Planorbella duryi explained

Planorbella duryi, common name the Seminole rams-horn, is a species of air-breathing freshwater snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails. The species is endemic to Florida and is found frequently in home aquariums.

Description

thumb|Apical and apertural view of a shell of Planorbella duryi. Scale bar is 10 mm.

In the wild they are brown.^[1] In captivity they have been bred to come in many colours. These colours are:

• Brown
• Brown leopard
• Blue
• Blue leopard
• Red/orange
• Pink
• Green
• Purple^[2]

Distribution

This species of snail is endemic to the freshwater ecosystems of the US state of Florida.^[3] Fossils of the species have been found dating back to the Piacenzian, in the Tamiami formation.

It has been introduced to Hawaii and lives in the wild there.^[4] It is an introduced species in various European islands and countries including:^[5]

• Great Britain as a "hothouse alien"
• Hungary
• Ireland as a "hothouse alien"
• Parts of Southern Nigeria [e.g Ogun State, Lagos, Oyo]
• Palestine, first discovered in the pond at the Palestine Museum of Natural History^[6]
• Poland
• A live population was found in a brook with thermal water flowing from the Sliač spa, Slovakia, in 2023.^[7]

Habitat

They are found in most freshwater habitats including streams and ponds.^[8]

Conservation status

This species is listed by natureserve as G5.^[9]

Diet

They eat dead or decaying plants or fish, and algae.^[10]

Breeding

They are hermaphrodites. They lay eggs and are very fast breeders.^[11]

Human use

They are a very common aquarium snail. Eggs can get into aquariums on plants. Some people consider them pests due to their ability to breed very fast and overpopulate. Other people value them as part of their clean up crew.^[12]

External links

• images
• AnimalBase info at: Web site: AnimalBase :: Helisoma duryi species homepage. animalbase.

Notes and References

1. Web site: PLANORBIDAE, Helisoma duryi Conchology. conchology.be.
2. Web site: Ramshorn Snail: Care, Colors & Info (+ Why You Need Them). pure gold fish.
3. Web site: AnimalBase :: Helisoma duryi species homepage. animalbase.
4. Web site: Planorbella duryi. hbs.bishopmuseum.
5. Web site: AnimalBase :: Helisoma duryi species homepage. animalbase.
6. Handal . Elias . Adawi . Shadi . Gedeon . Johann . Amr . Zuhair S. . 2023-03-25 . Notes on the current status of freshwater snails fauna of the Palestinian territories (West Bank) . Folia Malacologica . english . 31 . 2 . 92–99 . 10.12657/folmal.031.010 . 1506-7629. free .
7. Čejka . Tomáš . Beran . Luboš . Adamcová . Tereza . Bronišová . Veronika . Coufal . Radovan . Čiliak . Marek . Drvotová . Magda . Horáčková . Jitka . Horsáková . Veronika . Juřičková . Lucie . Kocurková . Alena . Korábek . Ondřej . Podroužková . Štěpánka . Říhová . Dagmar B. . Šlachtová . Erika . 2024-06-24 . Malacological news from the Czech and Slovak Republics in 2023 . Malacologica Bohemoslovaca . en . 23 . 69–83 . 10.5817/MaB2024-23-69 . 1336-6939.
8. Web site: Planorbella duryi. hbs.bishopmuseum.
9. Web site: Planorbella duryi NatureServe Explorer 2.0. natureserve Explorer.
10. Web site: Ramshorn Snails - Detailed Guide: Care, Diet and Breeding. aquarium breeder.
11. Web site: Ramshorn Snail Care, Size, Food, Reproduction, Lifespan - Video. aquarium care basics.
12. Web site: Ramshorn Snail Guide Removal & Information. Aquarium info.