Sarcocystis species identification combines microscopy and DNA testing successfully
Sarcocystis Species Identification Reveals Parasites in Tawny Owls Lithuania
New research published in the journal Animals shows that adding Artemisia ordosica to the diet of cashmere goats increased healthy omega-3 fatty acids in their muscles. The supplement also improved the way the animals processed fats. These results suggest a simple and natural way to produce meat with more heart-friendly nutrients. Not only could this approach benefit livestock farmers, but it could also help people who want healthier food choices. Furthermore, accurate Sarcocystis species identification plays a key role in ensuring the health and safety of goat products. Moreover, as interest in functional foods continues to grow, the study shows that better animal nutrition can help improve both food quality. In addition, it helps improve human health. In the context of food safety, Sarcocystis species identification is increasingly important to detect and track parasites found in animal products. Additionally, developments in Sarcocystis species identification could benefit both researchers and the food industry by providing more reliable results. Ultimately, focusing on Sarcocystis species identification contributes to overall improvements in food systems and animal health.
Key Takeaways
- First study to screen the intestines of wild Tawny Owls (Strix aluco) in Lithuania for Sarcocystis parasites. This research also highlights the importance of accurate species identification for Sarcocystis to ensure reliable parasite tracking in diverse wildlife hosts.
- Combined light microscopy (to detect oocysts/sporocysts) with molecular tools (PCR and sequencing of ITS1 and 28S rRNA markers) for species-level identification.
- Eight Sarcocystis species were identified in the owls’ intestines — a mix of species that use birds as intermediate hosts and species that use small mammals as intermediate hosts.
- All eight species are new host records for the Tawny Owl.
- S. glareoli was the most frequently detected species. This species forms cysts in the brains of voles and other small rodents.
- Most infected owls carried only a single Sarcocystis species, and overall infection intensity was low.
Study Area: Wildlife and Ecosystems of Lithuania
This study took place in Lithuania. Lithuania is a small country in Northern Europe. It has forests, farms, lakes, and wetlands. These places are home to many kinds of birds and small mammals. Tawny Owls live in these forests and hunt at night. They eat mice, voles, and shrews. They also eat small birds at times. Understanding wildlife relationships and Sarcocystis species identification is key for tracking parasite transmission in this region.
Firstly, Lithuania’s mix of woods and fields gives owls lots of prey to catch. This makes it a good place to study how parasites move between hunters and prey. Secondly, The rich wildlife here helps parasites, like Sarcocystis, complete their life cycle. Small mammals get infected first. Then owls eat them and carry the parasite next. Thirdly, This makes Lithuania a strong site for tracking wildlife health and disease spread.
Genetic Markers for Sarcocystis Species Identification
Scientists used gene tests to identify and name the Sarcocystis parasites. To do this, they examined two important gene markers. These are small parts of DNA that help tell one species from another. The process of Sarcocystis species identification relied on both genetic evidence and careful comparison to known markers from reference databases.
First, they used the ITS1 marker. This short DNA region helps group closely related parasite species. Next, they analyzed the 28S rRNA marker. This longer DNA region provides a clearer picture of how different species are related. Then, the researchers collected DNA from the sporocysts found in owl intestines. After that, they copied the DNA using a method called PCR. They then read the DNA sequence through DNA sequencing. Afterward, the team compared these DNA sequences with known Sarcocystis sequences stored in genetic databases. As a result, they confirmed which species were present.
Finally, by using both gene markers together, the researchers obtained strong and reliable evidence. Therefore, they were able to identify eight different Sarcocystis species with confidence.
Conclusion
This is the first study to find Sarcocystis parasites in wild Tawny Owls using gene tests. Scientists found eight types. Four came from birds. Four came from small mammals. All eight are new for this owl. Notably, advances in species identification for Sarcocystis are crucial in wildlife research.
One type stood out most. It was called S. glareoli. This parasite forms cysts in the brains of voles and other small mammals. This finding shows that owls can carry more kinds of this parasite than people once thought.
The types found match what Tawny Owls eat in Lithuania. These owls eat mostly small mammals. They also eat some birds. Most owls carried just one type of parasite. Infection levels were low overall. This shows that Tawny Owls likely spread only a small group of Sarcocystis species. For ongoing research and surveillance, systematic Sarcocystis species identification enables a clearer view of parasite dynamics among local wildlife.
These results show why gene data and diet facts work well together. Combining them helps us learn how parasites spread. It also shows how picky these parasites are about their hosts in birds of prey.
Frequently Asked Questions
What is Sarcocystis?
Sarcocystis is a group of tiny parasites. Thus, they need two different animals to complete their life cycle. One animal carries the adult parasite, while the other carries the cyst stage.
How did the scientists identify the parasites?
The team first examined the parasites under a microscope. They then used DNA tests on two gene markers, ITS1 and 28S rRNA. This gave a more accurate way to identify each species.
How many Sarcocystis species did the researchers find?
The researchers identified eight different Sarcocystis species. Moreover, by using both microscope studies and DNA analysis gave strong proof of their findings.
Reference
Mikulėnas, E., Prakas, P., Butkauskas, D., Balčiauskas, L., Juozaitienė, V., & Kutkienė, L. (2025). Molecular and microscopic identification of Sarcocystis spp. in the intestines of the tawny owl (Strix aluco) in Lithuania. Parasitology Research. Advance online publication. https://doi.org/10.1007/s00436-025-08442-8
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I completed my Master of Science from the University of Allahabad in 2017 with a strong academic background in life sciences and chemistry. My specialization included Molecular Biology, Microbiology, Genetics, Plant Breeding, Phycology, Paleobotany, and Bioinformatics, along with Organic Chemistry, Inorganic Chemistry, and Physical Chemistry. This multidisciplinary training provided me with a comprehensive understanding of biological systems and analytical scientific approaches.
After completing my postgraduate studies, I gained valuable professional experience in both the education and social development sectors. I worked at A.M. Oxford Public School, where I was actively involved in guiding students toward academic excellence. In this role, I focused on creating an engaging learning environment, encouraging critical thinking, and nurturing students’ curiosity for scientific learning. My experience as an educator strengthened my communication, mentoring, and classroom management skills.
In addition to my teaching experience, I worked with Jeevan Jagriti Foundation, where I contributed to community-based initiatives aimed at improving educational access and awareness among underprivileged sections of society. Through this work, I participated in programs designed to support social development and promote the value of education in marginalized communities.
These professional experiences helped me develop strong interpersonal, leadership, and organizational skills while reinforcing my commitment to education and community service.
