Early postnatal growth of the spotted dolphin, Stenella attenuata, in the offshore Eastern Tropical Pacific.

Hohn, Aleta A. and Hammond, P.S. (1984) Early postnatal growth of the spotted dolphin, Stenella attenuata, in the offshore Eastern Tropical Pacific. Fishery Bulletin, 83(4), pp. 553-566.

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Abstract

Estimates of length at birth and early postnatal growth are made for the northern and southern populations of the offshore spotted dolphin in the offshore eastern tropical Pacific. Length at birth is estimated to be 85.4 cm for the northern population and 83.2 cm for the southern population. Analyses of series of monthly distributions of length revealed two cohorts born each year in the northern population, at least in the northern inshore part of its geographic range, but only one cohort born each year in the southern population. Growth curves fitted to the means of the monthly distributions of length gave estimates of length at 1 year of 126.2 and 132.6 cm and length at 2 years of 154.3 and 154.9 cm for the two cohorts in the northern population. and length at 1 year of 127.9 cm for the southern population. A growth curve fitted to lengths and ages (in dental growth layer groups) from the northern population gave estimates of lengths at 1 and 2 years of 123.0 and 143.0 cm, respectively.

Item Type: Article
Title: Early postnatal growth of the spotted dolphin, Stenella attenuata, in the offshore Eastern Tropical Pacific.
Personal Creator/Author:
CreatorsEmail
Hohn, Aleta A.
Hammond, P.S.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 83
Number: 4
Page Range: pp. 553-566
Date: 1984
Issuing Agency: United States National Marine Fisheries Service
Subjects: Ecology
Conservation
Fisheries
Item ID: 2461
Depositing User: Patti M. Marraro
Date Deposited: 21 Jul 2009 14:25
Last Modified: 13 Feb 2014 17:35
URI: http://aquaticcommons.org/id/eprint/2461

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