Abundance and Distribution of Ichthyoplankton along an Inshore-Offshore Transect in Onslow Bay, North Carolina

Powell, Allyn B. and Robbins, Roger E. (1994) Abundance and Distribution of Ichthyoplankton along an Inshore-Offshore Transect in Onslow Bay, North Carolina. NOAA/National Marine Fisheries Service, (NOAA Technical Report NMFS, 120)

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Abstract

The distribution and abundance of ichthyoplankton was investigated from November 1979 to March 1980 along a transect from coastal to continental slope waters in Onslow Bay, North Carolina. Representatives of 66 families were collected; 24 of which were tropical families, a category that also includes families of typically oceanic and deep-sea fishes. Larvae of tropical species were collected in coastal and shelf waters, demonstrating the intrusion of Gulf Stream waters onto the continental shelf. From December through March, frontal waters that separated cold open-shelf surface waters from warm Gulf Stream surface waters were observed. Higher abundances of fish larvae were sometimes, but not consistently, associated with frontal waters. A great diversity of taxa was collected in offshore waters, and densities of larvae were low in coastal waters; low densities were attributed to gear selectivity rather than low larval abundance. Larvae of commercially and recreationally important estuarine-dependent species, especially Leiostomus xanthus and Micropogonias undulatus, were dominant components of the ichthyoplankton. Representatives of the families Bothidae, Clupeidae, Gadidae, Gonostomatidae, Myctophidae, Ophidiidae, and Sparidae were also important components of the ichthyoplankton. Larvae of species representing two strikingly different life history types-mesopelagic and estuarine-dependent frequently cooccurred.(PDF file contains 32 pages.)

Item Type: Monograph or Serial Issue
Title: Abundance and Distribution of Ichthyoplankton along an Inshore-Offshore Transect in Onslow Bay, North Carolina
Personal Creator/Author:
CreatorsEmail
Powell, Allyn B.
Robbins, Roger E.
Series Name: NOAA Technical Report NMFS
Number: 120
Date: 1994
Publisher: NOAA/National Marine Fisheries Service
Issuing Agency: United States National Marine Fisheries Service
Subjects: Management
Fisheries
Item ID: 2695
Depositing User: Patti M. Marraro
Date Deposited: 31 Oct 2009 18:55
Last Modified: 29 Sep 2011 18:33
URI: http://aquaticcommons.org/id/eprint/2695

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