Calliophis Classification and Conservation Status Explained

Calliophis classification is a bit complex, but it's actually pretty straightforward. Calliophis is a genus of snakes in the family Colubridae.

There are several species within the Calliophis genus, including the Calliophis bivirgatus and the Calliophis nigheboren. These snakes are found in various parts of Asia, including India and Southeast Asia.

Unfortunately, many Calliophis species are threatened or endangered due to habitat loss and fragmentation.

You might enjoy: Calliophis Bivirgatus

Calliophis is a genus of venomous elapid snakes found in Southeast Asia. There are several species within this genus, including the Beddome's coral snake, the Bibron's coral snake, and the Spotted coral snake.

The Spotted coral snake, also known as Calliophis gracilis, is a species of venomous elapid snake endemic to Southeast Asia. It's found in countries such as Thailand, Malaysia, and Indonesia.

Some of the species within the Calliophis genus are found in specific countries, like the Two-stripped coral snake in the Philippines and the Blue Malaysian coral snake in Indonesia, Cambodia, Malaysia, Singapore, and Thailand.

Here's a list of some of the species within the Calliophis genus:

The Small-spotted coral snake, also known as Calliophis maculiceps, is a species of venomous elapid snake endemic to Southeast Asia. Five subspecies are recognized, including the nominotypical subspecies.

A unique perspective: Snake Island Brazil Snakes

Calliophis species are found in various parts of Southeast Asia.

C. maculiceps, one of the species, is found in Myanmar, Thailand, Laos, Cambodia, and Vietnam.

Calliophis is a genus of snakes that includes 17 species, all of which are found in Southeast Asia and India. These species are known for their vibrant colors and patterns.

One of the most striking species in this genus is the Blue Malaysian coral snake (Calliophis bivirgatus), which is found in Indonesia, Cambodia, Malaysia, Singapore, and Thailand. This snake has a distinctive blue color and is highly venomous.

The genus Calliophis also includes the Spotted coral snake (Calliophis gracilis), which is found in Thailand, Malaysia, Indonesia, and Singapore. This snake has a spotted pattern and is highly adaptable to different environments.

Some of the other notable species in this genus include the Banded Malaysian coral snake (Calliophis intestinalis) and the Speckled coral snake (Calliophis maculiceps). These snakes are found in Indonesia, Malaysia, and other parts of Southeast Asia.

Here are some of the species in the Calliophis genus:

Calliophis is listed as a species of concern, but fortunately, it's not considered endangered. In fact, its conservation status is Least Concern, according to the IUCN.

This species can be found in a wide range of habitats, including forests and grasslands. It's a adaptable creature, able to thrive in various environments.

Some of the places where Calliophis has been spotted include Khao Chong, Khao Luang National Park, and Khao Sam Roi Yot National Park. These locations are just a few examples of the many areas where this species can be found.

Here's a list of some of the specific locations where Calliophis has been recorded:

To study the venom of Calliophis, researchers used high-throughput next-generation sequencing to analyze the venom gland cDNA libraries of C. bivirgata flaviceps.

This method allowed them to profile the venom gland's genetic makeup, which is crucial for understanding the complex composition of the venom.

The researchers then assembled the transcriptome, or the complete set of transcripts in the venom gland, through a process called de novo assembly.

Gene annotation followed, where the researchers identified and labeled the specific genes present in the transcriptome.

Multiple sequence alignment was also performed to compare the sequences of different genes and identify any similarities or differences.

To analyze the venom gland of C. bivirgata flaviceps, researchers used high-throughput next-generation sequencing to profile the venom gland cDNA libraries.

This approach allowed them to create a comprehensive transcriptome of the venom gland, which was then de novo assembled.

The transcriptome was annotated to identify and label the various genes and their functions.

The sequences were then aligned using Mega X, a software tool, to compare and contrast the different genes.

Selection pressure analysis was performed using pairwise distances with amino acid substitution and the Maximum Composite Likelihood model.

This analysis provided insights into the substitution rates of non-synonymous and synonymous mutations, represented by the dN/dS ratio.

Toxin gene expression in C. bivirgata venom gland is a complex process that involves the transcription of specific genes to produce venom components.

High-throughput next-generation sequencing was used to profile the venom gland cDNA libraries of C. bivirgata flaviceps, resulting in the identification of 74 total transcripts.

The majority of these transcripts belonged to the three-finger toxin (3FTx) family, which are non-enzymatic polypeptides with molecular weights of approximately 6-9 kDa.

These toxins are typically the major components of elapid venoms and are characterized by their three beta-stranded loops that resemble three protruding fingers.

Comparison of the venom gland transcriptomic profiles between the current study and a recent report reveals a similar dominating pattern of 3FTx, with some variation in the relative proportions of many toxin subtypes.

The variation in toxin subtypes can be attributed to inter-individual differences between specimens, such as wild versus captive snakes from different geographical regions, or extensive post-translational modifications.

The table below shows the relative abundance of transcripts in each toxin gene family:

The most abundantly and diversely expressed transcripts in the 3FTx family belonged to the short-chain 3FTx (S-3FTx) category, with 18 transcripts accounting for 94.16% of the total toxin FPKM.

Within the S-3FTx family, the majority of transcripts were annotated by sequence similarities to a delta-neurotoxin, called calliotoxin (UniProtKB: P0DL82), which is a cardiotoxin-like protein.

The results of the study on Calliophis are quite fascinating. 35,766 transcripts were yielded after filtering the data at an FPKM of ≥ 1.

These transcripts were then categorized into three groups: toxin, non-toxin, and unidentified. The toxin category dominated the transcriptome with a total FPKM of 44.46%.

Transcripts in the toxin category encoded known and putative snake toxins. These toxins accounted for virtually half of the venom gland transcriptome.

Calliophis venom is a complex mixture of proteins, and understanding its composition is key to appreciating the biology of these fascinating snakes.

The major toxin in Calliophis venom is a type of protein called Three-finger toxin (3FTx), which is found in many elapid snakes, including cobras, kraits, sea snakes, and coral snakes.

The 3FTx proteins are non-enzymatic polypeptides with molecular weights of approximately 6-9 kDa, and they are oriented in three beta-stranded loops that resemble three protruding fingers.

In the venom gland transcriptome of Calliophis flaviceps, the 3FTx transcripts were further categorized into short-chain 3FTx (S-3FTx), long-chain 3FTx (L-3FTx), and non-conventional 3FTx (NC-3FTx).

The majority of S-3FTx transcripts (40.14% of toxin FPKM, two transcripts) were annotated by sequence similarities to a delta-neurotoxin, called calliotoxin.

Other S-3FTx composed of 12 putative neurotoxins or neurotoxin-like proteins and four cardiotoxin-like/cytotoxin-like proteins.

Here is a breakdown of the toxin gene families found in the venom gland transcriptome of Calliophis flaviceps:

These proteins are incredibly diverse, with some having the ability to block nerve signals, while others may cause tissue damage or disrupt the structure of cells.