Relationship between fish size and otolith length for 63 species of fishes from the Eastern North Pacific Ocean

Otoliths commonly are used to determine the taxon, age, and size of fishes. This information is useful for population management, predator-prey studies, and archaeological research. The relationship between the length of a fish and the length of its otoliths remains unknown for many species of marine fishes in the Pacific Ocean. Therefore, the relationships between fish length and fish weight, and between otolith length and fish length, were developed for 63 species of fishes caught in the eastern North Pacific Ocean. We also summarized similar relationships for 46 eastern North Pacific fish species reported in the literature. The relationship between fish length and otolith length was linear, and most of the variability was explained by a simple least-squares regression (r 2 > 0.700 for 45 of 63 species). The relationship between otolith length and fish length was not significantly different between left and right otoliths for all but one fish species. Images of otoliths from 77 taxa are included to assist in the identification of species. (PDF file contains 38 pages.)

Cruise Report 63-S-1 - Exploratory

(PDF contains 3 pages.)

Cruise Report 63-S-2 - Exploratory

(PDF contains 4 pages.)

Cruise Report 63-S-3 - Rockfish

(PDF contains 4 pages.)

Cruise Report 63-S-4 - Albacore

(PDF contains 3 pages.)

Cruise Report 63-S-5, 63-M-1 - Abalone

(PDF contains 5 pages.)

Cruise Report 63-S-6 - Shrimp

(PDF contains 7 pages.)

Cruise Report 63-S-7 - Crab

(PDF contains 5 pages.)

Cruise Report 63-S-8 - Crab

(PDF contains 3 pages.)

Cruise Report 63-S-9 - Shrimp

(PDF contains 3 pages.)

Individual weight, development time and yield of different stages of Tropodiaptomus incognitus (Crustacea: Copepoda). [Translation from: Cahiers ORSTOM, Serie Hydrobiologie 4(1) 63-70, 1970. ]

Observations of individual weight, duration of development and production of different stages of Tropodiaptomus incognitus are presented. The study is based on data gathered from Lake Chad in 1968.

Investigations of the sand movements in the district of the Elbe estuary [Translation from: Hamburger Kuestenforschung 19, [pages 61-63 only], 1975]

The present work is concerned with the processes of sand movement in the region of the Elbe estuary. In the first part the results of various investigations which have given indications of the regional transport directions are collected together. The interpretation of the results of a large number of continuous current recordings gives a picture of the resulting transport to be expected under the influence of the tides with those current conditions. This partial translation of the original paper provides the summary of this paper the regional distribution of the flood and ebb flow zones.

Front pages with contents of No. 63, 2005

Cover. Contents.