Report: Lysmata wurdemanni (Rcvd: 3/20/94)

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: LYSWUR-032094-SOWDAV-001 Date received: 3/20/94

Identification: Lysmata wurdemanni (Gibbes, 1850) Geographic origin: Caribbean

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

Kingdom Animalia

Phylum Arthropoda

Subphylum Chelicerata

Class Malacostraca

Subclass Eumalacostraca

Super Order Eucarida

Order Decapoda

Suborder Pleocyemata

Infraorder Caridea

Family Hippolytidae

Genus Lysmata (Risso, 1816)

Species wurdemanni (Gibbes, 1850)

Duration Male (yr): <1 Size: not indicated

Duration Female (yr):<1 Size: not indicated

Physical differences: Not observable, but does have ability to change sex

Adult diet: Artemia, Flake food, frozen foods, commercial shrimp maturation diet. Fed twice daily

Pre-spawning activity: Shrimp are believed to store sperm. Male inserts sperm packet into females underside

Time spawning began: after molt Area spawning occurred: not specific

Frequency of spawning: 11 - 15 days Egg(s) description: Green, size and quantity dependent on adult size

Approximate quantity: up to 500 Size: varies

Egg changes/development: not noted

Incubation period: 5 - 7 days Time hatching occurred: night

Newly hatched appear: Zooid stage - eyes not fully developed on eye stalks. Attracted to light

Size of hatching larvae: 4.2 mm, yolk sac not present

Method removal/transfer: No, eggs remain attached to pleopod

Spawning tank size(liter): 37 Sides of tank covered? Yes

Lighting & photo period: Flourescent cool-white, 5 cm above surface, 14 hours

Filtration: Water circulated through very course crushed coral

Additives & doses: Calcium carbonate

NO water parameters indicated.

Fry development/changes: Mysis stage; eyes are better developed. After 8 weeks larvae metamorphosis to juvenile and start reproducing within a week. Few viable eggs from first spawn.

First food offered: microalga, "infusia", rotifers

Second food offered: Artemia nauplii, commercial food

Survival at 4 weeks: 5%

Development description: Post-larval stages have fully developed eye-stalks and develop 2 long "walking" legs which aid in catching prey and swimming.

Spawning tank size(liter): 37 Sides of tank covered? Yes

Lighting & photo period: Flourescent cool-white, 5 cm above surface, 14 hours

Filtration: Water circulated through very course crushed coral

Additives & doses: Calcium carbonate

Water temperature (F): 80 - 83 F Specific gravity: 1.023 pH: 8.1 Nitrate: >30 ppm

Comments: Tanks contained several hanging screens which aided the shrimp to pull out of molts. Screens need to be very fine, 1/64" or smaller. Spawnings occured 2/8 through 11/8/1988. Slightly larger than L. debelius, L. amboinensis.

Original Description:

Word origin: Lysmata appears to be from the Greek roots Lys meaning loose and mat, -aeo, -eo, meaning foolish or idle. The species wurdemanni is apparently in reference to Wurdemann, (unknown) indicated by the Latin genitive ending -i.

The literal translation for the genus seems a bit confusing and Lysmata may refer to the cleaner shrimps behavior of leaving the substrate (loose) to clean fish capable of eating them (foolish).

The order Decapoda means "ten legs" (Deca indicating ten and pod meaning foot. The suborder Pleocyemata is from the Greek root(s); pleo meaning full, more; sail, swim; and cyem, -a, -ato, -I, meaning an embryo. The Infraorder Caridea is from the Latin root cari, -d, =s meaning shrimp The family Hippolytidae are the "cleaner" shrimp.. Hippolytidae appears to be a combination of hippo meaning "horse" and ly another word for loose, and idae being a standard suffix for an animal, although generally used on family designations.