Definition
Doto cuspidata is a marine gastropod mollusk belonging to the order Nudibranchia, commonly referred to as a sea slug. It is classified within the family Dotidae.
Overview
Doto cuspidata is a dorid nudibranch that has been reported from temperate coastal waters of the North Atlantic, particularly around the British Isles and other parts of Western Europe. Like other members of the genus Doto, it is a small, slender organism that typically inhabits subtidal zones where its prey—hydroids—is abundant. The species is a benthic predator, feeding primarily on specific hydroid colonies, although detailed studies on its feeding ecology are limited.
Etymology / Origin
The generic name Doto is derived from the Greek word “δότος” (dotos), meaning “gift” or “offering,” a term historically applied to various marine organisms. The specific epithet cuspidata is Latin for “pointed” or “sharp‑tipped,” likely referring to a distinctive morphological feature such as the shape of its cerata (dorsal appendages). The name was originally assigned by the describing authority in the mid‑19th century, though the exact author and year are not universally agreed upon in the literature.
Characteristics
- Size: Adults typically reach lengths of 5–10 mm.
- Body shape: Elongated and translucent, with a series of cerata extending along the dorsal surface.
- Cerata: The cerata are often elongated and may possess a pointed tip, which is presumably the basis for the species name cuspidata. Each ceras contains a central digestive gland and may display opaque pigmentation at the tip.
- Coloration: Generally pale or translucent with variable shading; in some specimens, the cerata exhibit a faint brownish or orange hue.
- Reproduction: As with other nudibranchs, D. cuspidata is hermaphroditic, possessing both male and female reproductive organs. Egg masses are laid as gelatinous ribbons on the substrate, but the specific morphology of its egg bundles has not been extensively documented.
- Habitat and ecology: Found on or near hydroid colonies, particularly those of the family Aglaopheniidae. Its presence is often an indicator of healthy benthic hydroid communities.
Accurate information is not confirmed regarding the precise geographical range, population status, and detailed life-history traits of Doto cuspidata, as comprehensive taxonomic revisions and ecological studies are limited.
Related Topics
- Genus Doto – Overview of the genus and its species diversity.
- Family Dotidae – Characteristics and taxonomy of the family encompassing Doto and related genera.
- Nudibranchia – General information on sea slugs, their biology, and ecological roles.
- Hydrozoa – The prey organisms for many Doto species, including their taxonomy and distribution.
- Marine biodiversity of the North Atlantic – Context for the habitats where Doto cuspidata has been reported.