Anne M. Zajac - Veterinary Clinical Parasitology

Parelaphostrongylus , a parasite of white‐tailed deer, produces fi...Fig. 1.149 Protostrongylus larvae have a plain tail without the kink and acc...Fig. 1.150 Higher magnification view of the simple tail of a Protostrongylus Fig. 1.151 Dictyocaulus viviparus first‐stage larva. Intestinal cells contai...Fig. 1.152 Although Dictyocaulus larvae are most often seen in fecal samples...Fig. 1.153 Eggs of Moniezia are often square or triangular, unlike the more ...Fig. 1.154 Owners may be alarmed by the presence of Moniezia segments in the...Fig. 1.155 Packet of Thysanosoma eggs from a sheep. The eggs lack the pyrifo...Fig. 1.156 Fasciola hepatica egg. These large eggs have an operculum ( arrow )...Fig. 1.157 Fasciola hepatica (F) and Paramphistomum (P) eggs. The two eggs a...Fig. 1.158 Egg of Fascioloides magna , the liver fluke of white‐tailed deer. ...Fig. 1.159 Dicrocoelium dendriticum eggs contain a fully formed miracidium, ...Fig. 1.160 The eggs of Eurytrema are similar in appearance to those of Dicro ...Fig. 1.161 Ruminant schistosomes typically produce a spindle‐shaped egg. Thi...Fig. 1.162 Parasites found in fecal samples of horses. Figure courtesy of Dr...Fig. 1.163 The large size and deep‐brown color of the oocysts of E. leuckart ...Fig. 1.164 Fecal flotation test containing iodine‐stained Giardia cysts.Fig. 1.165 Cryptosporidium oocysts in a sugar flotation preparation.Fig. 1.166 Equine strongylid (strongyle) eggs in fresh fecal samples are typ...Fig. 1.167 Several equine strongylid eggs are present in this fecal sample. ...Fig. 1.168 Equine small strongyle larvae ( arrows ) in manure. These small (le...Fig. 1.169 Parascaris eggs are typical, thick‐shelled ascarid eggs containin...Fig. 1.170 Parascaris eggs may lose the rough, proteinaceous coat on the egg...Fig. 1.171 Larvated strongylid egg and Parascaris egg that has undergone the...Fig. 1.172 Egg of Strongyloides westeri , the horse threadworm. These eggs ar...Fig. 1.173 Oxyuris eggs are asymmetrical with a single polar plug. Eggs embr...Fig. 1.174 Adult pinworms are occasionally seen in the feces of horses. Adul...Fig. 1.175 Larvated egg of Habronema sp. The larva is surrounded by a thin s...Fig. 1.176 The only parasitic nematode larvae that would be expected in the ...Fig. 1.177 Larvae of Dictyocaulus arnfieldi , the equid lungworm, have a smal...Fig. 1.178 The egg of the equine tapeworm Anoplocephala is similar in appear...Fig. 1.179 Anoplocephala egg (A) and several equine strongylid eggs.Fig. 1.180 Parasites found in fecal samples of pigs.Fig. 1.181 Unsporulated (A) and sporulated (B) oocyst of Cystoisospora suis ....Fig. 1.182 Oocysts of E. porci (P) and E. scabra (S), two of the eight Eimer ...Fig. 1.183 Numerous Eimeria oocyts in a porcine fecal sample. Although commo...Fig. 1.184 Balantidium coli trophozoite in a direct saline smear. The cilia ...Fig. 1.185 The kidney‐bean‐shaped macronucleus, characteristic of ciliates, ...Fig. 1.186 Hyperosmotic flotation solutions can cause distortion of Balantid ...Fig. 1.187 Like other ascarid eggs, those of Ascaris suum contain a single c...Fig. 1.188 Hyostrongylus and Oesophagostomum are the most common and importa...Fig. 1.189 Like other members of the genus, eggs of Trichuris suis , the swin...Fig. 1.190 Larvated Strongyloides eggs are usually present only in the feces...Fig. 1.191 The small Strongyloides ransomi egg (Sr) pictured here could be c...Fig. 1.192 In fresh fecal samples, Metastrongylus eggs contain a larva and h...Fig. 1.193 Egg of Physocephalus .Fig. 1.194 Ascarops egg. Spirurid eggs are unlikely to be seen if standard f...Fig. 1.195 Fasciola eggs. Trematode infections are rarely encountered in swi...Fig. 1.196 Macracanthorhynchus hirudinaceus egg. The embryo (acanthor) is su...Fig. 1.197 Eimeria spp. oocysts from a chicken. Eimeria species are common p...Fig. 1.198 After reaching the environment, Eimeria oocysts sporulate; the le...Fig. 1.199 Isospora spp. can also be found in birds, as seen in this fecal s...Fig. 1.200 Caryospora oocyst. The sporulated oocyst of this genus contains a...Fig. 1.201 Sarcocystis is another coccidia genus that may be found in the fe...Fig. 1.202 Cryptosporidium spp. oocysts in birds are similar in appearance t...Fig. 1.203 Trichomonas spp. in birds have an undulating membrane and several...Fig. 1.204 Chilomastix is a genus of intestinal flagellate found in birds, p...Fig. 1.205 Eggs of Capillaria spp. are very common in the feces of domestic ...Fig. 1.206 Egg of Eucoleus dispar from a sharp‐shinned hawk.Fig. 1.207 Capillaria sp. egg in an owl ( arrow ). The larger, browner egg bel...Fig. 1.208 A smooth, thick shell is seen in both Ascaridia spp. and Heteraki ...Fig. 1.209 Another ascarid genus found in ducks and wild birds is Porrocecum Fig. 1.210 Subulura brumpti eggs in the feces of a chicken. Unlike most asca...Fig. 1.211 Strongylid egg and coccidia oocysts in an avian fecal sample.Fig. 1.212 Syngamus sp. egg from a crow. This is a common parasite of wild b...Fig. 1.213 Like Syngamus , eggs of Capillaria and Eucoleus spp. have bipolar ...Fig. 1.214 Spirurid egg in the feces of a double‐crested cormorant. Larvae a...Fig. 1.215 Spirurid egg in the feces of a red‐tailed hawk. The larva within ...Fig. 1.216 Tetrameres egg in the feces of a homing pigeon. Like other spirur...Fig. 1.217 Fluke eggs in avian feces. The operculum is not readily visible i...Fig. 1.218 The developing miracidium can be seen inside this avian trematode...Fig. 1.219 Raillietina sp. eggs from a chicken. The embryonic hooks are clea...Fig. 1.220 Tapeworm eggs from a magpie. Scattered among the cestode eggs are...Fig. 1.221 Egg of a thorny‐headed worm ( Centrorhynchus ) from the feces of a ...Fig. 1.222 Acanthocephalan ( Plagiorhynchus sp.) eggs in the feces of an east...Fig. 1.223 Eimeria oocysts have smooth, clear cyst walls and contain a singl...Fig. 1.224 Rodent and rabbit hosts may be infected with multiple species of ...Fig. 1.225 Once in the environment, oocysts undergo sporulation to the infec...Fig. 1.226 Syphacia egg in feces from a gerbil. Eggs of Syphacia have a smoo...Fig. 1.227 Aspiculuris eggs have narrowed poles and a smooth, clear, double ...Fig. 1.228 Passalurus ambiguus eggs have an operculum‐like structure at one ...Fig. 1.229 Specimens of Paraspidodera uncinata , the cecal worm of guinea pig...Fig. 1.230 Strongylid eggs in the feces of rabbits and rodents are similar t...Fig. 1.231 Hymenolepis nana infects rodents and primates. Eggs are elliptica...Fig. 1.232 Other species of Hymenolepis found in rodents have larger, rounde...Fig. 1.233 Cittotaenia eggs are quite similar in appearance to Hymenolepis e...Fig. 1.234 Trophozoite (A) and cyst (B) of the commensal ciliate Nyctotherus Fig. 1.235 Entamoeba invadens trophozoite in a stained fecal smear from a Bu...Fig. 1.236 Cyst of Entamoeba invadens in an iodine‐stained smear of reptile ...Fig. 1.237 Sporulated Caryospora oocyst in the feces of a loggerhead turtle....Fig. 1.238 Coccidia in the feces of a bearded dragon. Isospora (I) oocysts i...Fig. 1.239 Oxyurid (pinworm) eggs are frequently encountered in reptile fece...Fig. 1.240 Pinworm egg from a turtle.Fig. 1.241 Reptiles may be infected with the same groups of helminth parasit...Fig. 1.242 This Capillaria serpentia egg from a turtle has a distinctive rou...Fig. 1.243 Eggs of the ascarids Hexametra and Spinicauda in the feces of a c...Fig. 1.244 Kalicephalus sp. egg from a python. This is one of the genera of ...Fig. 1.245 Rhabditid nematodes like Rhabdias and Strongyloides occur in rept...Fig. 1.246 Rhabdias is a common lungworm of frogs. First‐stage larvae are pa...Fig. 1.247 Tapeworm egg from a water moccasin. This egg is surrounded by a g...Fig. 1.248 Tapeworm egg from an anole. This egg is also surrounded by a clea...Fig. 1.249 Fluke (trematode) infections are common in wild reptiles, especia...Fig. 1.250 Flukes are also common in amphibians. These eggs of the lung fluk...Fig. 1.251 Spirorchid egg detected on sedimentation of feces from a wood tur...Fig. 1.252 Another spirorchid fluke is Hapalotrema . This egg from a green se...Fig. 1.253 Acanthocephalans (thorny‐headed worms) are also common in wild re...Fig. 1.254 Pentastomid egg in feces from a Boelon’s python. This is an unusu...Читать дальше