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62 results for “Diadema”
FIGURES 1–3 in Cordulegaster virginiae sp. nov. from Mexico, including a comparison with C. diadema Selys, 1868, and a redescription of its larva (Odonata: Cordulegastridae)
FIGURES 1–3. Cordulegaster virginiae sp. nov., holotype male. 1) Adult; 2) Detail of femur and tibiae, left lateral view; 3) S10 and caudal appendages, dorsal view.
FIGURES 4–6 in Cordulegaster virginiae sp. nov. from Mexico, including a comparison with C. diadema Selys, 1868, and a redescription of its larva (Odonata: Cordulegastridae)
FIGURES 4–6. Details of the morphology of Cordulegaster virginiae sp. nov. 4) Ventral view of accessory genitalia; 5) hamuli and anterior lamina, lateral view; 6) Hamuli dissected, lateral view.
FIGURES 10–11 in Cordulegaster virginiae sp. nov. from Mexico, including a comparison with C. diadema Selys, 1868, and a redescription of its larva (Odonata: Cordulegastridae)
FIGURES 10–11. Details of the morphology of Cordulegaster diadema. 10) Lateral view of hamuli and genital ligula: a, male from Puebla; b, right anterior hamule (lectotype male of C. godmani from Costa Rica, NHMUK); c, right anterior hamule (male C. diadema from Bambito, Panama). 11) Ventral view of accessory genitalia: a, male from Puebla; b, anterior hamuli (lectotype male of C. godmani from Costa Rica, NHMUK); c, anterior hamuli (male C. diadema from Bambito, Panama). Photos of figures 10b, 11b by C. Bota-Sierra; 10c, 11c by R.W. Garrison.
FIGURE 2 in Needle in a haystack-genetic evidence confirms the expansion of the alien echinoid Diadema setosum (Echinoidea: Diadematidae) to the Mediterranean coast of Israel
FIGURE 2 Phylogenetic relationships of the genus Diadema. Superimposed Maximum Likelihood and Bayesian Inference phylogenetic trees based on COI sequences representing all extant species of Diadema, rooted by Astropyga radiata. Major clades were collapsed. The clades including Mediterranean Diadema sequences are highlighted in yellow (D. setosum clade b). Supporting values (> 0.9 posterior probabilities and> 70% ML bootstrap values) are shown above the nodes (before and after the slash, respectively). ML bootstrap support was calculated from 1000 replications and BI posterior probabilities from 7.5 million generations (after burn-in). GenBank accession numbers of the corresponding sequences used in the analysis are given in Supplementary materials Tab. S2.
FIGURE 1 in Needle in a haystack-genetic evidence confirms the expansion of the alien echinoid Diadema setosum (Echinoidea: Diadematidae) to the Mediterranean coast of Israel
FIGURE 1 Images of live Diadema setosum in the field: A) from Tel Aviv, Israel (32.086358°N, 34.763918°E), on 10.11.2016, at a depth of 6-8 m (Photograph: Adi Gvir; specimen not collected). B) from Tel Aviv, Israel (32.083633°N, 34.762836°E), on 17.06.2017, at depth of 3.5 m (a single spine was retrieved from specimen, deposited at the Steinhardt Museum of Natural History, Tel Aviv University under voucher number SMNH_Ec_25635). Scanning electron microscope images of D. setosum spines from specimen shown in B. C) longitudinal view showing the characteristic diadematoid verticillation; D) transverse section showing the axial cavity and solid wedges of the spine. See also Supplementary materials Fig. S3.
FIGURE 36. Plumarella diadema. Holotype, USNM 1078187 in <strong>A revision of the genus <em>Thouarella</em> Gray, 1870 (Octocorallia: Primnoidae), including an illustrated dichotomous key, a new species description, and comments on <em>Plumarella</em> Gray, 1870 and <em>Dasystenella</em>, Versluys, 1906</strong>
FIGURE 36. Plumarella diadema. Holotype, USNM 1078187: a) 6 cm colony; d) inner and e) outer surface of bifurcate marginal. USNM 98089: b) close up of polyps; c) pinnate colony form, 10 cm; c) 10 cm pinnate colony form. Photos by SJ.
Diadema Map
<p>Diadema antillarium survey sites around the island of St. John, as studied by Renee Godard from 2017-2023</p>
Data from: A 3,000 year record of Caribbean reef urchin communities reveals causes and consequences of long-term decline in Diadema antillarum
Open the record for dataset details and reuse information.
Data from: The sea urchin Diadema africanum uses low resolution vision to find shelter and deter enemies
Many sea urchins can detect light on their body surface and some species are reported to possess image-resolving vision. Here we measure the spatial resolution of vision in the long-spined sea urchin Diadema africanum, using two different visual responses: a taxis towards dark objects and an alarm response of spine-pointing towards looming stimuli. For the taxis response we used isoluminant visual stimuli to discriminate spatial vision from phototaxis. Individual animals were placed in the centre of a cylindrical arena under bright down-welling light, with stimuli of varying angular dimensions placed on the arena wall at pseudorandom directions from the centre. We tracked the direction of movement of individual animals in relation to the stimuli to determine whether the animals oriented towards the stimulus. We found that D. africanum responds by taxis towards isoluminant stimuli with a spatial resolution of 38° - 89°, assuming a contrast threshold of 10%. The visual acuity of the alarm response of D. africanum was tested by exposing animals to different sized dark looming and appearing stimuli on a monitor. We found that D. africanum displays a spine-pointing response to appearing black circles with a spatial resolution of 60° - 116°, assuming the same contrast threshold as above.
FIGURE 11 in The Ophryotrocha diadema group (Annelida: Dorvilleidae), with the description of two new species
FIGURE 11. Age-specific variation in time intervals between consecutive spawnings.
FIGURE 28. Diadema setosum A. Map showing distribution. B in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 28. Diadema setosum A. Map showing distribution. B. Live juvenile specimen (KwaZulu-Natal).
FIGURE 27. Diadema savignyi A. Map showing distribution. B in Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa
FIGURE 27. Diadema savignyi A. Map showing distribution. B. Live specimen (KwaZulu-Natal).
FIGURE 30. Lytorhynchus diadema from 37 in Atlas of the Reptiles of Libya
FIGURE 30. Lytorhynchus diadema from 37 km south of Gadamis, Nalut, Tripolitania, Libya, 2008. Photo © Roberto Sindaco.
FIGURE 5. Diadema spp. A. D. setosum. B. D in New Ecological Observations and Occurrence for Asteroidea and Echinoidea in Hong Kong
FIGURE 5. Diadema spp. A. D. setosum. B. D. savignyi. Photographer: Sam King Fung Yiu.
Figure 6 from: Chow S, Konishi K, Mekuchi M, Tamaki Y, Nohara K, Takagi M, Niwa K, Teramoto W, Manabe H, Kurogi H, Suzuki S, Ando D, Jinbo T, Kiyomoto M, Hirose M, Shimomura M, Kurashima A, Ishikawa T, Kiyomoto S (2016) DNA barcoding and morphological analyses revealed validity of Diadema clarki Ikeda, 1939 (Echinodermata, Echinoidea, Diadematidae). ZooKeys 585: 1-16. https://doi.org/10.3897/zookeys.585.8161
Figure 6 - Neighbor-joining phylogenetic tree drawn using from COI sequence data. Bootstrap support (>50%) after 1,000 replications is shown at each node. Italic accession numbers with dagger (AY012732, AY012733, AY012742–AY012747) are from Lessios et al. (2001) and red accession numbers with asterisk (AB900024, AB909927, AB909929–AB909931, AB909933–AB909935, AB909942, AB909945, AB909947, AB909949, AB909953, AB909955, AB909957) are from Chow et al. (2014).
Figure 2 from: Chow S, Konishi K, Mekuchi M, Tamaki Y, Nohara K, Takagi M, Niwa K, Teramoto W, Manabe H, Kurogi H, Suzuki S, Ando D, Jinbo T, Kiyomoto M, Hirose M, Shimomura M, Kurashima A, Ishikawa T, Kiyomoto S (2016) DNA barcoding and morphological analyses revealed validity of Diadema clarki Ikeda, 1939 (Echinodermata, Echinoidea, Diadematidae). ZooKeys 585: 1-16. https://doi.org/10.3897/zookeys.585.8161
Figure 2 - Underwater aboral view of phenotype I of Diadema-sp, KPM-NJL000035, original specimen number is AT1.
Figure 5 from: Chow S, Konishi K, Mekuchi M, Tamaki Y, Nohara K, Takagi M, Niwa K, Teramoto W, Manabe H, Kurogi H, Suzuki S, Ando D, Jinbo T, Kiyomoto M, Hirose M, Shimomura M, Kurashima A, Ishikawa T, Kiyomoto S (2016) DNA barcoding and morphological analyses revealed validity of Diadema clarki Ikeda, 1939 (Echinodermata, Echinoidea, Diadematidae). ZooKeys 585: 1-16. https://doi.org/10.3897/zookeys.585.8161
Figure 5 - Aboral view (A) and enlarged view of a naked space of the interambulacral area (B) in a reference dried specimen of Diadema found in Ikeda's collection. KMNH IvR 500788, original specimen No. is IK3. White streak-like remnant can be seen (A, B), and the outer and inner series of primary tubercles initiated on the 3rd and 5th coronal plates, respectively (B). Scales bars = 20 mm (A) and 10 mm (B).
Figure 3 from: Chow S, Konishi K, Mekuchi M, Tamaki Y, Nohara K, Takagi M, Niwa K, Teramoto W, Manabe H, Kurogi H, Suzuki S, Ando D, Jinbo T, Kiyomoto M, Hirose M, Shimomura M, Kurashima A, Ishikawa T, Kiyomoto S (2016) DNA barcoding and morphological analyses revealed validity of Diadema clarki Ikeda, 1939 (Echinodermata, Echinoidea, Diadematidae). ZooKeys 585: 1-16. https://doi.org/10.3897/zookeys.585.8161
Figure 3 - Underwater aboral views of four phenotypes (A–E) and color variants of phenotype I (F) of Diadema-sp, Diadema setosum (G), and Diadema savignyi (H). A KPM-NJL000036, original specimen number is AT2 designated as phenotype II B KPM-NJL000037, original specimen number is AT3 designated as phenotype III C KPM-NJL000039, original specimen number is AR59 designated as phenotype IV D KPM-NJL000038, original specimen No. is AR54 designated as phenotype V E KPM-NJL000040, original specimen No. is AR70 designated as phenotype V F color variant of phenotype I observed at Haida-ura in Mie Prefecture (Figure 1E) photographed by T. Ishikawa G Diadema setosum (DST2 in Chow et al. (2014)) H Diadema savignyi (DSV23 in Chow et al. (2014)).
Figure 1 from: Chow S, Konishi K, Mekuchi M, Tamaki Y, Nohara K, Takagi M, Niwa K, Teramoto W, Manabe H, Kurogi H, Suzuki S, Ando D, Jinbo T, Kiyomoto M, Hirose M, Shimomura M, Kurashima A, Ishikawa T, Kiyomoto S (2016) DNA barcoding and morphological analyses revealed validity of Diadema clarki Ikeda, 1939 (Echinodermata, Echinoidea, Diadematidae). ZooKeys 585: 1-16. https://doi.org/10.3897/zookeys.585.8161
Figure 1 - Localities where field observation and sampling of Diadema were performed. See Table 1 for detailed information. A Arasaki (Kanagawa Prefecture) B Tateyama (Chiba) C Mera (Shizuoka) D Shikine-jima (Tokyo) E Haida-ura (Mie) F Kushimoto (Wakayama) G Hachijo-jima (Tokyo) H Uchidomari (Ehime) I Iki-no-shima (Nagasaki) J Ojika (Nagasaki) K Mie (Nagasaki) L Shibushi (Kagoshima) M Kaimon (Kagoshima) N Tanega-shima (Kagoshima) O Yaku-shima (Kagoshima) P Amami Ohshima (Kagoshima) Q Ogasawara (Tokyo) R Motobu (Okinawa) S Sesoko (Okinawa) T Ishigaki-jima (Okinawa). Diadema setosum was observed in all areas surveyed. No Diadema savignyi but Diadema-sp were observed at localities with yellow circle, Both Diadema savignyi and Diadema-sp were observed at localities with white circle, No Diadema-sp but Diadema savignyi were observed at localities with red circle.
Figure 4 from: Chow S, Konishi K, Mekuchi M, Tamaki Y, Nohara K, Takagi M, Niwa K, Teramoto W, Manabe H, Kurogi H, Suzuki S, Ando D, Jinbo T, Kiyomoto M, Hirose M, Shimomura M, Kurashima A, Ishikawa T, Kiyomoto S (2016) DNA barcoding and morphological analyses revealed validity of Diadema clarki Ikeda, 1939 (Echinodermata, Echinoidea, Diadematidae). ZooKeys 585: 1-16. https://doi.org/10.3897/zookeys.585.8161
Figure 4 - Preserved specimen of phenotypes I (A), II (B), III (C) and V (D) of Diadema-sp, corresponding to AT1 (KPM-NJL000035) in Figure 2, and AT2, AT3 and AR54 (KPM-NJL000036‒KPM-NJL000038) in Figures 3A, B and D, respectively. All scale bars = 10 mm.
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