At sites near Manaus, Amazonas, Brazil we measured the impact of forest fragmentation on populations male euglossine bees. The visitation rates 15 species bees to three chemical attractants were determined for continuous forest; isolated 1, 10, and 100 ha fragments; a cleared area. For most species, rate declined with fragment size, even though openings separating fragments tended be narrow (as little as m). Preand post-isolation comparisons individual exhibited same trend. Bee attracted...

Abstract Ozone (O 3 ) is a powerful oxidant that has been used in both the aquaculture and water treatment industries to improve quality reduce pathogens during pretreatment, of effluent, as continual RAS operations, for bivalve depuration. As ozone can be toxic aquatic organisms, technology also investigated destroy invasive or nuisance species, other research highlighted negative effects residual on courses. ozone‐produced oxidants operations have therefore typically removed from prior...

Abstract Hispaniola is a geotectonically complex island consisting of two palaeo‐islands that docked c. 10 Ma, with further geological boundary subdividing the southern palaeo‐island into eastern and western regions. All three regions have been isolated by marine barriers during late Cenozoic possess biogeographically distinct terrestrial biotas. However, there currently little evidence to indicate whether Hispaniolan mammals show distributional patterns reflecting this geotectonic history,...

We studied the effect of parasitic invasion by barnacle Sacculina carcini on shore crabs Carcinus maenas collected from Menai Straits in North Wales, UK. A significant reduction serum protein and circulating granular, semi-granular hyaline blood cells was observed parasitised individuals, while ammonium glucose concentrations were significantly increased. No difference hepatopancreatic glycogen concentration found between healthy crabs. Histological analysis showed apparent removal fibrillar...

A bottleneck of crustacean larval culture concerns nutrition and associated cannibalism in communal rearing systems, which impact on survival, development growth. For early-stage European lobster, Homarus gammarus larvae, feeding ecology body composition are largely unknown. We initiated four progressive experiments (novel feed types, regime size effects) growth to inform update husbandry protocols. Performance larvae offered a dry commercial was not significantly different compared with...

One approach to ongrow juvenile European lobster, Homarus gammarus, is utilize land based rearing systems, incorporating automated feeding, individual culture and provision of stable pelleted feeds, preferably using sustainable ingredients. We initiated three feeding experiments investigate the general suitability ingredients produced from seafood by-products as novel feeds for H. in terms promoting survival, development growth post-larval lobsters post-larvae (PL) stage IV first (stage V)....

DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 68:83-87 (2005) - doi:10.3354/dao068083 Unchanged prevalence shell disease in edible crab Cancer pagurus four years after decommissioning a sewage outfall at Langland Bay, UK Adam Powell, Andrew F. Rowley* Department Biological Sciences & Institute Environmental Sustainability, University Wales Swansea, Singleton...

The Norway lobster, Nephrops norvegicus, is a valuable and commonly exported European decapod crustacean, which experiences stress from point of capture onward transport. Stressors such as air exposure duration (i.e. emersion period) temperature have been studied previously. We investigated whether mortality could be reduced by decreasing road vibrations during transport, how physiological measurements were influenced in transport simulation experiment, reflecting typical short journey along...

A freshly dead bigeye tuna Thunnus obesus was washed ashore near Burry Port, Wales (51°40′ N; 4°15′ W) in August, 2006. This is only the third occasion that species has been observed British waters, and largest most northerly recorded specimen.

The Norway lobster, Nephrops norvegicus is a valuable European decapod, particularly when sold live, although along the supply chain lobsters experience range of extreme stressors during and immediately after capture, onward transportation. To improve quality quantity live product, laboratory experiments transport simulations have investigated effect stress, emersion temperature, on physiology immune system, typically via blood (haemolymph) assays. This study relatively neglected stressor,...

The Norway lobster, Nephrops norvegicus is a valuable European decapod, particularly when sold live, although along the supply chain lobsters experience range of extreme stressors during and immediately after capture, onward transportation. To improve quality quantity live product, laboratory experiments transport simulations have investigated effect stress, emersion temperature, on physiology immune system, typically via blood (haemolymph) assays. This study relatively neglected stressor,...