Marine organism are often kept, cultured, and experimented on in running seawater aquaria. However, surprisingly little attention is given to the nutrient composition of the water flowing through these systems, which is generally assumed to equal in situ conditions, but may change due to the presence of biofouling organisms. Significantly lower bacterial abundances and higher inorganic nitrogen...

Zoos and aquaria are dynamic informal learning environments that require constant sensory (often visual) access, and are thus often inaccessible to visitors with vision impairments. There remain few guidelines for designing accessible dynamic exhibits. We present a model of mediated visitor-exhibit interaction that begins to address this class of environments. We discuss plans to operationalize...

....................................................................................................................... 5 INTRODUCTION .............................................................................................................. 6 METHODS FOR SPAWNING THE ENDANGERED MOHAVE TUI CHUB IN AQUARIA .........................................................................................

Anentome helena (von dem Busch in Philippi, 1847) is known among aquarium enthusiasts as the “assassin snail”, and is usually kept to prey on other snail species that are considered pests in home aquaria. There have been concerns that, given its prevalence in the ornamental pet trade, it is only a matter of time before this predator is introduced to the wild. We report the first occurrence of e...

Public aquaria showcase aquatic life while raising awareness and educating the public on biodiversity need for conservation. Recently, have followed in footsteps of zoos by taking more directed approaches species conservation as well leveraging animals their collection to fill biological knowledge gaps through research. Similar zoos, are able house that not feasible care traditional academic se...

In order to investigate the effects of artificial substrates on shrimp growth, spatial distribution and non-specific immunity factors, such as phenoloxidase (PO), superoxide dismutase (SOD), peroxidase (POD), antibacterial activity (Ua), lysozyme (Ul) and hemolysin activity, 30-day old Litopenaeus vannamei post-larvae (PL30) were reared intensively for 60 days at a density of 500 shrimp m of wa...

The aim of this study was to investigate the effects of date palm fruit extracts (DPFE) on skin mucosal immunity, immune related genes expression and growth performance of fry common carp (Cyprinus carpio). One hundred and twenty specimens (4.06 ± 0.13 g) were supplied and allocated into six aquaria; specimens in three aquaria were fed non-supplemented diet (control) while the fish in the other...

The geomicrobiology of crater lake microbialites remains largely unknown despite their evolutionary interest due to their resemblance to some Archaean analogs in the dominance of in situ carbonate precipitation over accretion. Here, we studied the diversity of archaea, bacteria and protists in microbialites of the alkaline Lake Alchichica from both field samples collected along a depth gradient...