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44 results for “largemouth bass”
REU data set from summer of 2022. Project was designed to understand how crayfish (Faxonius rusticus) respond to chemical cues from largemouth bass predators under different shelter distributions.
Research into predator–prey interactions has focused on the landscape of fear and nonconsumptive effects that result from prey responses. Prey behavior is influenced by predator presence and the location and quality of foraging resources in habitats. These areas have been fruitful, but the role of prey refuges has lagged. We investigated how refuge spatial distribution and quality influence prey behavior. To determine the role of the landscape of safety (LOS) in prey decision-making, we altered spatial relationships between refuges, refuge quality, and predation threats in mesocosms. Mesocosms were constructed such that prey only received predatory chemical cues. We employed a behavioral assay including largemouth bass (Micropterus salmoides (Lacepède, 1802): predator) and virile crayfish (Faxonius rusticus (Girard, 1852): prey). Crayfish shelter use was significantly influenced by quality and spatial relationship of shelters to predatory threats, and the interaction of these two factors. Particularly, crayfish used high-quality shelters more often when located closer to predatory cues than farther away and did not use low-quality shelters more than controls. High-quality shelter usage decreased as threat level (measured by gape ratio) decreased. These results support the idea that prey utilize an LOS, and information contained in these two landscapes may alter behavioral decisions.
Fig. 3 in Co-introduction of ancyrocephalid monogeneans on their invasive host, the largemouth bass, Micropterus salmoides (Lacepedé, 1802) in South Africa
Fig. 3. Onchocleidus principalis (Mizelle, 1936) haptoral hooks (A), membrane on ventral bar (B); male copulatory organ (C); Syncleithrium fusiformis (Mueller, 1934) haptoral hooks (D) male copulatory organ (E). Scale: A, C—E: 50 Mm; B: 10 Mm.
Fig. 2 in Co-introduction of ancyrocephalid monogeneans on their invasive host, the largemouth bass, Micropterus salmoides (Lacepedé, 1802) in South Africa
Fig. 2. Clavunculus bursatus (Mueller, 1936) haptoral hooks (A), male copulatory organ (B); Onchocleidus dispar (Mueller, 1936) haptoral hooks (C); male copulatory organ (D); Onchocleidus furcatus (Mueller, 1937) haptoral hooks (E); male membrane on ventral bar (F), copulatory organ (G), vagina (H). Scale: A—E, G—H: 50 Mm; F: 10 Mm.
Fig. 1 in Co-introduction of ancyrocephalid monogeneans on their invasive host, the largemouth bass, Micropterus salmoides (Lacepedé, 1802) in South Africa
Fig. 1. Map of the sampling localities in the Eastern Cape, Kwazulu-Natal and North West Provinces of South Africa.
FIGURE 2 in Prey selectivity of the invasive largemouth bass towards native and non-native prey: an experimental approach
FIGURE 2 | Relationship between the Manly-Chesson selectivity and prey availability for Micropterus salmoides. Higher values indicate preference for non-native species. Shading represents 95% confidence intervals. Note that because the index fluctuates between 0 and 1, with 2 types of prey and equal availability of prey for both types, the result of the index for one prey is exactly the opposite of the other. For this reason, the graph only shows the results of the index for the non-native species. The graph for the other type of prey would be the spectral image of this one.
FIGURE 1 in Prey selectivity of the invasive largemouth bass towards native and non-native prey: an experimental approach
FIGURE 1 | Relative consumption of non-native (Oreochromis niloticus and Coptodon rendalli) and native (Geophagus iporangensis) prey, considering different prey availability for Micropterus salmoides.
Fig. 4 in Co-introduction of ancyrocephalid monogeneans on their invasive host, the largemouth bass, Micropterus salmoides (Lacepedé, 1802) in South Africa
Fig. 4. Composition and abundance of monogenean species at each sampling locality.
Data from: Comparison of diets for largemouth and smallmouth bass in Eastern Lake Ontario using DNA barcoding and stable isotope analysis
Largemouth (LMB: Micropterus salmoides) and Smallmouth Bass (SMB: Micropterus dolomieu) are important species in the recreational fisheries of the Laurentian Great Lakes. The invasion of the Round Goby (Neogobius melanostomus) into these lakes has changed several facets of black bass biology, but there is still much to learn about the relationship between these species. Previous dietary analyses have shown Round Goby to be important prey for bass, but have been limited by low visual identification rates of dissected stomach items. Within the present study, DNA barcoding and stable isotope analysis improve prey identification and provide a more quantitative dietary analysis of adult black bass in Lake Ontario, comparing the importance of Round Goby as prey between these two species. Eighty-four LMB (406mm fork length ±4mm SEM) and two hundred sixty-four SMB (422mm ±2mm) obtained as tournament mortalities had prey identified using DNA-based methods. Round Goby was the most prevalent prey species for both predators. The diet of LMB was three times more diverse than that of SMB, which almost entirely consists of Round Goby. Our results provide further support that recent increases in the size of Lake Ontario bass are a result of Round Goby consumption, and that the effects of this dietary shift on body condition are greater for SMB. Techniques developed in this study include: reverse-oriented dual priming oligonucleotides used as blocking primers for predator DNA, and an automated design approach of restriction fragment length polymorphism tests for identifying prey DNA barcodes.
Dual function of epaxial musculature for swimming and suction feeding in largemouth bass
<p>The axial musculature of many fishes generates the power for both swimming and suction feeding. In the case of the epaxial musculature, unilateral activation bends the body laterally for swimming, and bilateral activation bends the body dorsally to elevate the neurocranium for suction feeding. But how does a single muscle group effectively power these two distinct behaviors? Prior electromyographic (EMG) studies have identified fishes' ability to activate dorsal and ventral epaxial regions independently, but no studies have directly compared the intensity and spatial activation patterns between swimming and feeding. We measured EMG activity throughout the epaxial musculature during swimming (turning, sprinting, and fast-starts) and suction feeding (goldfish and pellet strikes) in largemouth bass (Micropterus salmoides). We found that swimming involved obligate activation of ventral epaxial regions whereas suction feeding involved obligate activation of dorsal epaxial regions, suggesting regional specialization of the epaxial musculature. However, during fast-starts and suction feeding on live prey, bass routinely activated the whole epaxial musculature, demonstrating the dual function of this musculature in the highest performance behaviors. Activation intensities in suction feeding were substantially lower than fast-starts which, in conjunction with suboptimal shortening velocities, suggests that bass maximize axial muscle performance during locomotion and underutilize it for suction feeding.</p>
Insect-based feed formulations for aquaculture largemouth bass in smart tanks and influence on the health and quality of its meat
<p>The FIT-BASS Project aims to define a black soldier fly-based feed formulation with high<br>nutritional and health value for aquaculture largemouth bass reared in smart tanks.</p>
Chinook salmon digestion data within predatory largemouth bass and channel catfish through controlled feed trials
<p>Diet analysis is a vital tool for understanding trophic interactions and is frequently used to inform conservation and management. Molecular approaches can identify diet items that are impossible to distinguish using more traditional visual-based methods. Yet, our understanding of how different variables, such as predator species or prey ration size, influence molecular diet analysis is still incomplete. Here, we conducted a large feeding trial to assess the impact that ration size, predator species, and temperature had on digestion rates estimated with visual identification, qPCR, and metabarcoding. Our trial was conducted by feeding two rations of Chinook salmon (Oncorhynchus tshawytscha) to two piscivorous fish species (largemouth bass (Micropterus salmoides)) and channel catfish (Ictalurus punctatus)) held at two different temperatures (15.5°C and 18.5°C) and sacrificed at regular intervals up to 120 hours from the time of ingestion to quantify the prey contents remaining in the digestive tract. We found that ration size, temperature, and predator species all influenced digestion rate, with some indication that ration size had the largest influence. DNA based analyses were able to identify salmon smolt prey in predator gut samples for much longer than visual analysis (~12 hours for visual analysis versus ~72 hours for molecular analyses). Our study provides evidence that modeling the persistence of prey DNA in predator guts for molecular diet analyses may be feasible using a small set of controlling variables for many fish systems.</p>
Data from: Field swimming behavior in largemouth bass deviates from predictions based on economy and propulsive efficiency
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Chinook salmon digestion data within predatory largemouth bass and channel catfish through controlled feed trials
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Data from: Comparison of diets for largemouth and smallmouth bass in Eastern Lake Ontario using DNA barcoding and stable isotope analysis
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Dual function of epaxial musculature for swimming and suction feeding in largemouth bass
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Supplementary material 1 from: Faria L, Vitule JRS, Olden JD (2023) Predation risk by largemouth bass modulates feeding functional responses of native and non-native crayfish. NeoBiota 87: 191-212. https://doi.org/10.3897/neobiota.87.108457
Data from functional response trials
Data from: Fitness consequences of boldness in juvenile and adult largemouth bass
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Endocrine, immune and renal toxicity in Largemouth bass after chronic exposure to glyphosate and Rodeo
GEO Series GSE197375. Micropterus salmoides. 24 samples. Type: Expression profiling by high throughput sequencing.
The genomic effects of dieldrin in the hypothalamus of largemouth bass
GEO Series GSE16402. Micropterus salmoides. 8 samples. Type: Expression profiling by array.
Largemouth Bass E2 exposure
GEO Series GSE10693. Micropterus salmoides. 16 samples. Type: Expression profiling by array.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
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