ULTRASTRUCTURE OF POLAR LOBES IN EGGS OF THE FRESHWATER PROSOBRANCH GASTROPOD AMNICOLA LIMOSA

CRAIG, MICHAEL M.; CATHER, JAMES N.

doi:10.1093/oxfordjournals.mollus.a065681

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ULTRASTRUCTURE OF POLAR LOBES IN EGGS OF THE FRESHWATER PROSOBRANCH GASTROPOD AMNICOLA LIMOSA

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Abstract

The structure of polar lobes in eggs of the freshwater prosobranch gastropod Amnicola limosa has been studied by light microscopy and by transmission electron microscopy. A cytoplasmic localization, discovered within the lobes, is described. Its morphology and subsequent pattern of dispersal are similar to that of the vegetal body in the polar lobes of Bithynia tentaculata.

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ULTRASTRUCTURE OF POLAR LOBES IN EGGS OF THE FRESHWATER PROSOBRANCH GASTROPOD AMNICOLA LIMOSA

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ULTRASTRUCTURE OF POLAR LOBES IN EGGS OF THE FRESHWATER PROSOBRANCH GASTROPOD AMNICOLA LIMOSA

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