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181 results for “Aleutian Islands”
Extensive variation in feather ornaments of Whiskered Auklets in the Aleutian Islands reflects age, sex, condition, and geography
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FIGURE 2. Acantorna tahoma n in Acantorna-a new genus of Hymedesmiidae (Porifera, Demospongiae Poecilosclerida) from the western Aleutian Islands of Alaska with description of Acantorna tahoma n. sp.
FIGURE 2. Acantorna tahoma n. sp. A, Holotype, front. B, Holotype, back. C, Holotype from top; note oscules located here. D, Spicule tracts of acantornotes ending in surface brushes forming a palisade. Below confused arrangement of all spicule types. E, Close-up view of spicule brushes of acantornotes at the surface (lower right). F, Section through choanosomal canal ligned by microscleres. G, Choanosomal acanthostyles, acantornotes and microscleres. H, Acantornote from upper left to lower right among microscleres. Blunt end of acanthostyle at left. Tip of acanthostyle pointing to acantornote.
FIGURE 7. Stelodoryx strongyloxeata n in Three new species of Poecilosclerida (Porifera, Demospongiae, Heteroscleromorpha) from the Aleutian Islands, Alaska
FIGURE 7. Stelodoryx strongyloxeata n. sp. A, Choanosomal strongyloxeas. B, Ectosomal style-shaped tornotes. C, Microspined head of ectosomal tornote. D, Large isochelae. E, Small isochelae.
FIGURE 5. Stelodoryx jamesorri n in Three new species of Poecilosclerida (Porifera, Demospongiae, Heteroscleromorpha) from the Aleutian Islands, Alaska
FIGURE 5. Stelodoryx jamesorri n. sp. A, Chanosomal thick strongyloxea (right), occasionally strongylote (left). B, Blunt ends of strongyloxeas sometimes microspined. C, Ectosomal tylote with microspined heads. D, Large isochelae. E, Small isochelae.
FIGURE 4. Stelodoryx jamesorri n in Three new species of Poecilosclerida (Porifera, Demospongiae, Heteroscleromorpha) from the Aleutian Islands, Alaska
FIGURE 4. Stelodoryx jamesorri n. sp. A, Side-view of funnel-shaped holotype on a short stalk with a villous surface. B, Funnel-shaped holotype viewed from the top showing inner sides of the funnel. C, Flabellate paratype with a smooth surface and circular apertures. D, Plumoreticulate choanosomal skeleton, branching spicule tracts are connected by single spicules. E, Ascending and branching spicule tracts, connected by single spicules fanning out at the surface and often ending well above the surface. F, Weakly developed ectosome with abundant isochelae of both size categories.
FIGURE 3. Echinoclathria seguama n in Three new species of Poecilosclerida (Porifera, Demospongiae, Heteroscleromorpha) from the Aleutian Islands, Alaska
FIGURE 3. Echinoclathria seguama n. sp. A, Smooth, choanosomal thick styles at left; ectosomal thin style at right. B, Close-up view of microspined head and acute point of ectosomal thin style. C, Isochelae.
FIGURE 6. Stelodoryx strongyloxeata n in Three new species of Poecilosclerida (Porifera, Demospongiae, Heteroscleromorpha) from the Aleutian Islands, Alaska
FIGURE 6. Stelodoryx strongyloxeata n. sp. A, Holotype. "Folded" fan, inner surface, between the two parts with fewer oscules, outer surface (on the left) with numerous oscules. B, Backside of holotype showing only larger part of the fan with many elevated oscules on the outer surface. Remaining part of broken stalk at lower left. C, Paratype. D, Choanosomal skeleton consists of a reticulation of polyspicular tracts forming quadratic meshes. The meshes become smaller and more dense closer to the surface. The polyspicular tracts end in brushes of style-shaped tornotes at the surface, visible as a darker band on upper end. E, Close-up view of polyspicular, quadratic meshes near the surface, visible at the right. F, Ectosomal tornotes and points of strongyloxeas protruding above surface. Ascending polyspicular tracts are sometimes connected by single spicules.
FIGURE 2. Echinoclathria seguama n in Three new species of Poecilosclerida (Porifera, Demospongiae, Heteroscleromorpha) from the Aleutian Islands, Alaska
FIGURE 2. Echinoclathria seguama n. sp. A, Holotype. Top left: view into the tube. Below: side view. B, Paratype. Top left: view into the tube. Below: side view. C, Reticulate skeleton of single choanosomal styles near the inner walls. D, Plumose skeleton of ascending, branching spicule tracts connected by single spicules and paucispicular tracts. E, A thin ectosomal veneer with abundant isochelae and some single ectosomal thin styles (upper left, darker) above the choanosomal reticulation of single spicules (lower right) near the inner walls. F, Ascending plumose polyspicular tracts with brushes of thin ectosomal styles perpendicular to the surface forming a palisade at the outer walls. G, The ectosomal palisade of brushes of thin styles is sometimes incomplete, then single thin styles and microscleres are in the gaps. H, Brushes of thin styles, points facing out, connected by single spicules.
FIGURE 1 in Three new species of Poecilosclerida (Porifera, Demospongiae, Heteroscleromorpha) from the Aleutian Islands, Alaska
FIGURE 1. Map of the Aleutian Islands, Alaska in the North Pacific Ocean showing the locations where the type specimens of the three new species were collected.
FIGURE 9. Plakina atka n in Two new species of Plakina Schulze, 1880 (Porifera, Plakinidae) from the Aleutian Islands (Alaska, USA)
FIGURE 9. Plakina atka n. sp. Tetralophose calthrops, all rays tetrafurcate, points of rays microfurcate.
FIGURE 7. Plakina atka n in Two new species of Plakina Schulze, 1880 (Porifera, Plakinidae) from the Aleutian Islands (Alaska, USA)
FIGURE 7. Plakina atka n. sp. Thick category of diods with central spines. Probably derived from spined triods through reduction of one ray.
FIGURE 10. Plakina atka n in Two new species of Plakina Schulze, 1880 (Porifera, Plakinidae) from the Aleutian Islands (Alaska, USA)
FIGURE 10. Plakina atka n. sp. Microfurcate end of ray from a tetraloph, tetrafurcate lophocalthrops.
FIGURE 6. Plakina atka n in Two new species of Plakina Schulze, 1880 (Porifera, Plakinidae) from the Aleutian Islands (Alaska, USA)
FIGURE 6. Plakina atka n. sp. Smooth diods, smooth triods and, thicker triods with strongly spined bases of rays.
FIGURE 4. Plakina tanaga n in Two new species of Plakina Schulze, 1880 (Porifera, Plakinidae) from the Aleutian Islands (Alaska, USA)
FIGURE 4. Plakina tanaga n. sp. Trilophose calthrops with tetrafurcate lophose rays and biforked nonlophose ray.
FIGURE 1. Plakina tanaga n in Two new species of Plakina Schulze, 1880 (Porifera, Plakinidae) from the Aleutian Islands (Alaska, USA)
FIGURE 1. Plakina tanaga n. sp. In situ in Little Tanaga Strait at 146m depth encrusting a vertical bedrock wall with numerous other invertebrates. Width of photo approx. 38 cm.
FIGURE 13 in New species of deepsea demosponges (Porifera) from the Aleutian Islands (Alaska, USA)
FIGURE 13. Esperiopsis flagrum sp. nov. a, backside of large isochela. b, Small isochela. c, Side view of small isochela. d, Large and small sigmas.
FIGURE 9 in New species of deepsea demosponges (Porifera) from the Aleutian Islands (Alaska, USA)
FIGURE 9. Stelodoryx oxeata sp. nov. a, Mediumsized category of anchorate, polydentate isochela. b, Small category of anchorate isochelae and centrotylote sigmas.
FIGURE 6 in New species of deepsea demosponges (Porifera) from the Aleutian Islands (Alaska, USA)
FIGURE 6. Monanchora laminachela sp. nov. a, Type specimens in situ, indicated by white arrows. b, Type specimens shortly after collection. c, Type specimens after being frozen. Note different color and different surface structure. d, Choanosomal thick style among thin styles.
FIGURE 2 in New species of deepsea demosponges (Porifera) from the Aleutian Islands (Alaska, USA)
FIGURE 2. Megaciella anisochela sp. nov. a, Holotype. b, Category of thick styles among smaller tylotes and microscleres. c, Tylotes with acanthose ends. d, Close up of acanthose end of tylote. e, Large category of palmate isochela. f, Small category of palmate isochela.
FIGURE 4 in New species of deepsea demosponges (Porifera) from the Aleutian Islands (Alaska, USA)
FIGURE 4. Echinoclathria vasa sp. nov. a, Holotype. b, Holotype in situ at 744m depth in Amchitka Pass c, Holotype during collection. Note characteristic shape of upper end of vase.
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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.
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OpenNeuro
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