Extensive Uncharted Biodiversity: The Parasite Dimension

Area of Science:

• Parasitology
• Zoology
• Ecology

Background:

• Parasites are difficult to detect and sample due to their cryptic nature and patchy distributions.
• Current knowledge of parasite diversity, distribution, and extinction is limited, with significant research biases towards helminths and arthropods infecting vertebrates.
• Understanding parasite biodiversity is crucial for ecological dynamics and host evolution.

Purpose of the Study:

• To evaluate the general understanding of parasite diversity.
• To highlight research biases in parasite studies.
• To use Myxozoa as a model to demonstrate uncharted parasite diversity and discuss knowledge gaps.

Main Methods:

• Review of existing literature on parasite diversity and distribution.
• Focus on Myxozoa as a speciose clade of endoparasitic cnidarians.
• Discussion of methods and challenges in measuring parasite diversity and estimating extinction.

Main Results:

• Parasite research is heavily biased, neglecting many parasite groups.
• Myxozoa represent a significant, yet poorly recognized, component of cnidarian diversity (estimated 20% of species).
• There are substantial gaps in understanding myxozoan diversification, geographical distributions, and diversity measurement.

Conclusions:

• Myxozoa offer a prime example of extensive, understudied parasite diversity.
• Urgent need for improved methods to assess parasite diversity and distribution.
• Concerns exist regarding parasite extinction risks and their ecological implications.