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201 results for “Cocos”
Data from: Tracing coco de mer's reproductive history: pollen and nutrient limitation reduce fecundity
Habitat degradation can reduce or even prevent the reproduction of previously abundant plant species. To develop appropriate management strategies, we need to understand the reasons for reduced recruitment in degraded ecosystems. The dioecious coco de mer palm (Lodoicea maldivica) produces by far the largest seeds of any plant. It is a keystone species in an ancient palm forest that occurs only on two small islands in the Seychelles, yet contemporary rates of seed production are low, especially in fragmented populations. We developed a method to infer the recent reproductive history of female trees from morphological evidence present on their inflorescences. We then investigated the effects of habitat disturbance and soil nutrient conditions on flower and fruit production. The 57 female trees in our sample showed a 19.5-fold variation in flower production among individuals over a seven-year period. Only 77.2% of trees bore developing fruits (or had recently shed fruits), with the number per tree ranging from zero to 43. Flower production was positively correlated with concentrations of available soil nitrogen and potassium, and did not differ significantly between closed and degraded habitat. Fruiting success was positively correlated with pollen availability, as measured by numbers and distance of neighbouring male trees. Fruit-set was lower in degraded habitat than in closed forest, while the proportion of abnormal fruits that failed to develop was higher in degraded habitat. Seed size recorded for a large sample of seeds varied widely, with fresh weights ranging from 1 to 18 kg. Shortages of both nutrients and pollen appear to limit seed production of Lodoicea in its natural habitat, with these factors affecting different stages of the reproductive process. Flower production varies widely amongst trees, while seed production is especially low in degraded habitat. The size of seeds is also very variable. We discuss the implications of these findings for managing this ecologically and economically important species.
FIGURES 5–8 in A new Cocos- eating moth of Acria Stephens, 1834 (Lepidoptera, Peleopodidae) from China, with descriptions of its adult, larva and pupa
FIGURES 5–8. Genitalia of Acria cocophaga sp. nov. 5, 6, male; 7, 8, female. Scales: 5–6, 0.5mm; 7, 1mm.
FIGURES 1–4 in A new Cocos- eating moth of Acria Stephens, 1834 (Lepidoptera, Peleopodidae) from China, with descriptions of its adult, larva and pupa
FIGURES 1–4. Adults of Acria cocophaga sp. nov. 1, male (paratype); 2, female (paratype); 3, labial palpus; 4, antenna. Scales: 1–2, 1mm; 3–4, 0.1mm.
FIGURES 14–18 in A new Cocos- eating moth of Acria Stephens, 1834 (Lepidoptera, Peleopodidae) from China, with descriptions of its adult, larva and pupa
FIGURES 14–18. Larva of Acria cocophaga sp. nov. (head and proleg). 14, head (lateral view); 15, head (anterior view); 16, mandible; 17, labrum; 18, crochets of proleg.
FIGURE 8 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 8. Nuuanu titaseyi sp. nov., holotype male, AM P.90056, 3.25 mm, western side of Hawkesbury Island, Torres Strait, Queensland, Australia (scales represent 0.1 mm).
FIGURE 6 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 6. Nuuanu stuckeyorum sp. nov., holotype male, AM P.90058, 4.9 mm, off West Island Jetty, Cocos (Keeling) Islands, Indian Ocean (scales represent 0.1 mm).
FIGURE 7 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 7. Nuuanu stuckeyorum sp. nov., holotype male, AM P.90058, 4.9 mm, off West Island Jetty, Cocos (Keeling) Islands, Indian Ocean (scales represent 0.1 mm).
FIGURE 3 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 3. Nuuanu quintalana sp. nov., holotype male, AM P.90042, 3.7 mm, Fig Valley Reef, Norfolk Island, Tasman Sea (scales represent 0.1 mm, except telson 0.05 mm).
FIGURE 4 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 4. Nuuanu quintalana sp. nov., paratype female, AM P.90043, 3.2 mm, Fig Valley Reef, Norfolk Island, Tasman Sea (scales represent 0.1 mm).
FIGURE 2 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 2. Nuuanu quintalana sp. nov., male, AM P.89312, 3.5 mm, Fig Valley Reef, Norfolk Island, Tasman Sea. SEM photographs: (A) head lateral view (scale 100 µm); (B) pereopod 7 lateral view (scale 100 µm); (C) whole animal lateral view (scale 100 µm); (D) whole animal dorsal view (scale 200 µm); (E) telson and uropod 3 dorsal view (scale 100 µm); and (F) urosome dorsal view (scale 100 µm).
FIGURE 5 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 5. Nuuanu stuckeyorum sp. nov., male, AM P.89311, 5.2 mm, off West Island Jetty, Cocos (Keeling) Islands, Indian Ocean. SEM photographs: (A) head lateral view (scale 100 µm); (B) pereopod 7 lateral view (scale 200 µm); (C) whole animal lateral view (scale 200 µm); (D) whole animal dorsal view (scale 100 µm); (E) telson and uropod 3 dorsal view (scale 100 µm); and (F) urosome dorsal view (scale 100 µm).
FIGURE 1 in New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands
FIGURE 1. Nuuanu merringanee (Barnard, J.L. 1974) male, AM P.90040, 3.8 mm, Jackson Island, Cape Leveque, Western Australia (scales represent 0.1 mm).
FIGURE 5. Cocotanais puravida n. g., n in A new genus and species of Leptocheliidae (Crustacea: Peracarida: Tanaidacea) from Isla del Coco (Costa Rica)
FIGURE 5. Cocotanais puravida n. g., n. sp., male. A, allotype, habitus, dorsal view. B, habitus, lateral view. C, antennule. D, antenna.
FIGURE 4. Cocotanais puravida n. g., n in A new genus and species of Leptocheliidae (Crustacea: Peracarida: Tanaidacea) from Isla del Coco (Costa Rica)
FIGURE 4. Cocotanais puravida n. g., n. sp., female. A, Pereopod 1. B, Pereopod 2. C, pereopod 4. D, pereopod 6. E, uropod. F, pleopod.
FIGURE 3. Cocotanais puravida n. g., n in A new genus and species of Leptocheliidae (Crustacea: Peracarida: Tanaidacea) from Isla del Coco (Costa Rica)
FIGURE 3. Cocotanais puravida n. g., n. sp., female. A, labrum. B, left mandible. C, right mandible. D, labium. E, maxillule. F, maxilliped. G, cheliped. H, close-up of the same. I, detail of the cutting edge. J, detail of the inner face spine row.
FIGURE 7. Cocotanais puravida n. g., n in A new genus and species of Leptocheliidae (Crustacea: Peracarida: Tanaidacea) from Isla del Coco (Costa Rica)
FIGURE 7. Cocotanais puravida n. g., n. sp., male. A, First pereopod and close-up of propodus and dactylus. B, pereopod 2. C, D, pereopods 5, 6.
FIGURE 2. Cocotanais puravida n. g., n in A new genus and species of Leptocheliidae (Crustacea: Peracarida: Tanaidacea) from Isla del Coco (Costa Rica)
FIGURE 2. Cocotanais puravida n. g., n. sp., female. A, holotype, habitus, dorsal view. B, holotype, habitus, lateral view. C, antennule. D, antenna.
FIGURE 1 in A new genus and species of Leptocheliidae (Crustacea: Peracarida: Tanaidacea) from Isla del Coco (Costa Rica)
FIGURE 1. Location of the 27 sampling stations around Isla del Coco, Costa Rica. April 2010. The thirteen stations where specimens were collected are represented with a circle in accordance with the abundance (numbers in white). The stations where the species was absent are represented with an X.
FIGURE 7 in Johngarthia cocoensis, a new species of Gecarcinidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura) from Cocos Island, Costa Rica
FIGURE 7. Geographical distribution (partly adapted from Türkay,1974), (●) Gecarcoidea lalandii; (Ο) Johngarthia cocoensis n. sp.; (□) Johngarthia malpilensis; (․) Johngarthia planatus; main sea currents (modified from McPhaden et al. 1998): (NEC) North Equatorial Current; (NECC) North Equatorial Countercurrent; (SEC) South Equatorial Current; (CRC) Costa Rica Coastal Current.
FIGURE 5 in Johngarthia cocoensis, a new species of Gecarcinidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura) from Cocos Island, Costa Rica
FIGURE 5. Frontal view (P, pit at orbital angle; M, merus of third maxilliped; OL, outer apical lobe of M; IL, inner apical lobe of M), A, Gecarcoidea lalandii, female, LACM, JWK-326 (Marshall Islands, Enewetak Atoll, Igurin I.); B, Johngarthia cocoensis n. sp., paratype, female, MZ-UCR-623-01 (Manuelita I., Costa Rica); C, Johngarthia malpilensis, female, LACM (Malpelo I., Colombia); D, Johngarthia planatus, female, LACM (Clipperton I., Mexico).
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.