In situ target strength estimates of visually verified orange roughy

Characterizing uncertainty in target-strength measurements of a deepwater fish: orange roughy (Hoplostethus atlanticus)

The variability of ensemble 38 kHz, target-strength (TS38) estimates for orange roughy (Hoplostethus atlanticus) (4.9 dB, factor of 3.1) in deep water (>600m) limits the use of echo integration for absolute-biomass estimates. Orange roughy are high in oil content, have a wax ester swimbladder, and show an active-avoidance response to sampling gear. The interpretations of ensemble, in situ targe...

Comparison of in situ, ex situ, and backscatter model estimates of Pacific hake (Merluccius productus) target strength

To convert acoustic energy into estimates of fish density, the target strength (TS) of a representative fish must be known. TS is a measure of the acoustic reflectivity of a fish, which is variable depending on the presence of a swimbladder, the size of the fish, its behavior, morphology, and physiology. The most common method used to estimate the TS of a fish is a TS-to-length empirical regres...

Orange roughy is rich with indigestible wax esters.

To the Editor—An outbreak of over 600 cases of keriorrhoea took place in Hong Kong in late 2006 and early 2007. Patients complained of diarrhoea of orange to brown oil. The aetiology was traced to the consumption of oilfish (Ruvettus pretiosus) and escolar (Lepidocybium flavobrunneum) which were pushed as codfish or sashimi. These two types of fish have high oil contents, accounting for about 2...

Stock structure of Australian populations of orange roughy analysed using microsatellites

Genetic Analysis of Visually Scored Orange Kernel Color in Maize

Increasing levels of provitamin A carotenoids in maize (Zea mays L.) grain through plant breeding has potential to help humans suffering from vitamin A deficiency. In parts of Africa where this deficiency is prevalent, there is a consumer preference for white maize grain and an avoidance of yellow maize grain. White grain has minimal levels of carotenoids whereas yellow grain can have appreciab...