Accession Number:

ADA210182

Title:

Species Profiles. Life Histories and Environmental Requirements of Coastal Fishes and Invertebrates (Mid-Atlantic). Spot

Descriptive Note:

Biological rept.

Corporate Author:

NORTH CAROLINA STATE UNIV AT RALEIGH

Report Date:

1989-02-01

Pagination or Media Count:

21.0

Abstract:

Spot Leiostomus xanthurus is an important species to recreational fishermen and to the commercial fishing industry. Landings in Virginia are reported to be nearly 2 million pounds annually and in North Carolina 3 to 7 million pounds. Spot are distributed throughout the Mid-Atlantic area and their larvae are found up to 63 nautical miles from land. The larvae are reported to metamorphose to the juvenile phase near estuarine inlets and the juveniles appear in estuaries from about mid-December to mid-April where they remain until September or October. The juveniles may constitute 80-90 of the total number of fish present in tidal creeks and seagrass meadows. Growth rates weight of juvenile spot vary but are reported as 3 per day. Lengths of young-of-year were reported by various authors to be about 80-181 mm age-1, 122-230 mm age-2, 215-290 mm and age-3, 275 mm. Relatively few spot are over 3 years old. Their diet includes benthic fauna which varies with location. Spot may be eaten by a variety of predators, including striped bass. Spot occur at temperatures ranging from 8-31 C and at saltinities of 0-66 ppt. They were shown to increase their oxygen consumption with weight, swimming speed and activity. They appear to be more efficient consumers of oxygen than some major estuarine species, such as the striped bass and white perch. Keywords Fish Growth physiology Salinity Temperature Fisheries Feeding habits Life cycle Oxygen Leiostomus xanthurus Spot Habitat requirements Reproduction physiology.

Subject Categories:

  • Biology
  • Biological Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE