28.06.2013 Views

Fishery bulletin of the Fish and Wildlife Service - NOAA

Fishery bulletin of the Fish and Wildlife Service - NOAA

Fishery bulletin of the Fish and Wildlife Service - NOAA

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

STUDIES ON THE STRIPED BASS (Rqccus saxatilis)<br />

OF THE ATLANTIC COAST 1<br />

By DANIEL MEHHIMAN, Osborn Zoological Laboratory, Yale University, formerly Temporary<br />

Investigator, <strong>Fish</strong> <strong>and</strong> <strong>Wildlife</strong> <strong>Service</strong> 1<br />

Introduction<br />

Acknowledgments<br />

Description <strong>of</strong> <strong>the</strong> striped bass<br />

Size <strong>and</strong> range <strong>of</strong> <strong>the</strong> striped bass<br />

Review <strong>of</strong> <strong>the</strong> literature on <strong>the</strong> life history<br />

<strong>of</strong> <strong>the</strong> striped bass<br />

Fluctuations in abundance <strong>of</strong> <strong>the</strong> striped<br />

bass<br />

Spawning habits <strong>and</strong> early life history<br />

<strong>of</strong> <strong>the</strong> striped bass<br />

Sex <strong>and</strong> age at maturity<br />

CONTENTS<br />

Page<br />

1<br />

2<br />

2 4<br />

15<br />

20<br />

INTRODUCTION<br />

Age <strong>and</strong> rate <strong>of</strong> growth<br />

Migrations. .<br />

Origin <strong>of</strong> <strong>the</strong> dominant 1934 year-class<br />

Food <strong>of</strong> <strong>the</strong> striped bass<br />

Parasites <strong>and</strong> abnormalities <strong>of</strong> <strong>the</strong> striped<br />

bass<br />

Discussion<br />

Recommendations<br />

Summary <strong>and</strong> conclusions<br />

Tables<br />

Bibliography<br />

The following account <strong>of</strong> <strong>the</strong> life history <strong>and</strong> habits <strong>of</strong> <strong>the</strong> striped bass (Roccus<br />

saxatilis) is <strong>the</strong> result <strong>of</strong> an investigation originally sponsored by <strong>the</strong> Connecticut<br />

State Board <strong>of</strong> <strong>Fish</strong>eries <strong>and</strong> Game, <strong>and</strong> undertaken by <strong>the</strong> author.<br />

The main objectives <strong>of</strong> this investigation, throughout its entire course, were to<br />

obtain information on <strong>the</strong> life history <strong>and</strong> habits <strong>of</strong> <strong>the</strong> striped bass, to study <strong>the</strong><br />

fluctuations in abundance <strong>of</strong> this species <strong>and</strong> <strong>the</strong>ir causes, <strong>and</strong> to accumulate material<br />

on <strong>the</strong> effect <strong>of</strong> <strong>the</strong> fishery—both commercial <strong>and</strong> sporting—on <strong>the</strong> present supply.<br />

The striped bass investigation was begun on April 1, 1936, <strong>and</strong> was concluded<br />

on June 30, 1938. Its headquarters have been <strong>the</strong> Osborn Zoological Laboratory,<br />

Yale University, New Haven, Conn., <strong>and</strong>, during <strong>the</strong> summer months, <strong>the</strong> Niantic<br />

River, Conn.—an area where this species is more easily available for study than<br />

elsewhere in <strong>the</strong> immediate vicinity. During <strong>the</strong> first 3 months <strong>the</strong> work was financed<br />

by a group <strong>of</strong> Connecticut sportsmen. The Connecticut State Board <strong>of</strong> <strong>Fish</strong>eries<br />

<strong>and</strong> Game <strong>the</strong>n supported <strong>the</strong> investigation through December 31, 1937, <strong>and</strong> also<br />

supplied much <strong>of</strong> <strong>the</strong> equipment essential to <strong>the</strong> progress <strong>of</strong> <strong>the</strong> work. By that time<br />

it had become apparent, as a result <strong>of</strong> tagging experiments, that <strong>the</strong> striped bass was<br />

a highly migratory species, <strong>and</strong> that <strong>the</strong>refore <strong>the</strong> problem was essentially coastwise<br />

in its scope. Clearly <strong>the</strong> objectives could not be accomplished satisfactorily by studies<br />

in one limited area. The American <strong>Wildlife</strong> Institute generously contributed a substantial<br />

sum in March 1937 when a break in <strong>the</strong> continuity <strong>of</strong> <strong>the</strong> work would have<br />

been a severe blow to its progress, <strong>and</strong> thus made it possible for <strong>the</strong> investigation to<br />

extend its scope to include a large portion <strong>of</strong> <strong>the</strong> Atlantic coast. On July 1, 1937,<br />

<strong>the</strong> United States Bureau <strong>of</strong> <strong>Fish</strong>eries insured <strong>the</strong> financial backing <strong>of</strong> <strong>the</strong> investigation<br />

for a full year from that date, <strong>and</strong> <strong>the</strong> State Board <strong>of</strong> <strong>Fish</strong>eries <strong>and</strong> Game appropriated<br />

a sufficient amount for <strong>the</strong> continuation <strong>of</strong> <strong>the</strong> work within Connecticut.<br />

' The <strong><strong>Fish</strong>ery</strong> Bulletin <strong>of</strong> <strong>the</strong> <strong>Fish</strong> <strong>and</strong> <strong>Wildlife</strong> <strong>Service</strong> is a continuation <strong>of</strong> <strong>the</strong> Bulletin <strong>of</strong> <strong>the</strong> Bureau <strong>of</strong> <strong>Fish</strong>eries, which ended<br />

with vol. 49. The <strong>Fish</strong> <strong>and</strong> <strong>Wildlife</strong> <strong>Service</strong> was established on Juno 30, 1940, by consolidation <strong>of</strong> <strong>the</strong> Bureau <strong>of</strong> <strong>Fish</strong>eries <strong>and</strong> <strong>the</strong><br />

Bureau <strong>of</strong> Biological Survey.<br />

277Б89—41- 1<br />

Page<br />

22<br />

33<br />

46<br />

52<br />

55<br />

56<br />

62<br />

63<br />

66<br />

75

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!