Methods used for the killing and preservation of blowfly larvae, and their effect on post-mortem larval length

A record of the length of the largest larvae collected from a corpse can be used to estimate the age of the oldest larvae present and, therefore, give an estimate of minimum time since death. Consequently, factors that affect post-mortem larval length will impact on any estimate of PMI based on it. Methods used to kill and preserve larvae are known to affect post-mortem length. This study looks at the effects of different preservatives, and variations in the protocol used for killing larvae by immersion in a hot water bath = [hot water killed; HWK], on the length of dead larvae of two common blowfly species. Post-feeding third instar Calliphora vomitoria and Lucilia sericata larvae were either HWK in boiling water and then placed in 80% ethanol or 10% formaldehyde solution, or placed live into the preservatives. For both species, choice of preservative and method of killing significantly affected post-mortem length. There were significant interspecific differences in their response to identical methods of killing and preservation. Additional experiments were carried out where C. vomitoria larvae were HWK in water at 80 and 100 degrees C for 1, 30, 60 and 90 s duration. Both temperature and duration significantly affected post-mortem length. Maximum length was attained after at least 60 s immersion. The amount of post-mortem decomposition that occurred after the larvae were placed in preservative could be greatly reduced by increasing the duration of immersion and/or increasing the water temperature. For the HWK larvae, it was possible to record their length immediately after death and before they had been placed in preservative. This data revealed that where 80% ethanol was used as a preservative the larvae expanded in the preservative. The timing of this expansion was investigated with a sample of C. vomitoria, HWK at 100 degrees C for 30 s and recording post-mortem length immediately after death and again after 3, 6, 9, 12, 24, 27, 30 and 33 h storage in 80% ethanol. Maximum length was recorded after 12 h storage and the rate of expansion was highest during the first 3 h in this preservative. After long-term storage (290 days), larvae killed and preserved in the same way were on average 0.7% longer than immediately after death and 0.6% (0.11 mm) smaller than when last measured (after 28 days storage).     

Reviews

Daniel S. Fogel (ed.), Firm Behaviour in Emerging Market Economies: Cases from the Private and Public Sectors in Central and Eastern Europe. Aldershot: Avebury, 1996, ix + 193 pp., £35.00.

Oldrich D#akedek et al., The Break‐up of Czechoslovakia: an In‐depth Economic Analysis. Aldershot: Avebury, 1996, xi + 208 pp., £32.50.

OECD, OECD Economic Surveys: The Czech Republic. Paris: OECD, 1996, viii + 121 pp.

OECD, OECD Economic Surveys: The Slovak Republic. Paris: OECD, 1996, viii + 159 pp.

Jan Winiecki (ed.), Five Years after June: the Polish Transformation, 1989–1994. London: The Centre for Research into Communist Economies, 1996, vi + 138 pp., £9.95.

Boris Rumer (ed.), Central Asia in Transition: Dilemmas of Political and Economic Development. London: M. E. Sharpe, 1996, xx + 286 pp.

Rosemarie Forsythe, The Politics of Oil in The Caucasus and Central Asia. Oxford: Oxford University Press, 1996, 67 pp., £13.99.

Wei Ding et al., Bosnia and Herzegovina: Toward Economic Recovery. Washington, DC: The World Bank, 1996, xxxi + 68 pp., £8.95.

Dmitri Steinberg, The Soviet Economy 1970–1990. A Statistical Analysis. San Francisco: International Trade Press, 1990, x + 350 pp., $115.00.

Abram Chayes & Antonia Handler Chayes (eds), Preventing Conflict in the Post‐Communist World. Washington, DC: The Brookings Institution, 1996, vii + 605 pp.

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Rosalind Marsh (ed. & trans.), Women in Russia and Ukraine. Cambridge: Cambridge University Press, 1996, xvii + 350 pp., £55.00 h/b, £19.95 p/b.

Jeff Chinn & Robert Kaiser, Russians as the New Minority: Ethnicity and Nationalism in the Soviet Successor States. Boulder, CO: Westview, 1996, xii + 308 pp., £48.50 h/b, £13.50 p/b.

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Adele Lindenmeyr, Poverty is Not a Vice: Charity, Society, and the State in Imperial Russia. Princeton: Princeton University Press, 1996, xiv + 335 pp., $49.50.

Derek Watson, Molotov and Soviet Government. Sovnarkom, 1931–1941. Basingstoke: Macmillan/New York: St Martin's Press, 1996, xxiii + 274 pp., £45.00.

Lars T. Lih, Oleg V. Naumov & Oleg V. Khlevniuk (eds), Stalin's Letters to Molotov, 1925–1936. London: Yale, 1995, xviii + 276 pp., £16.95.

Sekrety Gitlera na stole u Stalina: razvedka i kontrrazvedka o podgotovke germanskoi agressii protiv SSSR, mart‐iyun’ 1941 g. Dokumenty iz Tsentral'nogo arkhiva FSB. Moscow: Mosgorarkhiv, 1995, 254 pp.     

The ethics of managed care: a dose of realism

This article examines the ethics of medical practice under managed care from a pragmatic perspective that gives physicians more useful guidance than existing ethical statements. The article begins by stating the authors' starting premises and framework for constructing a realistic set of ethical principles: namely, that bedside rationing in some form is permissible; that medical ethics derive from physicians' role as healers; that actual agreements usually trump hypothetical ones; that ethical statements are primarily aspirational, not regulatory; and that preserving patient trust is the primary objective. The authors then articulate the following concrete ethical guides: financial incentives should influence physicians to maximize the health of the group of patients under their care; physicians should not enter into incentive arrangements that they would be embarrassed to describe accurately to their patients or that are not in common use in the market; physicians should treat each patient impartially, without regard to source of payment, and in a manner consistent with the physician's own treatment style; if physicians depart from this ideal, they must tell their patients honestly; and it is desirable, although not mandatory, to differentiate medical treatment recommendations from insurance coverage decisions by clearly assigning authority over these different roles and by having physicians to advocate for recommended treatment that is not covered.     

Reviews

Arms and the African: Military Influences on Africa's International Relations edited by William J. Foltz and Henry S. Bienen Yale University Press, New Haven (Connecticut), and London, 1985. xv plus 221 pp. including map, tables, appendix and index. $22,50.

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Kenya: The Quest for Prosperity by Norman N. Miller Westview Press, Boulder (Colorado), and Gower, London, 1984. x plus 180 pp. including map, illustrations, figures, tables, notes, bibliography and index. £14,45.

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John Blades Currey, 1850 to 1900: Fifty Years in the Cape Colony edited by Phillida Brooke Simons Brenthurst Press, Johannesburg, 1986. 275 pp. including illustrations, notes, appendix, bibliography and index. R.195,00.

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