OBJECTIVES Mark/recapture (or capture-recapture) is a simple technique commonly applied to estimate the hypothetical total (including undercount) in a register composed of cases from two or more independent and separately incomplete case lists. This paper seeks to illustrate serious drawbacks in the use of the mark/recapture technique when applied to injuries. SETTING AND SUBJECTS Northumbria...

The analysis of the ACT Drug Indicators Project data with capture-recapture techniques was supported by a grant from the Criminology Research Council. The views expressed are the responsibility of the author and are not necessarily those of the Council. 00010058 Community service order scheme for adult offenders : an alternative to imprisonment.

In recent years capture-recapture methods have experienced important theoretical developments. New application areas have been added to their spectrum, in turn supporting new developments on the methodological side. Hence it appears appropriate to take a closer look at some of these developments. This is the objective of this special theme in the current issue of the Biometrical Journal. The co...

Diel host-seeking activity of adult Chrysops celatus Pechuman was studied in northwestern Florida during June 1993 and 1994. Primary peak activity occurred at 0645 h (CST) with a secondary peak at 1945 h. Host-seeking behavior was correlated with relative humidity but not temperature and light intensity. No host-seeking activity was observed at darkness. In all studies, the majority of flies in...

We present a capture-recapture modeling approach to the estimation of survival probability of dependent chicks when only the attending adult bird is marked. The model requires that the bird's nest is found prior to hatching and that the number of eggs that hatch are counted. Subsequent data are sightings of the marked adult and a count of chicks with the adult. The model allows for imperfect de...

Three potentially important aspects of mark-release-recapture experimentation were addressed: 1) source of mosquitoes for release, 2) time of release, and 3) weather during recapture. Culex tarsalis Coquillett mosquitoes collected as adult host-seeking females from dry ice-baited traps (CO2 traps) operated within the study area (local) were recaptured more frequently than females collected from...

Longevity of and in the Rhizoprionodon terraenovae Carcharhinus acronotus western North Atlantic Ocean was examined using direct age estimates from vertebral sections and tag-recapture data. Time-at-liberty ranged from 7.7-14.0 years (mean =10.1) for and 10.9-12.8 years (mean =11.9) for R. terraenovae C. . Maximum estimated longevity was determined to be 19.8 years acronotus through tag-recaptu...