consists of the present authors. Prominent features of the NCNG are the adult life-span coverage of healthy participants with high-dimensional imaging, and cognitive data from a genetically homogenous sample. Another unique property is the large-scale (sample size 300–700) use of experimental cognitive tasks focusing on attention and working memory. The NCNG data is now used in numerous ongoing GWA-based studies and has contributed to several international consortia on imaging and cognitive genetics. The objective of the following presentation is to give other researchers the information necessary to evaluate possible contributions from the NCNG to various multi-sample data analyses.

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Molecular identification of the swede midge (Diptera: Cecidomyiidae)

The Canadian Entomologist ◽

10.4039/n03-120 ◽

2004 ◽

Vol 136 (6) ◽

pp. 771-780 ◽

Cited By ~ 15

Author(s):

Juerg E. Frey ◽

Beatrice Frey ◽

Robert Baur

Keyword(s):

Large Scale ◽

Crop Protection ◽

Adult Life ◽

Molecular Diagnostic ◽

Pest Species ◽

Adult Life Span ◽

Protection Measures ◽

Major Pest ◽

Swede Midge ◽

Species Specific

AbstractEarly detection of pest infestation is a prerequisite for sustainable crop protection. However, many pest species are difficult to detect and thus infestation is diagnosed from damage observed on the respective crop. This diagnosis is often made too late for implementation of crop protection measures, and serious crop losses may result. The swede midge, Contarinia nasturtii Kieffer, is a major pest of Brassica L. (Brassicaceae) vegetables in Europe that has recently invaded North America. With its small size and short adult life-span, and the cryptic lifestyle of the larvae feeding at the growing points of its host plants, it is usually detected only after damage has already occurred. Furthermore, because field-trapped specimens are rarely fully intact, it is extremely difficult to identify. Therefore, we developed a species-specific molecular diagnostic method that enables reliable identification of swede midge from various sources such as alcohol or sticky glue traps. The method enables large-scale screening of field-trapped specimens and is used to evaluate the attractiveness and specificity of pheromone traps that are currently under development.

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Age differences in demographic, social and health-related factors associated with loneliness across the adult life span (19–65 years): a cross-sectional study in the Netherlands

BMC Public Health ◽

10.1186/s12889-020-09208-0 ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

Thanée Franssen ◽

Mandy Stijnen ◽

Femke Hamers ◽

Francine Schneider

Keyword(s):

The Netherlands ◽

Age Differences ◽

Adult Life ◽

Cross Sectional Study ◽

Sectional Study ◽

Related Factors ◽

Adult Life Span ◽

Cross Sectional ◽

Factors Associated ◽

Health Related

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Vulnerability of Aquatic Insect Species to Insecticides, Depending on Their Flight Period and Adult Life Span

Environmental Toxicology and Chemistry ◽

10.1002/etc.5025 ◽

2021 ◽

Author(s):

Christian Kjær ◽

Peter Borgen Sørensen ◽

Peter Wiberg‐Larsen ◽

Jesper Bak ◽

Marianne Bruus ◽

...

Keyword(s):

Life Span ◽

Aquatic Insect ◽

Adult Life ◽

Insect Species ◽

Flight Period ◽

Adult Life Span

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The Aquatic Insect Communities of Universiti Malaysia Sabah (UMS), Sabah, Malaysia

Journal of Tropical Resources and Sustainable Science (JTRSS) ◽

10.47253/jtrss.v3i1.675 ◽

2015 ◽

Vol 3 (1) ◽

pp. 1-5

Author(s):

Arman Hadi Mohmad ◽

Mohd Shafiq Izzat Shafie ◽

Andrew Wong Bak Hui ◽

Sahana Harun

Keyword(s):

Water Quality ◽

Dissolved Oxygen ◽

Diversity Index ◽

Aquatic Insect ◽

Quality Parameters ◽

Water Quality Parameters ◽

Insect Communities ◽

Pearson’S Correlation ◽

Insect Abundance ◽

Pearson's Correlation

A s tudy was conducted to investigate the aquatic insect communities in Universiti Malaysia Sabah (UMS), Sabah, Malaysia. Two sampling sites were selected: lakes at School of Science and Technology (SST), and another near College E (CE) (student accommodation). Each lake consisted of four sampling stations. Aquatic insects were sampled using dip net from November 2013 to January 2014. Four water quality parameters were measured at each station. Shannon-Weiner’s diversity index and biotic indices (BMWP) were used in this study. Student’s t-test was used for testing the significant difference of water quality parameters, Shannon-Weiner’s diversity index and BMWP between these lakes. Pearson’s correlation was used to investigate relationships between aquatic insect assemblage and water quality parameters. A total of 1987 individuals composed of five orders that representing eleven families were recorded in this study. Baetidae (56.67%) was the dominant family in UMS, where Diptera order had least abundant with only 0.4% of overall sample. Aquatic insect abundance were significantly higher (P<0.05) in CE Lake. Bray-Curtis Similarity index showed 53.75% similarity between these two lakes. Pearson’s correlation showed that aquatic insect abundance and richness had significant relationships with water temperature, dissolved oxygen, salinity and pH (P<0.05 or 0.01), except for salinity with taxa richness. Based on Malaysia’s INWQS, water quality parameters of these two lakes were categorized as Class I, but with dissolved oxygen the CE and SST lakes were classified as Class IIA and III respectively. The BMWP index showed similar results as dissolved oxygen, where SST Lake (score=40) had poor water quality.

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