scholarly journals Interspecific Interactions May Influence Reef Fish Management Strategies in the Gulf of Mexico

2018 ◽  
Vol 10 (1) ◽  
pp. 24-39 ◽  
Author(s):  
M. D. Masi ◽  
C. H. Ainsworth ◽  
I. C. Kaplan ◽  
M. J. Schirripa
Keyword(s):  
Gulf Of Mexico ◽  
Reef Fish ◽  
Interspecific Interactions ◽  
Management Strategies ◽  
Fish Management

Lessons learned from data-limited evaluations of data-rich reef fish species in the Gulf of Mexico: implications for providing fisheries management advice for data-poor stocks

2019 ◽  
Vol 76 (9) ◽  
pp. 1624-1639 ◽  
Author(s):  
Skyler R. Sagarese ◽  
William J. Harford ◽  
John F. Walter ◽  
Meaghan D. Bryan ◽  
J. Jeffery Isely ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Reef Fish ◽  
Fish Species ◽  
Stock Assessment ◽  
Lessons Learned ◽  
Management Objectives ◽  
Trade Offs ◽  
Data Limitations ◽  
Management Procedures ◽  
Reef Fish Species

Specifying annual catch limits for artisanal fisheries, low economic value stocks, or bycatch species is problematic due to data limitations. Many empirical management procedures (MPs) have been developed that provide catch advice based on achieving a stable catch or a historical target (i.e., instead of maximum sustainable yield). However, a thorough comparison of derived yield streams between empirical MPs and stock assessment models has not been explored. We first evaluate trade-offs in conservation and yield metrics for data-limited approaches through management strategy evaluation (MSE) of seven data-rich reef fish species in the Gulf of Mexico. We then apply data-limited approaches for each species and compare how catch advice differs from current age-based assessment models. MSEs identified empirical MPs (e.g., using relative abundance) as a compromise between data requirements and the ability to consistently achieve management objectives (e.g., prevent overfishing). Catch advice differed greatly among data-limited approaches and current assessments, likely due to data inputs and assumptions. Adaptive MPs become clearly viable options that can achieve management objectives while incorporating auxiliary data beyond catch-only approaches.

scholarly journals Prehistoric baseline reveals substantial decline of oyster reef condition in a Gulf of Mexico conservation priority area

2020 ◽  
Vol 16 (2) ◽  
pp. 20190865 ◽  
Author(s):  
Stephen G. Hesterberg ◽  
Gregory S. Herbert ◽  
Thomas J. Pluckhahn ◽  
Ryan M. Harke ◽  
Nasser M. Al-Qattan ◽  
...  
Keyword(s):  
Life History ◽  
Stable Isotope ◽  
Gulf Of Mexico ◽  
Oyster Reef ◽  
Management Strategies ◽  
Conservation Priority ◽  
Habitat Condition ◽  
Substantial Decline ◽  
Reef Condition ◽  
Population Resilience

The Gulf of Mexico (GoM) is home to the world's largest remaining wild oyster fisheries, but baseline surveys needed to assess habitat condition are recent and may represent an already-shifted reference state. Here, we use prehistoric oysters from archaeological middens to show that oyster size, an indicator of habitat function and population resilience, declined prior to the earliest assessments of reef condition in an area of the GoM previously considered pristine. Stable isotope sclerochronlogy reveals extirpation of colossal oysters occurred through truncated life history and slowed growth. More broadly, our study suggests that management strategies affected by shifting baselines may overestimate resilience and perpetuate practices that risk irreversible decline.

scholarly journals Modelling community structure and species co-occurrence using fishery observer data

2016 ◽  
Vol 73 (7) ◽  
pp. 1750-1763 ◽  
Author(s):  
Jeffrey Robert Pulver ◽  
Hui Liu ◽  
Elizabeth Scott-Denton
Keyword(s):  
Cluster Analysis ◽  
Community Structure ◽  
Gulf Of Mexico ◽  
Reef Fish ◽  
Efficient Method ◽  
Probabilistic Models ◽  
Distinct Species ◽  
Common Species ◽  
Species Relationships ◽  
Correlation Measure

Abstract In this study, we modelled fishery observer data to compare methods of identifying community structure using cluster analyses to determine stratifications and probabilistic models for examining species co-occurrence in the Gulf of Mexico deepwater reef fish fishery. Comparing cluster analysis methods, the correlation measure of dissimilarity in combination with average agglomerative linkage was the most efficient method for determining species relationships using simulated random species as a comparison tool. Cluster analysis revealed distinct species stratifications and in combination with multiscale bootstrapping generated probabilities indicating the strength of stratifications in the fishery. A more parsimonious approach with probabilistic models was also developed to quantify pairwise species co-occurrence as random, positive, or negative based on the observed vs. expected fishing sets with co-occurrence. For the most common species captured, the probabilistic models predicted positive or negative co-occurrence between 84.2% of the pairwise combinations examined. These methods provide fishery managers tools for determining multispecies quota allocations and offer insights into other bycatch species of interest.

scholarly journals Experimental Assessment of Circle Hook Performance and Selectivity in the Northern Gulf of Mexico Recreational Reef Fish Fishery

2014 ◽  
Vol 6 (1) ◽  
pp. 235-246 ◽  
Author(s):  
Steven B. Garner ◽  
William F. Patterson ◽  
Clay E. Porch ◽  
Joseph H. Tarnecki
Keyword(s):  
Gulf Of Mexico ◽  
Reef Fish ◽  
Experimental Assessment ◽  
Northern Gulf Of Mexico

scholarly journals DNA Barcoding of Fish in Mischief Reef—Fish Diversity of a Reef Fish Community From Nansha Islands

2021 ◽  
Vol 7 ◽  
Author(s):  
Binbin Shan ◽  
Yan Liu ◽  
Changping Yang ◽  
Yu Zhao ◽  
Gongjun Zhang ◽  
...  
Keyword(s):  
Reef Fish ◽  
Management Strategies ◽  
Genetic Distances ◽  
Coi Gene ◽  
Fish Diversity ◽  
Nansha Islands ◽  
Mitochondrial Coi ◽  
Mitochondrial Coi Gene ◽  
First Time ◽  
Effective Conservation

Development of effective conservation and management strategies requires assessments of ecosystem biodiversity status, especially in understudied hotspots of global fish diversity. Coral reefs are important habitats for fishes, with biodiversity hotspots known globally. We present the first data on molecular diversity of fishes of Mischief Reef, the largest atoll in the Nansha Islands. Partial sequences (650 bp) of mitochondrial COI gene (Cytochrome c oxidase subunit I) are used to identify 209 individuals, representing 101 species, referable to 62 genera, 27 families, 8 orders, and 1 class. The most abundant orders are the Perciformes (176 specimens, 84.21%), Tetraodontiformes (13 specimens, 6.22%), and Beryciformes (13 specimens, 6.22%). Mean Kimura 2-Parameter genetic distances within genera, families, and orders are 4.51, 13.90, and 17.63%, respectively. We record Monotaxis heterodon from this region for the first time—a species that may previously have been misidentified as M. grandoculis. In addition, we recognized possible cryptic species of Lethrinus olivaceus based on significantly diverging barcode sequences. Barcode data provide new insights into fish diversity of Mischief Reef, important for developing further researches on this fauna, and for its conservation.

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