与 «INTROMITTENT»相关的英语书籍
在以下的参考文献中发现
intromittent的用法。与
intromittent相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
1
New Zealand Journal of Zoology
Hypodermic insemination does not occur; insemination is achieved via the
female gonopore. A modified fin or a fleshy papilla serves as an intromittent
organ in the Elasmobranchii, but amongst the Teleostei this method is essentially
restricted ...
2
The Evolution of Primary Sexual Characters in Animals
As men- tioned above, it is the pattern of loss of the true phallus, and particularly
of the intromittent organ, that is particularly interesting in birds because all
species are internal fertilizers. This pattern, how- ever, does not lend itself well to
...
Janet Leonard, Alex Cordoba-Aguilar, 2010
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.
Adam Cornelius Bert, 2012
... transfer may be enhanced by lower heme-heme cooperativity and a greater
Bohr effect in the adult Hb. 4. INTROMITTENT ORGAN AND OTHER
SPECIALIZED STRUCTURES IN MALES In viviparous fish, sperm are transferred
to the female ...
B.G. Kapoor, Bhavna Khanna, 2004
Vas- cularized tissue in the intromittent organ becomes engorged with blood
making the organ turgid (Fig. 3-36). Amplexus is inguinal, and the male arches
his back so that the region posterior to the sacrum is perpendicular to the body of
the ...
William E. Duellman, 1994
6
The Insects: Structure and Function
These phallic lobes divide to form an inner pair of mesomeres and outer
parameres, collectively known as the phallomeres (Fig. 12.7b). The mesomeres
unite to form the aedeagus, the intromittent organ. The inner wall of the aedeagus
, which ...
R. F. Chapman, Stephen J. Simpson, Angela E. Douglas, 2013
7
Sex Differences: Developmental and Evolutionary Strategies
Sperm transfer is typically successful despite the lack of an intromittent organ.
Why then, if a male protuberance is not necessary for successful sperm transfer,
do males of most species have one? One possible answer is: the better to rape
with ...
8
Advances in Parasitology
extended. We have therefore previously favoured use of the term ''penis'' for the
intromittent organ of gyrodactylids and have considered that an evolutionary
trend from tubular to spherical has taken place. The ball-like penis of
Gyrodactylus ...
9
Fishes of the Gulf of Mexico, Vol. 1: Myxiniformes to ...
Tip of ventral branch of middle elongate fin ray of male intromittent organ (first
branched or fourth anal ray) ends with decurved hook; adult males about 15 mm
SL; broad black band from snout to caudal fin base . . . . . Heterandria formosa p.
John McEachran, Janice D. Fechhelm, 2013
Associated with the intromittent organs is a pair of lateral segmented claspers,
arising either separately from basal lobes or from a common basal plate borne by
the ninth sternum. These claspers, which are individually movable by basal ...
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How Did Tyrannosaurus Rex Have Sex?
“Crocodilians all have what's politely called an 'intromittent organ,' ” says Switek. “And if you look at birds, the most basal or primitive ... «Slate Magazine, 六月 15»
Unkindest cut? Insect penis gets the chop in the name of science
But in the seed bug, the intromittent organ is a long, thin tube with no ... (2015) Experimental reduction of intromittent organ length reduces male ... «The Guardian, 五月 15»
This Freaky New Frog Gives Birth To Live Tadpoles, Not Eggs
Strangely, the scientists aren't entirely sure how the males fertilize the eggs inside the females as "they have no obvious intromittent organ present to facilitate ... «io9, 一月 15»
New Frog Species Reproduces Like No Other
... science has politely called an “intromittent organ” – but what happens next is a sure sign that the fanged frogs don't spawn like other species. «National Geographic, 一月 15»
“Giant Earthworm” Unearthed in Costa Rica
The vent, is simple, transverse and lobed, and the male intromittent organ has 8-10 elongate lobes and appears fluted when everted. There are ... «The Costa Rica Star, 十一月 14»
Copulate to populate: ancient Scottish fish did it sideways
An evolutionary summary of how male intromittent sexual organs evolved, from extinct placoderm fishes through to humans. We know that ... «The Conversation AU, 十月 14»
Sex, the Early Years
... placoderm called Rhamphodopsis that seemed to preserve claspers – the tubular, paired “intromittent organs” seen in male sharks and rays. «National Geographic, 九月 14»
10 Dinosaur Mysteries That Still Linger
... and urination in today's crocodiles and birds—and males had an "intromittent organ" found in ostriches and ducks. But we can't know without ... «Newser, 八月 14»
The Ten Biggest Dinosaur Mysteries We Have Yet to Solve
It's also likely that male dinosaurs had an “intromittent organ” similar to that of ducks and ostriches. But since no one has found an impression or ... «Smithsonian, 八月 14»
The First Genital In An Animal Evolved From An Extra Pair Of Legs
He identified the strange structures near the pelvic fins as claspers, implying they were intromittent or insertable organs. Nonetheless, just ... «io9, 六月 14»
