Imienpo Station Frog
The Imienpo Station frog (Glandirana emeljanovi) is a distinctive amphibian native to Northeast Asia. Known for its unique skin texture and sluggish nature, this species is closely related to the Japanese wrinkled frog (Glandirana rugosa), with which it shares many physical and behavioral traits. While it was once considered a subspecies of its Japanese relative, it is recognized as a distinct species within the Ranidae family.
Key Facts
- Scientific Name: Glandirana emeljanovi
- Conservation Status: Least Concern (IUCN 3.1)
- Distribution: Korean Peninsula and northeast China
- Average Size: 4–6 cm in length
- Habitat: Low-elevation still or slow-moving waters
- Distinctive Feature: Wrinkled skin with irregular dark blotches
Distribution and Habitat
The Imienpo Station frog is primarily found throughout the Korean Peninsula and adjacent regions of northeast China. There is scientific speculation that the species may be, or once was, present in the Russian Primorye region; however, field attempts to locate the frog in that area have so far been unsuccessful.
In terms of elevation, these frogs reside in low-lying areas, typically between 100 and 300 meters above sea level. They prefer environments with still or slow-moving water, making river backwaters and man-made rice paddies ideal habitats for the species.
[ไม่มีภาพประกอบ]Physical Characteristics and Behavior
Adult Imienpo Station frogs are relatively small, typically measuring between 4 and 6 cm in length. Their most striking physical feature is their wrinkled skin, which is marked by irregular dark blotches, providing camouflage in their aquatic environments.
Behaviorally, these frogs are generally sluggish. Notably, they are poisonous, a trait more commonly associated with toads than typical frogs. This chemical defense helps protect them from potential predators in the wild.
Life Cycle and Reproduction
The reproductive cycle of the Imienpo Station frog is timed with the changing seasons. Eggs are typically laid in late spring, specifically from late April through the end of May.
The development of the offspring is a prolonged process. The tadpoles undergo a period of overwintering in their immature state. They do not complete their metamorphosis—the biological process of transforming from an aquatic larva to a terrestrial adult—until the following summer.
| Category | Details |
|---|---|
| Kingdom | Animalia |
| Family | Ranidae |
| Genus | Glandirana |
| Conservation Status | Least Concern |
| Typical Length | 4–6 cm |
| Elevation Range | 100–300 meters |
Frequently Asked Questions
Where is the Imienpo Station frog found?
It is found across the Korean Peninsula and in northeast China, specifically in low-elevation areas between 100 and 300 meters.
How does it differ from the Japanese wrinkled frog?
While it shares many characteristics and was previously regarded as a subspecies of Glandirana rugosa, it is now classified as its own species, Glandirana emeljanovi.
Are Imienpo Station frogs dangerous to touch?
Yes, like toads, these frogs are poisonous, which serves as a natural defense mechanism.
What is unique about their life cycle?
Their tadpoles do not mature immediately; they overwinter in an immature state and only complete metamorphosis the following summer.
What is their preferred habitat?
They favor slow-moving or still waters, such as rice paddies and river backwaters.