Find research datasets worth reusing

Fig. 8 in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 8 Reproductive system and eggs of P. paradoxus. a, c 3D reconstructions. a Relative position of the organ system, right view. c Dorsolateral view. b Schematic drawing (not to scale), arrows indicate the path of the zygote (white circle), allosperm (white square), autosperm (black square) and oocyte (black circle). d Egg masses. e Eggs containing veliger larvae. ag atrial gland, alg albumen gland, am ampulla, at atrium, e egg, gf female gonad, gm male gonad, gs gelatinous substance, hd hermaphroditic duct, ls larval shell, mg membrane gland, mug mucus gland, od oviduct, p penis, pr prostate, rs receptaculum seminis, v velum, va vagina, vd vas deferens, vl veliger larva

Fig. 5 in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 5 Jaws and radula of P. paradoxus. a, b Light- microscopic images, dorsal view. c–f Scanning electron microscopic images, dorsal view. a Position of jaws and radula in the head with statocysts and eyes. b Jaws and radula. c–e Jaws with depressions, arrows indicating the not denticulated part of the jaws. f Rhachidian tooth with central cusp, lateral denticles, and lateral tooth. ccp central cusp, cr cuticular ring, d depression, ey eye, j jaw, ld lateral denticle, lt lateral tooth, r radula, sc statocyst

Fig. 2 in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 2 Central nervous system (CNS) of P. paradoxus. a, b 3D reconstructions. a Postpharyngeal position of the organ system, right view. b Dorsal view. c–f Histological cross sections. c Cerebropleurovisceral ganglia and buccal mass, anterior facing to the right. d Pedal ganglia with nerves, statocyst and cerebral nerves, anterior facing upward. e Buccal ganglia with nerve and eye, asterisk marks the cerebropleuro-pedal connective, anterior facing upward. f Buccal commissure, anterior facing to the right. bcm buccal commissure, bg buccal ganglion, bn buccal nerve, cc cerebral commissure, cn cere- bral nerve, cs cnidosac, cpvg cerebropleurovisceral ganglion, cr cuticular ring, dg digestive gland, ey eye, i intestine, j jaw, mo mouth opening, oe esophagus, ot oral tube, pcm pedal commissure, pg pedal ganglion, ph pharynx, pn pedal nerve, r radula, sc statocyst, sgl salivary gland, st stomach

Fig. 4 in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 4 Digestive system of P. paradoxus (including cnidosacs and nematocysts). a 3D reconstruction, right view, slightly rotated. b–d Histological cross sections, anterior facing to the right. b Salivary glands, stomach, and digestive gland. c Pharynx with jaws and cuticular ring. d Cnidosac with nematocysts. ag atrial gland, cpvg cerebropleurovisceral ganglion, cr cuticular ring, cs cnidosac, dg digestive gland, ep epidermis, ey eye, i intestine, j jaw, ml muscular lining, mo mouth opening, nc nematocyst, oe esophagus, ot oral tube, ph pharynx, r radula, sgl salivary gland, st stomach

Fig. 1 in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 1 External morphology of Pseudovermis paradoxus. a-e Light-microscopic images of living specimens, dorsal view. a Curled-up specimen. b Extended specimen. c Extended specimen. d Head with buccal mass and sense organs. e Head and ovary. c ceras, dg digestive gland, ey eye, h head, j jaw, oc oocyte, r radula, sc statocyst

Fig. 3 in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 3 Schematic drawing of the central nervous system of P. paradoxus (not to scale). bcm buccal commissure, bg buccal ganglion, bn buccal nerve, cc cerebral commissure, cpvg cerebropleuralvisceral ganglion, ey eye, N1-N4 cerebral nerves, pcm pedal commissure, pg pedal ganglion, pn pedal nerve, sc statocyst

Fig. 7 in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 7 Circulatory and excretory systems of P. paradoxus. a 3D reconstruction, dorsolateral view (pericardium not to scale). b Histological cross section of kidney and renopericardioduct, anterior facing to the left. c–f Transmission electron microscopic images of kidney and pericardium. c Kidney, hemocoel and pericardium. d Kidney. e Pericardium and podocytes. f Podocytes with pedicels and diaphragmal slits. ds diaphragmal slit, ecm extracellular matrix, he hemocoel, i intestine, k kidney, mv microvilli, n nucleus of podocyte, nd nephroduct, nuc nucleus of nephrocyte, pc pericardium, pd pedicel, po podocyte, pr prostate, rpd renopericardioduct, va vagina

Fig. 6 Cnidosacs and nematocysts. a–d Transmission electron microscopic images, longitudinal sections. a in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)

Fig. 6 Cnidosacs and nematocysts. a–d Transmission electron microscopic images, longitudinal sections. a Overview of an entire cnidosac. b Close-up of nematocysts. c Intact nematocyst. d Degraded nematocyst and muscular lining. clw cell wall, cp cnidophage, cw capsule wall, dnc degraded nematocyst, fi filament thread, ha harpoon, inc intact nematocyst, lu lumen, m mitochondrion, ml muscular lining, mv microvilli, nc nematocyst, nu nucleus, vac vacuole

Fig. 3 in Insemination by a kiss? Interactive 3D-microanatomy, biology and systematics of the mesopsammic cephalaspidean sea slug Pluscula cuica Marcus, 1953 from Brazil (Gastropoda: Euopisthobranchia: Philinoglossidae)

Fig. 3 Schematic dorsal view of the reproductive system, anterior at right. am Ampulla, bc bursa copulatrix, bs bursa stalk, eg egg, fg1 albumen gland, fg2 membrane gland, fg3 thin portion of mucus gland, fg4 large portion of mucus gland, gd gonoduct, gof female genital

Fig. 2 in Insemination by a kiss? Interactive 3D-microanatomy, biology and systematics of the mesopsammic cephalaspidean sea slug Pluscula cuica Marcus, 1953 from Brazil (Gastropoda: Euopisthobranchia: Philinoglossidae)

Fig. 2 Schematic dorsal view of the central nervous system (CNS) and nerves, anterior at top. Roughly to scale except for length of pleuroparietal connectives. bg buccal ganglion, bcm buccal commissure, cbc cerebro-buccal connective, ccm cerebral commissure, cpg cerebropleural ganglion, ln labiotentacular nerve, lng accessory labial nerve ganglion, lpag left parietal ganglion, ncc nervus clypei-capitis, osg osphradial ganglion, orn oral nerve, pcm pedal commissure, pg pedal ganglion, rhga anterior accessory rhinophoral ganglion, rhgp posterior accessory rhinophoral ganglion, rhn rhinophoral nerve, rpag+supg combined supraintestinal and right parietal ganglion, sc statocyst, subg+vg combined subintestinal and visceral ganglion, vn visceral nerve, asterisk large 'blister' cell next to statocyst

Fig. 1 a–g in Insemination by a kiss? Interactive 3D-microanatomy, biology and systematics of the mesopsammic cephalaspidean sea slug Pluscula cuica Marcus, 1953 from Brazil (Gastropoda: Euopisthobranchia: Philinoglossidae)

Fig. 1 a–g Three-dimensional reconstructions of Pluscula cuica miR croanatomy. a External aspect of body showing body openings, right view. a' Dorsal view of body with the dorsum above body cavity and head shown transparent, showing inner organ systems, arrowheads short nerves innervating Hancock's organs, asterisk anterior end of seminal groove. b Live specimen, ca. 2 mm total length, dorsal view. c Anterior left view of the central nervous system, pedal nerves omitted, double asterisk: large cell next to statocyst, d Posterior part of reproductive system, dorsolateral right view, white asterisk branching point of gonoduct to female glands and ampulla. e Copulatory apparatus, ventral view, anterior towards left. f Oblique right view of digestive system, salivary glands omitted, double white asterisks positions of salivary duct openings and small glandular field inside pharyngeal lumen. g Oblique dorsolateral right view of pericardial complex and surrounding organs. am ampulla, an anus, ao aorta, au auricle, bc bursa copulatrix, bcm buccal commissure, bg buccal ganglion, bs bursa stalk, cbc cerebro-buccal commissure, ccm cerebral commissure, cns central nervous system, cpg cerebropleural ganglion, cop copulatory apparatus, cr putative crop, dg digestive gland, dgl lumen of digestive gland, eg egg, es esophagus, fg1–fg4 nidamental glands (proximal to distal), fgl lumen of nidamental glands, gd gonoduct, gof female genital opening, gom male genital opening, ho Hancock's organs, it intestine, kd kidney, ln labiotentacular nerve, lng accessory labiotentacular ganglia, lpag left parietal ganglion, mo mouth opening, mu muscular tube, ncc nervus clypei-capitis, np nephropore, oc oocyte, of ovarial follicles, ogl oral glands, om odontophore musculature, orn oral nerve, osg osphradial ganglion, osp osphradium, ot oral tube, pc pericardium, pe penis, pg pedal ganglion, ph pharynx, pr prostate, r distal part of radula, r' origin of radula, rhga/rhgp anterior/posterior accessory rhinophoral ganglion, rhn rhinophoral nerve, rpd renopericardial duct, sg seminal groove, sgl salivary gland, shd shell dimple, shr shell remnant, st statocyst, subg+vg combined subintestinal and visceral ganglion, supg +rpag combined supraintestinal and right parietal ganglion, ve ventricle, vn visceral nerve, ygd duct of yellow gland, ygl yellow gland, ygp opening of yellow gland. Bars a, a', d, f 250 μm; c, e, g 100 μm. Interactive version of this figure is available in the supplementary online material.

Fig. 5 a–f in Insemination by a kiss? Interactive 3D-microanatomy, biology and systematics of the mesopsammic cephalaspidean sea slug Pluscula cuica Marcus, 1953 from Brazil (Gastropoda: Euopisthobranchia: Philinoglossidae)

Fig. 5 a–f Semithin histological cross-sections of posterior body half. Dorsal side at top. a Overview at level of nidamental glands. b Detail of nidamental glands with interjected sperm package. c Ovarial follicles. e Most distal gonoduct and osphradium. f Yellow gland. g Caudal dorsal depression with shell 'remnant', in- sert: complete cross-section. am Ampulla, an anus, au auricle, bc bursa copulatrix, bs bursa stalk, dg digestive gland, dgl digestive gland lumen, eg egg, fg1 albumen gland, fg2 membrane gland, fg3 short limb of mucus gland, fg4 large limb of mucus gland, fgl female gland lumen, ft foot, gd gonoduct, it intestine, oc oocyte, of ovarial follicle, osp osphradium, pc pericardium, shd shell 'dimple', shr shell 'remnant', sg seminal groove, sp interjected sperm package, ve ventricle, ygd duct of yellow gland. Bars a, c 100 μm; b, d, g 50 μm; e, f 25 μm

Fig. 4 a–g in Insemination by a kiss? Interactive 3D-microanatomy, biology and systematics of the mesopsammic cephalaspidean sea slug Pluscula cuica Marcus, 1953 from Brazil (Gastropoda: Euopisthobranchia: Philinoglossidae)

Fig. 4 a–g Semithin histological cross-sections of anterior body half. dorsum, egl different types of epidermal glands, ft foot, gom male Dorsal side at top, in e: at right. a Level of mouth opening, showing genital opening, ho Hancock's organ, it intestine, ln labiotentacular lateral grooves. b Anterior part of CNS and copulatory organ. c Section nerve, lng accessory labiotentacular ganglion, mu strong muscular of CNS and copulatory organ posterior to b. d Detail of right Hanlining / muscular tube of copulatory organ, ogl oral gland, ot oral tube, cock's organ and its innervation. e Pharynx with muscular odontophore pe penis, ph pharynx, pn pedal nerves, pr prostate, rhga anterior and spread radula; asterisk patch of glandular cells. f Detail of pedal accessory rhinophoral ganglion, rhgp posterior accessory rhinophoral ganglion with statocyst and 'blister' cell (double asterisk). g Trunk-like ganglion, rhn rhinophoral nerve, sc statocyst, sgl salivary gland, vlg anterior end of intestine inside digestive gland lumen. bv blood vessel, visceral loop ganglia (sectioned at margins). Bars a 100 μm; b–e, g cbc cerebro-buccal connective, ccm cerebral commissure, cpg cerebro50 μm; f 25 μm pleuraganglion, dg digestive gland, dgl lumen of digestive gland, do

opennotspecifiedAug 2024View details →

FIGURE 2 in Caecum wakense: a new Caecidae (Gastropoda: Caenogastropoda) from Wake Atoll (Pacific Ocean)

FIGURE 2. Conceptual reconstruction of growth stages of Caecum wakense sp. nov.: A. Protoconch to teleoconch IV. B. Surface of teleoconchs I and II. C. Surface of teleoconchs III and IV. White dots indicate transition points.

Fig. 6 in Crossing the polar front-Antarctic species discovery in the nudibranch genus Tritoniella (Gastropoda)

Fig. 6 Schematic drawings of the male reproductive system showing vas deferens (vd) and penial papilla (pp). A, Tritoniella belli. B, T. gnocchi n. sp. C, T. prinzess n. sp., pp was attached to penial sheath

Fig. 14 in Crossing the polar front-Antarctic species discovery in the nudibranch genus Tritoniella (Gastropoda)

Fig. 14 Paratype of Tritoniella schoriesi n. sp. (ZSM 20110202–02). A, dorsal view. B, ventral view. C, lateral view. D, live picture. E, ventral view of the anterior part with velum

Fig. 8 in Crossing the polar front-Antarctic species discovery in the nudibranch genus Tritoniella (Gastropoda)

Fig. 8 Holotype of Tritoniella gnocchi n. sp. (SIO-BIC M13502). A, dorsal view. B, ventral view. C, lateral view. D, live picture. E, ventral view of the anterior part with velum

Fig. 5 in Crossing the polar front-Antarctic species discovery in the nudibranch genus Tritoniella (Gastropoda)

Fig. 5 Characteristic body parts of Tritoniella belli specimen ZSM 20090522 (A–D) and ZSM 20012253 (E–F). A, jaws. B, scanning electron micrograph (SEM) of the jaws showing masticatory border

Fig. 1 in Crossing the polar front-Antarctic species discovery in the nudibranch genus Tritoniella (Gastropoda)

Fig. 1 Map of the Southern Ocean with sampling stations across the Scotia and Weddell Seas depicted in Arc-GIS, colour-coded by species. Yellow circles: Tritoniella belli; green cross: Tritoniella gnocchi n. sp.; blue diamond: Tritoniella prinzess n. sp.; purple triangles: Tritoniella gnathodentata n. sp.; red squares: Tritoniella schoriesi n. sp.; orange stars: Tritoniella heideae n. sp.

Fig. 4 in Crossing the polar front-Antarctic species discovery in the nudibranch genus Tritoniella (Gastropoda)

Fig. 4 Specimens of Tritoniella belli ZSM 20090522 (but live picture). A, dorsal view. B, ventral view. C, lateral view. D, live picture of a specimen of T. belli from McMurdo Sound taken by Peter Brueggeman. E, ventral view of the anterior part with velum