Parasitic Mollusca

The question now Does Molluscan

species parasitize on other fauna?

Few records showed that the molluscs are

parasitizing other hosts. In this regard,

glochidial larvae of some unionid bivalve

are parasitizing the respiratory system of

the fishes.

The glochidial larvae of the family unionidae

are hatching out from eggs and incubated

between the gill lamellae of the parents

When the glochidium contacts with the gills of

host fish, the valves clamp shut on a gill

filament, enclosing of it in the mantle cavity.

This enclosed part of the filament becomes

the source of food for the larvae.

examples of parasitic molluscs

Aaplacophorans parasitize hydroids and other corals. Mauritius

Is a single example of a shell which appears to have been found living on an echinus.

The number of genera which may be truly said to be parasitic appears to be very small.

Stilifer

lives a parasite upon echini or in the skin

Styliferina. or tegument of starfishes

OphiuridaeOccurs on species of

Ophidiastericola tiliferS ovoideu Stilifer

Eulima are found in Eulima Some species of

, the abode also of the Holothurians

.Entoconchacurious

glabra Eulima

parasiticus ochliolepisC

Stimpson has named a parasitic mollusk

which lives parasiticus ochliolepisC

beneath the scales of an annelid. Ovula

are found only upon OvulaMany species of

Infects the crystallinus Capulus; Gorgonioe

rays of starfish.

Odostomia

are said to occur OdostomiaOne or two species of

.Pectenon

Pedicularia

The little Pedicularia lives parasitic upon

corals.

Pecten shells or scallops

californi Pedicularia Pedicularia pacifica

, Coralliophila, RhizochilusAnd the species o

are invariably Magilusand , Leptoconcha, Cryptobia

found in or upon coarals, but to what extent they

may be regarded as truly parasitic not as yet been

determined.

is said to perspicua LamellariaThe female of

Ascidiandeposit its eggs in a compound

).Leptoclinum(

bilineata Eulima –Two parasitic gastropod species

are –1844 Hanley, turrita Odostomiaand 1848 Alder,

recorded for the first time from the Murman coast of

the Barents Sea. Brief species descriptions and their

differences from similar species

are provided.

Certain hypotheses on frequent findings

of new species on the Murman coast are discussed.

bilineata Eulima turrita Odostomia