A red flag: an experimental analysis of the function of pink colouration in males of (Odonata: Calopterygidae).

Males display phenotypic characteristics that may be associated with their quality, allowing non-random mating and post-copulatory female choice. In the damselfly , males have a conspicuous pink colouration in the underside of abdominal segments 8-10, which they exhibit during pre- and post-copulatory courtship. We hypothesized that this colouration functions to increase male mating success and/or to elicit females to oviposit.

A Review of the Density, Biomass, and Secondary Production of Odonates.

Freshwater insects are highly significant as ecosystem service providers, contributing to provisioning services, supporting services, and cultural services. Odonates are dominant predators in many freshwater systems, becoming top predators in fishless ecosystems. One service that odonates provide is the export of matter and energy from aquatic to terrestrial ecosystems.

Evaluation of Age and Sex Differences in Contemporary versus High-Sensitivity Troponin I Measurement in Hospitalized Patients.

With the transition from the contemporary (cTnI) to high-sensitivity troponin assay (hs-cTnI), concerns have arisen regarding the diagnostic differences between these two assays due to analytical distinctions. This study aims to evaluate the age and sex differences between these two assays, as well as the differences resulting from using two different 99th percentile values of the high-sensitivity troponin assay. : A retrospective observational study was conducted at an academic medical center, encompassing a total of 449 lithium heparin plasma samples included in the dataset.

Demography and Behaviour of (Odonata: Megapodagrionidae) in a Protected Area of the Colombian Andean Region.

The demography and behaviour of was studied in a protected area in the Andean region of Colombia. Adult damselflies were individually marked, and using their recapture histories, we estimated survival, longevity, sex ratio, and population size using Cormack-Jolly-Seber models. Other aspects of their behaviour were recorded.

Nikoulabasis roseosticta, sp. nov. from Fiji (Odonata: Coenagrionidae).

Nikoulabasis roseosticta sp. nov. (holotype , Fiji, Vanua Levu Island, Navuturerega creek, 6 August 2009, Christopher Beatty leg.