haliotis discus
{{Short description|Species of gastropod}}
{{Use dmy dates|date=January 2021}}
{{Speciesbox
| image = Haliotis discus discus 01.JPG
| image_caption = Shell of Haliotis discus discus
| image2 = Haliotis discus hannai 01.JPG
| image2_caption = Shell of Haliotis discus hannai
| status = EN
| status_system = IUCN3.1
| genus = Haliotis
| species = discus
| authority = Reeve, 1846
| subdivision_ranks = Subspecies
| subdivision = {{Species list
|Haliotis discus discus|Reeve, 1846
|Haliotis discus hannai|Ino, 1953}}
| subdivision_ref = {{cite WoRMS |id=397082 |title=Haliotis discus Reeve, 1846 |db=mollusca |access-date=7 December 2024}}
}}
Haliotis discus is a species of abalone native to Japan and Korea.
Taxonomy and subspecies
Haliotis discus was described by Lovell Augustus Reeve in 1846.{{cite book |last1=Reeve |first1=Lovell Augustus |author1-link=Lovell Augustus Reeve |year=1846 |title=Monograph of the genus Haliotis |series=Conchologia iconica, or, Illustrations of the shells of molluscous animals |volume=3 |publisher=Reeve Brothers |location=London |doi=10.5962/bhl.title.8129 |lccn=50044613 |oclc=2304849 |url=https://www.biodiversitylibrary.org/page/11118633 |via=Biodiversity Heritage Library}} Two subspecies are known:
- Haliotis discus discus Reeve, 1846 – Japan (Honshu, Kyushu, Shikoku) and Korea (Jeju Island){{cite iucn |last1=Peters |first1=H. |last2=Takami |first2=H. |last3=Kiyomoto |first3=S. |last4=Kawamura |first4=T. |year=2022 |title=Haliotis discus ssp. discus |volume=2022 |page=e.T215430084A215430133 |doi=10.2305/IUCN.UK.2022-2.RLTS.T215430084A215430133.en |access-date=7 December 2024}}
- Haliotis discus hannai Ino, 1953 – Japan (Hokkaido, Honshu, Kyushu, Shikoku) and Korea{{cite iucn |last1=Peters |first1=H. |last2=Takami |first2=H. |last3=Kiyomoto |first3=S. |last4=Kawamura |first4=T. |year=2022 |title=Haliotis discus ssp. hannai |volume=2022 |page=e.T215430111A215430123 |doi=10.2305/IUCN.UK.2022-2.RLTS.T215430111A215430123.en |access-date=7 December 2024}}
Distribution and habitat
Haliotis discus is native to the shallow subtidal waters off Japan and Korea in the north western Pacific Ocean. H. discus discus typically hides between rocks found at depths of {{cvt|5-10|m}}, sometimes as deep as {{cvt|30|m}}, in the waters around Jeju Island in Korea and Kyushu, Shikoku, and all but the most north eastern areas of Honshu in Japan. H. discus hannai is typically found in exposed habitats at depths of {{cvt|1-5|m}} in waters the around Korea and the north eastern coast of Honshu and western coast of Hokkaido in Japan.
Description
File:Sashimi of Haliotis discus.jpg]]
The size of the shell varies between 100 mm and 150 mm. "This species is closely allied in all characters to Haliotis kamtschatkana but is more elongated than the typical Kamtschatkana. The interior surface has a peculiarly metallic luster, light bronze-green and coppery-red predominating."[https://archive.org/details/manualconch12tryorich H.A. Pilsbry (1890) Manual of Conchology XII; Academy of Natural Sciences, Philadelphia, 1890]
Ecology
Haliotis discus larvae settle on crust-forming coralline algae and feed on diatoms as they develop, moving out into kelp beds as they near maturity. Primary predators of this species include crabs, starfishes, and octopuses.
In H. discus discus, spawning occurs from October to December. Adults feed on seaweeds such as Eisenia bicyclis, Undaria pinnatifida, and Ecklonia species.
References
{{Reflist}}
- Geiger D.L. & Owen B. (2012) Abalone: Worldwide Haliotidae. Hackenheim: Conchbooks. viii + 361 pp.
External links
{{Commons category|Haliotis discus}}
- {{Gastropods.com|key=0|id=120|title=Haliotis (Haliotis) discus discus|access-date=16 January 2019}}
{{Taxonbar|from=Q3011996}}
Category:Molluscs of the Pacific Ocean
Category:Gastropods described in 1846
Category:Taxa named by Lovell Augustus Reeve
Category:Endangered biota of Asia
{{Haliotidae-stub}}