The Viviparous Species of the Lizzard Family

The crested gecko has a special way of reproducing; this includes a mating call, breeding seasons, and an egg birth rather than a live birth.

The alligator is one of the largest living reptiles today. In North America, they inhabit freshwater swamps or wetlands in the south, from Texas to North Carolina. Distinguishing features include the fourth mandibular tooth, the long, broad snout, and the thick, scaly skin. Like some other reptiles, alligators have temperature-dependent sex determination, which is a non-genetic way of determining the sex ratio of offspring produced. Unlike other reptiles, alligators exhibit parental care; they nest-guard, and even offer evidence of maternal care for juveniles after hatching. Through the reviewing of multiple experiments conducted on Alligator mississippiensis, evidence is provided for the temperature-dependent mode of sexing and maternal

There are many interesting things people can learn about reptile behavior from their pet like how their reptile eats, how it moves, how it hunts, how it reproduces, how it mates, how it defends itself, and how it’s born. One fact that can be learned is that not all reptiles are born from eggs some, like boas, are born live.There are many benefits to keeping a reptile. For example, people who are allergic to pet dander from furry animals like cats and dogs can keep a reptile as a pet. Reptiles aren't furry, so there aren’t any allergy problems to consider. Reptiles also don’t really require the intense care that is needed for many other pets as their cold-blooded metabolism makes them less active. Many reptiles also don’t need to be fed daily as a good meal will often keep them for days or even months in the case of many snakes. Reptiles are also good for people who like quiet pets as many are relatively silent.(PetLife) When choosing a pet reptile people also need to be aware of the advantages and disadvantages of keeping a reptile to be sure it is suitable for them. For example, the experts at Reptile Expert.com recommend that “Corn snakes make a good snake pet for beginners. They are docile and respond well to human handling.” (Hsin-Yi) The owners have to be aware that some pet reptiles have killed people and take into consideration the fact they will be solely responsible for anything that

Viviparity (live birth) is a highly uncommon form of reproduction in the insect world, those that do have this type of reproduction fall into two main groups: those who have a high offspring rates and those who have low offspring rates. Viviparity, while uncommon, does serve a distinct purpose. In some cases the insect has very few ovarioles to begin with, in which case, it is essential for the offspring to be given the best chances at survival they can get. Having the embryo safely protected inside the insect while it develops gives the young insect a far better survival rate than those who are deposited in eggs outside the mother. In other cases, such as with Aphids, it allows for a ‘telescoping generations’ effect which greatly increases the numbers of

Two anoles on different islands can have similar traits as long as their ecological niches are similar, however geographic isolation was the cause to have 3 different species evolving. They might have evolved by having swam, floated on natural rafts, or the islands may have been connected at one point. Therefore, lizards on the same island are more closely related to each other than lizards that have similar body shapes and live in the same type of habitat. Lizards from the same island are more closely related to one another than to similar looking lizards from other islands. For example, a grass-bush anole from Puerto Rico is more related a trunk-ground anole also from Puerto Rico, than it is to a grass-bush anole from Hispaniola. This shows that the same type of anole lizards evolve independently on each of the islands. However, there was a point in time whereas the anole species from the four Caribbean islands all evolved from one common ancestor. The cladogram produced shows that species from separate islands and ecomorphs, for example the A. cybotes from Hispaniola and the A. occultus from Puerto Rico, are more closely related to each other than they are to L. carinatus, which belongs to a different genus of lizards. The DNA evidence gathered from anoles from the four islands is able to determine the ancestry of a single species that inhabited the Caribbean allowed for diversity of new species in the

It is remarkable how years of evolution have given some reptiles and invertebrates a quick way to escape their potential demise. Have you ever wondered how a small lizard with minimal defense can get away from a predator so easily? When attacked by a predator the lizard’s tail will fall off giving the reptile a chance to escape. Timothy Higham, an Assistant Professor of Biology stated in one of his experiments, “Once shed from the lizard’s body the tail completes complex jumps and lunges.” This mean that after the lizard loses its tail the tail will start to jump and

E. coqui reproduce in their native range year round, but during wet season is when breeding activity is concentrated. A female E. coqui lay 4-6 clutches of about 28 eggs each and about 16-41 clutches per year. The life cycle for the E. coqui start in a larval form that leads in a froglet within the egg. The next stage make this frog unique as it bypasses the tadpole stage in development, this is called free-living. The E. coqui internal fertilizes and, like other eleutherodactylids, the fertilized eggs never pass through a free-living larval (tadpole) stage. This particular stage is key to the success in the E. coqui survival in different habitats. It allows for the eggs to be

Andrea Smith was taking notes for her biology exam. Her professor has told her that the exam would cover, in part,

al. 2004, (Agosta et. al. 2004) critique the article by stating that there was not sufficient information that was provided for the evidence to claim that the horned lizards were adapting. The points Agosta et. al. 2004 thought that Young et. al. addressed was “evidence that selection has occurred on the trait in question” (Young et. al. 2004). An example of this would be when Young et. al. talked about how the horned lizards with the shorter length were least favored by selection therefore lizards with longer horns would have greater fitness (Young et. al. 2004). On the other hand, according to Agosta et. al. claim that Young et. al. failed to present three major points. The three major points are the “existence of a functional explanation for putative fitness differences associated with the trait”, “evidence for heritability of phenotype differences corresponding to trait variation”, and “knowledge of phylogeny such that putative adaptations can be shown to have originated in selective regimes in which they are currently advantageous” (Agosta et. al. 2004). Agosta et. al. thought the young et. al. lacked the information to support whether the horned lizards had adapted to the shrikes (Agosta et. al.

In today’s time, it is not uncommon to see strange looking animals whether it be in a normal front yard or the plains of Africa. Sometimes it is interesting to study these very different animalists and this is by far one of the weirdest ones. The thorny devil lizard is one of the world's strangest lizards that is not like the common green lizard. The Thorny Lizard is a unique animal that belongs in the kingdom Animalia. It is apart of the phylum Chordata and the class reptilia, which contains snakes, turtles, and other lizards. It is also a part of the order Squamata and the family Agamidae and finally, its genus is Moloch. These lizards are not going to be found in a grassy backyard or on a fence but rather somewhere much more secluded and very hot.

Although genomic sequencing has advanced ten-fold throughout the 21st Century, there has been little focus on non-avian reptiles3 until A. carolinensis became the first non-avian reptile to have its entire genome sequenced and published in 2011.5,6 Native to North America,5 A. carolinensis are an incredibly abundant species of amniotic vertebrates4 and have been

The Italian Wall lizard is the one of the greatest examples of evolution by Natural Selection occurring during the past 200 years. The evolution of the Italian Wall lizard is an example of divergent evolution. In 1971, 10 pairs of Adult lizards were moved by scientist from original island of Pod Kopiste to the islands of Pod Mrčaru which were nearby (Lord 2011). The lizards were there for decades. After few years, the Italian Wall lizards were compared with their same

These lizards defend themselves with the color of their tail.The tail is bright blue and that's normally what you would recognize first.The predator comes up and bites the tail of the lizard and the tail comes off.The Plestiodon lizard can grow to be 12.5 to 21.5 centimetres

When defining Synapsid, this term is often misused to only refer to the only extinct non-mammalian forms, when in actuality this group includes all the amniotes that descended from a common ancestor who had a synapsid type of temporal fenestration (Pough, Janis and Heiser, 448). A term when defining the Synapsid lineage is “mammal-like reptile” this term

As the result, the DNA was taken from the blood samples of the Galapagos Hawk out of three fledgling possibilities to be related to the biological parent is one. Shows other chicks belong to a group in which two adults males couldn’t find the difference genetically. DNA fingerprinting analysis of paternity in Galapagos Hawks revealed extensive mix paternity both brood and across brood produced by the same group during the years. Results that involving one male who father a single young and another that not even his own, by being part of a two-mile group. Galapagos Hawks proves cooperative polyandry, larger samples over multiple years needed to determine whether paternity sharing is true relates to male reproduction success exist. No evidence proof shows dominance interaction in groups of the most common size, such as variation in male reproduction successful