与 «HECTOCOTYLUS»相关的英语书籍
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been developed in its own proper vesicle within the larger bladder, and of which
the remains continue attached at the. extremity of the hectocotylus after it has
allowed the filament to escape). The filament is tubular, its cavity is continuous
with ...
2
Scientific Memoirs: Selected from the Transactions of ...
The thick end of the Hectocotylus is fixed to the pedicle, while the thin coiled-up
part is free. 4. By the bursting of the sac and the eversion of its edges, the
pigmented capsule on the back of the Hectocotylus arises. 5. The testis lies in the
...
Arthur Henfrey, Thomas Henry Huxley, 1853
3
The annals and magazine of natural history, zoology, botany ...
marked, that along each lateral margin this Hectocotylus bears fine cutaneous
papillae in a longitudinal furrow ; these papillae, which are placed close together,
and stand here and there in several close series, gave the fringed margin to the ...
4
Advances in Cephalopod Science: Biology, Ecology, ...
(e.g. some Cranchiidae; Nesis, 1995). This strategy is generally inferred from the
presence of a hectocotylus in preserved specimens, but oceanic species from the
family Ommastrephidae have also been observed to transfer sper- matophores ...
Spermatophores are extruded by the penis (P) from Needham's sac (NS) and
passed along the hectocotylized third arm during mating, (b) Female internal
anatomy. The hectocotylus is presumably inserted during mating into the distal
oviduct ...
Roger T. Hanlon, John B. Messenger, 1998
6
Cephalopods of the World: Chambered nautiluses and sepioids ...
Hectocotylus present, left dorsal arm modified: proximal end with fleshy pad
formed from enlarged and/or fused sucker pedicels; copulatory apparatus a
dome-shaped lobe medially and short, pointed, horn with smaller papilla
between these; ...
P. Jereb, Clyde F. E. Roper, 2005
7
Sensuous Seas: Tales of a Marine Biologist
Excitedly, he pronounced it one of the few parasites that infect only females, and
created a new genus for it: Hectocotylus. Many years later someone discovered
that Hectocotylus was merely the spermatophore-bearing tip of the fourth right ...
8
Nature's Nether Regions: What the Sex Lives of Bugs, Birds, ...
A male argonauthas avery large hectocotylus, towhich it attacheshis
spermatophore. That, as we haveseen, is nothing outofthe ordinary in the
cephalopod world. But the male argonaut mates only once in hisentire life. He
has no choice, ...
While the modified arm of the male thus early received attention, the true
hectocotylus that separates entirely from the male and attaches itself in the
mantle chamber of the female escaped notice for many centuries. To quote from
the ...
10
Reproduction of Marine Invertebrates V4: Molluscs : ...
6.3.1 The Hectocotylus and Sexual Dimorphism The sexes are separate in all
cephalopods and, unlike some other molluscs, the animals never change sex in
the course of their lifetime. In most species males and females are rather alike in
...
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Rainbow effect Fine Arts
Although she might never know the thrill of having sperm introduced into her mantle cavity by a mate's hectocotylus arm, she could inspire ... «Bay Area Reporter, 六月 15»
Cephlopods control body and arms with different parts of their brain
In fact, the penis is a ball of sperm in a tentacle called a hectocotylus and females can be fertilised by more than one, by storing them in the ... «Daily Mail, 四月 15»
Nature's strangest sex rituals include an octopus with a detachable …
In fact, the penis is a ball of sperm in a tentacle called a hectocotylus and females can be fertilised by more than one, by storing them in the ... «Daily Mail, 四月 15»
How male octopuses avoid being eaten by hungry females
The male's main tool for this daunting endeavour is a specialized mating arm, known as the hectocotylus. When he is not engaged with a ... «BBC News, 二月 15»
Animal Sex Is Dangerous and Horrifying. So Why Does Sex Exist at …
When the two meet, he uses his own modified arm called a hectocotylus to transfer sperm into her oviduct. And as he's leaving, the arm snaps ... «Wired, 二月 15»
Sex in the Wild: 6 Ways Animals Do It
The male inserts a detachable penis, called a hectocotylus, into the mantle cavity of the female, where he deposits sperm packets called ... «Live Science, 二月 15»
Animal instincts
During sex with the female, the male will pass the hectocotylus into the female's cavity. In order to do this, the arm must first be severed, and the ... «Arizona Daily Wildcat, 二月 15»
Animal Sex: How Octopuses Do It
Unlike females, "males have a modified third right arm called a hectocotylus, which has a sperm groove down it and a specialized tip," Mather ... «Live Science, 二月 15»
7 Times When Tumblr Users Proved How Deep Their Disney Love Is
When octopuses reproduce, the male uses a specialized arm called a hectocotylus to transfer spermatophores (packets of sperm) from the ... «moviepilot.com, 一月 15»
Absurd Creature of the Week: The Beautiful Octopus Whose Sex Is …
Specifically, it's a specially adapted arm called a hectocotylus, “and there a little grooves on the arm that the sperm travels down and goes into ... «Wired, 一月 15»
