RESUMO
How chronic exposure to aquatic pollution affects reproductive traits was assessed in nesting wild-caught plainfin midshipman Porichthys notatus in areas with low and high contaminant exposure on Vancouver Island, British Columbia. Males in high-exposure areas had a greater degree of testicular asymmetry, sperm with shorter heads and fewer live eggs in their nests. The results of this study provide important insights into the potential consequences of contaminant exposure on the reproductive physiology of wild-caught fishes.
Assuntos
Batracoidiformes/fisiologia , Reprodução/efeitos dos fármacos , Reprodução/fisiologia , Poluentes Químicos da Água/farmacologia , Animais , Colúmbia Britânica , Exposição Ambiental , Feminino , Masculino , Espermatozoides/efeitos dos fármacos , Testículo/efeitos dos fármacosRESUMO
A computer interview program that uses a subjective Bayesian probability model to assess suicide risk was evaluated. Predictions made by clinicians for 52 patients were compared with predictions made by the computer for the same patients. The computer was significantly (p = .001) better at predicting attempters, and clinicians were significantly (p = .01) better at predicting nonattempters. An analysis of receiver operating characteristic curves showed that the computer had better overall discrimination, but the difference was nonsignificant.
