The cephalopod molluscs are a group of invertebrates that occupy a wide range of oceanic photic environments. They are an ideal group of animals, therefore, in which to study the evolution of rhodopsin. The cDNA sequence of the rhodopsin gene of the cuttlefish Sepia officinalis (L.) (Sub-class Coleoidea, Order Sepiida) is presented, together with an analysis of the structure of the gene. A prol...

This paper identifies issues in computer-support for collaborative authoring of hyperdocuments and shows how SEPIA, a cooperative authoring environment, addresses these issues. First, hyperdocuments can be used to create and maintain technical documentation. Second, activity spaces support the cognitive and social processes involved in the creation of hyperdocuments. Third, a shared hyperdocume...

In this study, we reports ten exotic ant species from Cambodia, based on field expeditions conducted 2010 to 2013. The following seven are confirmed be new Cambodia: Iridomyrmex anceps (Roger, 1863), Monomorium floricola (Jerdon, 1851), M. pharaonis (Linnaeus, 1758), Solenopsis geminata (Fabricius, 1804), Tetramorium kheperra (Bolton, 1976), T. lanuginosum Mayr, 1870 and Trichomyrmex destructor...

Halorhabdus utahensis, Natronomonas pharaonis, Haloferax sulfurifontis and Halobaculum gomorrense were grown at salinity values between 10% and 30% NaCl (w/v). The strains represent four haloarchaeal genera and have a range of salinity optima. Analysis of core membrane lipids of each strain using gas chromatography–mass spectrometry (GC–MS) revealed structures consistent with saturated, unsatur...

Many ants use pheromone trails to organize collective foraging. This study investigated the rate at which a well-established Pharaoh’s ant, Monomorium pharaonis (L.), trail breaks down on two substrates (polycarbonate plastic, newspaper). Workers were allowed to feed on sucrose solution from a feeder 30 cm from the nest. Between the nest and the feeder, the trail had a Y-shaped bifurcation. Ini...

Many social insects use pheromones to communicate and coordinate their activities. Investigation of intraspecific differences in pheromone use is a new area of social insect research. For example, interindividual variation in alarm pheromone content has been found in physical castes of polymorphic ants. Many ant species use multiple trail pheromones. Here we present novel research into trail ph...

Abstract
 
 Background
 In homeopathy some drugs are known to act as complementary, antidotal or inimical a
 particular drug. Practitioners can follow this rule when they apply one drug following another.
 Potentized Nux vomica reduce acute hypnotic effect of alcohol on toads. Sulphur and Sepia
 reported be complementary Nux-vom, while Coffea cruda Zincum met antid...

This article comprises an up-dated review of the processes influencing the distribution and abundance of common cuttlefish Sepia officinalis, the interactions between the species and the main parameters of the environment in which it lives and its trophic, demographic and behavioural ecology.

Natronomonas pharaonis is an archaeon adapted to two extreme conditions: high salt concentration and alkaline pH. It has become one of the model organisms for the study of extremophilic life. Here, we present a genome-scale, manually curated metabolic reconstruction for the microorganism. The reconstruction itself represents a knowledge base of the haloalkaliphile's metabolism and, as such, wou...