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593 results for “fish distribution”
Processed EK60 acoustics data used to examine changes in vertical distribution of mesopelagic fish
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A Permian fish reveals widespread distribution of neopterygian-like jaw suspension
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Data from: Incorporating implicit information to disentangle the impacts of hydropower dams and climate change on basin-scale fish habitat distribution
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Data from: Differential persistence favors habitat preferences that determine the distribution of a reef fish
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Data from: Can collective memories shape fish distributions? A test, linking space-time occurrence models and population demographics
Social learning can be fundamental to cohesive group living, and schooling fishes have proven ideal test subjects for recent work in this field. For many species, both demographic factors, and inter- (and intra-) generational information exchange are considered vital ingredients in how movement decisions are reached. Yet key information is often missing on the spatial outcomes of such decisions, and questions concerning how migratory traditions are influenced by collective memory, density-dependent and density-independent processes remain open. To explore these issues, we focused on Atlantic herring (Clupea harengus), a long-lived, dense-schooling species of high commercial importance, noted for its unpredictable shifts in winter distribution, and developed a series of Bayesian space-time occurrence models to investigate wintering dynamics over 23 years, using point-referenced fishery and survey records from Icelandic waters. We included covariates reflecting local-scale environmental factors, temporally-lagged prey biomass and recent fishing activity, and through an index capturing distributional persistence over time, derived two proxies for spatial memory of past wintering sites. The previous winter's occurrence pattern was a strong predictor of the present pattern, its influence increasing with adult population size. Although the mechanistic underpinnings of this result remain uncertain, we suggest that a 'wisdom of the crowd' dynamic may be at play, by which navigational accuracy towards traditional wintering sites improves in larger and/or denser, better synchronized schools. Wintering herring also preferred warmer, fresher, moderately stratified waters of lower velocity, close to hotspots of summer zooplankton biomass, our results indicative of heightened environmental sensitivity in younger cohorts. Incorporating spatiotemporal correlation structure and time-varying regression coefficients improved model performance, and validation tests on independent observations one-year ahead illustrate the potential of uniting demographic information and non-stationary models to quantify both the strength of collective memory in animal groups and its relevance for the spatial management of populations.
Data from: Speciation and the latitudinal diversity gradient: insights from the global distribution of endemic fish
The nearly universal pattern that species richness increases from the poles to the equator (the latitudinal diversity gradient [LDG]) has been of intense interest since its discovery by early natural-history explorers. Among the many hypotheses proposed to explain the LDG, latitudinal variation in (1) productivity, (2) time and area available for diversification, and (3) speciation and/or extinction rates have recently received the most attention. Because tropical regions are older and were formerly more widespread, these factors are often intertwined, hampering efforts to distinguish their relative contributions to the LDG. Here we examine the global distribution of endemic lake fishes to determine how lake age, area, and latitude each affect the probability of speciation and the extent of diversification occurring within a lake. We analyzed the distribution of endemic fishes worldwide (1,933 species and subspecies from 47 families in 2,746 lakes) and find that the probability of a lake containing an endemic species and the total number of endemics per lake increase with lake age and area and decrease with latitude. Moreover, the geographic locations of endemics in 34 of 41 families are found at lower latitudes than those of nonendemics. We propose that the greater diversification of fish at low latitudes may be driven in part by ecological opportunities promoted by tropical climates and by the coevolution of species interactions.
FIGURE 2 in Ecsenius caeruliventris and E. shirleyae, two new species of blenniid fishes from Indonesia, and new distribution records for other species of Ecsenius
FIGURE 2. Photographs in nature of four similar Ecsenius species of the Prooculis group. a, Ecsenius caeruliventris, Togean Islands, Sulawesi (G.R. Allen); b, Ecsenius shirleyae, off Ujung Padang, Sulawesi (J.E. Randall); c, Ecsenius bimaculatus, Batangas, Luzon, Philippine Islands (J.E. Randall); d, Ecsenius bandanus, Rani Island, off Biak, Irian Jaya (G.E. Barrall).
FIGURE 3 in Ecsenius caeruliventris and E. shirleyae, two new species of blenniid fishes from Indonesia, and new distribution records for other species of Ecsenius
FIGURE 3. Distribution of the Ecsenius species of the Prooculis group. Specimen from Kai Islands lost and unavailable for confirmation of identification.
FIGURE 1 in Ecsenius caeruliventris and E. shirleyae, two new species of blenniid fishes from Indonesia, and new distribution records for other species of Ecsenius
FIGURE 1. Photographs of preserved specimens of three similar Ecsenius species. a–c, Ecsenius caeruliventris: a,b, MZB 12094, holotype, male, 24.3 mm SL (b, ventral surface of head); c, USNM 379435, female, 23.0 mm SL, ventral surface of head (note pale spots). d, Ecsenius shirleyae, USNM 211996, holotype, male, 28.4 mm SL; e, Ecsenius bandanus, USNM 221236, male, 31.7 mm SL, Biak, Irian Jaya, Indonesia.
FIGURE 11. Rhabdosargus sarba, MUFS39628, 167.3 in The sparid fishes of Pakistan, with new distribution records
FIGURE 11. Rhabdosargus sarba, MUFS39628, 167.3 mm SL, Ibrahim Heydri, near Korangi Creek, Karachi. Silvery with prominent longitudinal golden-lines.
FIGURE 10 in The sparid fishes of Pakistan, with new distribution records
FIGURE 10. Pagellus affinis, CEMB- P 2012–00078, 183 mm SL, WWFH, Karachi, fusiform, reddish/ pinkish appearance.
FIGURE 4. Acanthopagrus sheim, PMNH 53008, 196 in The sparid fishes of Pakistan, with new distribution records
FIGURE 4. Acanthopagrus sheim, PMNH 53008, 196 mm SL, WWFH, Karachi. Faint yellowish color in pelvic and anal fin and whitish lower margin of lower caudal lobe.
FIGURE 15 in The sparid fishes of Pakistan, with new distribution records
FIGURE 15. Details of dentition (A-Y) and gill rakers (Z & Z1) in species of family Sparidae from Pakistan; Acanthopagrus catenula, A) upper jaw & B) lower jaw; A. berda, C) upper jaw & D) lower jaw; A. arabicus, E) upper jaw & F) lower jaw; A. sheim, G) upper jaw & H) lower jaw; Sparidentex hasta, I) upper jaw &J) lower jaw; Sparidentex jamalensis., K) upper jaw & L) lower jaw; Crenidens indicus, M) upper jaw & N) lower jaw; Diplodus capensis, O) upper jaw & P) lower jaw; Q) upper and lower jaws of Diplodus omanensis; Rhabdosargus sarba, R) upper jaw & S) lower jaw; Rhabdosargus haffara, T) upper jaw & U) lower jaw; V) upper and lower jaws of Agryrops spinifer; W) upper and lower jaws of Cheimerius nufar; Pagellus affinis, X) upper jaw &Y) lower jaw; Z) Argyrops spinifer, showing comparatively small gill rakers; and Z1) Cheimerius nufar, showing elongated fan-like gill rakers.
FIGURE 1. a in The sparid fishes of Pakistan, with new distribution records
FIGURE 1. a) Acanthopagrus arabicus, PMNH 53006, 182 mm SL, WWFH, Karachi, b) Freshly caught A. arabicus, 80 mm SL, Manora, Karachi, showing blackish margin on dorsal-fin and more vivid yellow coloration in pelvic and anal fins.
FIGURE 7. Creindens indicus, MUFS 39671 in The sparid fishes of Pakistan, with new distribution records
FIGURE 7. Creindens indicus, MUFS 39671(formerly CEMB- P 2012–00009), 221 mm SL, WWFH, Karachi. A typical C. Indicus body, having deep body with 6½ scale rows between dorsal-fin base and lateral line.
FIGURE 3. Acanthopagrus catenula, PMNH 53001, 221 in The sparid fishes of Pakistan, with new distribution records
FIGURE 3. Acanthopagrus catenula, PMNH 53001, 221 mm SL, WWFH, Karachi, showing black margin on dorsal fin and caudal fin (fine black edges on rear end of upper and lower caudal fin lobes, more apparent in fresh specimens).
FIGURE 14. Sparidentex jamalensis., PMNH 52062, 186 in The sparid fishes of Pakistan, with new distribution records
FIGURE 14. Sparidentex jamalensis., PMNH 52062, 186 mm SL, WWFH, Karachi. Showing relatively deeper body than S. hasta in Fig. 5, the second anal spine is much longer than third anal-spine.
FIGURE 9 in The sparid fishes of Pakistan, with new distribution records
FIGURE 9. Diplodus omanensis, CEMB- P 2012–00077 (formerly MUFS 39722), 310 mm SL, WWFH, Karachi. Five transverse black bars from head to body.
FIGURE 6. Cheimerius nufar, MUFS39834, 297.5 in The sparid fishes of Pakistan, with new distribution records
FIGURE 6. Cheimerius nufar, MUFS39834, 297.5 mm SL, WWFH, Karachi. Pinkish tinge and faint bars on the body, first two dorsal spines are shorter and third to nine are elongated.
FIGURE 5. a in The sparid fishes of Pakistan, with new distribution records
FIGURE 5. a) Argyrops spinifer, MUFS39739 (formerly CEMB- P 201200102), 199.4 mm SL, WWFH, Karachi. First two dorsal spines minute, third to sixth somewhat elongated, b) scales on upper part of head, extending in a triangular prolongation to between eyes (A. spinifer 218 mm SL, WWFH, Karachi).
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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.