294
THE B—IOLOGY OF_._{FlSHES
*
’
'
the sperms intô;the oViduct before the eggS were ripeànd ,
these were then-,fertilised and developed—before extrusion.
.
The female has been in all cases apparently an;zunwilling
‘
party to the transaction and reVenges herself later by eating ,
up theyoung When they escape, if the male ”leaves her any.
z. COMMENSALÏSTS AND PARASÏTES
—
In moving about from place to place the shes meet with
'
many forms of life other than their own kind and enter
'
'
into various relationships with other animals and, even“
-
plants. They do this sometimes in the search of food, or
_
from shes bigger than’themselves, or, it maybe,
to have a quiet corner where they can spend mostof
their time:without troubling about food or enemies. In
.
many cases this leads to permanent relations between
?
“different forms of.life, either friendly or hostile-, the succes—
si_ve generations of shes alWays using the; Same host or being ' —'
sought after by the same ,
relations are
many and varied and have been classied under a large
number Of names,
_
Some examples
'
may be given here,
beginning
the friendly Ïor, it
be quite neutral
_
'
,
_.
,
_
,
,
When a Blennycreeps into a hole between therocks,or
a Goby into an.empty Shell,
house {for itself
Wheîe'Ïit Can settle fdown andrest—arid layïitsÿeggsf1npeace
Fierasfer,.. also a sort-of
amoreselect
kind Of house (Fig 74)‘
'
r'St, into the .eloacal‘ chamber lof 'Îa
from -
this refuge —it=pr0jeCts
body from time to
…
time in search offoOd. _{E—IfÏHolothuri-ans- are not handy it
-
ÏChûoses a Starsh-pr a
MOllusc…
In either
case
it is simply a
a
related
Semper
describes as a parasite, in that .it feeds on=the viscera of the
_
Holothuriam On the other-hand, Fierasfer is” sometimes
not -sdfortunate in its choice -o_f=lOdgings. A
'
occurs in, the Bay of Paama‘has occasionally been
in pearly. oysters, and theSe have a drastic
dealing
THE B—IOLOGY OF_._{FlSHES
*
’
'
the sperms intô;the oViduct before the eggS were ripeànd ,
these were then-,fertilised and developed—before extrusion.
.
The female has been in all cases apparently an;zunwilling
‘
party to the transaction and reVenges herself later by eating ,
up theyoung When they escape, if the male ”leaves her any.
z. COMMENSALÏSTS AND PARASÏTES
—
In moving about from place to place the shes meet with
'
many forms of life other than their own kind and enter
'
'
into various relationships with other animals and, even“
-
plants. They do this sometimes in the search of food, or
_
from shes bigger than’themselves, or, it maybe,
to have a quiet corner where they can spend mostof
their time:without troubling about food or enemies. In
.
many cases this leads to permanent relations between
?
“different forms of.life, either friendly or hostile-, the succes—
si_ve generations of shes alWays using the; Same host or being ' —'
sought after by the same ,
relations are
many and varied and have been classied under a large
number Of names,
_
Some examples
'
may be given here,
beginning
the friendly Ïor, it
be quite neutral
_
'
,
_.
,
_
,
,
When a Blennycreeps into a hole between therocks,or
a Goby into an.empty Shell,
house {for itself
Wheîe'Ïit Can settle fdown andrest—arid layïitsÿeggsf1npeace
Fierasfer,.. also a sort-of
amoreselect
kind Of house (Fig 74)‘
'
r'St, into the .eloacal‘ chamber lof 'Îa
from -
this refuge —it=pr0jeCts
body from time to
…
time in search offoOd. _{E—IfÏHolothuri-ans- are not handy it
-
ÏChûoses a Starsh-pr a
MOllusc…
In either
case
it is simply a
a
related
Semper
describes as a parasite, in that .it feeds on=the viscera of the
_
Holothuriam On the other-hand, Fierasfer is” sometimes
not -sdfortunate in its choice -o_f=lOdgings. A
'
occurs in, the Bay of Paama‘has occasionally been
in pearly. oysters, and theSe have a drastic
dealing