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Fig. 5 in Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters

Fig. 5. Dicyema petalocephalum sp. nov., drawn from syntype specimens on slide NSMT-Me-48: a, nematogen, entire; b, rhombogen, entire; c, d, nematogen, anterior region; e, f, rhombogen, anterior region; g, h, vermiform embryo within axial cell, cilia omitted (g), optical section (h); i, infusorigen; j–l, infusoriform embryos, dorsal view (j; cilia omitted), ventral view (k; cilia omitted), sagittal section (l). Scale bars: 200 µm in a, b, 10 µm in c–k.

Fig. 6 in Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters

Fig. 6. Dicyemennea mcconnaugheyi sp. nov., photographs of syntype specimens on slide NSMT-Me-49: a, b, h–j, nematogen, anterior region (a, b, h), middle region (i), posterior region (i, j), note that the verruciform are found in each peripheral cell (h–j); c, vermiform embryos within axial cell; d, f, rhombogen, anterior region; e, agamete, note that a large cell is fusiform in shape; g, infusorigen; k, l, infusoriform embryos, sagittal section (k), horizontal section (l). Scale bars: 10 µm.

Fig. 2 in Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters

Fig. 2. Dicyema cryptocephalum sp. nov., photographs of syntype specimens on slide NSMT-Me-47: a, nematogen, entire; b, nematogen, anterior region; c, d, nematogen, anterior end; e, vermiform embryos within axial cell; f, rhombogen, anterior region; g, h, infusoriform embryos, sagittal section (g), horizontal section (h); i, infusorigen. Scale bars: 50 µm in a, 5 µm in b–i.

Fig. 3 in Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters

Fig. 3. Dicyema cryptocephalum sp. nov., drawn from syntype specimens on slide NSMT-Me-47: a, nematogen, entire; b, rhombogen, entire; c–e, nematogen, anterior region; f, g, vermiform embryo within axial cell, cilia omitted (f), optical section (g); h, rhombogen, anterior region; i, infusorigen; j–l, infusoriform embryos, dorsal view (j; cilia omitted), ventral view (k; cilia omitted), sagittal section (l). Scale bars: 100 µm in a, b, 10 µm in c–k.

opencc-by-4.0Jun 2022View details →

Octopus bimaculoides genome assembly

To facilitate identification of molecular cell types in the Octopus bimaculoides optic lobe, we conducted high fidelity long-read genomic and transcriptomic sequencing. Here, we provide open access to these datafiles, which resulted in a single-cell atlas of the O. bimaculoides visual system (<a href="https://doi.org/10.1016/j.cub.2022.10.015" target="_blank" rel="noopener noreferrer">https://doi.org/10.1016/j.cub.2022.10.015</a>). Below, we include a new genome assembly and annotation, phylogenetic trees for genes referenced in the manuscript, Cell Ranger outputs, and R scripts and files for Seurat cluster analysis. Raw single-cell sequence files are deposited to NCBI SRA at BioProject ID PRJNA854179. If any of these files are used, we ask that the paper is cited.

opencc-zeroJun 2024View details →

Dataset: Coda Octopus Group, Inc. (CODA) Stock Performance

This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.

opencc-by-4.0Apr 2018View details →

Review of Recent Trends in Measuring the Computing Systems Intelligence-Figure 3. Intelligence of different living creature (accessed 01.11.2017). 3.1. A painting elephant (http://www.wittyfacts.com/suda-the-painting-elephant/); 3.2. A common octopus (https://en.wikipedia.org/wiki/Octopus). 3.3. An African grey parrot (https://en.wikipedia.org/wiki/Grey_parrot)

Many observations proved that octopus species have an impressive spatial learning capacity, advanced navigational abilities, and advanced predatory techniques. The dexterity is important for using and manipulating tools. Zullo, Sumbre, Agnisola, Flash, & Hochner, (2009) studied the successful dexterity of octopuses. They have highly sensitive suction cups and prehensile arms, squid, and cuttlefish. This allows them to hold and manipulate objects. The motor skills of octopuses (Figure 3.2) do not seem to depend upon mapping their body. Some species of parrots are able to mimic very well the human speech. There were performed many studies with parrots that shown that some individuals are able to associate words with their meanings. Another observed ability is to form simple sentences. It has been shown that some grey parrots perform at the cognitive level of a 3-year-old child in some tasks. Pepperberg (2006) proved that some parrots can count up to 6. Figure 3.3 presents a frequently studied species of parrots, called African grey parrot.

Fig. 6 in Linking phenotypic to genotypic metacestodes from Octopus maya of the Yucatan Peninsula

Fig. 6. Phylogenetic tree based on the Maximum Likelihood analysis of the species of the Order Onchoproteocephalidea found in Octopus maya constructed on partial large subunit ribosomal gene (28S) (likelihood = – 9067.566753). Bootstrap support values for ML are provided at the nodes; ex = host; the stage of development of the cestode in parentheses.

Fig. 4 in Linking phenotypic to genotypic metacestodes from Octopus maya of the Yucatan Peninsula

Fig. 4. Phylogenetic tree based on the Maximum Likelihood (ML) analysis of the species of the Order Trypanorhyncha found in Octopus maya constructed on partial large subunit ribosomal gene (28S) (likelihood = – 15209.189111). Bootstrap support values for ML are provided at the nodes; ex = host; the stage of development of the cestode in parentheses.

Fig. 3 in Linking phenotypic to genotypic metacestodes from Octopus maya of the Yucatan Peninsula

Fig. 3. Scanning electron microscopy of whole specimens and the detail of scolecis of the cestodes found as parasites of Octopus maya. Trypanorhyncha (A–L): A-C Eutetrarhynchus sp.; D-F Kotorella pronosoma; G-I Nybelinia sp.; J-L Prochristianella sp. Onchoproteocephalidea (M–R): M-N Acanthobothrium sp. O–P Phoreiobothrium sp.; Q-R Prosobothrium sp.

Fig. 2 in Linking phenotypic to genotypic metacestodes from Octopus maya of the Yucatan Peninsula

Fig. 2. Schematic drawings and photographs of the stained specimens of cestode parasitizing Octopus maya. Trypanorhyncha (A–D): A- Eutetrarhynchus sp.; B. Kotorella pronosoma; C- Nybelinia sp.; D- Prochristianella sp. Onchoproteocephalidea (E–G): E- Acanthobothrium sp.; F- Phoreiobothrium sp.; G- Prosobothrium sp.- Abbreviations: as = apical sucker; bot = bothridia cc = calcareous corpuscles; lo = loculi; pb = pars bulbosa; pbo = pars bothrialis; ppb = pars postbulbosa; ps = pedunculus scolecis; pv = pars vaginalis; sc = scolex; sp = septa; st = strobilo; vel = velum.

Fig. 5 in Linking phenotypic to genotypic metacestodes from Octopus maya of the Yucatan Peninsula

Fig. 5. Phylogenetic tree based on the Maximum Likelihood analysis of the species of the Order Trypanorhyncha found in Octopus maya constructed on partial small subunit ribosomal gene (18S) (likelihood = – 7987.787948). Bootstrap support values for ML are provided at the nodes; ex = host; the stage of development of the cestode in parentheses.

opencc-by-4.0Oct 2024View details →

Intra-egg oxygen dissolved in Octopus maya embryos

Those data show, for the first time, oxygen concentration levels in the perivitelline liquid of Octopus maya embryos. Data are shown as a percentage of oxygen saturation, measured at 24°C, using a Needle-type oxygen microsensor (Loligo Systems, Denmark). The sensor was placed in an automated micromanipulator (PreSense, Germany), and the eggs were placed in a supporting device at 38° of inclination. In such form, the sensor was inserted in the perivitelline liquid, registering the oxygen dissolved inside the eggs. The final oxygen level was recorded between one and three min after the sensor insertion. Data of oxygen dissolved during embryo development were grouped as blastulation, organogenesis, activation, and growth phases. A negative power curve was constructed for the relationship between oxygen dissolved in the perivitelline liquid and embryo development

opencc-by-4.0May 2016View details →

Fig. 1 in Octopus sinensis d'Orbigny, 1841 (Cephalopoda: Octopodidae): Valid Species Name for the Commercially Valuable East Asian Common Octopus

Fig. 1. Ventral view of a mature male specimen of Octopus sinensis (NSMT Mo 85658), illustrating the paler ventral surface (cf. dorsal surface of the same specimen visible in Figs 2 and 3) and the size and shape of the funnel (F, held in place with a piece of white cord). A sample (S) of muscle tissue was removed prior to fixation, leaving a circular wound just anterior to the funnel. Fig. 2. Dorsal view of the specimen in Fig. 1, showing the difference in lengths of arms 2 and 3 (longer, ending within the region labelled 'Arms 2 and 3' bracketed to the leπ) versus 1 and 4 (clearly shorter, ending within the adjacent bracketed region labelled 'Arms 1 and 4'). The longer arms include arm R3 (the hectocotylus, H), which (typically much shorter than its counterpart, L3) is only just a little longer than arm pairs 1 and 4 (cf. Table 1, and OAI in Table 2). Note also the relative size and shape of the head, body and arms, and the rugose texture caused by the fixed appearance of the patch-and-groove topology of the skin. Fig. 3. View from the right side (body to leπ; arms to right) of the specimen in Figs 1 and 2. The funnel (F) was fixed in an unusual position (here seen pointing ventrally, perpendicular to the main body axis) as a result of damage following removal (before fixation) of a tissue sample (S) for molecular analysis (cf. Fig. 1). The broad extent of the mantle opening can be seen ventrally. Dorsally there is a large, contracted posterodorsal papilla (Ppd) above the right eye, with a smaller one anterodorsally (Pad). The anterodorsal papilla typically is not obvious except in well-fixed specimens. Fig. 4. An example of the appearance of the oral surface of a male Octopus sinensis to show the position of specially enlarged suckers on arms 2 and 3 of each side (most obvious on arms 2, as indicated: suckers #12 and 13 on the leπ, and #13 and 14 on the right). Anterior of animal (Ant.) is to the leπ, so the leπ arms are in the upper half of the figure and the right arms in the lower half. (Neotype specimen NSMT Mo 85659). Fig. 5. End of arm R3 of the specimen in Figs 1–3, showing the robust spermatophore groove (SGr; cf. Fig. 2, H) and small ligula (L). Fig. 6. Diagram of the tip of arm R3 of Octopus sinensis (lot NSMT Mo 85660 specimen IGG 318, ML 168 mm), illustrating the form of the ligula in more detail. Note modest calamus (Cal.) nestled in the hilum at the base of the ligula, and protuberance (Pr.) on the anterior side closely apposed to the region at the end of the spermatophore groove (SGr), covering the base of both ligula and calamus. (Line drawing by Aki Hamamoto). Fig. 7. Diagram of the tip of arm R3 of Octopus vulgaris specimen BMNH 98.5.21.346 (ML 96 mm), showing that the form and size of the ligula are similar to those of the ligula of O. sinensis (as shown in Figs 5 and 6). (Line drawing by Aki Hamamoto)

Oxygen and temperature data from Octopus Garden studies by Barry et al

This is a compilation of data from temperature and oxygen sensors coupled to CTDs or logging thermistors, which were deployed for periods of 3-12 month at the Octopus Garden, at 3200 m depth  near the base of Davidson Seamount, between 2019 and 2021.  Specific locations require consultation with the author.

opencc-zeroJan 2021View details →

Abalone fishergirl wrestling with an octopus

Netsuke - Abalone fishergirl wrestling with an octopus by Ransai, 19th C CE, now in the collection of the Minneapolis Institute of Art. [More information here](https://collections.artsmia.org/art/30448/abalone-fishergirl-wrestling-with-an-octopus-ransai) Source: Objaverse 1.0 / Sketchfab

opencc-byApr 2022View details →

octopus salad (Food scan)

3D photogrammetry scan of a traditional portugese dish - octopus salad. 3D asset ready for your 3D visualisation / game scene. Pbr textures generated with scan software. Source: Objaverse 1.0 / Sketchfab

opencc-zeroMay 2019View details →

Netsuke - fisherman and octopus by Kosen

Ivory *Fisherman carrying an octopus over his shoulder* by Kosen, 19th C CE, now in the collection of the Minneapolis Institute of Art. More information about the object here: https://collections.artsmia.org/art/30458/fisherman-carrying-an-octopus-over-his-shoulder-kosen Model built in PhotoScan, and cleaned up in Meshmixer and Blender. Source: Objaverse 1.0 / Sketchfab

opencc-by-4.0Jun 2022View details →

Genetic monitoring on the world's first MSC eco-labeled common octopus (O. vulgaris) fishery in western Asturias, Spain

Allele frequencies file containing: <ul> <li>15 populations</li> <li>13 microsatellite markers</li> </ul> Populations: <ul> <li>21PS: Pasaia (Basque country, Spain). Fishery season (FS): 2020-21</li> <li>18RB: Ribadesella (Asturias, Spain). FS: 2017-18</li> <li>21RB: Ribadesella (Asturias, Spain). FS: 2020-21</li> <li>18CU: Cudillero (Asturias, Spain). FS: 2017-18</li> <li>21CU: Cudillero (Asturias, Spain). FS: 2020-21</li> <li>07PV: Puerto de Vega (Asturias, Spain). FS: 2006-07</li> <li>18PV: Puerto de Vega (Asturias, Spain). FS: 2017-18</li> <li>21PV: Puerto de Vega (Asturias, Spain). FS: 2020-21</li> <li>18TP: Tapia de Casariego (Asturias, Spain). FS: 2017-18</li> <li>21TP: Tapia de Casariego (Asturias, Spain). FS: 2020-21</li> <li>21BU: Bueu (Galicia, Spain). FS: 2020-21</li> <li>07OL: Olhão (Algarve, Portugal). FS: 2006-07</li> <li>21OL: Olhão (Algarve, Portugal). FS: 2020-21</li> <li>21SA: San Andrés (Canary Islands, Spain). FS: 2020-21</li> <li>21BC: Barcelona (Catalonia, Spain). FS: 2020-21</li> </ul> Microsatellite markers (GenBank accession number): OCT08 (AF197132); VULG15 (LC003035); VULG14 (LC003034); VULG07 (LC003028); OVUL10 (JN579699); VULG12 (LC003032); VULG13 (LC003033); VULG06 (LC003027); OVUL09 (JN579698); VULG04 (LC003026); OVUL08 (JN579697); OV10 (AF197134); VULG10 (LC003030).