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Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

Por: Salazar Vallejo, Sergio I.. Doctor [autor].
Tipo de material: Artículo
 en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Hesione savigny | Poliquetos | Aparato digestivo | Especies nuevas | New species | Taxonomía animalTema(s) en inglés: Hesione savigny | Polychaeta | Digestive organs | Animal taxonomyNota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Zoosystema. Volumen 40, número 12 (June 2018), páginas 227-325. --ISSN: 1280-9551Número de sistema: 59516Resumen:
Inglés

The species of Hesione Savigny in Lamarck, 1818 are among the most colorful marine benthic annelids, but their pigmentation often fades in ethanol, rendering it of little use as a diagnostic feature. Further, the body includes only 16 chaetigers but because parapodia are modified after preservation, several authors have lumped most species under a few names. The digestive and reproductive systems are known for a single species (H. sicula delle Chiaje, 1830), and its gonads are hermaphroditic. In order to improve our knowledge of the genus, available specimens in the larger collections of the world were studied under a standardised approach, parapodial/neurochaetal features were defined following previous guidelines, and pigmentation patterns were reassessed. Some observations were made on the digestive system and on some details of the gonads, including Scanning Electron Microscopy (SEM) photos of sperm. Hesione includes 23 species. Twelve were already known: H. ceylonica Grube, 1874 reinstated; H. eugeniae Kinberg, 1866; H. genetta Grube, 1867 restricted; H. intertexta Grube, 1878 restricted; H. pacifica McIntosh, 1885 reinstated; H. panamena Chamberlin, 1919 reinstated; H. pantherina Risso, 1826 restricted; H. picta Müller, 1858 (incl. H. proctochona Schmarda, 1861 and H. vittigera Ehlers, 1887); H. praetexta Ehlers, 1887 reinstated; H. sicula delle Chiaje, 1830 reinstated (incl. H. steenstrupi de Quatrefages, 1866); and H. splendida Savigny in Lamarck, 1818 (incl. H. ehlersiGravier, 1900); H. reticulata von Marenzeller, 1879 has been recently redefined. Eleven species are newly described: H. beneliahuae n. sp. from La Réunion; H. fitzhughi n. sp. from Australia; H. harrisae n. sp. from Puerto Rico; H. hartmanae n. sp. from the Galápagos Islands; H. helenensis n. sp. from Saint Helena Island; H. horsti n. sp. from Indonesia; H. keablei n. sp. from Australia; H. mooreaen. sp. from Saudi Arabia; H. osbornae n. sp. from the Philippines; H. paulayi n. sp. from Papua New Guinea; and H. uchidai n. sp. from the Philippines. A key is included to identify all the species in the genus. An appendix is also included to clarify the publication dates of Stefano delle Chiaje papers on marine invertebrates.

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Disponible para usuarios de ECOSUR con su clave de acceso

The species of Hesione Savigny in Lamarck, 1818 are among the most colorful marine benthic annelids, but their pigmentation often fades in ethanol, rendering it of little use as a diagnostic feature. Further, the body includes only 16 chaetigers but because parapodia are modified after preservation, several authors have lumped most species under a few names. The digestive and reproductive systems are known for a single species (H. sicula delle Chiaje, 1830), and its gonads are hermaphroditic. In order to improve our knowledge of the genus, available specimens in the larger collections of the world were studied under a standardised approach, parapodial/neurochaetal features were defined following previous guidelines, and pigmentation patterns were reassessed. Some observations were made on the digestive system and on some details of the gonads, including Scanning Electron Microscopy (SEM) photos of sperm. Hesione includes 23 species. Twelve were already known: H. ceylonica Grube, 1874 reinstated; H. eugeniae Kinberg, 1866; H. genetta Grube, 1867 restricted; H. intertexta Grube, 1878 restricted; H. pacifica McIntosh, 1885 reinstated; H. panamena Chamberlin, 1919 reinstated; H. pantherina Risso, 1826 restricted; H. picta Müller, 1858 (incl. H. proctochona Schmarda, 1861 and H. vittigera Ehlers, 1887); H. praetexta Ehlers, 1887 reinstated; H. sicula delle Chiaje, 1830 reinstated (incl. H. steenstrupi de Quatrefages, 1866); and H. splendida Savigny in Lamarck, 1818 (incl. H. ehlersiGravier, 1900); H. reticulata von Marenzeller, 1879 has been recently redefined. Eleven species are newly described: H. beneliahuae n. sp. from La Réunion; H. fitzhughi n. sp. from Australia; H. harrisae n. sp. from Puerto Rico; H. hartmanae n. sp. from the Galápagos Islands; H. helenensis n. sp. from Saint Helena Island; H. horsti n. sp. from Indonesia; H. keablei n. sp. from Australia; H. mooreaen. sp. from Saudi Arabia; H. osbornae n. sp. from the Philippines; H. paulayi n. sp. from Papua New Guinea; and H. uchidai n. sp. from the Philippines. A key is included to identify all the species in the genus. An appendix is also included to clarify the publication dates of Stefano delle Chiaje papers on marine invertebrates. eng

Révision du genre Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae).Les espèces de Hesione Savigny in Lamarck, 1818 sont parmi les annélides benthiques les plus colo-rées, mais leur pigmentation disparaît souvent dans l'éthanol, diminuant son utilité comme carac-tère diagnostique. De plus, le corps ne comprend que 16 sétigères mais comme les parapodes sont modifiés après conservation, plusieurs auteurs ont regroupé la plupart des espèces sous des noms distincts. Les systèmes digestifs et reproducteurs sont connus pour une seule espèce (H. sicula delle Chiaje, 1830) et ses gonades sont hermaphrodites. Pour améliorer notre connaissance du genre, les spécimens disponibles dans les plus grandes collections du monde ont été étudiés avec une approche standardisée, les caractères des parapodes/neurochètes ont été définis suivant des règles antérieures, et les patrons de pigmentation ont été réévalués. Des observations ont été faites sur le système digestif et sur quelques détails des gonades, y compris des photos du sperme au microscope électronique à balayage (MEB). Hesione inclut 23 espèces. Douze étaient déjà connues: H. ceylonica Grube, 1874 réhabilitée; H. eugeniae Kinberg, 1866; H. genetta Grube, 1867 restreinte; H. intertexta Grube, 1878 restreinte;H. pacifica McIntosh, 1885 réhabilitée;H. panamena Chamberlin, 1919 réhabi-litée; H. pantherina Risso, 1826 restreinte; H. picta Müller, 1858 (incl. H. proctochona Schmarda, 1861 et H. vittigera Ehlers, 1887); H. praetexta Ehlers, 1887 réhabilitée; H. sicula delle Chiaje, 1830 réhabilitée (incl. H. steenstrupi de Quatrefages, 1866); et H. splendida Savigny in Lamarck, 1818 (incl. H. ehlersi Gravier, 1900). H. reticulata von Marenzeller, 1879 a été redéfinie récemment. Onze espèces sont nouvellement décrites: H. beneliahuae n. sp. de La Réunion, H. fitzhughi n. sp. d'Australie, H. harrisae n. sp. de Puerto Rico, H. hartmanae n. sp. des îles Galápagos, H. helenensisn. sp. de l'île de Sainte-Hélène, H. horsti n. sp. d'Indonésie, H. keablei n. sp. d'Australie, H. mooreaen. sp. d'Arabie saoudite, H. osbornae n. sp. des Philippines, H. paulayi n. sp. de Papouasie-Nouvelle-Guinée, et H. uchidai n. sp. des Philippines. Une clef est incluse pour identifier toutes les espèces du genre. Les dates de publication des articles de Stefano delle Chiaje sur les invertébrés marins sont, d'autre part, clarifiées en annexe. fra

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