Varamientos de mamíferos marinos durante primavera y otoño y su relación con la actividad humana en el norte del Golfo de California

Abstract

A STRADING RECORDS OF MARINE MAMMALS FROM NOVEMBER 1990 TO JUNE 1993 IN THE NORTHEN PART OF THE GULF OF CALIFORNIA IS PRESENTED. IN EACH STRADING THE DATE, LOCALITY, SPECIES, BODY MEASUREMENTS, AND SEX WERE RECORDED AND AT LEST THE SKULLS WERE COLLECTED. THE COMMON DOLPHIN DELPHINUS DELPHI (97.9659, THE BUTTLENOSE DOLPHIN TURSIUPS TRUNCATUS (35.19%) AND THE CALIFORNIA SEA LION (17.59%) WERE THE SPECIES MOST STRANDED, 12.17% OF THE STRANDED ANIMALS PRESENTED SIGNS OF INJURY HUMAN ACTIVITY LIKE HARPOON MARKS, BULLET WOUNDS OR ANIMALS IN GILLNETS. THE HIGH INIDENCE OF THE FISHERY ACTIVITIES OR BY THE HIGHER ABUNDANCE IN NUMBER OF ANIMAL AND NUMBER OF SPECIES IN THIS PART OF THE GULF OF CALIFORNIA. FIVE ANIMALS PRESENTED SCARS MADE BY SHARKS OR KILLER WHALES.