anguina plataginis

8/19/2019 Anguina plataginis

1/15

A n g u i n a p l a n t a g i n i s n s p P a r a s it i

w i t h a D e s c r ip t io n o f Its D e v e

H E D W I G H I R S C H M A N

Abstract: Anguina l lantagi~lis n. sp., parasitic on Plantag

This new species is most closely related to A. klebahni, A

and is characterized as follows: moderate body size f

storage organ ; postvulval uterine sac extendi ng about

formeria of young females longer than spermatotheca

sclerotized thickenings; long, conical tail in both sexes,

to peg-like tip; parasitic only on P. aristata. Two nematod

similar but differ in body size develop in one plan t gall

respect to morphological development of the larval stages


2/15

230

Journa l o[ Nem atology Volum e 9 No . 3 Ju ly 1

W a r d . ; a n d

A. polygoni

P o g h o s s i a n f r o m

Polygonum alpestre

C . A. M . S p e c i e s o c c u r -

r i n g o n d i c o t y l e n d o n o u s p l a n t s , h o w e v e r ,

m a y n o t b e c l o se ly r e l a t e d s in c e t h e y i n f e c t

p l a n t s o f w i d e l y d i f f e r i n g g r o u p s .

T h i s p a p e r d e a ls w i t h t h e d e s c r i p t i o n

a n d p o s t e m b r y o g e n e s i s o f a n e w s p e c i e s ,

A. plantaginis

t h a t c a u s e s f o r m a t i o n o f

g a l l s o n l e a v e s , p e d u n c l e s , a n d i n f l o r -

escences o f Plantago aristata M i c h x . , a

m e m b e r o f t h e P l a n t a g i n a c e a e . B i o l o g i c a l

o b s e r v a t i o n s o f t w o p o p u l a t i o n s o f t h i s

o t h e

i n f e c

e q u a

t h e

m a y

d i f f e

e r a t i

d e s c

a d u l

a b o u

s e c o


3/15

A

ngu i na p l an t ag i n i s n s p D e s c r i p t i o n

B


4/15

2 3 2

Journa l o /Nem ato logy Vo lume 9 No . 3 Ju ly

. i G . ; i i i i : : .

: . :

© : ... ~

~ : : : : : ? } :: . - . :

i . : ~ ; :

/" :'J ,~ ~:::::" .:~::~ :.....~


5/15

. 4 n g u i n a p l a n t a g i n i s

n. sp. Description

heat; not spirally coiled; tail bent back,

sometimes vulva facing outside; obese, first-

generation females largely immobile but

not as plump as those of other members of

genus; second-generation females especially

are actively moving, resemble D i t y l e n c h u s .

Cuticle thin, finely annulated except for

very end of peg-like tail tip which is

smooth. Subcuticle doubly striated. In most

specimens, lateral fields at midbody bas-

ically consist of 4 distinct incisures with 3

finer incisures spaced inbetween. In some

lobe i

extend

lobe. E

with la

duct, 1

= 20)

zonid

annule

tinal

cytopl

only 2

zag. N


6/15

234 Journa l o [ Nemato logy Vo lume 9 No . 3

y o u n g f e m a l e s . U p t o 1 2 e g g s i n u t e r u s a t

o n e t i m e i n f i rs t g e n e r a t i o n f e m a le s . V a g i n a

l e n g t h a p p r o x i m a t e l y 1 / 3 b o d y w i d t h ;

d i l a t i o n c o n t r o l l e d b y 8 c o n s p i c u o u s m u s -

c l e s ( d i l a t o r e s v a g i n a e ) , 4 d i r e c t e d

p o s t e r i a d , 4 a n t e r i a d . T h e y a p p e a r i n s e r t e d

t o b o d y w a l l b e t w e e n s u b v e n t r a l s e c t o r o f

s o m a t i c m u s c l e s a n d l a t e r a l c h o r d . F o u r

c o n s p i c u o u s n u c l e i , 2 e a c h s i t u a t e d a n -

t e r i o r l y a n d p o s t e r i o r l y o f t h e v a g i n a i n

t h e v e n t r o - m e d i a n p l a n e b e l o n g t o t h e

s p h i n c t e r m u s c l e s a r o u n d t h e v a g i n a

July

(77.2

/x m

lengt

ten t

~ m

5.2-7

1.3);

% :

(72.2

D

f e m a


7/15

B

Anguina plantaginis

n . sp . D e s c r i p t i o

A

b e i n g

C l e a v

o l d e r

~NVEC

Me

25): B

~ m -

(25.6

(9.6 /~

or ifi ce

e so ph


8/15

36 Jou rn a l o ] N em a to l o g y , V o l um e 9 , N o . 3 , Ju l y 1

: i V

A l . ~ .l. ~ B

: ~ : 1 7i

~ '~ : ' . b i : :~

b O- :

;% . ' .

b:.gJ

i . . o o . : •

o . :

• . : q ; :

]6 d:':;


9/15

. 4 n g u i n a p l a n t a g i n i s n . sp . D e s c r i p t io

b e n e a t h c u t i c l e . L i p r e g i o n n o t s e t o f f ,

s m o o t h a n d f l a t te n e d i n f r o n t , w i t h w e a k l y

c u t i c u l a r i z e d f r a m e w o r k . S t y l e t w i t h s m a l l

r o u n d e d k n o b s . D o r s a l e s o p h a g e a l g l a n d

o r i fi c e c lo s e b e h i n d s t y l e t k n o b b a se . E s o p h -

a g u s w i t h l o n g n a r r o w i s th m u s ; e s o p h a g e a l

g l a n d s e n c l o s e d in b u l b o u s s w e l l in g o v e r-

l a p p i n g i n t e s t i n e d o r s a l l y . D o r s a l g l a n d

n u c l e u s v e r y d i s ti n c t . D i s t a n c e o f m e d i a n

b u l b v a lv e to ju n c t i o n w i t h i n t e st in e a b o u t

1 .5 t i m e s t h e d i s t a n c e o f h e a d e n d t o

m e d i a n b u l b v a lv e . N e r v e r i n g e n c i rc l e s

C o u n t

R o a d

DIA

t i n c t

m o r p h

o n l y o

T h i s

r e l a t e

(7), A

w h i c h

p l a n t s


10/15

2 3 8 J o u r n a l o / N e m a t o l o g y V o l u m e 9 N o . 3 J u l y 1

t h e b o d y w i d t h a t t h e v u l v a ( 4 5 o f

v u l v a l - a n u s d i s t a n c e ) . A. p lan tag in i s r e -

s e m b l e s A . k l e b a h n i i n t h i s r e s p e c t a n d

d i f f e r s f r o m A. mob i l i s w h i c h h a s a w e l l -

d e v e l o p e d p o s t v u l v a l u t e r i n e s ac o f a l m o s t

t h r e e t im e s t h e b o d y w i d t h a t t h e v u l v a

( a b o u t 7 0 o f v u l v a l - a n u s d i s ta n c e ) , a n d

A . m o x a e a n d A. mi l le [o l i i w h i c h h a v e

s b o r t, r u d i m e n t a r y , c o l la p s e d p o s t v u l v a l

sacs . A. p lantagin is i s d i s t i n g u i s h e d f r o m

A . k l e b a h n i

b y th e m o r e p o s t e r i o r v u l v a

p o s i t i o n ( 8 7 a n d 8 5 i n f ir st a n d s e c o n d

arist

o t h e r

d i c o t

w h i c

f lorin

T

p lan t

g i v e

o f f s p


11/15

4nguina plantaginis

n . s p. D e s c r i p t i o

TABLE 2 . Morphometr ics o f second- and th i rd -mol t fem

Females

Stan

Character ( m) Ran ge Mean Devi

Second m olt (n = 25)

Bo dy leng th 465.3-612.0 53 8. 6 35

G on ad len gth 22.4- 38.9 29.3 4

G on ad en d to tail en d 144.5-263.1 199.8 33

Ta il len gth 40.3- 56.4 49.1 4

a rat io 21.3- 26.5 24.1 1


12/15

24 J o u r n a l o f N em a t o l o g y V o l um e 9 N o . 3 J u l y 1

I r r l ~ ,

, 1 1 I o ' ,

O 1 ~ o

, i L ,

• r , i < ,


13/15

_s ngu i na p l an t ag i n i s

n . s p . D e s c r i p t i o

e l o n g a t e a n d b e g i n t o d i f f e r e n t i a t e i n t o t h e

v a r i o u s p a r t s . I n t h e f e m a l e , t h e p o s t v u l v a l

u t e r i n e s a c b e g i n s t o d i f f e r e n t i a t e a s tl te

r u d i m e n t o f t h e v a g i n a b e c o m e s v i s ib l e .

T h e s p e c i a l i z e d v e n t r a l c h o r d n u c l e i c o n -

t i n u e t o m i g r a t e i n s id e a n d c l e a r ly i n d i c a t e

t h e p o s i t i o n o f t h e f u t u r e v a g i n a . T h e

n u m b e r o f o o g o n i a l n u c l e i i n c r e a s e s to 2 8.

I n t h e m a l e , t h e d e v e l o p i n g g o n a d s g r o w

b o t h a n t e r i o r l y a n d p o s t e r i o r l y , a n d t h e

e l o n g a t i n g v a s d e f e r e n s c o n n e c t s w i t h t h e

e n l a r g e d s p i c u le p r i m o r d i a . T h e r e m a y b e

o f t i l

( F i g .

o v a r y

o o c y t e

a r e c

e r n a c

a n d

s p e r m

r e a d y

m a t u r

s p e r m

v e s i c l


14/15

2 4 2

Journal o f Nem atology Volum e 9 No. 3 July 1

o b s e r v a t i o n m a y a ls o i n d i c a t e t h a t t w o

g e n e r a t i o n s o c c u r w i t h i n o n e g a l l : t h e f e w

l a r g e a d u l t s r e p r e s e n t t h e f ir st g e n e r a t i o n

a n d t h e m a n y s m a l l e r a d u lt s , t h e s ec o n d

g e n e r a t i o n , i n c o n t ra s t , o n l y o n e g e n e ra -

t i o n o f a d u l t s w a s f o u n d i n g a ll s f o r m e d

b y . 4 . tritici a n d m o s t o t h e r An g u i n a

s p e c i e s .

I t a p p e a r s t h a t t h e d i f f e re n c e s i n b o d y

s iz e b e t w e e n t h e f ir st a n d s e c o n d g e n e r a t i o n

a re d e t e r m i n e d b y th e a m o u n t o f fo o d a n d

s p a c e a v a i l a b l e t o e a c h i n d i v i d u a l . A s a

e g g ,

h a tc h

t h r o u

d u r i n

s o m e

b y t h

a c c u

a g u s

l a r v a

e m b r

l a rv a

e a r l i e


15/15

Anguina plantaginis

n . s p. D e s c r i p t i o

1 0. N O R T O N , D . C . 19 65 . A n g u i n a a g r o p y r o n i f l o r is

n . s p . , i n f e c t i n g f l o r e t s o f A g r o p y r o n s m i t h i i .

P r o c . H e h n i n t h o l . S oc . W a s h . 3 2 : 11 8 -1 2 2 .

1 1. S E I N H O R S T , J . W . 1 95 9. A r a p i d m e t h o d f o r

t h e t r a n s f e r o f n e m a t o d e s f r o m f i xa t iv e t o

a n h y d r o u s g l y c e ri n . N e m a t o l o g i c a 4 : 6 7- 6 9.

12 . T H O R N E , G . 1 92 6. T y l e n c h u s b a l s a m o p h i l u s ,

a n e w p l a n t p a r a s i t i c n e m a t o d e . J . P a r a s i t o l.

1 2 : 1 4 1 - 1 4 5 .

13 . T R I A N T A P H Y L L O U , A . C ., a n d H . H I R S C H -

M A N N . 1 96 6. G a m e t o g e n e s i s a n d r e p r o d u c -

1 4 . V A

1 5. W

anguina plataginis

Documents