1. intro sponges jellies anemones
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Transcript of 1. intro sponges jellies anemones
Between the Tides
Schedule
• January 11 Introduction, Sponges, Jellies and Anemones
• January 18 Inter-tidal Pools – Harling Point / Trafalgar Park
• 0.3 M tide at 20:30• January 25 Flat Worms and Worms
with Legs
Schedule
• February 1 Chitons, Limpets and Snails
• February 8 Clams and Octopus• February 15 Inter-tidal Pools –
Smugglers Cove. 0.5 M tide at 19:30
• February 22 Animals that are moss like, clam like, worm like but are not
Schedule
• March 1 Crabs of all kinds• March 8 Sea Stars, Sea Urchins
and Sea Cucumbers• March 15 Inter-tidal Pools – Clover
Point. 0.8 M tide at 19:00
What to Bring Inter-tidalling
• Rubber Boots• Wear warm clothes and bring an extra pair of socks just
in case• Rain jacket and rain pants (if you have them). Some ski
pants work well also• Hat and gloves• Flash light and head lamp (if you have one)• Bucket or pail with a lid (e.g. ice cream buckets with a
handle)• Camera (but remember there is a good chance it may
get wet)
The SpongesPhylum Porifera
The Sponges: Phylum Porifera
e.g. Haliclona sp
• Multicellular• No tissues• Sessile • Filter feeders
The Sponges: Phylum Porifera
• Characterized by their spicules– Calcium– Spongin– silica
The Sponges: Phylum Porifera Filter Feeders
Filtering Barrel and Chimney Sponges.flv
The Sponges: Phylum Porifera
Sessile?
Not Always
Thanks to their symbiotic friend the Hermit crab
The Sponges: Phylum PoriferaSponges: defense
• many sponges produce toxins and have bright warning colouration
• some sponge toxins work against other sponges competing for space
The Sponges: Phylum Porifera
The Sponges: Phylum Porifera
• Glass Sponge Reefs
The Sponges: Phylum Porifera Our Reefs
Sea Anemone and JelliesPhylum Cnidaria
Sea Anemone and JelliesPhylum Cnidaria
Sea Anemone and Jellies - Phylum CnidariaClass Scyphozoa
Sea Anemone and Jellies - Phylum CnidariaClass Scyphozoa
Sea Anemone and Jellies - Phylum CnidariaClass Scyphozoa
Alternations of Generations
Sea Anemone and Jellies - Phylum Cnidaria Class Hydrozoa
Sea Anemone and Jellies - Phylum Cnidaria Class Hydrozoa
Sea Anemone and Jellies - Phylum Cnidaria
Sea Anemone and Jellies - Phylum Cnidaria Class Anthozoa
• Jellies not present during their lifecycle
• Have stinging cells called nematocysts
• Carnivores• Can move on their
pedal foot and some can swim.
• Corals also found within this class
Anemone Reproduction
Sea Anemone and Jellies - Phylum Cnidaria
Class AnthozoaSplitting Anemone
Sea Anemone and Jellies - Phylum Cnidaria
Class AnthozoaSwimming Anemone