lamellibranch ctenidium

mollusk

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June 30, 2026

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The term "lamellibranch ctenidium" refers to the gills of a mollusk, specifically a bivalve. These gills, also known as ctenidia, are feather-like or comb-like structures that play a crucial role in respiration and filter-feeding.12

In most bivalves, the ctenidia are adapted for filter-feeding, sifting food particles from the water that flows through the mantle cavity. The structure of the ctenidia has evolved to increase surface area for efficient oxygen absorption and food collection. Some bivalves have specialized ctenidia, such as the "septibranch" ctenidium in deep-sea predators, which helps create water currents to capture prey.342

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bivalve
Internal features
…best explained by the term lamellibranch. The lamellibranch structure may be further qualified as filibranch, pseudolamellibranch, or eulamellibranch. In filibranchs the filaments are only weakly united by cilia, and often the ctenidium retains some inherent sorting mechanism. Collection and sorting of potential food has not yet been definitively ascribed to…
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…best explained by the term lamellibranch. The lamellibranch structure may be further qualified as filibranch, pseudolamellibranch, or eulamellibranch. In filibranchs the filaments are only weakly united by cilia, and often the ctenidium retains some inherent sorting mechanism. Collection and sorting of potential food has not yet been definitively ascribed to…
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