04a origen metazoa-coanoflagelados

7/24/2019 04a ORIGEN METAZOA-Coanoflagelados

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VertebrataUrochordataCephalochordataPterobranchiaEnteropneustaEchinodermata

BrachiopodaPhoronida

Chaetognatha

LoriciferaKinorhynchaPriapulaNematomorphaNematodaTardigradaOnychophoraArthropoda

BryozoaCycliophoraEntoproctaRotiferaMicrognathozoaGnathostomulidaGastrotrichaPlatyhelminthesNemertiniMolluscaSipunculaAnnelidaXenoturbellidaNemertodermatidaAcoelaCtenophoraCnidariaPlacozoaHomoscleromorphaCalcareaSiliceaChoanoflagellata

AB

C

D

E

F

G

H

I

KK

L

M

N

O

P

Q

R

SU

V

X Y

AnimaliaEuradiculataProepitheliozoa

EumetazoaNeuraliaTriploblasticaBilateriaAcoelomorphaEubilateriaProtostomiaSpiraliaSchizocoelia

GnathiferaPolyzoaBrachiozoaEcdysozoaPanarthropodaCycloneuraliaNematoideaScalidophoraDeuterostomiaAmbulacraria

HemichordataChordata

Z

A -

B -C -D -E -F -G -H-I -K -L -

M -N -O -P -Q -R -S -T -U -

V -X -Y -Z -

T

The animal hylo eny ro osedin this book; the methodis described in the text.Named su ra h.

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Vertebrata

UrochordataCephalochordataPterobranchiaEnteropneustaEchinodermata


Chaetognatha



AB

C

D

E

F

G

H

I

KK

L

M

N

O

P

Q

R

SU

V

X Y

Animalia

EuradiculataProepitheliozoaEumetazoaNeuraliaTriploblasticaBilateriaAcoelomorphaEubilateriaProtostomia

SpiraliaSchizocoeliaGnathiferaPolyzoaBrachiozoaEcdysozoaPanarthropodaCycloneuraliaNematoideaScalidophora

DeuterostomiaAmbulacrariaHemichordataChordata

Z

A -

B -C -D -E -F -G -H-

I -K -L -M -N -O -P -Q -R -S -

T -U -V -X -Y -Z -

T

The animal hylo eny ro osedin this book; the methodis described in the text.Named su ra h.

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Chaetognatha



AB

C

D

E

F

G

H

I

KK

L

M

N

O

P

Q

R

SU

V

X Y

AnimaliaEuradiculataProepitheliozoa

EumetazoaNeuraliaTriploblasticaBilateriaAcoelomorphaEubilateriaProtostomiaSpiraliaSchizocoeliaGnathifera

PolyzoaBrachiozoaEcdysozoaPanarthropodaCycloneuraliaNematoideaScalidophoraDeuterostomiaAmbulacraria

HemichordataChordata

Z

A -B -

C -D -E -F -G -H-I -K -L -

M -N -O -P -Q -R -S -T -U -V -

X -Y -Z -

T

T ..

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Chaetognatha

Loricifera

KinorhynchaPriapulaNematomorphaNematodaTardigradaOnychophoraArthropoda

BryozoaCycliophora

EntoproctaRotiferaMicrognathozoaGnathostomulidaGastrotrichaPlatyhelminthesNemertiniMolluscaSipunculaAnnelidaXenoturbellidaNemertodermatidaAcoelaCtenophoraCnidariaPlacozoaHomoscleromorphaCalcareaSiliceaChoanoflagellata

AB

C

D

E

F

G

H

I

KK

L

M

N

O

P

Q

R

SU

V

X Y

AnimaliaEuradiculataProepitheliozoaEumetazoaNeuraliaTriploblastica

BilateriaAcoelomorphaEubilateriaProtostomiaSpiraliaSchizocoeliaGnathiferaPolyzoaBrachiozoaEcdysozoa

Panarthropoda

CycloneuraliaNematoideaScalidophoraDeuterostomiaAmbulacrariaHemichordataChordata

Z

A -B -C -D -

E -F -G -H-I -K -L -M -N -O -

P -Q -R -

S -T -U -V -X -Y -

Z -

T

T ..


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Choanoblastaea Advancedchoanoblastaea

Choanoflagellate

A

occluding junction

circumblastoporalnerve

sensory cellgerm cells

cadherins

mitosis

basementmembrane

nervewater current

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Ancestral sponge

Primitive sponge

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choanoblastaea

Choanoflagellate

A

occluding junction


sensory cellgerm cells

cadherins

mitosis

basementmembrane

nervewater current

.. . . .


12/29

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Advancedchoanoblastaea

Ancestral sponge


sensory cell

nerve

Primitive sponge

. ,, . . . , .

< 43.?o/7 .?6230 ,34/]./?6.7

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l

l a

l ll

Ancestral sponge

Primitive sponge

l

l li i l

l i

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ll a

l ll

Ancestral sponge

Primitive sponge

l li i l

>3('+


13/29

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Choanoblastaea Advanced

choanoblastaea

Choanoflagellate

Ancestralspongeoccludingjunction


sensorycellgerm cells

cadherins

mitosis

basementmembrane

nervewater current

Primitivesponge

. h l ut i n r n r i t t . h t r u rr n t r i n i t it h l u r r , th n t r n ir , n th n r u ll r n . h u l l l f th tr h n itt f r l rit . i ur . , .

Modern

homoscleromorph

B

Homoscleromorph-like

ancestor withgastrulalarvaand dissogony

Gastraea

Neurogastraea

Thisgradeis

represented

by Trichoplax

Thisgradeis

represented

byCnidaria

>3('+

< 43.?o/7 .?6230 ,34/]./?6.7

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Choanoblastaea Advancedchoanoblastaea

Choanoflagellate


circumblastoporal

nerve


cadherins

mitosis

basement

membrane

nervewater current

Primitivesponge


Modernhomoscleromorph

B

Homoscleromorph-like

ancestor withgastrulalarvaand dissogony

Gastraea

Neurogastraea

Thisgradeis

represented

by Trichoplax

Thisgradeis

represented

byCnidaria

>3('+

< 43.?o/7 .?6230 ,34/]./?6.7

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!= D

Choanoblastaea Advanced

choanoblastaea

Choanoflagellate




cadherins

mitosis

basementmembrane

nervewater current

Primitivesponge


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B

Homoscleromorph-likeancestor withgastrula

larvaand dissogony

Gastraea

Neurogastraea

Thisgradeis

represented

by Trichoplax

Thisgradeis

represented

byCnidaria

>3('+


14/29

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. Generalized cell lineage of an annelid.(Based on Podarkeand Arenicola; Child ; Treadwell ).See Figure .,.

{

1a1

1a2

1a

2a11

2a122a1

2a2

2a

3a

3A

2A

1A

A

1a12

1a111a111

1a121

1a122

1a112

B

C

D

1d

1d11d11

1d111

1d112

1d12

1d2

2d2

2D3d

4d

4D3D

apical cell

1D

prostomial ectoderm

prostomial ectoderm

accessory trochoblast

AB

Z

primary trochoblast

ectomesoderm

as A, except that the right cerebral ganglion develops from 1c 112,

there is no ectomesoderm from the B-quadrant, and that theectomesoderm originates from 3c21in the C-quadrant

prostomial ectoderm

primary trochoblast

CD

endoderm

apical cell

1a1222

1a1221 prostomial ectoderm

2a111

2a112

2a121

2a122

ectoderm

secondary trochoblast

secondary trochoblast

ectoderm

ectoderm

3a1 ectoderm

3a23a21

3a223a221

3a222stomodaeum

stomodaeum

endoderm

prostomial ectoderm

2d111 ectoderm

2d112 somatoblast2d11

2d12 ectoderm, telotroch

2d1

2d21 ectoderm, telotroch

2d22 ectoderm, proctodaeum, ectomesoderm

2d

ectoderm, proctodaeum, ectomesoderm

mesoderm, endoderm

{

{{

{{

{

{

{ {

{

{{

{{ { {{ {

{

{

{{

{{

{

apical ganglion

apical ganglion

cerebral ganglia

circumblastoporalnerve cord, incl.posterior part ofbrain

{

{

{


17/29

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r r r r r r , rr r . r r r r r

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, rr , r , r ,, , r , ,

r , , r , r, . r r r r r

r . r . , .

Branchiostoma

Saccoglossus

Nematostella

Symsagittifera

Xenoturbella

Capitella

Tribolium

Priapulus

lab pb Hox3 Dfd Scr

Lox2 Lox4 Post1 Post2

Pecten

Spiralia

Platyhelminthes

Lingula

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Strongylocentrotus

Ambulacraria9/10 11/13 abc

Eubilateria Deuterostomia Chordata

Mus

? ? ? ? ?

EcdysozoaUbx abd-A abd-B

ProtostomiaLox5 Antp

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@'1 4(3/[email protected]?6.? K>?.04@4.@;/:JM /N679 /7 C3**/7 .4(3? /783:47 .> E3F3*.8,304D 5(3 7/,3:.073?F3E 2303I: 034C.?J 2.F3?07 4(3E3F3*.8,304 .> ;.4( / 1) /0E / (+,/09E378643 4(36? .;F6.+7 E6\3?30:37 /0E(+0E?3E7 .> ,6**6.07 .> )3/?7 .> E6F3?23043F.*+I.0D


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