rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Assessment of bycatch associated with the inshore shrimp fishery in Matagorda Bay, Texas
  name:
    name part: Sparks, Debbie Laura
    name part: 1973-
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 2000
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: xii, 71 leaves : illustrations ; 28 cm.
  abstract: Trawl samples were collected from shrimping vessels throughout the Matagorda Bay System during the 1997 and 1998 Spring and Fall inshore commercial food shrimp seasons. These samples were used to estimate the level of incidental harvest associated with the inshore shrimp fishery, characterize the composition of this bycatch, and identify temporal relationships of constituent species. Monthly mean bycatch biomass levels ranged from 3.32 (December 1998) to 8.71 kg (August 1998) and were highest during summer months. Percent contribution of bycatch biomass to total monthly biomass exceeded 50% during May - September 1997 and July - October 1998. Bycatch:shrimp biomass ratios across seasons ranged from 1.03:1 to 1.68:1. Seasonal abundance ratios for bycatch:shrimp were <1:1 and increased between Spring and Fall of both years. Finfish:shrimp biomass and abundance ratios were as much as 9 times larger than those for invertebrates:shrimp. A total of 108 species (82 finfish, 26 invertebrate) comprised bycatch characterization samples taken, 23 of which have commercial or recreational value. Twenty-two species were dominant (contributing []5% of a monthly total), with the top five species (in terms of biomass and abundance) - blue crab (Callinectes sapidus), Gulf menhaden (Brevoortia patronus), sand seatrout (Cynoscion arenarius), spot (Leiostomus xanthurus), and Atlantic croaker (Micropogonias undulatus) - being important components in other commercial fisheries or recreationally valuable. Assemblages of dominant bycatch constituents (biomass and abundance) varied monthly. Changes in species composition probably resulted from factors such as species specific life history patterns, trawling location, and shrimping techniques. Dominant bycatch species identified in the current study have been documented as bycatch throughout other inshore areas. The majority of individuals taken as bycatch were juveniles, with commercially- and recreationally-important constituents typically …
  note: by Debbie Laura Sparks.
  note: "Major subject: Wildlife and Fisheries Sciences".
  note: Vita.
  note: Also available online.
  note: Issued also on microfiche from Lange Micrographics.
  note: M.S. Texas A&M University 2000.
  note: Includes bibliographical references (leaves 65-68).
  subject:
    topic: Major wildlife and fisheries sciences
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-2000-THESIS-S684
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-2000-THESIS-S684
  record info:
    record content source: TXA
    record creation date: 010425
    record change date: 20220103114416.0
    record identifier: in00001610423