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First records of an egg mass and a paralarva of Thysanoteuthis rhombus (Cephalopoda: Thysanoteuthidae) in the Northeastern Tropical Pacific

De Silva Dávila, Roxana | Avendaño Ibarra, Raymundo [autor/a] | Palomares García, Ricardo [autor/a] | Markaida Aburto, Unai [autor/a].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Thysanoteuthis rhombus | Cephalopoda | Paralarvas | Taxonomía animalTema(s) en inglés: Thysanoteuthis rhombus | Cephalopods | Paralarvae | Animal taxonomyDescriptor(es) geográficos: Golfo de California (México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Pacific Science. volumen 73, número 4 (December 2019), páginas 475-491. --ISSN: 1534-6188Número de sistema: 59749Resumen:
Inglés

An egg mass fragment and one paralarva of the squid Thysanoteuthis rhombus found in the Northeastern Tropical Pacific and Gulf of California, Mexico are the first evidence of reproduction of this species in the region. The egg mass fragment was in the disintegration process and contained 30,360 premature hatchlings (96.2%) and 1,192 eggs (3.8%) at different developmental stages. Head chromatophore patterns, buccal crown pigmentation, arm and tentacles indexes, and other morphological characteristics complement previous descriptions of T. rhombus paralarvae. The zooplanktonic community associated with the egg mass was dominated by six species of predatory copepods of the genus Labidocera, Pontella, Oncaea, and Corycaeus which might have actively colonized the egg mass to feed upon the eggs and hatchlings.

Recurso en línea: https://bioone.org/journals/pacific-science/volume-73/issue-4/73.4.4/First-Records-of-an-Egg-Mass-and-a-Paralarva-of/10.2984/73.4.4.full
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Disponible para usuarios de ECOSUR con su clave de acceso

An egg mass fragment and one paralarva of the squid Thysanoteuthis rhombus found in the Northeastern Tropical Pacific and Gulf of California, Mexico are the first evidence of reproduction of this species in the region. The egg mass fragment was in the disintegration process and contained 30,360 premature hatchlings (96.2%) and 1,192 eggs (3.8%) at different developmental stages. Head chromatophore patterns, buccal crown pigmentation, arm and tentacles indexes, and other morphological characteristics complement previous descriptions of T. rhombus paralarvae. The zooplanktonic community associated with the egg mass was dominated by six species of predatory copepods of the genus Labidocera, Pontella, Oncaea, and Corycaeus which might have actively colonized the egg mass to feed upon the eggs and hatchlings. eng

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