Oenopota levidensis OENLIV-092694-SHIRON-003

This entry was posted on Monday, September 26th, 1994 and is filed under Slugs and snails, Spawning Reports.

The Breeder’s Registry© Information contained in this report is taken from submitted observations from aquarist unless noted otherwise (see comments). Information may be reproduced providing the Breeder’s Registry is cited.


Breeder ID: OENLIV-092694-SHIRON-003

Date received: 9/26/94

Identification: Oenopota levidensis (?)

Geographic origin: NE Pacific


Taxonomy: (after I.C.Z.N.)

Kingdom Animalia

Phylum Mollusca

Subphylum

Class Gastropoda

Order Neogastropoda

Family

Genus Oenopota

Species levidensis (?)


Duration male(yr): 2+

Size male (mm): 5 – 7

Duration female 1 (yr): 2+

Size female 1 (mm): 5 – 7

Broodstock notes: Collected in shallow water, Oregon biome, 3 – 10 meters below MLLW

Physical differences: Male has large penis on right side of mantle cavity

Adult diet: Live polychaetes Owenia fusiformis

Pre-spawning activity: Copulation 1 – 2 months prior to oviposition. Will spawn in clean glass containers. DO NOT wash with soap, DO NOT feed during oviposition.

Time spawning began: night, mid Dec – Feb

Area spawning occurred: vertical surface, 1 – 3 cm above bottom.

Frequency of spawning: for 1-3 nights, spawning females

Egg description: lenticular capsule 3 – 5 mm in may lay 1 -3 capsules per night diameter

Approximate quantity: 90 – 260

Size: 290 micrometers

Egg changes / development:

Incubation period: 20 – 70 days

Time hatching occurred: n/a

Size of hatching larvae: 1 mm

Newly hatched appearance: Newly hatched veligers are phototactic for a few days. Larvae develop demersally for up to 7 weeks prior to metamorphosis

Transfer / removal method: Left in container until hatched, then removed to rearing tank

Spawning tank size (liter): 25

Sides of tank covered? No

Lighting & photoperiod: ambient

Filtration: 25 ml beaker with fresh filtered seawater daily

Additives and dosages: Penicillin, 10 ml @ 0.1% to retard bacterial growth

Water temperature (F): 46-53

 


Fry development / changes: Typical neogastropod veliger, “butterfly” shaped velum with orange granules around edge.

First food offered: Duneliella, Isochrysis, and Phaesdactlum daily

Second food offered:

Survival

1st week(%):

2nd week:

3rd week:

4th week:100%

Development description: Typical gastropod development. See Shimek, R.L., 1986, International Journal of Reproductive Development, 10:313-334


Rearing tank size (liter) 500 (1 x 1 x.5 meters)

Sides of tank covered?

Lighting & photoperiod: ambient

Filtration: open system, 5 – 10 volume change per hour

 


Comments: (10/18/96) Detailed taxonomic information or physical description is not presently available.

Word origin: oen, -o, =us, (Greek), wine. pot, -a, -I, -o, (Greek), drink. The species name could have several different word root combinations: levi, (Latin), smooth, light. dens, (Latin), thick, a tooth, -ens, =e, =is, (Latin) belonging to. ensi, -s, (Latin), sword.

About this report: Information contained in this report is taken from submitted observations. Taxonomy, Synonomy, Original description , Word origin and Suggested reading are provided by member(s) of The Breeder’s Registry staff. Information is presented under the belief that it is accurate. If you have information in addition to, or contrary to that presented you are encouraged to contact the Breeder’s Registry. Permission is granted for “one-time” personal use. Reproduction as distributed or accessible media is prohibited without prior written permission. All rights reserved. 1994

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