Age determination, reproduction, and growth of the Franciscana dolphin, Pontoporia blainvillei.

@inproceedings{Kasuya1979AgeDR,
  title={Age determination, reproduction, and growth of the Franciscana dolphin, Pontoporia blainvillei.},
  author={Takahiro Kasuya and Brownell R.L.Jr.},
  year={1979}
}
An examination was made of 260 Franciscana dolphins taken off the Uruguayan coast. Deposition of dentinal and cementa! layers is annual with the formation of an unstainable layer between August and November. Cementum deposition continues after the probable cessation of dentine deposition at four to seven years. Females usually have a 2-year reproductive cycle. Calves are born at a length from 70 to 75 cm after a gestation of about 10.5 months, and weaned before one year of age. Sexual maturity… CONTINUE READING

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