Optimum Effort and Rent Distribution in the Gulf of Mexico Shrimp Fishery: Comment

1982 ◽  
Vol 64 (1) ◽  
pp. 157-159
Author(s):  
Lee G. Anderson
Keyword(s):  
Gulf Of Mexico ◽  
Shrimp Fishery

scholarly journals Diet of the Blacktip Shark (Carcharhinus limbatus) in the Northwestern Gulf of Mexico

2020 ◽  
Vol 31 ◽  
pp. SC25-SC30
Author(s):  
Sarah R. Alewijnse ◽  
R. J. David Wells
Keyword(s):  
Gulf Of Mexico ◽  
Stomach Contents ◽  
Minor Component ◽  
Weight Percent ◽  
Micropogonias Undulatus ◽  
Blacktip Shark ◽  
Carcharhinus Limbatus ◽  
Shrimp Fishery ◽  
New Finding ◽  
A Minor

The stomach contents of 90 Blacktip Shark (Carcharhinus limbatus) specimens caught in the northwestern Gulf of Mexico (GOM) were examined. Stomach contents were identified to the lowest possible taxon, and quantified using percent weight, percent number, percent frequency of occurrence, and percent index of relative importance (IRI). Teleosts were the dominant prey group (98.95% IRI), although most were unidentified (61.70% IRI). Of identified teleost species, Atlantic Croaker (Micropogonias undulatus) (28.43% IRI), and Gulf Menhaden (Brevoortia patronus) (2.31% IRI) were the most important. Crustaceans (0.65% IRI), mollusks (0.46% IRI), and elasmobranchs (0.03% IRI) formed a minor component of the diet. Suspected shrimp fishery discards were found in 11% of stomachs, highlighting the potential importance of this food source for the Blacktip Shark. Diet composition did not differ between male and female sharks, but did between juveniles and adults. Juvenile shark diets had greater proportions of unidentified teleost, Clupeidae and Penaeidae, while adult diets had greater proportions of Sciaenidae, Ariidae and cephalopods. Our results were similar, although not identical to, other studies of Blacktip Shark diets in the northwestern GOM. Of note is finding of the mantis shrimp Squilla empusa, a species previously unreported in Blacktip Shark stomach contents. This new finding, the high importance of unidentified teleosts, and the lack of asymptote in the prey accumulation curve emphasize the need for further study of the Blacktip Shark diet in the northwestern GOM.

Description of a Simple Electronic Logbook Designed to Measure Effort in the Gulf of Mexico Shrimp Fishery

2003 ◽  
Vol 23 (2) ◽  
pp. 581-589 ◽  
Author(s):  
Benny J. Gallaway ◽  
John G. Cole ◽  
Larry R. Martin ◽  
James M. Nance ◽  
Michael Longnecker
Keyword(s):  
Gulf Of Mexico ◽  
Shrimp Fishery ◽  
Electronic Logbook

The Development of Bycatch Reduction Technology in the Southeastern United States Shrimp Fishery

1999 ◽  
Vol 33 (2) ◽  
pp. 51-56 ◽  
Author(s):  
John Watson ◽  
Daniel Foster ◽  
Scoll Nichols ◽  
Arvlnd Shah ◽  
Elizabeth Scoll-oenlon ◽  
...  
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
Southeastern United States ◽  
Red Snapper ◽  
Shrimp Fishery ◽  
Spanish Mackerel ◽  
Bycatch Reduction ◽  
Shrimp Trawl ◽  
Shrimp Fisheries ◽  
Southeastern Atlantic

Shrimp trawl bycatch is a significant source of fishery induced mortality for managed species including red snapper (Lutjanus campechanus Poey), Spanish mackerel (Scomberomorus maculatus MitcheU), and weakfish (Cynoscion regalis Baloch, Schneider) in the southeastern United States. These species have been overfished and are under both state and federal management plans which include regulations mandating reduction of shrimp trawl bycatch mortality. In 1990 the U.S. Congress passed amendments to the Magnuson Fishery Conservation and Management Act (16 U.S.C. 1854) which called for a research program that included the design and evaluation of approaches for reducing shrimp trawl bycatch mortality. A strategic planning initiative addressing finfish bycatch in the Gulf of Mexico and southeastern Atlantic shrimp fisheries was developed by the Gulf and South Atlantic Fisheries Foundation through funding and guidance provided by the National Marine Fisheries Service. A cooperative research plan was developed in 1992 which included the identification, development, and evaluation of gear options for reducing bycatch in the Gulf of Mexico and southeastern Atlantic shrimp fisheries. Between 1990 and 1996 one hundred and forty five bycatch reduction conceptual gear designs contributed by fishers, net shops, gear technicians, and biologists were evaluated. Sixteen of these designs were tested on cooperative commercial shrimp vessels by observers under the southeast regional cooperative bycatch program. Analyses of data from commercial vessel testing indicates that two bycatch reduction designs have potential to significantly reduce shrimp trawl bycatch for weakfish and Spanish mackerel in the southeastern Atlantic and two designs have the potential to significantly reduce red snapper bycatch in the Gulf of Mexico. The fisheye and the extended funnel bycatch reduction devices have been mandated for use in the southeastern Atlantic shrimp fishery and the fisheye and Jones/Davis bycatch reduction devices have been mandated for use in the Gulf of Mexico shrimp trawl fishery.

Physical and Chemical Characterization of In-Situ Burn Residue Encountered by a Deep-Water Fishery in the Gulf of Mexico

2017 ◽  
Vol 2017 (1) ◽  
pp. 1020-1040
Author(s):  
Gary Shigenaka ◽  
Buffy Meyer ◽  
Edward Overton ◽  
M. Scott Miles
Keyword(s):  
Gulf Of Mexico ◽  
Deep Water ◽  
Chemical Characterization ◽  
Deepwater Horizon ◽  
Residual Oil ◽  
Shrimp Fishery ◽  
Physical And Chemical Characterization ◽  
Physical And Chemical

2017-185 ABSTRACT The response technique of in-situ burning was used to great effect during the 2010 Deepwater Horizon oil spill in the Gulf of Mexico. An estimated 220,000-310,000 bbl of surface oil was consumed by operational in-situ burn activities. Post-burn residues were not recovered, as most were denser than seawater and sank after the burns. However, late in 2010, a relatively small deep-water shrimp fishery operating on the shelf north of the Macondo wellhead encountered tarballs on or near the bottom at around 200 m. We physically and chemically characterized samples of these submerged tarballs to confirm them as originating from Deepwater Horizon burns and to understand the features that distinguish them from other residual oil types encountered during the course of the spill response. The chance intersection between a commercial fishery and residues from the in-situ burn operations suggest that the fate of in-situ burn residue should be factored into future spill response tradeoff analyses.

Dynamic Modeling of the Eastern Gulf of Mexico Shrimp Fishery

1982 ◽  
Vol 64 (3) ◽  
pp. 475-482 ◽  
Author(s):  
Vito J. Blomo ◽  
John P. Nichols ◽  
Wade L. Griffin ◽  
William E. Grant
Keyword(s):  
Gulf Of Mexico ◽  
Dynamic Modeling ◽  
Shrimp Fishery ◽  
Eastern Gulf Of Mexico

Spatial analyses of bottlenose dolphin–fisheries interactions reveal human avoidance off a productive lagoon in the western Gulf of Mexico

2011 ◽  
Vol 92 (8) ◽  
pp. 1893-1900 ◽  
Author(s):  
Eduardo Morteo ◽  
Axayácatl Rocha-Olivares ◽  
Patricia Arceo-Briseño ◽  
Luis G. Abarca-Arenas
Keyword(s):  
Gulf Of Mexico ◽  
Negative Reinforcement ◽  
Potential Interaction ◽  
Line Transect ◽  
Fishing Gear ◽  
Small Areas ◽  
Shrimp Fishery ◽  
Fisheries Interactions ◽  
The Impact ◽  
Marine Wildlife

Studying interactions between cetaceans and humans is fundamental to assess their ecological significance and the impact of human activities on marine wildlife. Delphinids have historically been associated with human maritime activities, and while evidence suggests that such interactions are becoming more frequent worldwide, these remain poorly studied. Areas of potential interaction and differences in dolphin affinity to interact with humans were used to test hypotheses about the spatial distribution and temporal variation in dolphin–fisheries interactions off the highly productive Alvarado lagoon, in the western Gulf of Mexico. Line-transect surveys yielded 928 dolphin, 980 vessel, and 320 fishing gear target records, the latter involving mostly the shrimp fishery. No temporal differences were found in daily relative abundance of dolphins ( = 8.1 h−1, SD = 9.7), vessels ( = 7.8 h−1, SD = 5.9) or fishing gear ( = 2.4 h−1, SD = 2.6) between two consecutive years. Non-random spatial distributions indicated higher target concentrations at the lagoon entrance; however, dolphins and fishers were found to evade each other, possibly to prevent competition; dolphins only interacted with gillnets (28.6% of vessels and 22.6% of fishing gear). We observed small areas of potentially intentional and random encounters outside the entrance of the lagoon and low or null potential for interactions elsewhere. Only 18.9% of dolphin schools (44.8% of the 172 photo-identified animals) interacted with fisheries mostly by chance. Resident individuals (N = 23) tended to avoid humans, likely in response to negative reinforcement caused by aggressions from fishers. Hence, the potential intentionality of a few individuals to interact with fisheries, show they bare higher risks while attempting to benefit from gillnetted prey. This research unveils the chronic and acute exposure of the dolphin community to artisanal fisheries within the area, having important reciprocal consequences on their distributions and activities.

Optimum Effort and Rent Distribution in the Gulf of Mexico Shrimp Fishery

1976 ◽  
Vol 58 (4_Part_1) ◽  
pp. 644-652 ◽  
Author(s):  
Wade L. Griffin ◽  
Ronald D. Lacewell ◽  
John P. Nichols
Keyword(s):  
Gulf Of Mexico ◽  
Shrimp Fishery
Sign in / Sign up

Export Citation Format

Share Document