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-001 Date received: 9/26/94

Identification: Oenopota lividensis (?) Geographic origin: NE Pacific Taxonomy: (after I.C.Z.N.)

Kingdom Animalia

Phylum Mollusca

Subphylum

Class Gastropoda

Order Neogastropoda

Family

Genus Oenopota

Species lividensis (?)

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 Specific gravity: pH: Nitrate: