Images of protozoa

Animal Parasitology ANIMAL AND HUMAN PARASITE IMAGES Index of supplemental visual material Copyright© 1999-2015 (Kristin Michel) The continually expanding number of images linked to this page, currently comprising 529 images, represent originals. Any images listing Steve Upton as the contributor are free for educational and non-commercial use without permissions, provided that an appropriate acknowledgement is furnished citing Steve J. Upton, Kansas State University. Any images kindly provided by other individuals, however, are free for use only if you obtain the appropriate permissions directly from that contributor. Use of the images for marketing parasite treatments not endorsed by the FDA, AMA, or AVMA is not permissible! Last updated: 13 January 2015 Monogenes Cleidodiscus pricei (opisthaptor) Digenes Acanthatrium eptisici (adult distome) Allassostoma magnum (adult amphistome) Allassostoma magnum (adult amphistome, second photo) Allassostoma magnum (line drawing) Clinostomum sp. (yellow grub disease in largemouth bass) Clonorchis sinensis (adult distome) Clonorchis sinensis (eggs) Clonorchis sinensis (line drawing) Echinostoma trivolvis (adult echinostomes) Fasciola hepatica (adult distome) Fasciola hepatica (more adults) Fasciola hepatica (egg) Fasciola hepatica (more eggs) Fasciolopsis buski (adult distomes) Fasciolopsis buski (line drawing) Loxogenes sp. (adult distome) Metagonimus yokagawai (adult distome) Paragonimus kellicotti (adult distome) Paragonimus kellico...

\( \newcommand\) • • • • Learning Objectives After completing this section you should be able to perform the following objectives. • Briefly describe protozoa. • Briefly describe 3 ways protozoans may reproduce asexually. • Define the following: • trophozoite • protozoan cyst. Protozoa are unicellular eukaryotic microorganisms lacking a cell wall and belonging to the Kingdom Protista. Although there are nearly 20,000 species of protozoa, relatively few cause disease; most inhabit soil and water. Protozoa reproduce asexually by the following means: • fission: One cell splits into two. • schizogony: A form of asexual reproduction characteristic of certain protozoa, including sporozoa, in which daughter cells are produced by multiple fission of the nucleus of the parasite followed by segmentation of the cytoplasm to form separate masses around each smaller nucleus. • budding: Buds form around a nucleus and pinch off of the parent cell. Some protozoa also reproduce sexually by fusion of gametes (Figure \(\PageIndex\) : Life Cycle of Plasmodium, the Protozoan that causes Malaria. (1) A female Anopheles mosquito carrying malaria-causing parasites feeds on a human and injects the parasites in the form of sporozoites into the bloodstream. The sporozoites travel to the liver and invade liver cells. (2) Over 5-16 days*, the sporozoites grow, divide, and produce tens of thousands of haploid forms, called merozoites, per liver cell. Some malaria parasite species also produce hypnozoit...

Identification of in ruminants is significant for species identification, ecological population structure survey, and protozoa behaviour analysis. At present, identification still needs to be done manually, which is time-consuming and inefficient. To address this issue, this paper proposes a network to enhance the expression of features, and the ReLU Introduction Ruminants are special populations, and common herbivores such as cattle and sheep have an important organ that can digest fibrous plant resources — rumen (Chen et al., 2019; Lin et al., 2019; Wang et al., 2019a, Wang et al., 2019b). The microbial system in the rumen is very complex, and it is mainly composed of protozoa (ciliates), bacteria, anaerobic fungi, and an archaea. These microorganisms ferment feed into the rumen so that organisms can provide nutrients to maintain the physiological activities of the host (Williams & Coleman, 1992). Studies have shown that rumen protozoa can swallow rumen bacteria, reduce the rate of starch digestion by rumen bacteria, and protect animals from acidosis. Meanwhile, some rumen protozoa can swallow fiber substances and digest cellulose by producing related carbohydrate enzymes (Feng et al., 2020; Li et al., 2018; Orpin, 1984; Wang et al., 2019a; Wereszka & Michałowski, 2012). Among rumen protozoa, ciliates are the largest, most abundant, and most important. It is a single-cell eukaryotic microorganism. Ciliates make up the majority of protozoa in the rumen (size from 10 × 20 ...