17-β-HSDH

(1)

COMPARATIVE STUDY OF THE RELATIONSHIP BETWEEN THE

QUANTITIES

^{OF ACTIVE}

3-β-HSDH

AND

17-β-HSDH

CELLS IN THE OVARIES OF MUSCOVY AND PEKING DUCKS

A. DERAY L. GOMOT Laboratoire de

Zoologie,

Équipe

de Recherche associée au C. N. R.

S.,

^no

229,

25030

Besançon

^Cedex

In

Muscovy

^and

Peking

domestic female

ducks,

^{the cells}

showing

^a

ð.5-3-!-hydroxysteroid dehydrogenase activity

^were^localized^atthe theca interna level of the

follicles,

whereas the cells with an active

r7-fi-hydroxysteroid dehydrogenase

enzyme ^were

spread

^{under the}

germinative epithelium.

^The

relationship

established between these two cellular

quite

^different

and characteristic for each

species

of female ducks.

HISTOLOGICAL AND CYTOLOGICAL STUDY OF THE TESTIS AND GENITAL TRACTS

OF

MUSCOVY DUCKS

(CAIRINA

^MOSCHATA

L.)

DURING SEXUAL ACTIVITY

C. R. MARCHAND L. GOMOT Laboratoire de

Zoologie,

Équipe

de Recherche associée au C. N. R. S. n°

229

25030

Besançon

^Cedex

i. The cellular associations of the seminal

epithelium

^were^studied^onsemi-fine sections coloured with toluidine blue. The observations are in

quite good agreement

with what Y. CLER-

M O N

T

( 195 8)

found in the

Peking

^duck

(Anas platyrhynchos L.).

In the interstitial spaces, the

Leydig cells,

^with

large

nucleolli and with

cytoplasm

filled with

lipids,

^formed

large

^islets.

2

. The

genital

^tracts^were^observed^on5 [1.

paraffin

^sections.

Four

types

^{of ducts}^can^be^seen^{in the}

epididymis : a)

rete testis

ducts ;

b)

^efferent

ducts ;

c) connecting

^{ducts ;}

d) epididymis

^ducts.

17-&beta;-HSDH

QUANTITIES

3-&beta;-HSDH

17-&beta;-HSDH

Zoologie,

Équipe

S.,

229,

Besançon

Muscovy

Peking

ducks,

showing

&eth;.5-3-!-hydroxysteroid dehydrogenase activity

follicles,

r7-fi-hydroxysteroid dehydrogenase

spread

germinative epithelium.

relationship

categories

quite

species

OF

(CAIRINA

L.)

Zoologie,

Équipe

229

Besançon

epithelium

quite good agreement

( 195 8)

Peking

(Anas platyrhynchos L.).

Leydig cells,

large

cytoplasm

lipids,

large

genital

paraffin

types

epididymis : a)

ducts ;

b)

ducts ;

c) connecting

d) epididymis

17-β-HSDH

3-β-HSDH

17-β-HSDH

ð.5-3-!-hydroxysteroid dehydrogenase activity