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30 results for “desert fish”
FIG. 6 in The ways of fish beyond the sea: fish circulation and consumption in the Atacama desert, northern Chile, during the Formative period (500 cal B.C. - 700 cal A.D.)
FIG. 6. — Headless dried fish offered to a 4-6 years old infant in the route of Calate-Loa River mouth.
FIG. 7 in The ways of fish beyond the sea: fish circulation and consumption in the Atacama desert, northern Chile, during the Formative period (500 cal B.C. - 700 cal A.D.)
FIG. 7. — Composite food made of two kind of fishes tied together by a braided rope: a complete anchoveta and a boneless fillet of a bigger fish. Topater 01 cemetery (Gallardo 2017: fig. 2). Scale bar: 5 cm.
FIG. 9 in The ways of fish beyond the sea: fish circulation and consumption in the Atacama desert, northern Chile, during the Formative period (500 cal B.C. - 700 cal A.D.)
FIG. 9. — Graphic that indicates the relation between cranial and postcranial skeletal units in routes, Quillagua and interior oasis sites from the Atacama Desert during the Formative period. Both inferior bars show the same relation in reference skeletons from Trachurus murphyi Nichols, 1920 (60 cranial and 41 postcranial elements) and Cilus gilberti (Abbott, 1899) (60 cranial and 42 postcranial elements). Abbreviation: NISP, number of identified specimens.
FIG. 2 in The ways of fish beyond the sea: fish circulation and consumption in the Atacama desert, northern Chile, during the Formative period (500 cal B.C. - 700 cal A.D.)
FIG. 2. — Altitudinal profile of the region with the position from the different localities mentioned in the article. Sites in italics: main geographical landmarks. Ab- breviation: m a.s.l., meters above sea level.
FIG. 4 in The ways of fish beyond the sea: fish circulation and consumption in the Atacama desert, northern Chile, during the Formative period (500 cal B.C. - 700 cal A.D.)
FIG. 4. — Radiocarbon datations from the Formative sites of the Atacama Desert considered in this study. Marine and human material samples were excluded. Calibration made by SHCAL13 curve (Hogg et al. 2013) using Calib 704 (Stuiver et al. 2005).
Fig. 4 in A new species of the neopterygian fish Enchodus from the Duwi Formation, Campanian, Late Cretaceous, Western Desert, central Egypt
Fig. 4. Majority rule consensus of 222 equally parsimonious trees (TL = 263, CI = 0.53, HI = 0.47, RI = 0.75, and RC = 0.4). Numbers next to branches indicate the percentage of trees in which each clade is present.
Fig. 3 in A new species of the neopterygian fish Enchodus from the Duwi Formation, Campanian, Late Cretaceous, Western Desert, central Egypt
Fig. 3. Digital reconstructions of the aulopiform teleost Enchodus tineidae sp. nov. holotype (MUVP 59) from the Campanian of central Egypt. Right dentary showing its caudal extent, otherwise obscured by matrix, in lateral (A) and medial (B) views. Caudal portion of the left anguloarticular in lateral view (C), showing its dorsal aspect, otherwise obscured by matrix. Right ectopterygoid showing its caudal extent and dorsal aspect, otherwise obscured by matrix, in lateral (D), caudodorsal (E), showing V-shaped trough for articulation with the dermopalatine, and medial (F) views. Abbreviations: d, dentary tooth; E, ectopterygoid tooth; numbers 1–13 indicate tooth position in the respective bone.
Fig. 2 in A new species of the neopterygian fish Enchodus from the Duwi Formation, Campanian, Late Cretaceous, Western Desert, central Egypt
Fig. 2. Aulopiform teleost Enchodus tineidae sp. nov. holotype (MUVP 59) from the Campanian of central Egypt. A, B. Photographs of specimen in lateral (A1) and medial (B1) views; photographs with identifiable elements outlined, in lateral (A2) and medial (B2) views. C. Close up of denticles of the lateral tooth row.
"The sound comes from a meadow in the Sierra Nevada Mountains in California. The meadow is at an elevation of 2400 meters near a mountain named Olancha Peak, which is 3700 meters in altitude. Ihave a group of friends with which Ibackpack (trek) into the mountains. Our goal was to spend some time in the mountains and hike to the top of Olancha Peak (…) By the time we reached the meadow, we were in a forest and there was still snow on the ground in some places. We took the trip in June of 2006. The Sierra Nevada Mountains are a large mountain range. Much of the range is protected by national parks or preserved areas we call 'wilderness areas' (…) Ihave been backpacking for nearly 40 years and Iwill hopefully continue with this challenging activity for 40 years more! Many of my friends are much younger than Iam and it gives me much satisfaction to be able to have as much or more stamina for this activity than they have! When we are on these trips, we hike up peaks, catch fish, drink some whiskey around campfires and enjoy our time in the beautiful solitude. My memories of this trip were of the steep, hot hike from the desert to the cool meadow; the overall beauty of the nature, the absolute solitude of our campsite near the meadow; the strenuous hike to the top of Olancha Peak; the camaraderie of my friends; and, of course the sound of the frogs in the meadow. The frog sounds were astounding to me and Iwould listen in awe of the creature's instinctual desire to reproduce and continue the existence of their kind. Surely there were different species in the meadow for some of the frog sounds were different than others. The sounds only occurred after the Sun went down for the evening. Istood next to the creek in the meadow and recorded the sounds using my digital camera." [Peter/plentz1960]16 in Collecting Sounds. Online Sharing of Field Recordings as Cultural Practice
"The sound comes from a meadow in the Sierra Nevada Mountains in California. The meadow is at an elevation of 2400 meters near a mountain named Olancha Peak, which is 3700 meters in altitude. Ihave a group of friends with which Ibackpack (trek) into the mountains. Our goal was to spend some time in the mountains and hike to the top of Olancha Peak (…) By the time we reached the meadow, we were in a forest and there was still snow on the ground in some places. We took the trip in June of 2006. The Sierra Nevada Mountains are a large mountain range. Much of the range is protected by national parks or preserved areas we call 'wilderness areas' (…) Ihave been backpacking for nearly 40 years and Iwill hopefully continue with this challenging activity for 40 years more! Many of my friends are much younger than Iam and it gives me much satisfaction to be able to have as much or more stamina for this activity than they have! When we are on these trips, we hike up peaks, catch fish, drink some whiskey around campfires and enjoy our time in the beautiful solitude. My memories of this trip were of the steep, hot hike from the desert to the cool meadow; the overall beauty of the nature, the absolute solitude of our campsite near the meadow; the strenuous hike to the top of Olancha Peak; the camaraderie of my friends; and, of course the sound of the frogs in the meadow. The frog sounds were astounding to me and Iwould listen in awe of the creature's instinctual desire to reproduce and continue the existence of their kind. Surely there were different species in the meadow for some of the frog sounds were different than others. The sounds only occurred after the Sun went down for the evening. Istood next to the creek in the meadow and recorded the sounds using my digital camera." [Peter/plentz1960]16
Ignorance is not bliss: Evolutionary naïveté in an endangered desert fish and implications for conservation
<p><span><em>Predator naiveté</em> </span><span>has been invoked to explain the impacts of non-native predators on isolated populations that evolved with limited predation. Such impacts have been repeatedly observed for the endangered Pahrump poolfish, <em>Empetrichthys latos</em>, a desert fish species that evolved in isolation since the end of the Pleistocene. We tested Pahrump poolfish anti-predator responses to conspecific chemical alarm cues released from damaged epidermal tissue in terms of fish activity and water column position. Pahrump poolfish behavioural responses to conspecific alarm cues did not differ from responses to a dechlorinated tap water control. As a positive control, the well-studied fathead minnow, <em>Pimephales promelas</em>, showed significant alarm cue responses in terms of reduced activity and lowered water column position. The density of epidermal club cells, the presumptive source of alarm cues, was significantly lower in Pahrump poolfish relative to fathead minnows. Therefore, anti-predator competence mediated by conspecific alarm cues does not seem to be a component of the ecology of Pahrump poolfish. These findings provide a proximate mechanism for the vulnerability of Pahrump poolfish to non-native predators, with implications for conservation and management of insular species.</span></p>
Data from: Demography predicts genetic effective size in a desert stream fish community
<p>Demographic data collected during long-term diversity monitoring and short-term ecological surveys were used to calculate summary statistics to compare with estimates of genetic effective size for nine species occurring in the Gila River, New Mexico, USA. Diversity survey data collected by New Mexico Department of Game and Fish from 1988 to 2010 were converted to presence/absence data to create detection histories for each of the nine focal species. Simple occupancy models of detection histories implemented using program PRESENCE were used to estimate the annual probability of sites becoming extirpated. A second data source from affiliated short-term ecological studies provided numbers of individuals captured and area sampled and was used to estimate mean density of adult individuals across sample sites. These data were also used to calculated an index of commonness that incorporates both relative abundance and study wide occupancy. Microsatellite genotypes from a previous study and Dryad submission were used to estimate effective number of breeders and genetic effective size (estimates included in this submission) for each species and contemporary migration rates. Migration rates were estimated using the Bayesian assignment model implemented in program BIMr. Outputs from all independent model runs and code to process output files are included with this data submission.</p>
Atlas of Living Australia: Australian Desert Fishes, Atlas of Living Australia
This resource provides an insight into, and photos of, Australian desert fishes and their habitats. It includes abstracts of all native and exotic fishes and documentation of their habitats.
Genetic erosion in an endangered desert fish during a multi-decadal megadrought despite long-term supportive breeding
<p>Human water use combined with a recent megadrought have reduced river and stream flow through the Southwestern United States and led to periodic drying of formerly perennial river segments. Reductions in snowmelt runoff and increased extent of drying collectively threaten short-lived, obligate aquatic species, including the endangered Rio Grande Silvery Minnow. This species experiences 'boom-and-bust' population dynamics where large fluctuations in abundance are expected to lower estimates of effective population size and erode genetic diversity over time. Rates of diversity loss are also affected by additions of hatchery-origin fish used to supplement the wild population. We leveraged demographic and genetic data from wild and hatchery individuals to understand the relationship of genetic diversity and effective population size to abundance over the last two decades. Genetic diversity was low during the early 2000s, but diversity and demographic metrics stabilized after the hatchery program was initiated and environmental conditions improved. Yet, from 2017 onward, allelic diversity declined (Cohen's <em>d</em>=1.34) and remains low despite hatchery stocking and brief wild population recovery. Across the time series, single-sample estimates of effective population size (N<sub>eD</sub>) were positively associated (<em>r</em>=0.53) with wild/total abundance, but as the proportion of hatchery-origin spawners increased, N<sub>eD</sub> was reduced (N<sub>eD</sub> <em>r</em>= -0.55). Megadrought limits wild spawner abundance and precludes refreshment of hatchery brood stocks with wild fish, hence we predict an increasingly hatchery-dominated population, and accelerated loss of genetic diversity despite supplementation. We recommend an adaptive and accelerated management plan that integrates river flow management and hatchery operations to slow the pace of genetic diversity loss exacerbated by megadrought.</p>
Warming waters beget smaller fish: evidence for reduced size and altered morphology in a desert fish following anthropogenic temperature change
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Genetic erosion in an endangered desert fish during a multi-decadal megadrought despite long-term supportive breeding
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Data from: Demography predicts genetic effective size in a desert stream fish community
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Commercial fishing influences life histories of fish in the world’s largest desert lake
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Ignorance is not bliss: Evolutionary naïveté in an endangered desert fish and implications for conservation
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Data from: Consumption explains intraspecific variation in nutrient recycling stoichiometry in a desert fish
Consumer-driven nutrient recycling can have substantial effects on primary production and patterns of nutrient limitation in aquatic ecosystems by altering the rates as well as the relative supplies of the key nutrients nitrogen (N) and phosphorus (P). While variation in nutrient recycling stoichiometry has been well-studied among species, the mechanisms that explain intraspecific variation in recycling N:P are not well-understood. We examined the relative importance of potential drivers of variation in nutrient recycling by the fish Gambusia marshi among aquatic habitats in the Cuatro Ciénegas basin of Coahuila, Mexico. There, G. marshi inhabits warm thermal springs with high predation pressure as well as cooler, surface runoff-fed systems with low predation pressure. We hypothesized that variation in food consumption among these habitats would drive intraspecific differences in excretion rates and N:P ratios. Stoichiometric models predicted that temperature alone should not cause substantial variation in excretion N:P, but that further reducing consumption rates should substantially increase excretion N:P. We performed temperature and diet ration manipulation experiments in the laboratory and found strong support for model predictions. We then tested these predictions in the field by measuring nutrient recycling rates and ratios as well as body stoichiometry of fish from nine sites that vary in temperature and predation pressure. Fish from warm, high-predation sites excreted nutrients at a lower N:P ratio than fish from cool, low-predation sites, consistent with the hypothesis that reduced consumption under reduced predation pressure had stronger consequences for P retention and excretion among populations than did variation in body stoichiometry. These results highlight the utility of stoichiometric models for predicting variation in consumer-driven nutrient recycling within a phenotypically variable species.
Data from: Untangling the evolutionary history of a highly polymorphic species: introgressive hybridization and high genetic structure in the desert cichlid fish Herichthys minckleyi
Understanding the origin of biodiversity requires knowledge on the evolutionary processes that drive divergence and speciation, as well as on the processes constraining it. Intraspecific polymorphisms can provide insight into the mechanisms that generate and maintain phenotypic, behavioural and life history diversification, and can help us understand not only the processes that lead to speciation but also the processes that prevent local fixation of morphs. The 'desert cichlid' Herichtys minckleyi is a highly polymorphic species endemic to a biodiversity hotspot in northern Mexico, the Cuatro Ciénegas valley. This species is polymorphic in body shape and trophic apparatus, and eco-morphotypes coexist in small spring-fed lagoons across the valley. We investigated the genetic structure of these polymorphisms and their phylogeographic history by analysing the entire control region of the mitochondrial DNA and 10 nuclear microsatellite markers in several populations from different sites and morphs. We found two very divergent mitochondrial lineages that most likely predate the closing of the valley and are not associated with morphotypes or sites. One of these lineages is also found in the sister species Herichthys cyanoguttatus. Data from neutral microsatellite markers suggest that most lagoons or drainages constitute their own genetic cluster with sympatric eco-morphotypes forming panmictic populations. Alternative mechanisms such as phenotypic plasticity and a few loci controlled traits provide possible explanations for the sympatric coexistence of discrete nonoverlapping eco-morphotypes with apparent lack of barriers to gene flow within multiple lagoons and drainages.
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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.