Amphogona apsteini
Fuente:
Zenodo
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | Recurso digital |
| Publicado: |
Zenodo
2021
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866901119486132224 |
|---|---|
| author | Schuchert, Peter Collins, Richard |
| author_facet | Schuchert, Peter Collins, Richard |
| contents | <p><b><i>Amphogona apsteini</i> (Vanhöffen, 1902)</b></p><p>Fig. 59 A-B</p><p><i>Pantachogon apsteini</i> Vanhöffen, 1902: 65, pl. 10 fig. 18, pl. 11 fig. 28.</p><p><i>Amphogona apsteini. ‒</i> Browne, 1905: 740, pl. 54 fig. 5, pl. 56 fig. 1, pl. 57 figs 10-15. <i>‒</i> Bigelow, 1909: 126, pl. 2 figs 1-2, pl. 34 figs 12-15, pl. 45 fig. 10. <i>‒</i> Mayer, 1910: 405, fig. 257. <i>‒</i> Kramp, 1959a: 188, fig. 280. <i>‒</i> Kramp, 1965: 123, figs 12-13. <i>‒</i> Kramp, 1968: 118, fig. 319. <i>‒</i> Bleeker & Van der Spoel, 1988: 241, fig. 37.</p><p><b>Examined material:</b> BFLA; 1 specimen; 09-DEC- 2019; size 2 mm, juvenile; preserved in alcohol for DNA extraction; 16S sequence could not be obtained as PCR failed repeatedly. – 05-JUL-2019; 2 specimens photographed, 2 mm, not collected.</p><p><b>Observations:</b> Bell diameter 2 mm, flatter than hemisphere, jelly relatively thin especially towards margin; with thin gastric peduncle reaching almost to level of velum (Fig. 59B); stomach small, lips inconspicuous. Eight radial canals. Gonads when fully developed ellipsoidal, pendant, close to ring canal, all of equal size or larger ones and smaller ones alternating; long axis of ellipsoidal gonads vertical (Fig. 59A). About 70 tentacles, all the same structure. One to two statocysts per octant.</p><p><b>Distribution:</b> Circumglobal in warm waters. In the Indian Ocean from Indonesia to Moçambique (Kramp, 1953, 1968; Bouillon, 1978a); in the Pacific Ocean from eastern Australia, to the northern Part of the China Sea and Peru (Kramp, 1953, 1965; Bouillon, 1978c; Du <i>et al</i>., 2010; Oliveira <i>et al.,</i> 2016). In the South Atlantic from Argentina to Brazil and to western Africa (Kramp, 1955b; Nagata <i>et al</i>., 2014; Oliveira <i>et al.</i>, 2016). In the North Atlantic reported from the mid Atlantic to Florida (Bleeker & Van der Spoel, 1988; Larson <i>et al.</i>, 1991; this study). Type locality: Indian Ocean, west coast of Sumatra.</p><p><b>Remarks:</b> Kramp (1959a, 1965, 1968) states that the unequal size of the gonads, with small and larger ones alternating, is a characteristic trait of this species. However, this is found only in younger specimens, mature ones seem to have equally developed gonads (Bigelow, 1909; Nagata <i>et al.,</i> 2014). Kramp gives also a bell size of 4 to 6 mm. Our specimens were smaller (2 mm). The type material was 2 to 3 mm in size, although perhaps not fully mature. Also Nagata <i>et al.</i> (2014) give a bell size of 2 to 3 mm.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_5710654 |
| institution | Zenodo |
| language | |
| publishDate | 2021 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Amphogona apsteini Schuchert, Peter Collins, Richard Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Trachymedusae Rhopalonematidae Amphogona Amphogona apsteini <p><b><i>Amphogona apsteini</i> (Vanhöffen, 1902)</b></p><p>Fig. 59 A-B</p><p><i>Pantachogon apsteini</i> Vanhöffen, 1902: 65, pl. 10 fig. 18, pl. 11 fig. 28.</p><p><i>Amphogona apsteini. ‒</i> Browne, 1905: 740, pl. 54 fig. 5, pl. 56 fig. 1, pl. 57 figs 10-15. <i>‒</i> Bigelow, 1909: 126, pl. 2 figs 1-2, pl. 34 figs 12-15, pl. 45 fig. 10. <i>‒</i> Mayer, 1910: 405, fig. 257. <i>‒</i> Kramp, 1959a: 188, fig. 280. <i>‒</i> Kramp, 1965: 123, figs 12-13. <i>‒</i> Kramp, 1968: 118, fig. 319. <i>‒</i> Bleeker & Van der Spoel, 1988: 241, fig. 37.</p><p><b>Examined material:</b> BFLA; 1 specimen; 09-DEC- 2019; size 2 mm, juvenile; preserved in alcohol for DNA extraction; 16S sequence could not be obtained as PCR failed repeatedly. – 05-JUL-2019; 2 specimens photographed, 2 mm, not collected.</p><p><b>Observations:</b> Bell diameter 2 mm, flatter than hemisphere, jelly relatively thin especially towards margin; with thin gastric peduncle reaching almost to level of velum (Fig. 59B); stomach small, lips inconspicuous. Eight radial canals. Gonads when fully developed ellipsoidal, pendant, close to ring canal, all of equal size or larger ones and smaller ones alternating; long axis of ellipsoidal gonads vertical (Fig. 59A). About 70 tentacles, all the same structure. One to two statocysts per octant.</p><p><b>Distribution:</b> Circumglobal in warm waters. In the Indian Ocean from Indonesia to Moçambique (Kramp, 1953, 1968; Bouillon, 1978a); in the Pacific Ocean from eastern Australia, to the northern Part of the China Sea and Peru (Kramp, 1953, 1965; Bouillon, 1978c; Du <i>et al</i>., 2010; Oliveira <i>et al.,</i> 2016). In the South Atlantic from Argentina to Brazil and to western Africa (Kramp, 1955b; Nagata <i>et al</i>., 2014; Oliveira <i>et al.</i>, 2016). In the North Atlantic reported from the mid Atlantic to Florida (Bleeker & Van der Spoel, 1988; Larson <i>et al.</i>, 1991; this study). Type locality: Indian Ocean, west coast of Sumatra.</p><p><b>Remarks:</b> Kramp (1959a, 1965, 1968) states that the unequal size of the gonads, with small and larger ones alternating, is a characteristic trait of this species. However, this is found only in younger specimens, mature ones seem to have equally developed gonads (Bigelow, 1909; Nagata <i>et al.,</i> 2014). Kramp gives also a bell size of 4 to 6 mm. Our specimens were smaller (2 mm). The type material was 2 to 3 mm in size, although perhaps not fully mature. Also Nagata <i>et al.</i> (2014) give a bell size of 2 to 3 mm.</p> |
| title | Amphogona apsteini |
| topic | Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Trachymedusae Rhopalonematidae Amphogona Amphogona apsteini |
| url | https://doi.org/10.5281/zenodo.5710654 |