Diseases of lobster shells have a significant impact on fishing industries but the risk of disease transmission between different lobster species has yet to be properly investigated. This study compared bacterial biofilm communities from American (Homarus americanus) and European lobsters (H. gammarus), to assess both healthy cuticle and diseased cuticle during lesion formation. Culture-indepen...

Background: Chironomids seem to be the main cause of occupational allergy to aquarium fi sh food. Objective: The aim of this study was to investigate the pattern of occupational sensitization to 3 different arthropod species used as components of aquarium fi sh food. Methods: The study sample comprised 8 workers from a fi sh food packing department. The control group comprised 40 atopic patient...

Biological invasions are worldwide phenomena that have reached alarming levels among aquatic species. There are key challenges to understand the factors behind invasion propensity of non-native populations in invasion biology. Interestingly, interpretations cannot be expanded to higher taxonomic levels due to the fact that in the same genus, there are species that are notorious invaders and tho...

BACKGROUND Focusing on feeding as an endpoint in ecotoxicological studies is a useful and sensitive tool to detect sub-lethal impacts on individual organisms with relevance to higher levels of organisation (i.e. population and ecosystem levels). We conducted a series of experiments to identify and quantify the influence of parasite infection and food source, food quality, body size and acclimat...

While it is generally accepted that water hardness affects copper toxicity, the major ions that contribute to water hardness (calcium [Ca] and magnesium [Mg]) may affect copper toxicity differently. This is important because the Ca:Mg ratio in standard laboratory-reconstituted waters often differs from the ratio in natural surface waters. Copper toxicity was assessed for five different aquatic ...

Arthur, J. and J. Eaton (1971). "CHLORAMINE TOXICITY TO THE AMPHIPOD GAMMARUS PSEUDOLIMNAEUS AND THE FATHEAD MINNOW(PIMEPHALES PROMELAS)." amphipods (gammarus pseudolimnaeus) were subjected to 96 hr and 15 week exposures, and fathead minnows (pimephales promelas) to a 21 week exposure of various chloramine concentrations under continuous flow conditions. The most marked sublethal effects were r...

Ten new species of the genus Gammarus are described from Yunnan-Guizhou Plateau, Southwest China, including Gammarus amabilis sp. nov., G. citatus sp. nov., G. echinatus sp. nov., G. egregius sp. nov., G. eliquatus sp. nov., G. hirtellussp. nov., G. margcomosus sp. nov., G. rivalis sp. nov., G. silendus sp. nov. and G. tranquillus sp. nov. Four of them are stygobite and with no eyes. Detailed i...

Mitochondrial Cytochrome Oxidase Subunit I DNA sequences are a good discriminative marker for phylogenetic studies in crustaceans and especially in amphipoda. In the present study, molecular and morphological data were analyzed to test whether Gammarus lobifer authority and Gammarus balutchi authority which one or two geographically separated but morphologically similar species. The analyses pr...