Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
99
datasets available to search
ShareScore release 0.9.0
Dataset results
99 results for “sperm whale”
Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis
Sperm whales interact with commercially important groundfish fisheries offshore in the Gulf of Alaska (GOA). This study aims to use stable isotope analysis to better understand the trophic variability of sperm whales and their potential prey, and to use dietary mixing models to estimate the importance of prey species to sperm whale diets. We analyzed tissue samples from sperm whales and seven potential prey (five groundfish and two squid species). Samples were analyzed for stable carbon and nitrogen isotope ratios, and diet composition was estimated using Bayesian isotopic mixing models. Mixing model results suggest that an isotopically combined sablefish/dogfish group, skates, and rockfish make up the largest proportion of sperm whale diets (35%, 28% and 12%) in the GOA. The top prey items of whales that interact more frequently with fishing vessels consisted of skates (49%) and the sablefish/dogfish group (24%). This is the first known study to provide an isotopic baseline of adult male sperm whales and these adult groundfish and offshore squid species, and to assign contributions of prey to whale diets in the GOA. This study provides information to commercial fishermen and fisheries managers to better understand trophic connections of important commercial species.
FIG. 7 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 7. — Cranium of Diaphorocetus poucheti (Moreno, 1892) MLP 5-6 (holotype) in dorsal (A), ventral (B), right lateral (C), and posterior (D) views, illustrating among others some diagnostic characters at the genus and species levels. The figured photos were taken by one of us (CM) in 1981, with a preservation state that is closer to the original illustrations in Lydekker (1893), prior to the separation of the right and left rostral parts and pterygoids/palatines from the neurocranium and with more complete antorbital notches and right orbit. Scale bar: 200 mm.
FIG. 4FIG. 4 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 4FIG. 4. — Cranium of Diaphorocetus ortegai n. sp. MUSM 3246 (holotype, Chilcatay Formation, East Pisco Basin, Peru) in left (A) and right (B) lateral views. Black dashed lines for sutures, foramina, and outline of several bones and temporal fossa; red dashed line for posterior outline of supracranial basin. Scale bar: 200 mm.
FIG. 1 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 1. — Geographic and geological setting. A, Location of the main outcrops of the Chilcatay Formation along the southern coast of Peru. B, Simplified map providing the position of Ullujaya (the type locality of Diaphorocetus ortegai n. sp.) alongside other highly fossiliferous sites of the Ica desert (including Zamaca, the type locality of Rhaphicetus valenciae Lambert, Muizon, Urbina & Bianucci, 2020). C, Schematic stratigraphic column of the Cenozoic succession exposed in the East Pisco Basin. D, Simplified stratigraphic section of the Chilcatay Formation in Ullujaya, showing the exact position of the holotype of D. ortegai n. sp. in the Ct1 allomember, Ct1a facies association. E, Simplified stratigraphic section of the Chilcatay Formation in Zamaca, showing the exact position of the holotype of R. valenciae in the Ct1 allomember, Ct1a facies association. Both sections D and E include positions of ash layers dated with 40Ar/39Ar and shell-rich beds dated with 87Sr/86Sr along with the corresponding age estimates (after Bosio et al. 2022). Maps and sections modified from Bianucci et al. (2018b), Di Celma et al. (2018, 2019), Bosio et al. (2020, 2022), and Lambert et al. (2020).
APPENDIX 5 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
APPENDIX 5. — Strict consensus of 15 most parsimonious trees resulting from the heuristic search performed with down-weighting of homoplastic characters (k = 3). Tree length 188; Goloboff fit -42.64; CI 0.45; RI 0.68.
FIG. 6 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 6. — Cranium of Diaphorocetus ortegai n. sp. MUSM 3246 (holotype, Chilcatay Formation, East Pisco Basin, Peru) in right (A) and left (B) anterodorsolateral views. Black dashed lines for sutures, foramina, bony nares, and outline of several bones. Scale bar: 200 mm.
FIG. 3 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 3. — Cranium of Diaphorocetus ortegai n. sp. MUSM 3246 (holotype, Chilcatay Formation, East Pisco Basin, Peru) in ventral view; photo and corresponding line drawing. Hatching for main break surfaces; black dashed lines for more tentative interpretations of sutures and edges. ali: alisphenoid. Scale bar: 200 mm.
FIG. 9 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 9. — Comparison of the crania of Diaphorocetus ortegai n. sp. MUSM 3246 (holotype) (a, c) and Rhaphicetus valenciae Lambert, Muizon, Urbina & Bianucci, 2020 MUSM 2543 (holotype) (B, D), both from the Chilcatay Formation (East Pisco Basin, Peru), in dorsal (A, B) and right lateral (C, D) views, based on 3D models resulting from surface-scanning (see Appendices 1; 2), illustrating the difference in the cross-section of the maxillae on the rostrum (much more dorsoventrally flattened in D. ortegai n. sp.). Note that most of the premaxillae is lost on the rostrum of the holotype of D. ortegai n. sp., truncating the dorsal part of the anterior cross-sections. Scale bar: 200 mm.
FIG. 2 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 2. — Cranium of Diaphorocetus ortegai n. sp. MUSM 3246 (holotype, Chilcatay Formation, East Pisco Basin, Peru) in dorsal view; photo and corresponding line drawing. Grey shading for sediment; hatching for main break surfaces; black dashed lines for more tentative interpretations of sutures and edges; and red dashed lines for posterior and lateral outlines of supracranial basin. Scale bar: 200 mm.
FIG. 5 in A new platyrostrine sperm whale from the Early Miocene of the southeastern Pacific (East Pisco Basin, Peru) supports affinities with the southwestern Atlantic cetacean fauna
FIG. 5. — Cranium of Diaphorocetus ortegai n. sp. MUSM 3246 (holotype, Chilcatay Formation, East Pisco Basin, Peru) in anterodorsal view (A) (photo and corresponding line drawing) and posterior view (B). Grey shading for sediment; hatching for main break surfaces; black dashed lines for more tentative interpretations of sutures and edges; red dashed lines for posterior outline of supracranial basin and outline of brain cavity. Scale bars: 200 mm.
Fig. 5 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 5. Schematic comparisons of the periotic of MLP 76-IX-5-1, "Preaulophyseter gualichensis" Caviglia and Jorge, 1980 (A) with "Aulophyseter" rionegrensis (B), Acrophyseter deinodon (C, modified from Lambert et al. 2016), Zygophyseter varolai (D, modified from Bianucci and Landini 2006), Aulophyseter morricei (E, modified from Kellogg 1927), Orycterocetus crocodilinus (F, modified from Kellogg 1965), and Physeter macrocephalus (G, modified from Kasuya 1973). In dorsal (A1–G1), ventral (A2–G2), medial (A3–G3), and lateral (A4–C4, E4–G4) views. Black areas indicate anatomical foramina. Not to scale.
Fig. 4 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 4. Isolated periotics of a sperm whale Physeteroidea indet. from the Miocene of Patagonia. A. MPEF-PV-605, right periotic. B. MPEF-PV-651, right periotic. C. MPEF-PV-6098, left periotic. D. MLP 80-VIII-30-133a, right periotic. E MLP 80-VIII-30-133b, left periotic. F. MLP 52-X-2-8, right periotic. In dorsal (A1–F1), ventral (A2–F2), medial (A3–F3), and lateral (A4–F4) views. G. MLP 56-IX-2-7, fragmentary periotic in dorsal (G1) and medial (G2) views.
Fig. 2 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 2. Teeth of a sperm whale Physeteroidea indet. previously described as "Preaulophyseter gualichensis" Caviglia and Jorge, 1980, MLP 76-IX5-1, from the Miocene of Gran Bajo del Gualicho Formation, Patagonia, Argentina; in labial (A1) and lingual (A2) views, and detailed view of the crown (A3) and enamel (A4). I and II refer to the two fragmentary teeth of the MLP 76-IX-5-1 (the best and worst preserved tooth, respectively).
Fig. 3. Sperm whale Physeteroidea indet. A in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 3. Sperm whale Physeteroidea indet. A. Left periotic of nomen dubium "Preaulophyseter gualichensis" Caviglia and Jorge, 1980, MLP 76-IX-5-1, from the Miocene of Gran Bajo del Gualicho Formation, Patagonia, Argentina, in dorsal (A1, A2), ventral (A3, A4), medial (A5, A6), and lateral (A7, A8) views. B, C. Two isolated right periotics from the Miocene of Patagonia, MLP 76-IX-2-3 (B) and MLP 76-IX-2-4 (C), in dorsal (B1, C1), ventral (B2, C2), medial (B3, C3), and lateral (B4, C4) views. Photographs (A1, A3, A5, A7, B, C) and explanatory drawings (A2, A4, A6, A8). Abbreviations: abf, anterior bullar facet; aca, aperture for cochlear aqueduct; ai, anterior incisure; ao, accessory ossicle; ava, aperture for the vestibular aqueduct; eh, epitympanic hiatus; fasu, facial sulcus; fo, fenestra ovalis; fosi, foramen singulare; fr, fenestra rotunda; iam, internal acoustic meatus; lt, lateral tuberosity; mf, mallear fossa; pbf, posterior bulla facet; pofc, proximal opening of facial canal (VII); sct, spiral cribiform tract (VIII).
Fig. 1 in Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Fig. 1. Geographic location of studied area in Patagonia, southern Argentina (A) and location of the marine Miocene outcrops (B, stars) where the specimens included in this study were collected: Gran Bajo del Gualicho Formation (1) and Gaiman Formation (2).
Fig. 2. A in Carcharocles-bitten sperm whale tooth from the Neogene of the Coastal Eastern United States
Fig. 2. A possible origin of the Otodus tooth bite traces on the root of the Neogene sperm whale tooth CMM-V-8955. An Otodus sp. (foreground) is biting the rostrum of a sperm whale (background). That the bite traces occur on the tooth of the sperm whale hints at a live antagonistic interaction between these two macropredators.
Fig. 1 in Carcharocles-bitten sperm whale tooth from the Neogene of the Coastal Eastern United States
Fig. 1. Otodus-bitten sperm whale tooth (CMM-V-8955) from the Neogene of the Aurora Phosphate Mine, North Carolina, USA; in lingual (A1) and anteromedial (A2) views, showing all three bite traces, as indicated by the numbers 1–3; A3, enlarged view of the two primary bite traces, one of which shows the serration marks left as the shark tooth cut into the sperm whale tooth. The specimen was whitened with sublimed ammonium chloride to enhance contrast.
Fig. 3 in Notes on the brain and encephalization quotient of two sperm whales
Fig. 3 - Logarithmic plot of the brain and body weight of several mammals. The solid black line represents the expected values for the equation EQ=E /0.12P2/3 following Jerison (1973). The predictable brain weight for a given body weight should ideally fall along the i line. Values above the line represent a brain mass higher than expected for a given body weight. The sources of the data are listed in Table 4. ID 335 and ID 338 represent the values of our two sperm whales (encircled by the red line) to distinguish them from published value for the same species.
Fig. 2 in Notes on the brain and encephalization quotient of two sperm whales
Fig. 2 - Photograph of the right side of the brain of sperm whale ID 335. FS, Sylvian cleft; Cb, cerebellum; TL, temporal lobe; ES, ectosylvian sulcus; SS, suprasylvian sulcus; [OL], presumed position of the orbital lobe. Black bar = 10cm
Fig. 1 in Notes on the brain and encephalization quotient of two sperm whales
Fig. 1 - Drawings of the skull of Physeter macrocephalus, showing a caudal (left) and a lateral (center) view. Red dashed lines indicate the plane of section described in the article. The relative position of the condyles to the profile of the sperm whale is represented in the schematic drawing on the right. (Drawing by M. Demma).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.