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Damage, recovery and survival of 0-group mulloway, Argyrosomus japonicus, after simulated escape through square mesh (2005)

Miller, M. E. ; Broadhurst, M. K. ; Barker, D. T. ; [et al.]

Berlin, Germany : Blackwell Verlag GmbH

Journal of applied ichthyology 21 (2005), S. 0

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ISSN: 1439-0426

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: A laboratory experiment was carried out to quantify and compare the physical damage (measured as scale loss), recovery and survival of two size categories [small: 48–85 mm total length (TL); large: 78–148 mm TL] of 0-group mulloway, Argyrosomus japonicus, after simulated escape through square-shaped mesh (bar length of 21.5 mm). Regardless of their size, fish that were fatigued to exhaustion and forced through square meshes sustained significantly more (i.e. 〉1.8 times) scale loss than did control fish that were only fatigued. However, the total scale loss incurred was 〈5% and significantly improved 7 days after treatment. Survival rates over a 2-week observation period were 100 and 〉97% for treatment and control fish, respectively. The results support the utility of square mesh for reducing the prawn-trawl fishing mortality of unwanted bycatch.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1439-0426.2004.00598.x

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Incidence of diabetes amongst people aged 18–50 years in nine British towns: A collaborative study (1982)

Barker, D. J. P. ; Gardner, M. J. ; Power, C.

Springer

Diabetologia 22 (1982), S. 421-425

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ISSN: 1432-0428

Keywords: Incidence of Type 2 diabetes ; socio-economic environment ; social class

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary The incidence of diabetes among people aged 18–50 years has been studied prospectively in nine towns, chosen to encompass the range of socioeconomic conditions and spread of latitude in England and Wales. The incidence of Type 1 (insulindependent) diabetes in this age group varied little between the towns. However, the incidence of Type 2 (non-insulin-dependent) diabetes was markedly higher in the towns with ‘worse’ socio-economic conditions. The mean incidences were 23 per 100000 for the three ‘worse’ towns and 10 per 100000 for the three ‘better’ towns. This was not explicable by an association between the disease and social class. This finding has to be reconciled with known and hypothesised influences in the aetiology of Type 2 diabetes.