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603 results for “fisheries”
FIG. 12. — Paralygdamia fisheri n in Révision du genre endémique malgache Paralygdamia Saussure & Zehntner, 1895 (Dictyoptera, Mantodea, Tarachodidae)
FIG. 12. — Paralygdamia fisheri n. sp., holotype, genitalia en vue ventrale (préparation Roy 4525). Échelle: 1 mm.
Fig. 7 in Biology of Isopisthus parvipinnis: an abundant sciaenid species captured bycatch during sea-bob shrimp fishery in Brazil
Fig. 7. Length/weight relationships of the species Isopisthus parvipinnis (n = 990) in Ilhéus, Bahia.
Fig. 6 in Biology of Isopisthus parvipinnis: an abundant sciaenid species captured bycatch during sea-bob shrimp fishery in Brazil
Fig. 6. Estimated length of first maturation (L ) of Isopisthus parvipinnis (n = 990) in Ilhéus, Bahia, Brazil.
Fig. 5 in Biology of Isopisthus parvipinnis: an abundant sciaenid species captured bycatch during sea-bob shrimp fishery in Brazil
Fig. 5. Average length of Isopisthus parvipinnis and confidence interval of 95% (n = 990) across seasons of those individuals captured along the coast of Ilhéus, Bahia, Brazil.
Fig. 4 in Biology of Isopisthus parvipinnis: an abundant sciaenid species captured bycatch during sea-bob shrimp fishery in Brazil
Fig. 4. Number of Isopisthus parvipinnis individuals (n = 990) per length category across those captured along the coast of Ilhéus, Bahia, Brazil.
Fig. 2 in Biology of Isopisthus parvipinnis: an abundant sciaenid species captured bycatch during sea-bob shrimp fishery in Brazil
Fig. 2. Adjusted average of number of Isopisthus parvipinnis individuals captured over the seasons on coast of Ilhéus, Bahia, Brazil.
Fig. 3 in Biology of Isopisthus parvipinnis: an abundant sciaenid species captured bycatch during sea-bob shrimp fishery in Brazil
Fig. 3. Total number of Isopisthus parvipinnis individuals captured per sampling month along the coast of Ilhéus, Bahia, Brazil.
Fig. 1 in Biology of Isopisthus parvipinnis: an abundant sciaenid species captured bycatch during sea-bob shrimp fishery in Brazil
Fig. 1. Map of the studied area (Ilhéus city, Bahia State, Brazil) indicating the sample sites (x) and the isobaths (dashed lines).
Fig. 2 in Population structure, growth and fishery yield of Leporinus acutidens (Valenciennes, 1837) (Teleostei: Anostomidae) in Yacyretá Reservoir (Argentina)
Fig. 2. Water levels of the Paraná River at Posadas (Argentina). Values represent monthly average water levels between January 1990 and January 1999.
Fig. 3 in Population structure, growth and fishery yield of Leporinus acutidens (Valenciennes, 1837) (Teleostei: Anostomidae) in Yacyretá Reservoir (Argentina)
Fig. 3. Season and study period variation in the average marginal increment (MI) of L. acutidens. First period: 1990–1994, second period: 1995–1998.
Fig. 5 in Size composition, monthly condition factor and morphometrics for fishery-dependent samples of Rioraja agassizi (Chondrichthyes: Rajidae), off Santos, Southeast Brazil
Fig. 5. Relationships between total (black symbols) and gutted weight (g) (grey symbols) for male (above) and females (below) of Rioraja agassizi.
Fig. 2 in Size composition, monthly condition factor and morphometrics for fishery-dependent samples of Rioraja agassizi (Chondrichthyes: Rajidae), off Santos, Southeast Brazil
Fig. 2. Maps of Southeast Brazil, showing the fishing hauls by month, conducted by a total of eight fishing vessels. Symbols represent the fishing hauls from where samples of Rioraja agassizi were collected (dotted circles), or when this information was not available, the total hauls recorded by the skippers (crosses).
Fig. 6 in Size composition, monthly condition factor and morphometrics for fishery-dependent samples of Rioraja agassizi (Chondrichthyes: Rajidae), off Santos, Southeast Brazil
Fig. 6. Median condition factor by month (from March, 2005 to March, 2006) considering total (black line) and gutted weight (g) (grey line) for males (above) and females (below) of Rioraja agassizi. Vertical bars represent the data interval.
Fig. 4 in Size composition, monthly condition factor and morphometrics for fishery-dependent samples of Rioraja agassizi (Chondrichthyes: Rajidae), off Santos, Southeast Brazil
Fig. 4. Relationship of disc width (cm) as a dependent variable of total length (cm) for males (black symbols) and females (grey symbols) of Rioraja agassizi.
Fig. 1 in Size composition, monthly condition factor and morphometrics for fishery-dependent samples of Rioraja agassizi (Chondrichthyes: Rajidae), off Santos, Southeast Brazil
Fig. 1. Map of the study area, southeast Brazil, south-western Atlantic Ocean. Symbols represent all the fishing hauls from where samples of Rioraja agassizi were collected.
SFA Fisheries statistical report
<p>The Seychelles Fisheries Statistical Report is a comprehensive source of information for the commercial fishing industry, fisheries managers, policymakers, and researchers. The report presents annual updates of fisheries statistics on a bi-annual basis. The report contains data on number of active vessels, catches, effort and catch rate from Seychelles artisanal, semi-industrial longline, industrial longline and industrial purse seine fishery by vessel type, gears, flag, species, and geographical locations.</p>
Motivation and harvesting behaviour of fishers in a specialized fishery targeting a top predator species at risk
<p>Effective management of wildlife resources depends on understanding and cooperating with the human users of the resource, particularly as policies may be rejected if user satisfactions are not met. In Australia, recreational anglers can legally target a migratory top predator, the shortfin mako shark (<em>Isurus oxyrinchus</em>), that is also a species at risk. It is assumed that most of the sharks are released and population remains minimally impacted; yet, the actual release rate of this species is unknown and little information is available on the motivations and satisfactions of anglers that participate in this fishery. The rate of catch-and-release fishing was ascertained by a web survey of recreational shark anglers from three south-eastern Australian states. Respondents reported that ~70% of the captured makos were released, with significant geographic variation in release rates between states. Differences in harvesting behaviour between states could be attributed to the varying value assigned to shortfin mako as a sport fish and table fish among regions. Additionally, higher rates of release among anglers from New South Wales may be linked to increased opportunity for resource substitution (i.e. greater diversity of game fish species) and established norms driven by current catch-and-release fisheries in that region. Increased participation in catch-and-release fishing may be achieved by establishing behavioural norms by the provision of more desirable incentives to release sharks during fishing competitions. Data on regional variation in release rates yields important information for managers to target specialized fishers to incentivize catch-and-release fishing with an objective of changing behaviour. Information on natural resource user motivations and satisfactions, such as studied here, has the potential to guide management actions and the ways in which managers interact with resource users.</p>
Data for: Spatial and temporal genetic stock composition of river herring bycatch in southern New England Atlantic herring and mackerel fisheries
<p>Anadromous river herring (alewife and blueback herring) persist at historically low abundances and are caught as bycatch in commercial fisheries, potentially preventing recovery despite conservation efforts. We used newly established single-nucleotide polymorphism genetic baselines for alewife and blueback herring to define fine-scale reporting groups for each species. We then determined the occurrence of fish from these reporting groups in bycatch samples from a Northwest Atlantic fishery over four years.Within sampled bycatch events, the highest proportions of alewife were from the Block Island (34%) and Long Island Sound (22%) reporting groups, while for blueback herring the highest proportions were from the Mid-Atlantic (47%) and Northern New England (24%) reporting groups. We then quantified stock-specific mortality in a focal geographic area (~3500 km<sup>2</sup> including Block Island Sound) of high bycatch incidence and sampling effort, where the most accurate estimates of mortality could be made. During this period, we estimate that bycatch took about 4.6 million alewife and 1.2 million blueback herring, highlighting the need to reduce bycatch mortality for the most depleted river herring stocks.</p>
Small-scale fisheries of the US (2013-2017)
<p>This data set includes information about the diversity, catch composition, and economic value of small-scale fisheries in the United States. In includes 1,019 small-scale fishing “units” that target 350 commercially reported taxa. Additional information about the data and the methods used to compile the data set are published in <em>A review of small-scale marine fisheries in the United States: Definitions, scale, drivers of change, and policy gaps</em>, published in Marine Policy (2022). </p>
Data for: Coupling dynamic energy budget and population dynamic models to inform stock enhancement in fisheries management
<p><span>Extensive applications of fishery stock enhancement worldwide bring up broad concerns about its negative effects, creating a pivotal need for science-based assessment and planning of enhancement strategies. However, the lack of mechanistic understanding of enhanced population dynamics, particularly the density-dependent processes, leads to compromise in model development and limits the capacity in predicting enhancement effects. Here, we developed an individual-based model based on dynamic energy budget theory and full life history processes, to understand the mechanism of density dependence in population dynamics that emerge from individual-level processes. We demonstrated the utility of the model framework by applying it </span><span>to an extensively enhanced species, Chinese prawn (<em>Fenneropenaeus chinensis</em></span><span>, Penaeidae</span><span>). The model could yield projections reflecting the observed trajectory of population biomass and yields. The model also delineated the key effects of density dependence on the vital rates of growth, fecundity, and starvation mortality. Regarding the manifold effects of stock enhancement, we demonstrated a dampened shape in population biomass and yields with increasing magnitude of enhancement, and trade-offs between the ecological and economic objectives, i.e., pursuing high benefit might compromise the wild population without proper management. Furthermore, we illustrated the possibility of combining stock enhancement and harvest regulation in promoting population recovery while maintaining fisheries yields. We highlight the potential of the proposed model for understanding density dependence in enhancement program, and for designing integrated management strategies. The approach developed herein may serve as a general approach to assess the population dynamics in stock enhancement and inform enhancement management.</span><span> </span></p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.