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18 results for “box jellyfish”
Fig. 6 in Histomorphological comparison of testes in species of box jellyfish (Cnidaria; Cubozoa): does morphology differ with mode of reproduction and fertilization?
Fig. 6 Chiropsalmus quadrumanus (from North Carolina State, USA). a Live specimen (scale bar 4 cm) (Image courtesy of Bastian Bentlage). b Male gonad in cross-section stained with toluidine blue (TB) (scale bar 20 μm). c Male gonad in cross-section stained with periodic acid-Schiff + hematoxylin (PAS-H) (scale bar 50 μm). cl cilia, m mesoglea, p pedalia, r rhopalia, sc spermatocyte, sg spermatogonia, t tentacle, v velarium, vl vacuole
Fig. 4 in Histomorphological comparison of testes in species of box jellyfish (Cnidaria; Cubozoa): does morphology differ with mode of reproduction and fertilization?
Fig. 4 Tamoya cf. haplonema from New Jersey State (USA). a– d Male gonad in cross-section stained with hematoxylin-eosin (HE) (scale bars 50 μm). e Male gonad in cross-section stained with Gomori's trichrome + hematoxylin (TG-H) (scale bar 50 μm). f Male gonad in crosssection stained with Toluidine blue (TB) (scale bar 20 μm). g Male gonad in cross-section stained with HE (scale bar 20 μm). Arrows in b-f indicate rupture sites from which sperm are released. sc spermatocyte, sg spermatogonia, sp sperm
Fig. 2 in Histomorphological comparison of testes in species of box jellyfish (Cnidaria; Cubozoa): does morphology differ with mode of reproduction and fertilization?
Fig. 2 Morbakka virulenta from Okayama (Japan). a Live specimen (scale bar 10 cm) (Image courtesy of Sho Toshino). b Male gonad stained with periodic acid-Schiff + hematoxylin (PAS-H) (scale bar 50 μm). c Male gonad stained with Gomori's trichrome + hematoxylin (TG-H) (scale bar 20 μm). m mesoglea, nc nucleus, ncl nucle- olus, sg spermatogonia, sc spermatocyte, vl vacuole
Fig. 1 in Histomorphological comparison of testes in species of box jellyfish (Cnidaria; Cubozoa): does morphology differ with mode of reproduction and fertilization?
Fig. 1 Carybdea marsupialis male gonads from two different localities (Italy and Spain). a Live specimen from Spain (scale bar 2 cm) (Image courtesy of Eduardo Obis). b, c Male gonads from Italian specimen in cross-section stained with hematoxylin-eosin (HE). Material fixed in ethanol (scale bars 100 μm and 20 μm, respectively). d, f Male gonads from Spanish specimen in crosssection stained with Toluidine blue (TB), HE and Gomori's Trichrome + Hematoxylin (TGH), respectively (scale bars 50 μm, 50 μm and 20 μm, respectively). g gonad, m mesoglea, nc nucleus, p pedalia, ph phacellae, sc spermatocyte, sg spermatogonia, t tentacle, v velarium, vl vacuole
Fig. 3 in Histomorphological comparison of testes in species of box jellyfish (Cnidaria; Cubozoa): does morphology differ with mode of reproduction and fertilization?
Fig. 3 Tamoya haplonema male gonad from São Paulo State (Brazil). a Live specimen (scale bar 2,5 cm) (Image courtesy of Alvaro E. Migotto). b Male gonad in cross-section stained with hematoxylin-eosin (HE) (scale bar 50 μm). c Male gonad in cross-section stained with Toluidine blue (TB) (scale bar 20 μm). d Male gonad in cross-section stained with Periodic Acid-Schiff (PAS) (scale bar 20 μm). g gonad, m mesoglea, mb manubrium, nc nucleus, p pedalia, r rhopalia, sc spermatocyte, sg spermatogonia, t tentacle, v velarium, vl vacuole
Figure 9 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 9. Morbakka sp. from the Philippines (USNM 28713): (A) whole specimen of the large individual, (B) whole specimen of the small individual, (C) rhopaliar niche ostium, (D) pedalial canal of the large specimen, (E) pedalial canal bend of the small specimen, (F) velarial canals of the small specimen, (G) velarial canals of the large specimen, (H, I) unidentified nematocyst capsules from the tentacles. rho: rhopaliar horn, rno: rhopaliar niche ostium, pcb: pedalial canal bend, pl: perradial lappet. Scale bars: 10 mm (A, B and G), 5 mm (C–F), and 50 µm (H, I).
Figure 5 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 5. Malo filipina: (A) whole specimen, USNM 27936, (B) view from subumbrellar opening into subumbrellar cavity; the manubrium was cut open showing the inside of the lower portion of the stomach (USNM 27936), (C) frenulum 27936, (D) velarium with perradial lappet (USNM 27936), (E) velarium with perradial lappet (USNM 27935), (F) pedalium (USNM 28714), (G) pedalial canal with proximal pedalial canal bend (USNM 27936), (H) rhopaliar niche (USNM 27936). fre: frenulum, ma: manubrium, me: mesenterium, nw: nematocyst wart, pcb: pedalial canal bend, pl: perradial lappet, rho: rhopaliar horn, rno: rhopaliar niche ostium, ve: velarium. Scale bars: 10 mm (A, B, D–F), 5 mm (C, G and H).
Figure 3 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 3. Key characters for identification of the Carybdeida: (A) location of taxonomic characters (Carybdea brevipedalia; image courtesy of Alvaro Migotto), (B) T-shaped rhopaliar niche ostium; note the three scales covering the niche, thus leaving a T-shaped ostium, (C) heartshaped rhopaliar niche ostium; niche ostium with only one upper covering scale, (D) key-hole shaped rhopaliar niche ostium in Copula sivickisi, (E) frown-shaped rhopaliar niche ostium in Tripedalia, (F) frown-shaped rhopaliar niche ostium in Tamoya, (G) frown-shaped rhopaliar niche ostium with rhopaliar horns in Malo, (H, I) vertical gastric phacellae in the stomach of Tamoya, (J) multiple pedalia on each corner of the swimming bell in Tripedalia, (K) crescentric gastric phacellae in Alatina (apical view). cs: covering scale, ma: manubrium, ph: gastric phacellae (comprises gastric cirri) in the stomach cavity, pc: pedalial canal, pcb: pedalial canal bend, pe: pedalium, rh: rhopalium, rn: rhopaliar niche that opens on the exumbrellar side of the bell with the rhopaliar niche ostium, rno: rhopaliar niche ostium, rho: rhopaliar horn, sto: stomach, te: tentacle, ve: velarium, vec: velarial canal.
Figure 4 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 4. Characters distinguishing the genera of Carukiidae. The location of the characters illustrated in (A–J) are indicated on the specimen in the upper left hand corner. The rhopaliar niche ostium is always horizontally oriented and more or less oval in the Carukiidae; however, its shape may vary among specimens. Carukia: (A) rhopaliar niche with horns, (B) velarium, (C) tentacle with "neckerchiefs"; Malo: (D) rhopaliar niche with horns, (E) velarium; Gerongia: (F) rhopaliar niche with horns, (G) velarium; Morbakka: (H, I) differences of rhopaliar niche and horns between M. fenneri (H) and M. virulenta (I), in both cases the rhopaliar horns are "rabbit-ear" shaped but the angle and breadth of the horns vary, (J) velarium. nc: "neckerchief", nw: nematocyst wart, pl: perradial lappet, rn: rhopaliar niche, rno: rhopaliar niche ostium, rho: rhopaliar horn, ve: velarium, vec: velarial canal.
Figure 2 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 2. Representative species of box jellyfish from each family of Carybdeida (A–E) and one from Chirodropida (F). Note that the chirodropid possesses multiple tentacles per pedalium (F) whereas the carybdeid species possess only a single tentacle per pedalium (A–E). (A) Tamoya ohboya (Tamoyidae; image courtesy of Tim Lowry), (B) Malo kingi (Carukiidae), (C) male and female of Copula sivickisi coupling during courtship (Tripedaliidae; image courtesy of Alvaro Migotto), (D) Carybdea branchi (Carybdeidae; image courtesy of Brent Viljoen), (E) Alatina sp. (Alatinidae), (F) Chiropsalmus quadrumanus (Chiropsalmidae). sb: swimming bell, pe: pedalium, te: tentacle.
Figure 1 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 1. Family level relationships within Cubozoa following Bentlage et al. (2010). Key characters to the orders and families are indicated on the branches of the cladogram. Detailed explanations of the characters can be found in the dichotomous key and associated figures. Chirodropida possess multiple tentacles per pedalium (A) whereas Carybdeida possess a single tentacle per pedalium (B). In the Tripedaliidae multiple pedalia each bearing a single tentacle may be present that can be mistaken for multiple tentacles arising from a single pedalium. The families of the Carybdeida can be identified using the following characters. Alatinidae (C): rhopaliar niche ostium T-shaped. Carukiidae (D): rhopaliar niche ostium with rhopaliar horns, stomach lacking gastric phacellae. Tamoyidae (E): rhopaliar niche ostium frown-shaped, lacking rhopaliar horns, gastric phacellae vertical. Tripedaliidae (F): rhopaliar niche ostium keyhole-shaped, or alternatively rhopaliar niche ostium frown-shaped and two or three pedalia per corner instead of one. Carybdeidae (G): rhopaliar niche ostium heart-shaped.
Figure 7 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 7. Morbakka virulenta: (A) specimen in its natural environment in Hiroshima Bay (image courtesy of Masato Kawahara), (B) whole specimen of the neotype USNM 1124253, (C) interior of stomach with area corrugata, (D) subumbrellar view with manubrium and mesentery, (E) frenulum, (F) velarium with perradial lappet, (G) pedalium with nematocyst warts on outer keel and overhang on inner keel, (H) pedalial canal with pedalial canal bend, (I) rhopaliar niche. (B, C, I) USNM 1124253; (H) USNM 114252. ac: area corrugata, fre: frenulum, ik: inner keel, ma: manubrium, me: mesentery, ok: outer keel, pl: perradial lappet, rho: rhopaliar horn, rno: rhopaliar niche ostium, ve: velarium. Scale bars: 10 mm.
Fig. 2 in A New Species of Box Jellyfish (Cnidaria: Tripedaliidae: Tripedalia) from Hong Kong, China
Fig. 2. Maximum-likelihood tree of cubozoans based on a concatenated dataset of 16S, 18S and 28S. Ultrafast bootstrap (UFBoot) values higher than 75 are shown on nodes. Asterisks indicate UFBoot values> 90.
Fig. 1 in A New Species of Box Jellyfish (Cnidaria: Tripedaliidae: Tripedalia) from Hong Kong, China
Fig. 1. Morphological characteristics and phylogenetic position of Tripedalia maipoensis sp. nov. (A–B) holotype (TMBC030991), female, living specimen, lateral view showing the gross morphology (A), and oblique top view showing gastric phacellus (B); (C) Rhopalial niche, preserved specimen, paratype (TMBC030992); (D) Rhopalium, showing six eyes and a statolith; (E) Upside down view of the bell showing the velarial canals, preserved specimen, paratype (TMBC030992), male; (F) details of the velarial canals, preserved specimen, holotype (TMBC030991), female; (G) oblique top view, showing nematocyst warts and gastric phacellus, living specimen, paratype TMBC030992; (H) manubrium, preserved, paratype (TMBC030997); (I) Nematocyst batteries from tentacle, paratype (TMBC030997). Scale bars: A–B = 1 cm; C, F, H = 1 mm; D = 0.3 mm; E, G = 5 mm; I = 10 µm. Abbreviations: cs, crystalline statolith; g, gonad; gp, gastric phacellae; le, lower lens eye; nw, nematocyst wart; pe, pit eye; rn, rhopalial niche; se, slit eye; ue, upper lens eye; vc, velarial canal.
Figure 8 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 8. Nematocysts of Morbakka virulenta; for identifications and sizes see cnidome description.
Figure 6 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)
Figure 6. Nematocysts of Malo filipina; for identifications and sizes see cnidome description.
Fig. 7 in Histomorphological comparison of testes in species of box jellyfish (Cnidaria; Cubozoa): does morphology differ with mode of reproduction and fertilization?
Fig. 7 Cubozoan phylogenetic relationships according to Bentlage et al. (2010) and corresponding histology of male gonads; branches to each taxon are mapped with known characteristics of sexual reproduction and fertilization of the species described herein and in García-
Fig. 5 in Histomorphological comparison of testes in species of box jellyfish (Cnidaria; Cubozoa): does morphology differ with mode of reproduction and fertilization?
Fig. 5 Chiropsalmus quadrumanus from São Paulo State (Brazil). a Live specimen (scale bar 4 cm) (Image courtesy of Alvaro E. Migotto). b Male gonad stained with hematoxylineosin (HE) (scale bar 50 μm). c Male gonad stained with Periodic Acid-Schiff + Hematoxylin (PASH) (scale bar 20 μm). d Male gonad in cross-section stained with Gomori's trichrome + hematoxylin (TG-H) (scale bar 20 μm). g gonad, gs gastric saccules, m mesoglea, nc nucleus, p pedalia, r rhopalia, sc spermatocyte, sd spermatid, sg spermatogonia, sp sperm, t tentacle, v velarium, vl vacuole
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