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57 results for “stomach contents”
Body size measurements and stomach contents of Alligator mississippiensis on Jekyll Island, Georgia
<p>Human-driven land use change can fundamentally alter ecological communities, especially the diversity and abundance of large-bodied predators. Yet despite the important roles large-bodied predators play in structuring communities through feeding, there have been only a few investigations of how the feeding patterns of large-bodied predators change in human-dominated landscapes. One group of large-bodied predators that has been largely overlooked in the context of land use change is the crocodilians. To help fill these gaps we studied the feeding patterns of juvenile American alligators (<em>Alligator mississippiensis</em>) on neighboring barrier islands on the southeast coast of Georgia, USA. Jekyll Island has multiple golf courses and substantial amounts of human activity, while Sapelo Island does not have any golf courses and a much smaller amount of human activity. We found that juvenile alligator populations on both islands ate the same types of prey but in vastly different quantities. Sapelo Island alligators primarily consumed crustaceans while alligators that lived on Jekyll Island's golf courses ate mostly insects/arachnids. Furthermore, the Jekyll Island alligators exhibited a much more generalist feeding pattern (individuals mostly ate the same types of prey in the same quantities) than the more specialized Sapelo Island alligators (diets were more varied across individuals). The most likely explanation for our results is that alligators living on golf courses have different habitat use patterns and have access to different prey communities relative to alligators in more natural habitats. Thus, land use change can strongly alter the feeding patterns of large-bodied predators and, as a result, may affect their body condition, exposure to human-made chemicals, and role within ecological communities.</p>
Dietary adaptations along the Northern limit of distribution: What does the smooth snake (Coronella austriaca) eat in Norway? Metabarcoding of stomach content and visual analysis of faeces
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Body size measurements and stomach contents of Alligator mississippiensis on Jekyll Island, Georgia
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Data from: Exceptionally preserved stomach contents of a young tyrannosaurid reveal an ontogenetic dietary shift in an iconic extinct predator (TMP 2009.12.14 Citipes tail segment)
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FIGURE 7. Culeolus likae. A in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 7. Culeolus likae. A: individual; B: vesicles of the tunic; C: internal anatomy (without branchial sac).
FIGURE 4 in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 4. Styela andeepensis sp. nov.. A: individual attached to the tunic of Culeolus suhmi; B: scheme showing internal anatomy (without branchial sac).
FIGURE 1 in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 1. Study area with the locations where the samples were collected (stations 7, 9, 13, 14, 16).
FIGURE 6. Culeolus anonymus. A in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 6. Culeolus anonymus. A: individual; B: vesicles of the tunic; C: internal anatomy (without branchial sac).
FIGURE 8. Oligotrema lyra. A in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 8. Oligotrema lyra. A: individual; B: papillae and oral lobes, pharynx perforations and muscle bands.
FIGURE 3. Corynascidia suhmi. A in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 3. Corynascidia suhmi. A: individual; B: pre-pharyngeal band around dorsal tubercle; C: branchial sac.
FIGURE 5. Culeolus suhmi. A in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 5. Culeolus suhmi. A: individual showing attached ascidian epibiont; B: postero-ventral papillae and vesicles of the tunic; C: internal anatomy (without branchial sac).
Stomach content, biomass, abundance and body score of long-tailed ducks (Clangula hyemalis) from south-eastern Baltic Sea
<p>The long-tailed duck (<em>Clangula hyemalis</em>) is a vulnerable and declining species wintering in the Baltic Sea. The introduction of the invasive fish, the round goby (<em>Neogobius melanostomus</em>), dramatically impacted the benthic macrofauna in hard-bottom, while no significant changes occurred in soft-bottom benthic macrofauna. Therefore, we aimed to assess the extent to which the diet of long-tailed duck changed in two different bottom types. We analysed the stomach content of 251 long-tailed ducks bycaught in gillnets from 2016 to 2020 in hard- and soft-bottom habitats and compared these results with those published by Žydelis and Ruškyte (2005). The results show that the long-tailed duck experienced a change in diet in hard-bottom habitats, shifting from the blue mussel to Hediste diversicolor, barnacles and fish. In soft-bottom habitats, their diet remained similar over time and was based on H. diversicolor, a few bivalve species and Saduria entomon. There was no evidence of significant differences in diet neither between sex nor age. Despite the above-mentioned changes in diet, the average body condition of the species did not change neither over time nor between habitats. This confirms that long-tailed ducks have high feeding flexibility and quick species response to changes in prey availability, as they are capable of shifting their diet to new prey.</p>
FIGURE 2 in Stomach content analysis of young Russell's oarfish (Regalecus russelii) from Taiwan, and a report on an unusual case of predation
FIGURE 2. Sampling site at the Tamsui River mouth (A), specimen photograph of Russell's oarfish (B) (catalog number: ASIZP0060540), and preys found in its stomach: Engraulis japonicus, 18.1 mm SL (C); Pomadasys kaakan, 9.8 mm SL (D); Secutor sp. 11.1 mm SL (E); Luciferidae gen. sp., 12.5 mm TL (F); Pinnotheridae gen. sp., 3.8 mm TL (G); and crab megalopa, 3.1 mm TL (H).
FIGURE 1 in Stomach content analysis of young Russell's oarfish (Regalecus russelii) from Taiwan, and a report on an unusual case of predation
FIGURE 1. Map of sampling site in this study and the four sites (sites A, B, C, D) in Wang's study (1997). Grey lines denote depth contour.
FIGURE 3 in Description of a new alpheid shrimp, Automate isabelae sp. nov. (Decapoda, Caridea, Alpheidae) found in fish stomach contents of the lane snapper Lutjanus synagris (Linnaeus, 1758), from the west coast of Florida, Gulf of Mexico
FIGURE 3. Automate isabelae sp. nov. paratype, South of Marquesas Keys, Florida, USNM (1492803): A, left major cheliped, lateral view; B, same, mesial view; C, same, showing the size of dactylus mesial setation; D, same, detail of carpus, mesial view; E, right minor cheliped, lateral view; F, same, mesial view; G, same, carpus detail. Scales equal 2 mm (A–C, E–F), 1 mm (D, G).
FIGURE 1 in Description of a new alpheid shrimp, Automate isabelae sp. nov. (Decapoda, Caridea, Alpheidae) found in fish stomach contents of the lane snapper Lutjanus synagris (Linnaeus, 1758), from the west coast of Florida, Gulf of Mexico
FIGURE 1. Automate isabelae sp. nov. holotype, South of Marquesas Keys, Florida, USNM (1492802): A, anterior portion of carapace and cephalic appendages, dorsal view; B, same, lateral view; C, left second pereopod, lateral view; D, left fourth pereopod, propodus and dactylus detail, lateral view; E, right fifth pereopod, lateral view; F, telson and uropods, dorsal view. Scales equal 1 mm (A–B, D), 2 mm (C, E–F).
FIGURE 2 in Description of a new alpheid shrimp, Automate isabelae sp. nov. (Decapoda, Caridea, Alpheidae) found in fish stomach contents of the lane snapper Lutjanus synagris (Linnaeus, 1758), from the west coast of Florida, Gulf of Mexico
FIGURE 2. Automate isabelae sp. nov. holotype, South of Marquesas Keys, Florida, USNM (1492802): A, right major cheliped, lateral view; B, same, mesial view; C, left minor cheliped, lateral view; D, same, mesial view. Scales equal 2 mm (A– B), 1 mm (C–D).
FIGURE 4 in Description of a new alpheid shrimp, Automate isabelae sp. nov. (Decapoda, Caridea, Alpheidae) found in fish stomach contents of the lane snapper Lutjanus synagris (Linnaeus, 1758), from the west coast of Florida, Gulf of Mexico
FIGURE 4. Automate isabelae sp. nov. paratype, 65 Km E of Naples, Florida, eastern Gulf of Mexico, Florida, USNM (1492804): A, body, lateral view; B, anterior portion of carapace and cephalic appendages, dorsal view; C, same, lateral view; D, right third maxilliped, lateral view; E, same, detail of distal part of ultimate segment, mesial view; F, left third pereopod, lateral view; G, same, detail of distal part of propodus and dactylus, mesial view; H, telson and uropods, dorsal view. Scales equal 2 mm (A), 1 mm (B–D, F, H), 0.5 mm (E, G).
Figure 4 in The carcinofauna found in stomach contents of the flying gurnard (Dactylopterus volitans) on the continental shelf of the Campos Basin, Brazil
Figure 4. Superorder Peracarida, order Amphipoda. (a) Phtisica sp. (family Caprellidae); (b) Podocerus sp. (family Podoceridae); (c) Ampelisca sp. (family Ampeliscidae); (d) Photidae sp.
Figure 2 in The carcinofauna found in stomach contents of the flying gurnard (Dactylopterus volitans) on the continental shelf of the Campos Basin, Brazil
Figure 2. Relative abundance of Crustacea found in Dactylopterus volitans stomach contents collected at Campos Basin by stations. Numbers of fishes analysed for each station are given in square brackets.
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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)
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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
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.