Arts & Crafts
Learn more
Reading & Writing
Learn more
Math & Logic
Learn more
Sports & Active
Learn more
Music & Dance
Learn more
Social & Community
Learn more
Mindful & Reflective
Learn more
Outdoor & Nature
Learn more
FOR AGES 3 YEARS TO 18 YEARS
At Kidadl we pride ourselves on offering families original ideas to make the most of time spent together at home or out and about, wherever you are in the world. We strive to recommend the very best things that are suggested by our community and are things we would do ourselves - our aim is to be the trusted friend to parents.
We try our very best, but cannot guarantee perfection. We will always aim to give you accurate information at the date of publication - however, information does change, so it’s important you do your own research, double-check and make the decision that is right for your family.
Kidadl provides inspiration to entertain and educate your children. We recognise that not all activities and ideas are appropriate and suitable for all children and families or in all circumstances. Our recommended activities are based on age but these are a guide. We recommend that these ideas are used as inspiration, that ideas are undertaken with appropriate adult supervision, and that each adult uses their own discretion and knowledge of their children to consider the safety and suitability.
Kidadl cannot accept liability for the execution of these ideas, and parental supervision is advised at all times, as safety is paramount. Anyone using the information provided by Kidadl does so at their own risk and we can not accept liability if things go wrong.
Ryukyu spiny rat (Tokudaia osmensis) is a rodent species of the Muridae family and order Rodentia. These rats are endemic to Amami Oshima island of the Amami islands of the archipelago of Japan. This family is the largest rodent family and also of mammals. There are more than 700 species spread across Africa, Australia, and Eurasia, which include rats, mice, and gerbil species. Muridae is a derivative of the Latin word 'mus', which translates to 'mouse.' There is only a little evidence of Ryukyu spiny rat found, so, the evolution of murids is not well known. There's a possibility that this species evolved from hamster-like species sometime around the early Miocene in tropical Asia. The Ryukyu spiny rat is of the subfamily Murinae, which contains old-world mice and rats. There are four other subfamilies of this family. The species of this family have a great sense of smell and hearing. The fossil record of the Murinae subfamily shows that they first appeared around 14 million years ago in the Antemus genus. The Murinae subfamily contains 129 genera and 584 species as of 2005. The Ryuku spiny rat is threatened and at the risk of extinction in the wild.
If you like these facts about Ryukyu spiny rats, then do read these mongoose facts and black rat facts for more.
Ryukyu spiny rat (Tokudaia osimensis) is a species of spiny rat of the order Rodentia, family Muridae, and genus Tokudaia. The Ryukyu spiny rat's SRY gene and the Ryukyu spiny rat's Y chromosomes are lost. This species of rat has XO/XO sex chromosomes. These genes are usually expressed in Ryukyu spiny rat gonads and the brains of both sexes. It is considered that T. tokunoshimensi and T. osimensis diverged from the Tokudaia muenninki species.
Ryukyu spiny rat (Tokudaia osimensis) is of the class Mammal and genus Tokudai.
The data on the population of Ryukyu spiny rat is not available. However, the population is considered to be in the billions.
The species of genus Tokudaia are spread across the non-contiguous island. Tokudaia osimensis is an endemic species to the Amami Oshima island in the Amami islands, which is a part of Ryukyu archipelago of Japan.
The natural habitat of Tokudaia osimensis is a subtropical moist broadleaf forest. There is only a little information on the ecology and habitat range of this species. However, the species of the order Rodentia are found in the natural terrestrial habitat range even in human-made surroundings. Also, they inhabit less than 3 km area. Rodents are found around urban area and agricultural area.
There is little information known on Ryukyu spiny rat natural habitat. So, usually, Rodentia species live underground in groups and develop a burrow system.
Tokudaia osimensis lifespan data is not available. However, the average lifespan of a spiny rat is 2-4 years.
Ryukyu spiny rat is nocturnal so they nest, sleep, and store food in rock crevices, burrows of other animals, and hollows in logs or trees. Even though they lack sex chromosomes, males are able to produce sperm. This suggests that males have newly acquired genes. All Ryukyu spiny rat female gain sexual maturity at an early age. There is no information on the sex chromosome, sexual maturity or sexual dimorphism found that impacts reproduction. Of the spiny rat species, a large number of males breed every season.
The conservation status of Ryukyu spiny rat is Endangered and are at risk of extinction in the wild. This species face threats by predators, habitat destruction and fragmentation by human beings.
*Please note that this is an image of a rodent, not a Ryukyu spiny rat specifically. If you have an image of a Ryukyu spiny rat please let us know at [email protected].
There is very little information on the description of this species. However, spiny rats of the family Muridae have a rat-like pointed nose with a brown to gray body. Their front foot has four toes and the hindfoot has five toes. They have noticeable bristly and spiny fur mostly on their rumps and backs. They have creamy or white underbellies.
These small rodents are not considered cute.
Like all other rats in the family Muridae, these spiny rats communicate using their senses like touch, smell, and hearing. They communicate with each other using pheromones.
The exact size of these rats is unavailable. Ryukyu spiny rats are smaller rodents of the other two in this genus. Spiny rats can be 4-19 in (10-48 cm) long.
The data on the speed of Ryukyu spiny rat is unavailable.
The average weight of Ryukyu spiny rat is around 0.18 lb (85 g).
Female Ryukyu spiny rats are called does and males are called bucks.
There is no specific name given to a baby Ryukyu spiny rat. They are often referred to as pinkie, pup, kitten, or nestling.
These rats mostly feed on seeds, small insects, and worms. The depend highly on plants and fruits.
This species is not dangerous to human beings.
No, they would not make a good pet. They do well in moist regions in forests.
All three species of genus Tokudaia are threatened or endangered and are at risk of extinction.
Okinawa spiny rat (Tokudaia muenninki) have thick and short body with dense fur. They are found in the northern area of Okinawa island.
These rats of genus Tokudaia face predators like feral cats and dogs and introduced mongooses. They face competition from the introduced black rats.
Of the three species in genus Tokudaia of the order Rodentia, T. tokunoshima and T. osimensis, two species have lost sex chromosomes, whereas Tokudaia muenninki have abnormally large sex chromosome.
The sex chromosomes of T. tokunoshima and T. osimensis is XO/XO and T. muenninki has XX/XY sex chromosome
Many species of Rodentia order have been used for food, clothes, as lab animals, and as pets.
The species of Rodentia cause huge damage to crops and also carries disease.
A group of Ryukyu spiny rat is called plack, plague, swarm, or colony.
The Arboreal spiny rats break off their tail when they are attacked by predators. The tails grow back.
Even though the Arboreal spiny rats resemble rats, they are close relatives of guinea pigs and chinchillas.
American spiny rat is medium-sized rodents of Central and South America. They are slender with long whiskers and have short limbs.
Rodents have strong lower and upper pairs of teeth that grow continuously.
Rats are highly intelligent and are empathetic creatures. They also make lifelong relationship with their owners.
Many rats develop medical problems so they are short-lived.
The Ryukyu long-tailed giant rat is the only extant rodent species in the Diplothrix genus. They are threatened by habitat loss.
The Ryukyu spiny rats are found in Ryukyu Islands. They are named spiny rats due to their bristly, spiny looking fur on their back and rump.
The conservation status of Ryukyu spiny rats is Endangered. The other species of spiny rats are threatened, endangered, or extinct. These rats are facing the risk of extinction in the wild. Spiny rats can be found in many restricted and protected areas.
Here at Kidadl, we have carefully created lots of interesting family-friendly animal facts for everyone to discover! Learn more about some other mammals including nutria, or water rat facts.
You can even occupy yourself at home by drawing one on our Ryukyu Spiny Rat coloring pages.
* Please note that this is an image of a rat, not a Ryukyu spiny rat specifically. If you have an image of a Ryukyu spiny rat please let us know at [email protected].
<p>With a background in Aeronautical Engineering and practical experience in various technical areas, Arpitha is a valuable member of the Kidadl content writing team. She did her Bachelor's degree in Engineering, specializing in Aeronautical Engineering, at Nitte Meenakshi Institute of Technology in 2020. Arpitha has honed her skills through her work with leading companies in Bangalore, where she contributed to several noteworthy projects, including the development of high-performance aircraft using morphing technology and the analysis of crack propagation using Abaqus XFEM.</p>
Read The Disclaimer
At Kidadl we pride ourselves on offering families original ideas to make the most of time spent together at home or out and about, wherever you are in the world. We strive to recommend the very best things that are suggested by our community and are things we would do ourselves - our aim is to be the trusted friend to parents.
We try our very best, but cannot guarantee perfection. We will always aim to give you accurate information at the date of publication - however, information does change, so it’s important you do your own research, double-check and make the decision that is right for your family.
Kidadl provides inspiration to entertain and educate your children. We recognise that not all activities and ideas are appropriate and suitable for all children and families or in all circumstances. Our recommended activities are based on age but these are a guide. We recommend that these ideas are used as inspiration, that ideas are undertaken with appropriate adult supervision, and that each adult uses their own discretion and knowledge of their children to consider the safety and suitability.
Kidadl cannot accept liability for the execution of these ideas, and parental supervision is advised at all times, as safety is paramount. Anyone using the information provided by Kidadl does so at their own risk and we can not accept liability if things go wrong.
Kidadl is independent and to make our service free to you the reader we are supported by advertising.
We hope you love our recommendations for products and services! What we suggest is selected independently by the Kidadl team. If you purchase using the buy now button we may earn a small commission. This does not influence our choices. Please note: prices are correct and items are available at the time the article was published.
Kidadl has a number of affiliate partners that we work with including Amazon. Please note that Kidadl is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.
We also link to other websites, but are not responsible for their content.
Was this article helpful?
We’ll send you tons of inspiration to help you find a hidden gem in your local area or plan a big day out.
Check your inbox for your latest news from us. You have subscribed to:
Remember that you can always manage your preferences or unsubscribe through the link at the foot of each newsletter.
