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What has the author Charles Klaver written?
Charles Klaver has written: 'Phylogeny and classification of the Chamaeleonidae (Sauria) with special reference to hemipenis morphology' -- subject(s): Chamaeleo, Chameleons, Phylogeny, Classification, Generative organs, Hemipenis
Where Is A Rattle Snakes Penis?
The snake's hemipenis is 'inverted' - inside the cloaca (the last ventral scale on the snake's belly). During copulation, blood pressure everts the hemipenis outside the males body as it's inserted into the female's vent.
How do rattlesnakes fertilize?
If the female rattlesnake is receptive, the male will wrap his tail around her cloaca and insert a hemipenis which will impregnate her with sperm.
How does a rattlesnake mate?
If the female rattlesnake is receptive, the male will wrap his tail around her cloaca and insert a hemipenis which will impregnate her with sperm.
Do snakes have penises?
Male snakes do not have penises like mammals do. Instead, they have two hemipenes, which are located in their tail. Hemipenes are used for reproduction by being inserted into the female snake's cloaca during mating.
Is leopard gecko prolapse like parasites?
No, a leopard gecko prolapse is similar to a hernia in humans. It is when part of the intestines, uterus, or hemipenis pertrudes through the anal area. It can be caused by parasites, constipation or difficulty laying eggs
What are some characteristics of the order Squamata?
Squamata is an order of reptiles that includes lizards and snakes. They are characterized by their overlapping scales, movable quadrate bones in the skull, and presence of a hemipenis in males for reproduction. Squamates are ectothermic and exhibit a wide range of sizes, habitats, and feeding strategies.
How do water dragon lizards mate?
Male lizards have two reproductive organs, called hemipenes. Only one at a time is used during mating. The male simply mounts the female, often grabbing her by the neck or side, and inserts one into her cloaca, then they remained locked together for a while. It is a much less active affair than what is seen in mammals or birds. Some species lay leathery or hard-shelled eggs, while others give live birth.
What is the difference between a boy or girl lizard beaded dragon?
Male bearded dragons tend to have larger heads, darker coloring, and more pronounced femoral pores on their thighs compared to females. Additionally, males have a hemipenal bulge at the base of their tail, which is absent in females. These physical characteristics can help identify the sex of a bearded dragon.
Do the male spiders lay eggs?
Every male creature has a penis. Snakes, Whales, ants. You name it. Arachnid (spider) reproduction happens by a male spider going behind a female spider and jumping aboard, holding the females legs down while doing his work. After the intercourse the female spider kills the male spider. The female falls pregnant, lays her eggs and then spiders are born
Describe excretory system of reptiles?
Digestive and urogenital systemsThe digestive system of modern reptiles is similar in general plan to that of all higher vertebrates. It includes the mouth and its salivary glands, the esophagus, the stomach, and the intestine and ends in a cloaca. Of the few specializations of the reptilian digestive system, the evolution of one pair of salivary glands into poison glands in the venomous snakes is the most remarkable.During development the embryos of higher vertebrates (reptiles, birds, and mammals) consecutively develop three separate sets of kidneys; these are arranged in longitudinal sequence in the body cavity. The first set, the pronephroi, are vestigial organs left over from the evolutionary past that soon degenerate and disappear without having had any function. The second set, the mesonephroi, are the functional kidneys of adult amphibians, but their only contribution to the lives of reptiles is in providing the duct (the Wolffian duct) that forms a connection between the testes and the cloaca. The operational kidneys of reptiles, birds, and mammals are the last set, the metanephroi, which have separate ducts to the cloaca. The principal functions of the kidney are the removal of nitrogenous wastes resulting from the oxidation of proteins and the regulation of water loss. Vertebrates eliminate three kinds of nitrogenous wastes: ammonia, urea, and uric acid. Ammonia and urea are highly soluble in water, but uric acid is not. Ammonia is highly poisonous, urea is slightly poisonous, and uric acid is not poisonous at all.Among reptiles the form taken by the nitrogenous wastes is closely related to the habits and habitat of the animal. Aquatic reptiles tend to excrete a large proportion of these wastes as ammonia in aqueous solution. This method uses large amounts of water and is no problem for a freshwater resident, such as an alligator, which eliminates between 40 and 75 percent of its nitrogenous wastes as ammonia. Terrestrial reptiles, such as most snakes and lizards, must conserve body water, and they convert their nitrogenous wastes to insoluble, harmless uric acid, which forms a more or less solid mass in the cloaca. In snakes and lizards, these wastes are eliminated from the cloaca together with wastes from the digestive system.Prior to the evolution of the metanephric kidney, the products of the male gonad, the testis, traveled through the same duct with the nitrogenous wastes from the kidney. But with the appearance of the metanephros, the two systems became separated. The female reproductive system never shared a common tube with the kidney. Oviducts in all female vertebrates arise as separate tubes with openings usually near, but not connected to, the ovaries. The oviducts, like the Wolffian ducts of the testes, open to the cloaca. Both ovaries and testes lie in the body cavity near the kidneys.With the evolution of the reptilian egg, internal fertilization became necessary. The males of all modern reptiles, with the exception of tuataras, have functional copulatory organs. The structures vary from group to group, but all include erectile tissue as an important element of the operating mechanism, and all are protruded through the male's cloaca into that of the female during copulation. Unlike the penis of turtles and crocodiles, the copulatory organ of lizards and snakes is paired, with each unit being called a hemipenis. The hemipenes of lizards and snakes are elongated tubular structures lying in the tail. The penis of a crocodile or turtle is protruded through the cloacal opening wholly by means of a filling of blood space (sinuses) in the penis; protrusion of a lizard's or snake's hemipenis, however, is begun by a pair of propulsor muscles. Completion of the erection is brought about by blood filling the sinuses in the erectile tissue. Only one hemipenis is inserted into a female, but which one is a matter of chance. Unlike the penis of mammals, the copulatory organs of reptiles do not transport sperm through a tube. The ducts from the testes, as already mentioned, empty into the cloaca, and the sperm flow along a groove on the surface of the penis or hemipenis.
How do garden lizards give birth?
Male and female reptiles do not have external genitalia to help owners determine the sex of a herp. Males and females do possess different reproductive organs, however. The male possesses two testicles, housed inside the body. The male also has a copulatory organ, either a single penis (turtles and tortoises, crocodilians) or a pair of hemipenes (lizards, snakes) that can often be seen as two bulges behind the cloaca at the base of the tail. The penis or hemipenis is not connected to the urinary tract, and is strictly an organ of reproduction. Lizards and snakes can be sexed by the use of a probe that is inserted into the cloaca, directed towards the tail, off of the midline. The probe will travel farther in the male than in the female. Answered by: cassey, brittney and kimberly (cass.brit.kim) source:exoticpetvet
