Black Drum Movement in Texas Bays

Osburn, H.R.; Matlock, Gary C.

doi:10.1577/1548-8659(1984)4<523:bdmitb>2.0.co;2

Cited by 14 publications

(26 citation statements)

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“…very likely trapped phytoplankton (Fry & Sherr, 1984;Lebreton et al, 2016) and benthic microalgae (Lebreton et al, 2016), with possible influence of detritus from C 3 and C 4 plants (Fry & Sherr, 1984). The and benthic macrofauna confirm that the food resources ingested by P. cromis predominantly originate from the Baffin Bay estuary, in accordance with previous observations of limited mobility of P. cromis outside of the estuary Osburn & Matlock, 1984).…”

Section: Food Resources Of P Cromissupporting

confidence: 87%

“…The similar isotope compositions of P. cromis gut liquids and benthic macrofauna confirm that the food resources ingested by P. cromis predominantly originate from the Baffin Bay estuary, in accordance with previous observations of limited mobility of P. cromis outside of the estuary (Ajemian et al . , ; Osburn & Matlock, ). The large range of gut‐liquid δ 13 C values, overlapping the range of benthic macrofauna δ 13 C values, highlights that this fish species can ingest a large range of prey items.…”

Section: Discussionmentioning

confidence: 99%

“…Within this system, the large‐bodied sciaenid black drum, Pogonias cromis (L. 1766), supports an important recreational and commercial fishery (Olsen, ; Osburn & Matlock, ; Ross et al ., ). Pogonias cromis movement between Gulf of Mexico estuaries is minimal, indicating populations are largely isolated from one another (Ajemian et al ., ; Osburn & Matlock, ) and probably rely on locally produced food resources. Juvenile and adult P. cromis exploit a variety of benthic food resources and can use their strong pharyngeal teeth to crush the shells of molluscs and crustaceans (Dugas, ; Simmons & Breuer, ).…”

Section: Introductionmentioning

confidence: 99%

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Dietary composition of black drum Pogonias cromis in a hypersaline estuary reflects water quality and prey availability

Rubio

Ajemian

Stunz

et al. 2018

Journal of Fish Biology

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The Baffin Bay estuary is a hypersaline system in the Gulf of Mexico that supports an important recreational and commercial fishery for black drum Pogonias cromis, a benthic predator. Seasonal measurements of water quality variables, benthic macrofauna densities and biomass, and determination of P. cromis food sources using stomach-content and stable-isotope analyses were carried out to determine how P. cromis food sources change with water quality and how this may affect P. cromis diet. Gut-content analysis indicated P. cromis selectively consumed bivalves Mulinia lateralis and Anomalocardia auberiana. Isotope compositions demonstrated that P. cromis relied on these benthic food resources produced in the Baffin Bay estuary year-round. Biomass and densities of these bivalves were influenced by changes in water quality variables, particularly salinity and dissolved oxygen. Thus, this paper demonstrates the relationship between water quality variables, benthic macrofauna, and their use as food resources by a carnivorous fish species, and emphasizes the need for integrated assessments when studying the effects of water quality on ecosystem function. Holistic approaches such as these can provide important information for management and conservation of fishery resources and can improve predictions of ecosystem response to climate variability.

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Section: Food Resources Of P Cromissupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dietary composition of black drum Pogonias cromis in a hypersaline estuary reflects water quality and prey availability

Rubio

Ajemian

Stunz

et al. 2018

Journal of Fish Biology

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“…The reduced feeding rates of fish on oysters at both sites during the fall and the difference between the control sites in the spring are still largely unexplained. Black drum migrate extensively within estuarine bays and often feed in schools (Osburn and Matlock 1984) and so spatial and temporal variation in predation pressure is not totally unexpected. Without a doubt, we need to know more about black drum movement patterns and feeding behavior, and their sensitivity to physico-chemical and life history factors, before we fully understand their effects on oyster leases.…”

Section: Discussionmentioning

confidence: 99%

Oyster Predation by Black Drum Varies Spatially and Seasonally

Brown

George

Peterson

et al. 2008

Estuaries and Coasts

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Oyster reefs (Crassostrea virginica) supply important ecosystem services to estuarine habitats in the northern Gulf of Mexico, but little is known of the role of fish predators in controlling their structure or areal cover on soft sediments. At two sites and during fall and spring, we employed gill nets and trot lines to remove black drum (Pogonias cromis) from experimental reefs, and assessed oyster survival in comparison to control reefs. Numbers and biomass of black drum removed from reefs varied seasonally, among sites, and among removal methods. In the fall, black drum were rare at one site and abundant at the other, but did not significantly lower oyster survival on control reefs at either site. In the spring, black drum were common at both sites, and significantly lowered oyster survival on control reefs. Oysters and epizoic hooked mussels comprised roughly a third of the fishes' diet, and oyster mortality was closely related to the percentage of drum feeding on oysters. There was little evidence of mortality from other predators of seed oysters like stone crabs or Southern oyster drills, and a repeated measures analysis of variance indicated black drum biomass was significantly depressed on experimental reefs during the experiments. Black drum thus appear to be potentially important predators on oyster reefs, but more work needs to be done on what factors explain the temporal and spatial variation in their abundance and oyster consumption.

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“…No mass migration of fish in winter or during spring spawning periods has been found for black drum in any Texas Bay (Osburn & Matlock 1984). Tagged fish are generally recaptured within the same bay that they are released in.…”

Section: Stable Carbon Isotopesmentioning

confidence: 99%

Incorporation of brown tide into an estuarine food web

Gt¹,

Montagna²,

Pl³

1997

Mar. Ecol. Prog. Ser.

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ABSTRACT-In Laguna Madre, Texas, USA, a monospecific brown tide bloom began in January 1990 and was still persisting at the time of this writing Immediately following the start of the bloom, abundance, biomass and diversity of benthos declined, and have remained low for 6 yr. O n e explanation for the decline is that the brown tide organism is a poor food source. To determine whether the brown tide was incorporated into the estuarine food web, benthic invertebrates and fish were studied 14 mo after the bloom onset using stable carbon isotope ratios. Fish and benthos were collected from 2 areas, a seagrass habitat in Laguna Madre, and a muddy bottom habitat in the adjacent Alazan Bay. The muddy bottom fauna had a strong brown tide signature, indicating the incorporation of brown tide or brown tide detritus into the food web. The higher-biomass seagrass-fauna had heavier isotope values, reflecting incorporat~on of seagrass carbon in addition to brown tide. The top predators, Sciaenops ocellatus and Pogonjas cromis, have different niches, but were able to switch food sources and thrive during the brown tide bloom. Brown tide appears to b e able to support a n estuarine food web, but at the expense of benthic diversity. The loss of benthic diversity could be due to allelopathy or the inability of some species to assimilate brown tide Habitats with extensive seagrass beds maintain higher productivity and divers~ty than muddy habitats. However, seagrass habitats are endangered because brown tide reduces light levels, inhibits seagrass growth, and is causing seagrass decline.

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Black Drum Movement in Texas Bays

Cited by 14 publications

References 0 publications

Dietary composition of black drum Pogonias cromis in a hypersaline estuary reflects water quality and prey availability

Dietary composition of black drum Pogonias cromis in a hypersaline estuary reflects water quality and prey availability

Oyster Predation by Black Drum Varies Spatially and Seasonally

Incorporation of brown tide into an estuarine food web

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