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Gallery  :  Artemia   |   Gryllus   |   Limulus   |   Oncopeltus   |   Parhyale   |   Polychaetes   |   Sea Urchins   |   Mixed Bag

 

Sea Urchins Gallery

Lytechinus variegatus – aboral test of a dead animal   Lytechinus variegatus – aboral view of a live animal

Lytechinus variegatus – aboral test of a dead animal
(photo Extavour)

 

Lytechinus variegatus – aboral view of a live animal
(photo Extavour)

Lytechinus variegatus – aboral close up showing madreporite   Lytechinus variegatus – view of aboral pole of the skeleton from within the animal

Lytechinus variegatus – aboral close up showing madreporite. (photo Extavour)

 

Lytechinus variegatus – view of aboral pole of the skeleton from within the animal: five anal pores, five rows of tube foot openings, and the five arms of the gonad are visible.
(photo Extavour)

Lytechinus variegatus – genital plates dissected and cleaned   Lytechinus variegatus – pluteus larva

Lytechinus variegatus – genital plates dissected and cleaned. (photo Extavour)

 

Lytechinus variegatus – pluteus larva
(photo Extavour)

Lytechinus variegatus – view of madreporite opening from within the animal    

Lytechinus variegatus – view of madreporite opening from within the animal; egg release has been induced and eggs are spilling into the body cavity.
(photo Extavour)

 

 

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