The amazing sponge Why do they matter p

p Fun Facts • Sponges can trap 90 percent of all bacteria in the

Symbiosis in Sponges • What is symbiosis? ? • Two or more organisms whose

Sp Symbiosis • Algae living inside some sponges provide sugars to their host sponge.

f Chemical Warfare • Many sponges have chemical defence mechanisms that help protect them

When would a sponge use chemical defence? You tell me? Spatial competition Repel predators

Chemical warfare-human uses • Sponges use chemicals to prevent other sponges from growing near

Brainstorm • Why have sponges developed such a rich array of chemical defenses? •

Species examination: Fire Sponge Tedania ignis

Fire Sponge: Tedania ignis • found in western Atlantic and Caribbean coastal waters. •

Habitat • The range of T. ignis extends from Florida to Brazil, Bermuda and

Community and ecology • Little is known about the maximum age and average lifespan

• Predators: Although the color and chemical compounds of T. ignis appear to

Human uses • In 1984, a potent antitumor compound, known as tedanolide, was isolated

Porifera Muscular & Example Skeletal Phyla s System/ Body Plan -Collar cells (with flagella)

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The amazing sponge! (Why do they matter? )

p Fun Facts • Sponges can trap 90 percent of all bacteria in the water they filter. • Sponges can pump 10, 000 times their own size (volume) in water in one day. • A sponge the size of a gallon milk container could pump and clean enough water to fill a residential swimming pool in one day. • In the Caribbean Sea, sponges might be able to filter all of the water in one day.

Symbiosis in Sponges • What is symbiosis? ? • Two or more organisms whose relationships are mutually beneficial. • Give me some examples for the sponge!

Sp Symbiosis • Algae living inside some sponges provide sugars to their host sponge. The sponge provides a safe home. • Without sunlight, these sponges would die. • Within a single sponge, it is possible to find 16, 000 other animals. Tiny shrimps and amphipods are particularly common in sponges.

f Chemical Warfare • Many sponges have chemical defence mechanisms that help protect them against certain bacteria. • They produce toxins or unpleasant tastes and odours that ward off predators or prevent coral overgrowth that could threaten the sponge's osculum or other systems

When would a sponge use chemical defence? You tell me? Spatial competition Repel predators Prevent infection of wounds • Control bacterial levels • •

Chemical warfare-human uses • Sponges use chemicals to prevent other sponges from growing near them. • Some sponges actually kill corals and destroy their skeletons. • These chemicals can prevent cancer cells from growing. • One of the first drugs for treating cancer cytosine arabinoside, was isolated from the sponge Tectitethya crypta. • This drug is used today in chemotherapy to treat leukemia.

Brainstorm • Why have sponges developed such a rich array of chemical defenses? • Because they are sessile and cannot “run away” or otherwise deter predators or compete for space.

Species examination: Fire Sponge Tedania ignis

Fire Sponge: Tedania ignis • found in western Atlantic and Caribbean coastal waters. • named for the burning sensation and rash it produces when touched

Fire coral wound

Habitat • The range of T. ignis extends from Florida to Brazil, Bermuda and the Gulf of Mexico. • Masses of the sponge can be found on rocks, dead coral, in seagrass beds and on the roots of the red mangrove

Community and ecology • Little is known about the maximum age and average lifespan of T. ignis colonies. • Feeding Like other sponges, T. ignis is a filter feeder. The sponge draws in water through incurrent pores using flagellated cells called choanocytes Suspended particles between 0. 1 and 1. 5 µm are taken in, mostly consisting of bacteria and other organic material.

• Predators: Although the color and chemical compounds of T. ignis appear to act as predation deterrents, a few species find the sponge palatable, including: parrotfish; the cushioned sea star, and the gray angelfish.

Human uses • In 1984, a potent antitumor compound, known as tedanolide, was isolated from the fire sponge. Over the past 20 years, the growing interest in this chemical compound has prompted the total synthesis of tedanolide for use in clinical trials, no longer requiring the use of the sponge for compound production. • . . Lesson VideosBiology 11Deep Sea Discovery Could Cure Cancer. flv http: /

Porifera Muscular & Example Skeletal Phyla s System/ Body Plan -Collar cells (with flagella) gather water into osculum - Ameobocyte cells produce spicules -Sponge (Ca. CO 3/ Si. O 2) -Spongin(fibre of protein) No true tissues Digestion/ Feeding Circulation / internal transport Respiration Excretion Reproducti on -Sperm released into water -Filter flowing feeder through (current) sponge -Current and carry Endocytosis -Current carry into open of food by delivery O 2 away water collar cells, and carry metaboli away CO 2 away waste -Eggs kept then pass c waste onto inside body wall amebocytes Intracellular Gemmules & budding (asexual) Nervous/ Sensory/ Other Defense Interesti ng Points Response -No nervous system -May release toxins Symbioti c with bacteria and protists -Clean up ocean floors