Behavior of gray triggerfish Balistes capriscus around baited fish traps determined from fine-scale acoustic tracking

2018 ◽  
Vol 606 ◽  
pp. 133-150 ◽  
Author(s):  
NM Bacheler ◽  
KW Shertzer ◽  
JA Buckel ◽  
PJ Rudershausen ◽  
BJ Runde
Keyword(s):  
Fine Scale ◽  
Acoustic Tracking ◽  
Balistes Capriscus ◽  
Fish Traps ◽  
Gray Triggerfish

Applying double-difference methods for fine-scale acoustic tracking of controlled sources and sperm whales using a small aperture vertical array

2016 ◽  
Vol 139 (4) ◽  
pp. 2172-2172
Author(s):  
Ludovic Tenorio-Hallé ◽  
Aaron M. Thode ◽  
Jit Sarkar ◽  
Chris Verlinden ◽  
Jeffrey D. Tippmann ◽  
...  
Keyword(s):  
Double Difference ◽  
Fine Scale ◽  
Sperm Whales ◽  
Vertical Array ◽  
Acoustic Tracking ◽  
Small Aperture ◽  
Difference Methods

Age and growth of gray triggerfish (Balistes capriscus) from a north-central Gulf of Mexico artificial reef zone

2019 ◽  
Vol 95 (2) ◽  
pp. 177-195
Author(s):  
Amanda E Jefferson ◽  
Robert J Allman ◽  
Ashley E Pacicco ◽  
James S Franks ◽  
Frank J Hernandez ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Artificial Reef ◽  
Age And Growth ◽  
North Central ◽  
Balistes Capriscus ◽  
Gray Triggerfish ◽  
Reef Zone

scholarly journals Effects of Vacuum and Modified Atmosphere Packaging on the Quality and Shelf-Life of Gray Triggerfish (Balistes capriscus) Fillets

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 250
Author(s):  
Eduardo Esteves ◽  
Luís Guerra ◽  
Jaime Aníbal
Keyword(s):  
Shelf Life ◽  
Modified Atmosphere Packaging ◽  
Viable Count ◽  
Modified Atmosphere ◽  
Total Viable Count ◽  
Total Volatile ◽  
Total Volatile Basic Nitrogen ◽  
Basic Nitrogen ◽  
Balistes Capriscus ◽  
Gray Triggerfish

Seafood products are perceived as healthy foods. However, several species of seafood are still not fully utilized for different reasons or can be valued outside the original locale, if issues with the short shelf-life and/or the preparation/presentation form are overcome, e.g., gray triggerfish, Balistes capriscus. Consumed mostly fresh, its flesh is of excellent quality. We studied the effect of different types of packaging (in air (AIR), vacuum (VP), and modified atmosphere (MAP)) on physicochemical (color and texture, pH, and total volatile basic nitrogen), microbiological (total viable count, psychrotrophic, sulphide-reducing bacteria, and acid-lactic bacteria), and sensory qualities, and shelf-life of gray triggerfish fillets stored at refrigeration temperature for 15 days. The samples were analyzed on days 0 (fresh fish), 5, 10 (8 and 12 for sensory analysis), and 15 after filleting and packaging. During the trial, fillets became lighter (increased L*) and yellower (b* >> 0) with time of storage. Distinct patterns were observed for pH among treatments. Unexpectedly, the increasing trend observed in the texturometer-derived hardness of VP and MAP fillets, contrasted with the sensory assessment, wherein panelists perceived a clear softening of fillets. VP delayed and MAP inhibited the increase in TVB-N contents of fillets compared to fillets packed in AIR. Total viable count and psychrothropic bacteria of fillets in AIR exceeded the conventional limit of 7 log(CFU/g) on day 10, while in fillets packed in VP and MAP, their abundance remained below that limit during the trial. The organoleptic attributes of fillets perceived by a sensory panel changed significantly in all treatments during the storage trial. Willingness to consume the fillets decreased constantly in AIR and MAP, but not in VP fillets. Considering primarily sensory, but also biochemical and microbiological parameters, namely panelists’ rejection, total volatile basic nitrogen content, and total viable count and psychrotrophic bacteria abundance, the shelf-life of fillets packed in air was eight days. Vacuum and modified atmosphere packaging extended the shelf-life to 15 and 12 days, and thus can add value to this product. Future research regarding the VP and MAP of gray triggerfish fillets could involve the optimization of mixtures of gases use and/or the application of combined processes.

Marine Artificial Reef Research and Development: Integrating Fisheries Management Objectives

2018 ◽  
Keyword(s):  
Sex Ratio ◽  
Gulf Of Mexico ◽  
Artificial Reef ◽  
Fork Length ◽  
South Texas ◽  
Spawning Season ◽  
Artificial Reefs ◽  
Batch Fecundity ◽  
Balistes Capriscus ◽  
Gray Triggerfish

<em>Abstract</em>.—Artificial reefs in the northwest Gulf of Mexico act as preferential habitat for Gray Triggerfish <em>Balistes capriscus </em>(Gmelin, 1789) and are heavily targeted by local and international fishing efforts. Three artificial reefs off the south Texas coast were studied to investigate the reproductive characteristics of this ubiquitous reef member whose importance to both commercial and recreational fishing has resulted in a dramatic reduction in Gulf of Mexico-wide estimated biomass for the past 20 years. Characteristics examined included sex ratio, peak spawning season, batch fecundity of females (1 × 10<sup>6</sup> oocytes), fork length (FL, mm) at maturity, and batch fecundity as a function of FL or weight (i.e., Δ1 × 10<sup>6</sup> oocytes = ΔFL). These characteristics were investigated to build a foundational understanding of an understudied region of the Gulf and a relatively new artificial reef habitat. Reef sites managed by the Texas Parks and Wildlife Department Artificial Reef Program were sampled for 1 year, yielding 112 individuals. The sex ratio was 1:1 males to females but varied among sample sites, suggesting that an unidentified factor may have influenced aggregations of males and females. Spawning season was similar in other regions of the Gulf of Mexico (i.e., between June and August with a peak in July). Female batch fecundity was 7.36 × 10<sup>5</sup> ± 2.69 × 10<sup>5</sup> mature oocytes, and the batch fecundity to FL relationship was 14.353 × FL<sup>1.88</sup>, similar to other populations of Gray Triggerfish in the Gulf of Mexico.

scholarly journals Fish assemblages associated with artificial reefs assessed using multiple gear types in the northwest Gulf of Mexico

2020 ◽  
Vol 96 (4) ◽  
pp. 655-678
Author(s):  
Jeffrey D Plumlee ◽  
Kaylan M Dance ◽  
Michael A Dance ◽  
Jay R Rooker ◽  
Thomas C TinHan ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Fish Assemblages ◽  
Abundant Species ◽  
Red Snapper ◽  
Artificial Reefs ◽  
Adaptive Resolution ◽  
Fish Traps ◽  
Resolution Imaging ◽  
Imaging Sonar ◽  
Gray Triggerfish

Quantitative surveys of fishes associated with artificial reefs in the northwest Gulf of Mexico were conducted over a 4-yr period (2014–2017). Artificial reefs surveyed were comprised of three types: concrete structures, rig jackets, and decommissioned ships. All reefs were surveyed using vertical long line (VLL), fish traps, and Adaptive Resolution Imaging Sonar (ARIS 1800). Mean fish abundance did not significantly differ using VLL [1.7 ind set –1 (SD 2.2)] among the three reef types. However, relative abundance among all fishes collected was significantly highest on rig reefs using traps [6.2 ind soak–1 (SD 3.8)], while results from sonar surveys indicated that the mean relative fish density was highest on concrete reefs [15.3 fish frame–1 (SD 26.8)]. Red snapper (n = 792), followed by gray triggerfish (n = 130), pigfish (n = 70), tomtate (n = 69), and hardhead catfish (n = 57) were the most numerically abundant species using VLL and traps; red snapper comprised 90.7% of total catch using VLL and 43.9% using traps. Mean Brillouin's diversity (HB) was highest on ships using VLL [0.41 (SD 0.14)] and highest on rigs using traps [0.87 (SD 0.58)] compared to the lowest diversity found on concrete [VLL 0.07 (SD 0.11); traps 0.36 (SD 0.32)]. Findings from this study can be used to inform the planning of future artificial reefs and their effect on the assemblages of reef-associated fishes. Additionally, these results highlight the value of using multiple gear types to survey reef fish assemblages associated with artificial reefs.

Competitive interactions between gray triggerfish (Balistes capriscus) and red snapper (Lutjanus campechanus) in laboratory and field studies in the northern Gulf of Mexico

2018 ◽  
Vol 75 (8) ◽  
pp. 1313-1318 ◽  
Author(s):  
Carrie M. Simmons ◽  
Stephen T. Szedlmayer
Keyword(s):  
Field Studies ◽  
Red Snapper ◽  
Competitive Interactions ◽  
Lutjanus Campechanus ◽  
Negative Effects ◽  
Lower Growth ◽  
Bite Marks ◽  
Balistes Capriscus ◽  
The Mean ◽  
Gray Triggerfish

Field removal and laboratory studies examined competitive interactions between gray triggerfish (Balistes capriscus) and red snapper (Lutjanus campechanus). In field studies, all gray triggerfish and red snapper were counted and sizes estimated on 24 reef sites. Gray triggerfish were then removed from half of these reef sites, resulting in significantly fewer gray triggerfish on the removal reefs at the start of the experiment. After 7 months the experiment ended and reef sites were resurveyed. Gray triggerfish decreased on both treatments, while the mean number of red snapper did not differ between treatments; however, there were significantly more small (<400 mm total length) red snapper on reefs where gray triggerfish were removed. In seven laboratory growth trials (30 to 35 days each), red snapper held with gray triggerfish had significantly lower growth rates and numerous bite marks compared with red snapper alone. These competitive interactions indicate that management efforts to rebuild and increase gray triggerfish populations may have unintentional negative effects on red snapper populations, particularly for smaller fish.

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