292
THE “BIOLOGY OF FISHES
"
‘ '
'
blows on the snOut, both during
combats and
over obstacles ”'(Srmtt)
,
’
‘L.
,
'
This author— gives an interesting story
ÎÎ,_'_Ï
how impartial, even indierent, the females are; to the
,'
'
'
nature of their partner.
A female had preparedthè bed as
'
usual and then conducted a male toit; thisîmale was '
f
caugh‘t and removed. She searched for and obtained =‘a
:
Second mate; this was also removed, and so on until she
had conducted in all nine males to her spawning bed;
“
and when even the last male was caught, she returned
'
,
with a lar'gé-Trout in her train.”
,
.
,
_'
'
The courtship of shes,
as it throws light on '
,
"their, mental
will be deàlt with in the following
î"{fêhàptèt, but—the physical side of the matter may be discussed . =
,
here., QIt
'the'ferriale to show, any
_
'
actrv1ty in the choice of a fnate;ias in the case of the Salmon; ' _L
pOssible, and lets the
'
the Work-;rIn the case of the Cyprinodoiïts‘it
" ' 4
hasb'eehremàrkèd that the —femaleshoWsf a decided aversion
to having anything :to- do with any male”; no -matter how
_
'
brilliantly cOlÿured he may- be; This is not
is
simplytheir“natre to bepassiveand-anabolic,whilst the
"
,
male ' is—iu3ing up h13 stores ”of— energy—in
The
resulting phenomena Stan. Jbe under—stoodîfrom this basis;
,
,
—
,
Among the marine Téleos'ts there is; nocourtsh1p,so
'
,_
far
can“ deternne. - ;T_he
“
'
:
grôlindë',ï fshëd their ïëggs fat mtervalsandthendepartas
Î
*
offemalesmdlscrlmnatelyBut it
'
-
-
-_closegattendance
'
_
? on1efemaleandevmhdpsmtheexïruswn of the eggS
îl,'
'
01ÿ example of Î=Ï
E' ademtesexuallnœrœufsemŒgTeleosts Withipelagic
'
0VlSprov1dedbytheDragonet?S ..dêscribîedîbÿ Holt
a(1898)ThePlpeshesseemso
,
7'Ï:;Î
âaseasonatanyraœadthemaleand femaleplaÿWxtn one
;
an0îherf0rqu1teàf£èlôñgi
thef—Çggs “are :làîd' " '
5
”and—it.;isï'th‘î‘
'
Précédent

- 332/445

Suivant