Using craniometrical predictors to infer body size of Antillean manatees

摘要: Body size determines many physiological and ecological variables; however, there are few studies on this parameter for the Antillean manatee (Trichechus manatus manatus). We studied an osteological collection data­ bases of manatees in Mexico to infer body mea­ surements determine mass (BM)/body length (BL) relationship. The sample included 165 specimens: skulls (n = 60), necropsies 51), indivi­ duals captured health assessment purposes 54). Specific regression equations estimating BM were derived using following craniometrical parameters: condylobasal (BSL), occipital condyle width (OCW), foramen magnum (FMW). OCW FMW not significantly correlated with BL. equation fit­ ted model was BL ­121.644+10.8861×BSL (p 95%). Regression proved be useful when only highly decomposed carcasses or skull dry bones avail­ able, weight it is impossible do directly. Studies biology history age determina­ tion T. m. required order establish adequate classification.