Crisilla galvagni
| Crisilla galvagni | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Rissoidae |
| Genus: | Crisilla |
| Species: | C. galvagni
|
| Binomial name | |
| Crisilla galvagni (Aradas & Maggiore, 1844)
| |
| Synonyms[1] | |
| |
Crisilla galvagni is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.[1]
Crisilla galvagni is a species of minute sea snail, a marine gastropod mollusc belonging to the family Rissoidae. Like other members of the genus Crisilla, it is classified as a micromollusc due to its very small shell size. The species is part of the diverse rissoid fauna commonly found in Shallow water marine environment habitats across parts of the northeastern Atlantic and Mediterranean regions.[2]
Taxonomy
- Kingdom: Animalia
- Phylum: Mollusca
- Class: Gastropoda
- Superfamily: Rissooidea
- Family: Rissoidae
- Genus: Crisilla
- Species: C. galvagni
The species was originally described during taxonomic revisions of rissoid gastropods and has since been retained within the genus Crisilla based on shell morphology and anatomical features typical of the group.[3][4][5]
Description
Crisilla galvagni is a micromollusc, generally measuring only a few millimeters in length.[6] Its shell is:
- Small and ovate-conical
- The shell attains a length of 1.4 mm.
- Typically semi-transparent to light brown
- Sculptured with fine growth lines or faint spiral striations
- Equipped with a simple, rounded aperture
Like other rissoids, the soft body is adapted for crawling on hard substrates, with a well-developed head, tentacles, and operculum.[7]
Distribution
The species is known from parts of the Mediterranean Sea and possibly the adjacent northeastern Atlantic. Records generally associate it with:
- Coastal rocky zones
- Algal beds
- Shallow subtidal environments
Exact distribution ranges vary between regional marine surveys, as micromolluscs are often under-sampled due to their small size.
Habitat and Ecology
Crisilla galvagni inhabits shallow marine ecosystems, usually living:
- Among algae and seagrass
- On stones, shells, and rocky substrates
- In areas with moderate water movement
As a grazer, it feeds on microalgae, biofilm, and organic detritus, playing a small but significant role in coastal benthic food webs.
Conservation Status
There is no targeted conservation assessment specifically for Crisilla galvagni. However:
- Its habitats may be vulnerable to coastal pollution, habitat modification, and climate-related changes.
- As a micromollusc, it can be sensitive to water quality shifts and sedimentation.
- No population decline has been formally documented.
See also
References
- ^ a b Bouchet, P. (2015). Crisilla galvagni (Aradas & Maggiore, 1844). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=730420 on 2015-09-15
- ^ "WoRMS - World Register of Marine Species - Crisilla galvagni (Aradas & Maggiore, 1844)". marinespecies.org. Retrieved 2025-11-26.
- ^ "Phylum Mollusca | manoa.hawaii.edu/ExploringOurFluidEarth". manoa.hawaii.edu. Retrieved 2025-11-26.
- ^ Ávila, Sérgio P.; Goud, Jeroen; de Frias Martins, António M. (2012). "Patterns of Diversity of the Rissoidae (Mollusca: Gastropoda) in the Atlantic and the Mediterranean Region". The Scientific World Journal. 2012 (1) 164890. doi:10.1100/2012/164890. ISSN 1537-744X. PMC 3366234. PMID 22693430.
- ^ "Superfamily Rissooidea". keys.lucidcentral.org. Retrieved 2025-11-26.
- ^ "MicroAngela - Micromollusk". www1.pbrc.hawaii.edu. Retrieved 2025-11-26.
- ^ "This animal has a soft body and arm-like tentacles. You". KnowledgeBoat. Retrieved 2025-11-26.
External links
- "Crisilla galvagni". Gastropods.com. Retrieved 16 January 2019.