Phylum: Porifera

Prepared Slides:

Scypha

Group: Calcarea

Image Magnification: 10x

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Commercial Sponge Fibers

Group: Demospongiae

Image Magnification: 10x

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Grantia

Group: Calcarea

Image Magnification: 10x

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Spongilla Gemmules

Group: Demospongiae

Image Magnification: 10x

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Function’s of Labeled Structures

Osculum: A large opening to the outside through which the current of water exits after passing through the spongocoel

Spicules– Small, spike shaped particles of calcium carbonate or silicon dioxide that make up the skeleton of some sponges

Choanocytes– Specialized cell in sponges that uses a flagellum to move a steady current of water through the sponge

Dermal OstiaIncurrent pores in a sponge

Spongocoel– Large central cavity of the sponge

Pinacocytes– Flattened cells composing dermal epithelium in sponges

Myocytes– Modified pinacocytes which contract to regulate water flow out of the osculum

Porocytes- Tubular cells that allow water to flow from the outside of the sponge to its central cavity

Monaxon– Straight needle like structures that grow along the surface

Amoebocytes– Several types each with a specific function such as regeneration, secretion, mobility

Micopyle Releases amoebocytes, which differentiate into cells of all the other types.

Spongocoel- The Central cavity of a sponge, which opens to the outside by way of the osculum

Aquiferous System– Combines pumping and food capturing choanocytes with a variety of canals, chambers, and spaces through which water flows.

Mesohyl The gelatinous matrix within a sponge, filling the space between the external pinacoderm and the internal choanoderm.

Sclerosponges– Sponges with a soft body that covers a hard, often massive skeleton made of calcium carbonate, either aragonite or calcite

Archeocytes– Totipotent cells that function as organ systems

Spongin– a modified type of collagen protein, forms the fibrous skeleton of porifera

Schlerocytes– They secrete calcareous or siliceous spicules which are found in the mesohyl layer of sponges

Gemmules–  Are internal buds found in sponges and are involved in asexual reproduction

Totipotent– Capable of developing into a complete organism or differentiating into any of its cells or tissues

Asconoid– The Tube or vase body structure of a sponge

Syconoid– Body wall of a sponge being pleated

Leuconoid– A pattern that boosts pumping capacity further by filling the interior almost completely with mesohyl

Live Specimens

Boring Sponge

Group: Cliona celata

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Orange Devils Finger

Group: Axinella polycapella

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Blue Sponge

Group: Dysidea camera

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Crumb-Of-Bread Sponge

Group: Halichondria bowerbanki

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Red Beard Sponge

Group: Microciona prolifera

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Preserved Specimens

Grantia

Dried Sponges

Clam Shell with Boring Sponge Damage

 

 

 

 

 

 

 

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