کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6385839 1626807 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Frailty models for the estimation of tag shedding rates with tagger effects
ترجمه فارسی عنوان
مدل های فرعی برای برآورد میزان تردد با اثرات تلگرامی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
چکیده انگلیسی

Double tagging studies are used to estimate the proportion of originally tagged fish that shed their tags prior to recapture, but models typically fitted to double tag recoveries have been subject to restrictive assumptions. For example, a common assumption is that the shedding rates of all tags are identical. Hearn et al. (Hearn, W.S., Leigh, G.M., Beverton, R.J.H., 1991. ICES J. Mar. Sci. 48, 41-51) found differences in shedding rates between taggers, and demonstrated algebraically that such differences lead to biases in estimators of shedding rates. However, widely applicable models that account for differences in shedding rates between taggers have not been developed. We adapt the proportional hazards model to the problem of estimating tag shedding rates from double-tag recovery data. Differences in shedding rates between taggers are modelled using multiplicative random effects or frailties. The frailty models are fitted to recoveries from a 1990s tagging study of southern bluefin tuna (Thunnus maccoyii) at exact times-at-liberty and the results compared with models previously applied for this species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fisheries Research - Volume 161, January 2015, Pages 303-311
نویسندگان
, , ,