Clifford A. Hui
1979
<p><span>Aerial surveys totalling 21,902 km were analyzed in the Southern California Bight. Although the genus </span><i>Delphinus</i><span> is easily recognizable from aircraft, the different species are not detectable in these flights. </span><i>Delphinus</i><span> occur more frequently in areas of high relief than in areas of low relief. The depth of the water does not appear to influence distribution of </span><i>Delphinus</i><span>. The availability of prey species over areas of different relief may be a major factor influencing these distribution patterns. Although the relative frequencies of occurrence of </span><i>Delphinus</i><span> within depth and relief classes do not change from one half of the year to the next, the aggregation sizes differ significantly. From May through October, when anchovies are the major component of the diet and are more available as indicated by the live catch fishery records, </span><i>Delphinus</i><span> aggregations have a median size of 250. From November to April the median aggregation size is 40.</span></p>
application/pdf
10.2307/1380092
en
Oxford Academic
Undersea topography and distribution of dolphins of the genus Delphinus in the Southern California Bight
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