Honors Marine Biology

October 11, 2012

Module 3: Mangroves

Module 4

Class Challenge

Quiz

Sara Kane from the Sarasota Bay Estuary Program spoke with our class last week.

Write in complete sentences the significance of this program and 3 additional things that this program has accomplished since its inception in 1989.

Mangroves

Like the salt water marsh plants, Mangroves are salt-tolerant plants.

They cannot tolerate frost and are therefore found in the tropics and sub-tropic areas.

4 Types of Mangroves

1. The White Mangrove

2. The Red Mangrove

3. The Black Mangrove

4. The Buttonwood Mangrove

See Mangrove Videos

http://youtu.be/mp8OVu24BSE

http://youtu.be/Vonk499HgAY

http://youtu.be/atMnKyKcZV8

http://youtu.be/kR6-RUeNrQg http://youtu.be/9SMM7x7qKE4

Marine Invertebrates I

Invertebrates: Animals that do not possess a backbone.

Vertebrates: Animals that possess a backbone.

Sponges

Lab: Diagram of a Sponge

Figure 4.2 page 78

Sponge Body Types

Figure 4.3

Ascon

Sycon

Leucon

Sponge Spicule

Larger and more complex sponges are beg enough to require a form of support. Some have a network of SPICULES made of calcium carbonate or silica.

These form the “skeleton” of the larger sponges, supporting them so they stand upright in the water.

Sponge Classification

In order to classify sponges, a marine biologist often looks at the sponge’s unique spicule shape rather than looking at a sponge’s overall appearance.

Sponges

• Spongin: Web-like skeleton of elastic protein fibers.

• Amoebocytes: Cells within a sponge that produce its skeletal, perform digestion, and cell damage.

• Gemmule: A group of cells surrounded by a shell made of spicules.

• Larva: An immature stage of an animal that appears different from the adult stage.

• Metamorphosis: A complete morphological change from larval to adult form.

Cnidaria

• Also know as coelenterates.

• Contain a coel, a large body cavity.

• Jellyfish, corals, sea aneomones.

Cnidaria

1. Have specialized tissues that perform specific functions.

2. Have the ability to move in a more intricate way than a sponge.

Cnidaria have a form of Symmetry

The three body types:

1. Spherical symmetry: A body form in which any cut through the organism’s center results in identical halves.

2. Radial Symmetry: A body form in which any longitudinal cut (along the length) through the organism’s central axis results in identical halves.

3. Bilateral Symmetry: A body form in which only one longitudinal cut through the organism’s center results in identical halves.

CnidarianCnidarians display radial symmetry, having

no true head, front, or back.

The only differentiation in these animals is that they have a side with a mouth – an oral side – and an opposite side – an aboral side.

Organisms in this phylum have one of two basic body forms: Polyp or Medusa. (figure 4.6)

Life Cycle of Cnidarians

See figure 4.7

HomeworkRead pages 87 – 93

Answer OYO questions 4.5 – 4.11

Study Guide Questions: define m – q

12 – 22.

Finish Lab books

Quiz: Know the 3 species of Mangroves.

What is a Spicula on a sponge?

Define a color cell on a sponge.

Class Challenge: