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Radiate Phyla
Radiate Phyla
Protostomes
Protostomes
The Basics
The Basics
Radial Symmetry
Radial Symmetry
CNIDARIA: HYDROZOA HYDRA SP
CNIDARIA: HYDROZOA HYDRA SP
HYDRA SP
HYDRA SP
MEDITERANIAN JELLYFISH: MEDUSA FORM Cassiopea frondosa
MEDITERANIAN JELLYFISH: MEDUSA FORM Cassiopea frondosa
Tissue Layers
Tissue Layers
General Body Plan
General Body Plan
Dimorphic life cycle
Dimorphic life cycle
Radiate Phyla
Radiate Phyla
HYDRA SP
HYDRA SP
Nematocysts
Nematocysts
Nematocysts
Nematocysts
HYDRA SP
HYDRA SP
DS
DS
A
A
A
A
Biology
Biology
Structure
Structure
Reproduction
Reproduction
Reproduction
Reproduction
General Life Cycle
General Life Cycle
Phylum Cnidaria
Phylum Cnidaria
Class Hydrozoa
Class Hydrozoa
Class Hydrozoa
Class Hydrozoa
Class Hydrozoa
Class Hydrozoa
Class Hydrozoa Obelia
Class Hydrozoa Obelia
Class Hydrozoa
Class Hydrozoa
Fire coral Millepora
Fire coral Millepora
Radiate Phyla
Radiate Phyla
Fire coral Millepora victim
Fire coral Millepora victim
Class Hydrozoa- life cycle Obelia
Class Hydrozoa- life cycle Obelia
Class Hydrozoa
Class Hydrozoa
Class Hydrozoa
Class Hydrozoa
Oklahoma Hydrozoans
Oklahoma Hydrozoans
Chlorohydra viridissima: The Green Hydra The green color arises from
Chlorohydra viridissima: The Green Hydra The green color arises from
Hydra vulgaris The common Hydra
Hydra vulgaris The common Hydra
Radiate Phyla
Radiate Phyla
Radiate Phyla
Radiate Phyla
Craspedacusta sowerbii
Craspedacusta sowerbii
Lives predominantly as a polyp in small lakes, ponds, and old water
Lives predominantly as a polyp in small lakes, ponds, and old water
Polypodium hydriforme The most bizarre of the freshwater cnidarians
Polypodium hydriforme The most bizarre of the freshwater cnidarians
Polypodium spends almost all of its pre-adult life as a parasite of
Polypodium spends almost all of its pre-adult life as a parasite of
Radiate Phyla
Radiate Phyla
Radiate Phyla
Radiate Phyla
LIFE CYCLE
LIFE CYCLE
Class Scyphozoa
Class Scyphozoa
Class Scyphozoa- life cycle
Class Scyphozoa- life cycle
Jellyfish Diversity
Jellyfish Diversity
Primitive jellyfish: Stauromedusae
Primitive jellyfish: Stauromedusae
Jellyfish Diversity
Jellyfish Diversity
Rhizostomae jellyfish: lack a central mouth, instead they have many
Rhizostomae jellyfish: lack a central mouth, instead they have many
Rhizostomae jellyfish: lack a central mouth, instead they have many
Rhizostomae jellyfish: lack a central mouth, instead they have many
Cassiopea: a small tropical jellyfish is unusual among jellyfish
Cassiopea: a small tropical jellyfish is unusual among jellyfish
Rhizostoma octopus
Rhizostoma octopus
Semaeostomae the typical jellyfish: corner of mouth drawn out into
Semaeostomae the typical jellyfish: corner of mouth drawn out into
Semaeostomae the typical jellyfish
Semaeostomae the typical jellyfish
Cyanea capillata the Giant Jellyfish or Lion's Mane Jellyfish Can be
Cyanea capillata the Giant Jellyfish or Lion's Mane Jellyfish Can be

Презентация на тему: «Radiate Phyla». Автор: matt bolek. Файл: «Radiate Phyla.PPT». Размер zip-архива: 8925 КБ.

Radiate Phyla

содержание презентации «Radiate Phyla.PPT»
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1 Radiate Phyla

Radiate Phyla

Chapter 7

2 Protostomes

Protostomes

Deuterostomes

Eumetazoa

Metazoa

Protozoa

Monera (Bacteria)

Crustacea

Vertebrata

Arachnida

Tunicata

Insecta

Hemi- chordata

Mollusca

Annelida

Echinodermata

Cnidaria

Ctenophora

Chordata

Arthropoda

Pseudocoelomates

Coelomates

Acoelomates

Bilateria†

Radiata*

Mesozoa

Parazoa

† Triploblasts * Diploblasts

3 The Basics

The Basics

Radial symmetry Diploblastic Dimorphic life cycle Polyps medusae Gastrovascular cavity Blind sac

4 Radial Symmetry

Radial Symmetry

5 CNIDARIA: HYDROZOA HYDRA SP

CNIDARIA: HYDROZOA HYDRA SP

BUDDING FROM LINCOLN NEBRASKA: POLYP FORM

6 HYDRA SP

HYDRA SP

TOP VIEW

7 MEDITERANIAN JELLYFISH: MEDUSA FORM Cassiopea frondosa

MEDITERANIAN JELLYFISH: MEDUSA FORM Cassiopea frondosa

8 Tissue Layers

Tissue Layers

Diploblastic = 2 germ layers endoderm ? gastrodermis ectoderm ? epidermis mesoglea gelatinous matrix between the 2 layers

gastrovascular cavity

epidermis

mesoglea

gastrodermis

9 General Body Plan

General Body Plan

sac-like body (only 1 opening) Food and waste go in/out the same opening ? no anus! water within GVC acts as a hydrostatic skeleton

oral surface

mouth

gastrodermis

Gastrovascular cavity

mesoglea

epidermis

aboral surface

10 Dimorphic life cycle

Dimorphic life cycle

Polyp Medusa

Tentacle

Gastrovascular cavity

Tentacle

11 Radiate Phyla

Radiate Phyla

p. Cnidaria c. Hydrozoa c. Scypozoa c. Cubozoa c. Anthozoa p. Ctenophora

12 HYDRA SP

HYDRA SP

FEEDING

A

B

C

D

13 Nematocysts

Nematocysts

specialized stinging organelles found within cnidocytes (cells) cnidocytes are located in epidermis

A cnidocyte with a nematocyst within it

14 Nematocysts

Nematocysts

nematocysts are like “mini-harpoons” cnidocil senses movement & acts like a “trigger” can inject poison, coil around prey, or be adhesive functions: - prey capture; defense

nematocyst

cnidocil

cnidocyte

Undischarged

Discharged

15 HYDRA SP

HYDRA SP

UNDISCHARGED STENOTELE NEMATOCYSTS

16 DS

DS

DS

HYDRA SP. UNDISCHARGED AND DISCHARGED STENOTELE NEMATOCYSTS

17 A

A

S

HYDRA SP. UNDISCHARGED STENOTELE AND ATRICHOUS ISORHIZA NEMATOCYSTS

18 A

A

S

HYDRA SP. DISCHARGED STENOTELE AND ATRICHOUS ISORHIZA NEMATOCYSTS

19 Biology

Biology

Feeding nematocysts within cnidocytes tentacles Digestion extracellular (in GVC) intracellular (by gastrodermal cells) incomplete system (no anus) Gas exchange & Excretion these systems are absent

20 Structure

Structure

Nervous System nerve net (no central nervous system= no brain) sense organs statocysts (equilibrium organs) ocelli (photosensitive organs) Skeletal System Mesoglea, water in GVC acts as a hydrostatic skeleton, and some external skeletal system.

21 Reproduction

Reproduction

Reproduction Asexual budding longitudinal fission

22 Reproduction

Reproduction

Reproduction Sexual usually dioecious (separate sexes? e.g. humans) monoecious (both male + female gonads in 1 individual) results in Planula larva

23 General Life Cycle

General Life Cycle

24 Phylum Cnidaria

Phylum Cnidaria

Class Hydrozoa: Freshwater (Hydra) and marine (Fire Corals). Class Scyphozoa: Jellyfish, all marine. Class Anthozoa: Corals and Anemones, all marine. Class Cubozoa: Box jellyfish and sea wasps, all marine.

25 Class Hydrozoa

Class Hydrozoa

medusa & polyp body forms mostly marine but some fresh water

Fire coral Millepora

26 Class Hydrozoa

Class Hydrozoa

medusa & polyp body forms (medusa with velum) most are colonial ? colonies are formed of individual zooids

a single zooid

27 Class Hydrozoa

Class Hydrozoa

many of these colonies show polymorphism ? this is where there are several different types of polyps/zooid and each type is specialized for a different function e.g. gastrozooids = feeding polyps e.g. dactylzooids = defense polyps ? all the zooids within a colony are genetically identical ? these different zooids work together in the colony

28 Class Hydrozoa Obelia

Class Hydrozoa Obelia

- a sessile colony showing polymorphism

gonozooid

entire colony

gastrozooid

29 Class Hydrozoa

Class Hydrozoa

- a Portugese Man-o-war (Physalia) is a floating hydrozoan colony showing polymorphism

Float

entire colony

gastrozooid

dactylzooid

30 Fire coral Millepora

Fire coral Millepora

31 Radiate Phyla
32 Fire coral Millepora victim

Fire coral Millepora victim

33 Class Hydrozoa- life cycle Obelia

Class Hydrozoa- life cycle Obelia

asexual reproduction

sexual reproduction

34 Class Hydrozoa

Class Hydrozoa

No Medusa Stage

Hydra is an example of a solitary, freshwater hydrozoan

gonads

bud

sexual reproduction

asexual reproduction

35 Class Hydrozoa

Class Hydrozoa

Hydra is an example of a solitary, freshwater hydrozoan

36 Oklahoma Hydrozoans

Oklahoma Hydrozoans

37 Chlorohydra viridissima: The Green Hydra The green color arises from

Chlorohydra viridissima: The Green Hydra The green color arises from

Chlorella-like unicellular algae each occupying a vacuole in the endodermal cells.

38 Hydra vulgaris The common Hydra

Hydra vulgaris The common Hydra

39 Radiate Phyla
40 Radiate Phyla
41 Craspedacusta sowerbii

Craspedacusta sowerbii

Velum

42 Lives predominantly as a polyp in small lakes, ponds, and old water

Lives predominantly as a polyp in small lakes, ponds, and old water

filled quarries the medusa stage occurs during July-October.

43 Polypodium hydriforme The most bizarre of the freshwater cnidarians

Polypodium hydriforme The most bizarre of the freshwater cnidarians

and one of the most unusual species of ALL Cnidarians!!

44 Polypodium spends almost all of its pre-adult life as a parasite of

Polypodium spends almost all of its pre-adult life as a parasite of

Acipenseriform fishes.

45 Radiate Phyla
46 Radiate Phyla
47 LIFE CYCLE

LIFE CYCLE

48 Class Scyphozoa

Class Scyphozoa

“true” jellyfish medusa & polyp body forms thick mesoglea

49 Class Scyphozoa- life cycle

Class Scyphozoa- life cycle

sperm

egg

ephyra

Adult medusa

Larva Planula (Ciliated)

strobila

Scyphistoma Polyp

50 Jellyfish Diversity

Jellyfish Diversity

51 Primitive jellyfish: Stauromedusae

Primitive jellyfish: Stauromedusae

52 Jellyfish Diversity

Jellyfish Diversity

Primitive jellyfish: Stauromedusae; small sessile individuals that develop directly from benthic planula larvae. Can change locations, but normally attached with stalk and adhesive pad to solid objects like kelp and rocks.

53 Rhizostomae jellyfish: lack a central mouth, instead they have many

Rhizostomae jellyfish: lack a central mouth, instead they have many

suctorial “mouths”

54 Rhizostomae jellyfish: lack a central mouth, instead they have many

Rhizostomae jellyfish: lack a central mouth, instead they have many

suctorial “mouths”

55 Cassiopea: a small tropical jellyfish is unusual among jellyfish

Cassiopea: a small tropical jellyfish is unusual among jellyfish

It lies on the bottom in shallow waters, with its mouth at tentacles oriented upwards. Its mouth is much reduced, and is not much used. Instead, the jellyfish gets most of the nutrition it needs from symbiotic dinoflagellates which live inside its body tissues.

56 Rhizostoma octopus

Rhizostoma octopus

57 Semaeostomae the typical jellyfish: corner of mouth drawn out into

Semaeostomae the typical jellyfish: corner of mouth drawn out into

four broad gelatinous frilly lobes.

Aurelia sp.

58 Semaeostomae the typical jellyfish

Semaeostomae the typical jellyfish

59 Cyanea capillata the Giant Jellyfish or Lion's Mane Jellyfish Can be

Cyanea capillata the Giant Jellyfish or Lion's Mane Jellyfish Can be

over 1 meter across and its trailing tentacles can reach more than 10 meters in length.

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