Holothurians dominate the abyssal megabenthos. They are key consumers and bioturbators of surficial sediment. Compounds essential for holothurian reproduction, such as carotenoids, are in short supply in the deep ocean. Holothurians cannot synthesise carotenoids de novo; the compounds are supplied with the flux of phytodetritus. Therefore, the supply of these compounds may play an important rol...

Mollusc fauna of three protected areas in the capital Czech Republic, Prague, was revised after 25 years (Hvězda Game Reserve, Petřín) or studied for first time (Vyšehrad). In total, 56 molluscs species were found and survival endangered Vertigo angustior Nesovitrea petronella Hvězda Reserve verified. Generally, some sensitive well-preserved localities are being replaced by weed species, includ...

We report the first finding of Lymnaea cousini naturally infected with Fasciola hepatica in Ecuador. A sample of 70 snails was collected in April 2005 from a wetland located in a valley at approximately 3000 m a.s.l., near the locality of Machachi, Pichincha Province. The prevalence of natural infection in L. cousini was 31.43%, which is the highest value ever recorded for naturally infected ly...

Introduction Exaiptasia diaphana is a popular model organism for exploring the symbiotic relationship observed between cnidarians and their microsymbionts. While physiological roles of algal photosymbionts (Symbiodinaceae) are well studied, contributions bacterial communities less defined in this system. Methods We investigated microbial variation distinct parts body state across four genets he...

The global decline of coral reefs heightens the need to understand how corals may persist under changing environmental conditions. Restructuring coral-associated bacterial community, either through natural or assisted strategies, has been suggested as a means adaptation climate change. A low complexity microbial system would facilitate testing efficacy restructuring strategies. We used model or...

Hoverflies (Syrphidae) are a large Dipteran family, distributed almost worldwide. They play very important ecological roles such as plant pollination, nutrient recycling and predation of pests. The members the genus Epistrophe Walker, 1852 medium-sized hoverflies which about 75 species have been described in World, 12 them occur Europe. During survey, conducted from 16th June to 4th July 2021 a...

Sex attractants for 3 Sesiidae and 3 Tineidae moth species in West-Kazakhstan and Lithuania were discovered by field screening tests of (3Z,13Z)-, (3E,13Z)- and (2E,13Z)-octadecadien-1-ols and their acetates as well as of some binary mixtures of these compounds. Total amount of chemicals was 0.3 mg/dispenser. Males of Synanthedon serica were attracted by a 5:5 mixture of 3E,13Z-18:OAc and 2E,13...

A chemical analysis of the crude sex pheromone gland extracts of virgin calling Paranthrene tabaniformis females, obtained from the European part of Kazakhstan, revealed the presence of five compounds: (3E,13Z)-octadeca-3,13-dien-1-ol (E3,Z13-18:OH), (3Z,13Z)-octadeca-3,13-dien-1-ol (Z3,Z13-18:OH), (2E,13Z)-octadeca-2,13-dien-1-ol (E2,Z13-18:OH), (13Z)-octadec-13-en-1-ol (Z13-18:OH), and octade...