The Wonders of Instinct: Chapters in the Psychology of InsectsFabre, Jean-Henri
Science
The Wonders of Instinct: Chapters in the Psychology of Insects
Fabre, Jean-Henri
Insects; Instinct
It is done; the twisted ends are put back into position. The
well-trussed game is at last removed from the web and fastened on
behind with a thread. The Spider then marches in front and the load is
trundled across the web and hoisted to the resting-floor, which is both
an inspection-post and a dining-hall. When the Spider is of a species
that shuns the light and possesses a telegraph-line, she mounts to her
daytime hiding-place along this line, with the game bumping against her
heels.
While she is refreshing herself, let us enquire into the effects of the
little bite previously administered to the silk-swathed captive. Does
the Spider kill the patient with a view to avoiding unseasonable jerks,
protests so disagreeable at dinner-time? Several reasons make me doubt
it. In the first place, the attack is so much veiled as to have all the
appearance of a mere kiss. Besides, it is made anywhere, at the first
spot that offers. The expert slayers employ methods of the highest
precision: they give a stab in the neck, or under the throat; they
wound the cervical nerve-centres, the seat of energy. The paralysers,
those accomplished anatomists, poison the motor nerve-centres, of which
they know the number and position. The Epeira possesses none of this
fearsome knowledge. She inserts her fangs at random, as the Bee does
her sting. She does not select one spot rather than another; she bites
indifferently at whatever comes within reach. This being so, her poison
would have to possess unparalleled virulence to produce a corpse-like
inertia no matter which the point attacked. I can scarcely believe in
instantaneous death resulting from the bite, especially in the case of
insects, with their highly-resistant organisms.
Besides, is it really a corpse that the Epeira wants, she who feeds on
blood much more than on flesh? It were to her advantage to suck a live
body, wherein the flow of the liquids, set in movement by the pulsation
of the dorsal vessel, that rudimentary heart of insects, must act more
freely than in a lifeless body, with its stagnant fluids. The game
which the Spider means to suck dry might very well not be dead. This is
easily ascertained.
I place some Locusts of different species on the webs in my menagerie,
one on this, another on that. The Spider comes rushing up, binds the
prey, nibbles at it gently and withdraws, waiting for the bite to take
effect. I then take the insect and carefully strip it of its silken
shroud. The Locust is not dead; far from it; one would even think that
he had suffered no harm. I examine the released prisoner through the
lens in vain; I can see no trace of a wound.
Public-domain text, read in full here on John Shaqi.
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