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  • 1
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    Study of the Texas Bay Populations of Juvenile Shrimp, Penaeus aztecus, Penaeus setiferus, and Penaeus duorarum (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14185 | 9596 | 2020-08-31 20:28:08 | 14185 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: Postlarvae were found entering Aransas Bay in appreciable numbers in the spring of 1963. Late post-larval and early juvenile stages of brown shrimp, Penaeus aztecus, were found in tertiary bays in April. White shrimp, P. setiferus were found in May and June. Brown shrimp grew about 0.8 mm per day, while white shrimp grew about 1.1 mm per day. The first wave appeared to be smaller than latter waves. Small brown shrimp were found moving through the inshore Gulf in large numbers in June and July. White shrimp reached a larger size in the bays in June and July. White shrimp reached a larger size in the bays and supported a large commercial bay fishery. Late fall waves of white shrimp left the bays at a smaller size (probably to escape low water temperatures). Preliminary data indicate the 1963 shrimp landings increased 25% over 1962 landings.
    Keywords: Ecology ; penaeid shrimp ; juveniles ; landing statistics ; white shrimp ; Penaeus setiferus ; brown shrimp ; Penaeus aztecus ; Penaeus duorarum ; growth
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 49
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  • 2
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    A study of commercial shrimp populations in coastal bays of Texas,1968 (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14243 | 9596 | 2020-08-23 21:20:15 | 14243 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: In spring, the growth of brown shrimp, Penaeus aztecus, in Texas bays, including Galveston Bay, was delayed by cold water. Low salinity patterns of upper coastal bays confined the young to more saline lower regions of estuaries. The gulfward migration began in late May. By July most had left the bays. Heavy rainfall and runoff may have been beneficial to white shrimp, Penaeus setiferus. They were abundant in samples and over 12 million pounds were landed commercially.
    Keywords: Ecology ; penaeid shrimp ; temperature effects ; Penaeus aztecus ; salinity effects ; Penaeus setiferus ; growth ; estuaries ; population dynamics ; GBIC
    Repository Name: AquaDocs
    Type: book_section
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  • 3
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    Study of Sand Seatrout of the Galveston Bay Area (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14274 | 9596 | 2020-10-17 16:17:25 | 14274 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: Sand seatrout (Cynoscion arenarius Ginsberg) were studied in the Galveston Bay area to provide information on seasonality, population composition, food items, growth, and spawning. Tagging efforts resulted in 518 tagged fish and a return of 16 tags during the 1968-70 period. Tag recovery data suggest a migration from the upper bay to the lower bay and Gulf waters in December and return in March. Electrophoretic analysis of multiple hemoglobin protein types were studied from 96 sand seatrout blood samples. Five protein types were observed without discernible differences that could be attributed to population heterogeneity. Analysis of stomach content revealed crustacea and fish as primary food items. Gonad development stages indicate a spawning period from March through August.
    Keywords: Ecology ; marine fish ; sand seatrout ; Cynoscion arenarius ; growth ; seasonality ; community composition ; food preferences ; spawning ; tagging ; stomach content ; migrations ; electrophoresis ; GBIC
    Repository Name: AquaDocs
    Type: book_section
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  • 4
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    Study of the Texas Shrimp Populations (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14245 | 9596 | 2020-08-21 20:55:52 | 14245 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: This report deals with the growth, seasonal abundance, and movement of brown shrimp, Penaeus aztecus, and white shrimp, Penaeus setiferus, in the coastal bays of Texas in 1965, including Galveston Bay. Young brown shrimp were abundant in the spring. Apparently, unfavorable bay conditions forced the young to enter the Gulf at an unusually small size. The fairly high brown shrimp population level in the estuaries after June 1 was indicative of a long emigration period and a strong year-class. White shrimp samples were small in the summer, but a large group was recruited to the population in the fall. The brown shrimp commercial catch in the spring (from major bays) increased 75% over 1964. White shrimp catches were small in August and September, but increased sharply in late fall. The total 1965 Texas shrimp landings, which nearly equaled the large 1960 catch, were over 48 million pounds, headless. Annual brown shrimp landings increased 31% from 1964, but white shrimp landings decreased 21%.
    Keywords: Ecology ; Fisheries ; penaeid shrimp ; white shrimp ; Penaeus setiferus ; brown shrimp ; Penaeus aztecus ; shrimp fisheries ; abundance ; seasonal variations ; growth ; migrations ; population dynamics ; landing statistics ; GBIC
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Study of the Blue Crab in Texas (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14252 | 9596 | 2020-08-31 20:10:25 | 14252 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: Information on seasonal abundance, growth, movements and environmental relationships was used to study trends in the blue crab (Callinectes sapidus) population of Texas, while a survey of the commercial fishery was made to determine the size of the catch and market conditions.
    Keywords: Ecology ; Fisheries ; blue crab ; Callinectes sapidus ; abundance ; seasonal variations ; growth ; migrations ; crab fisheries ; GBIC
    Repository Name: AquaDocs
    Type: book_section
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  • 6
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    Study of the Southern Quahog (Mercenaria campechiensis Gmelin) in Texas Waters (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14253 | 9596 | 2020-08-23 20:15:42 | 14253 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: Small groups of quahogs (Mercenaria campechiensis Gmelin) from a natural bed in West (Galveston) Bay were held in trays or boxes in Galveston Bay and the Lower Laguna Madre to study growth and mortality.
    Keywords: Ecology ; southern quahog ; Mercenaria campechiensis ; growth ; mortality ; predation ; stone crab ; Menippe mercenaria ; conch ; thais haemostoma ; Dermocystidium marinum ; fungal diseases ; GBIC
    Repository Name: AquaDocs
    Type: book_section
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  • 7
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    Study of the Texas Bay Populations of Juvenile Shrimp, Penaeus aztecus, Penaeus setiferus, and Penaeus duorarum - Study of the Texas Shrimp Population (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14276 | 9596 | 2020-08-31 20:11:37 | 14276 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: Plankton samples from the Aransas Bay area indicated that the post larvae brown shrimp (Penaeus aztecus) immigration peak was reached in March. Sampling in the bays revealed the presence of a large wave of brown shrimp in the spring. In the shallow tertiary bays and along the shore of large bays brown shrimp grew slowly in April and movement to the open water of larger bays was delayed. As the waters warmed growth was rapid and the shrimp began their gulf ward movement on schedule. Samples taken in the inshore Gulf off the Lower Laguna Madre contained large numbers of brown shrimp in May. The samples from the Gulf off Port Aransas indicated that the majority of this species left the Aransas Bay area in June. Shrimp samples from the bays indicated the presence of a large 1964 white shrimp year class. This was confirmed by large commercial catches in the late summer and early fall. Small white shrimp were found in the Gulf in September off the lower coast. In January this species was found in abundance off Port Aransas, but not off Galveston. Brown shrimp commercial landings were somewhat disappointing, however, white shrimp landings were greater than landings reported in 1963.
    Keywords: Fisheries ; GBIC ; penaeid shrimp ; juveniles ; shrimp fisheries ; white shrimp ; brown shrimp ; pink shrimp ; population dynamics ; growth
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 45
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  • 8
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    Study of Texas Shrimp Populations, 1970 (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14273 | 9596 | 2020-08-23 20:51:33 | 14273 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: In spring, samples were taken with bar-seines and trawls from Sabine Lake, Galveston Bay, Matagorda Bay, Aransas Bay, and the Lower Laguna Madre to study brown shrimp (Penaeus aztecus) growth, movements, seasonal abundance trends, and environmental needs. The shrimp was abundant in samples from Galveston Bay, Aransas Bay, and the Lower Laguna Madre. Slow growth of juveniles during April in upper coastal bays was attributed to low temperature. Many, however, were 70 to 80 mm long by late May, because growth accelerated as bays warmed.
    Keywords: Biology ; Fisheries ; GBIC ; penaeid shrimp ; brown shrimp ; Penaeus aztecus ; growth ; migrations ; abundance ; salinity ; shrimp fisheries
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 21
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  • 9
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    Study of the Juvenile Shrimp Populations of the Galveston Bay System - Study of the Texas Shrimp Populations (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14277 | 9596 | 2020-08-31 20:10:59 | 14277 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: Penaeus aztecus, brown shrimp, arrived at the tertiary bays in early April, but grew slowly. In May growth accelerated and emigration from the bay began in June when the shrimp were less than 90 mm long. A second wave of brown shrimp arrived in August. White shrimp, P. setiferus, arrived at the tertiary bays in June. This group of shrimp was followed by two smaller groups in August and October. Brown shrimp were found in Sabine Lake in May. The 1964 white shrimp were found in mid-June. In the fall a second wave of white shrimp was observed. Commercial brown shrimp landings reached a peak in July and August, but fell sharply after September. White shrimp production was high.
    Keywords: Fisheries ; GBIC ; penaeid shrimp ; brown shrimp ; growth ; migrations ; juveniles ; white shrimp ; shrimp fisheries
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 41
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  • 10
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    Survey of Shrimp populations in the Inshore Gulf of Mexico off Texas (2021)
    Texas Parks and Wildlife Department | Austin, TX
    In:  http://aquaticcommons.org/id/eprint/14250 | 9596 | 2020-08-31 20:09:49 | 14250 | Galveston Bay Information Collection
    Details
    Publication Date: 2021-06-24
    Description: In 1965 shrimp and associated bottom organisms were sampled for type, abundance, size groups, and seasonal availability with a 23-25 foot flat otter trawl in the Gulf of Mexico off Port Aransas, Port Mansfield, Port Isabel, and briefly off Galveston, Texas. In regular weekly samples, commercial shrimp of four species, non-commercial shrimp of 7 species, two species of squid, and various associated animals were caught in 100 trawl samples. Brown shrimp, Penaeus aztecus, were the most abundant of the commercial species, followed by white shrimp, Penaeus setiferus, and pink shrimp, Penaeus duorarum. Trachypeneus similis and Squilla empusa were the most abundant non-commercial species. This survey indicates the seasonality of Gulf shrimp populations and the cyclic growth and migration patterns in inshore waters. Periods of abundance are noted for all shrimp. Growth cycle information is given for brown, white, and pink shrimp. Any variation of catch between areas sampled is noted, and data on non-commercial species area included for more comprehensive understanding of the ecology of the inshore Gulf of Mexico.
    Keywords: Ecology ; Fisheries ; penaeid shrimp ; pink shrimp ; white shrimp ; brown shrimp ; biological sampling ; Trachypenaeus similis ; Squilla empusa ; seasonality ; growth ; commercial species ; GBIC
    Repository Name: AquaDocs
    Type: book_section
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