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FIGURE 2 in Trichodinids (Ciliophora: Peritrichida) parasitic on gills of freshwater fishes, Carassius auratus and Aristichthys nobilis from China, with the description of Trichodina subtilihamata sp. nov.
FIGURE 2. Photomicrographs of silver impregnated adhesive discs of Trichodina spp. A–B. Trichodina kazubski Van As & Basson, 1989; C–D: Trichodina mutabilis Kazubski & Migala, 1968. Scale bar = 20m.
FIGURE 1 in Trichodinids (Ciliophora: Peritrichida) parasitic on gills of freshwater fishes, Carassius auratus and Aristichthys nobilis from China, with the description of Trichodina subtilihamata sp. nov.
FIGURE 1. Photomicrographs of silver impregnated specimens of Trichodina spp. A–B. Trichodina subtilihamata sp. nov; C: Trichodina uniforma Van As & Basson, 1989; D: Trichodina nigra Lom, 1960. Scale bar = 20m.
Data: Diversity of fish parasites of the Penzhina River (Kamchatka Krai, Russia)
<p>The study of the fauna of fish parasites helps to understand the ways of formation of ichthyofauna and obtain a more complete knowledge of the biodiversity of the aquatic ecosystem as a whole. Parasitologically, the Penzhina River, one of the largest and most inaccessible rivers in the Russian Far East, remained poorly studied for a long time. Penzhina is characterized by an unusually extended mouth area, its estuary is distinguished by extremely high tides, up to 13.0 m, which is the highest tide in Russia. Rich ichthyofauna (21 species of fish and cyclostomes) and a variety of hydrological conditions favor the formation of a diverse fauna of fish parasites in the Penzhina River. The published parasitological data was still fragmentary and concerned few host species, so it is significantly broadened by the authors' findings and observations. The paper provides information on 122 species of fish parasites in the lower reaches and estuary of the Penzhina River, and Penzhinskaya Bay.</p>
Figure 3 in Parasites of the Lessepsian invasive fish Lagocephalus sceleratus (Gmelin 1789) in the eastern Mediterranean Sea
Figure 3. Mouth parts of Gnathia sp. praniza larva. (a) Tip of mandible showing teeth. (b) Paragnaths (i), maxillule with teeth (ii) and maxillipede (iii).
Figure 6 in Parasites of the Lessepsian invasive fish Lagocephalus sceleratus (Gmelin 1789) in the eastern Mediterranean Sea
Figure 6. Hysterothylacium aduncum found in Lagocephalus sceleratus. (a) Anterior part showing large lips (i), and cuticle striation (ii). (b) Posterior end of female showing small caudal spines ('cactus-tail', arrow). (c) Posterior end of male showing two spicules (arrow).
Figure 2 in Parasites of the Lessepsian invasive fish Lagocephalus sceleratus (Gmelin 1789) in the eastern Mediterranean Sea
Figure 2. Gnathia sp. praniza larva found in the gills of Lagocephalus sceleratus under stereomicroscope. (a) Fresh specimen. (b) Preserved specimen.
Figure 1 in Parasites of the Lessepsian invasive fish Lagocephalus sceleratus (Gmelin 1789) in the eastern Mediterranean Sea
Figure 1. Locations of Lagocephalus sceleratus sampling. Lesvos Island (top right), northeastern Aegean Sea; Rhodes Island (bottom right), southeastern Aegean Sea.
Figure 5 in Parasites of the Lessepsian invasive fish Lagocephalus sceleratus (Gmelin 1789) in the eastern Mediterranean Sea
Figure 5. Anisakis sp. found in Lagocephalus sceleratus. (a) Mouth part with the lips (arrowhead) and boring tooth (arrow). (b) Tail part showing anus opening (arrowhead) and a thin anomalous mucron (arrow).
Figure 4 in Parasites of the Lessepsian invasive fish Lagocephalus sceleratus (Gmelin 1789) in the eastern Mediterranean Sea
Figure 4. Mouth parts of Gnathia sp. praniza larva. (a) Maxillipede showing endite (i), hairs (ii), teeth (iii) and setae (iv). (b) Gnathopod (i) and maxillipede (ii).
Figure 3 in Redescription of Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960) (Copepoda: Chondracanthidae) parasitic on marine fishes from the Seto Inland Sea, Japan and the East China Sea off Japan and Korea
Figure 3. Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960), adult male. (A) Habitus, dorsal; (B) same, lateral; (C) genito-abdomen, ventral; (D) left antennule (arrowhead indicates aesthetasc), dorsal; (E) left antenna, posterior; (F) right mandible, ventral; (G) right maxillule, posterior; (H) right maxilla, posterior; (I) right maxilliped, lateral. Scale bars: A, B = 100 µm; C = 50 µm; D, I = 20 µm; E, H = 10 µm; F, G = 5 µm.
Figure 1 in Redescription of Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960) (Copepoda: Chondracanthidae) parasitic on marine fishes from the Seto Inland Sea, Japan and the East China Sea off Japan and Korea
Figure 1. Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960), adult female. (A) Habitus, dorsal; (B) same, ventral; (C) genito-abdomen, ventral; (D) left antennule, including enlarged view of distal end, ventral. Scale bars: A, B = 300 µm; C = 50 µm; D = 100 µm.
Figure 2 in Redescription of Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960) (Copepoda: Chondracanthidae) parasitic on marine fishes from the Seto Inland Sea, Japan and the East China Sea off Japan and Korea
Figure 2. Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960), adult female. (A) Left antenna, with enlarged view of distal end of atrophied tip and surface ornamentation on coxobasis and endopod, anterior; (B) labrum, ventral; (C) left mandible, dorsal; (D) right maxillule, dorsal; (E) right maxilla, posterior; (F) left maxilliped, posterior; (G) right leg 1, ventral; (H) left leg 2, ventral. Scale bars: A, B, E, F = 20 µm; C, D, H = 10 µm; G = 50 µm.
Figure 4 in Redescription of Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960) (Copepoda: Chondracanthidae) parasitic on marine fishes from the Seto Inland Sea, Japan and the East China Sea off Japan and Korea
Figure 4. Pseudacanthocanthopsis secunda (Yamaguti and Yamasu, 1960), adult male. (A) Right leg 1, anterior; (B) left leg 2, anterior. Scale bars: A, B = 20 µm.
FIGURE 1 in Helminth parasites of some freshwater fishes from Baja California Sur, Mexico
FIGURE 1. Fish collection sites in Baja California Sur, Mexico: 1. Oasis San José del Cabo (23° 03' 32" N, 109° 41' 28.8" W); 2. Stream La Tinaja-Miraflores (23° 21' 59.4" N, 109° 45' 19.2" W); 3. Stream Santiago (Boca de la Sierra) (23° 26' 24" N, 109° 48' 27.9" W); 4. Pond Las Pocitas (24° 24' 08.1" N, 111° 06' 10.8" W); 5. Reservoir San Pedro (24° 50' 21,3" N, 111° 04' 54.8" W); 6. Stream at the Misión San Luis Gonzaga (24° 54' 34.2" N, 111° 17' 27.0" W); 7. Oasis La Purísima (26° 09' 30.2" N, 112° 7' 43.6" W); 8. Stream San José de Magdalena (27° 03' 57.3" N, 112° 12' 41.3" W); 9. Oasis San Ignacio (27° 10' 30.2" N, 112° 52' 2.8" W); 10. Stream San Joaquín El Sauzal (27° 31' 29.4" N, 112° 56' 54.4" W); 11. Pond Poza Larga (27° 16' 28" N, 112° 54' 49.5" W); 12. Pond Corralitos (27° 13' 02.7" N, 112° 59' 17.4" W); 13. Pond Los Pinos (27° 12' 38.6" N, 112° 59' 53.7" W).
Data for: Non-host species reduce parasite infection in a focal host species within experimental fish communities
<p class="MsoCommentText">The dilution effect describes the negative association between host biodiversity and the risk of infectious disease. Tests designed to understand the relative roles of host species richness, host species identity, and rates of exposure within experimental host communities would help resolve ongoing contention regarding the importance and generality of dilution effects. We exposed fathead minnows to infective larvae of the trematode, <i>Ornithodiplostomum ptychocheilus </i>in minnow-only containers and in mixed containers that held 1-3 other species of fish. Parasite infection was estimated as the numbers of encysted worms (i.e., brainworms) present in minnows following exposure. The results of exposure trials showed that non-minnow fish species were incompatible with <i>O. ptychocheilus</i> larvae. There was no reduction in mean brainworm counts in minnows in mixed containers with brook sticklebacks or longnose dace. In contrast, brainworm counts in minnows declined by 51% and 27% in mesocosms and aquaria, respectively, when they co-occurred with emerald shiners. Dilution within minnow + shiner containers may arise from shiner-induced alterations in minnow or parasite behaviours that reduced encounter rates between minnows and parasite larvae. Alternatively, shiners may act as parasite sinks for parasite larvae. These results highlight the role of host-species identity in the dilution effect. Our results also emphasize the complex and idiosyncratic effects of host community composition on rates of parasite infection within contemporary host communities that contain combinations of introduced and native species.</p>
Parasite communities of fishes from Northeastern Baltic Sea (data in Valtonen et al., 2001)
<p>Data on the parasite communities from 27 out of 31 sympatric host species from the Northeastern Bothnian Bay, Baltic Sea, originally used in</p> <p>Valtonen, E. T., K. Pulkkinen, R. Poulin, and M. Julkunen. 2001. The structure of parasite component communities in brackish water fishes of the northeastern Baltic Sea. Parasitology 122:471–481.</p> <p> </p> <p>Freshwater data was additionally used in one of the Natural antagonistic communities. These data also comprise 22 host individual-level datasets analysed in the Host sampling completeness gradient in</p> <p>Llopis‐Belenguer, C., J. A. Balbuena, I. Blasco‐Costa, A. Karvonen, V. Sarabeev, and J. Jokela. 2022. Sensitivity of bipartite network analyses to incomplete sampling and taxonomic uncertainty. Ecology</p> <p> </p> <p>Abbreviations:</p> <ul> <li>no: host number</li> <li>month: month of the sampling</li> <li>year: sampling place; 77: 1977; 78: 1978; 79: 1979</li> <li>place: sampling place</li> <li>length: fish body length</li> <li>weight: fish body weight</li> <li>sex: host sex; 1: male; 2: female</li> <li>degree: maturation stage</li> <li>hsp: host species</li> </ul> <p> </p> <p>Host species abbreviations:</p> <ul> <li>abra: Abramis brama</li> <li>aalb: Alburnus alburnus</li> <li>ccar: Carassius carassius</li> <li>char: Clupea harengus</li> <li>calb: Coregonus albula</li> <li>clav: Coregonus lavaretus lavaretus</li> <li>cwid: Coregonus lavaretus widegreni</li> <li>eluc: Esox Lucius</li> <li>gmor: Gadus morhua</li> <li>gacu: Gasterosteus aculeatus</li> <li>gcer: Gymnocephalus cernuus</li> <li>lflu: Lampetra fluviatilis</li> <li>lidu: Leuciscus idus</li> <li>lleu: Leuciscus leuciscus</li> <li>llip: Liparis liparis</li> <li>llot: Lota lota</li> <li>msco: Myoxocephalus scorpius</li> <li>oesp: Osmerus eperlanus</li> <li>pflu: Perca fluviatilis</li> <li>ppho: Phoxinus phoxinus</li> <li>pfle: Platichthys fesus</li> <li>pmin: Pomatoschistus minutus</li> <li>ppun: Pungitius pungitius</li> <li>rrut: Rutilus rutilus</li> <li>ssal: Salmo salar</li> <li>stru: Salmo trutta</li> <li>zviv: Zoarches viviparus</li> </ul> <p> </p> <p>Parasite species abbreviations:</p> <ul> <li>aangu: Acanthocephalus anguillae</li> <li>afoli: Argulus foliaceus</li> <li>aisos: Allocreadium isosporum</li> <li>aluci: Acanthocephalus lucii</li> <li>aperc: Achtheres percarum</li> <li>azluc: Azygia lucii</li> <li>bluci: Bunodera luciopercae</li> <li>cfari: Cystidicola farionis</li> <li>cfenn: Caryophyllaeides fennica</li> <li>clacu: Camallanus lacustris</li> <li>cmam: Cystobranchus mammilatus</li> <li>coscu: Contracaecum osculatum</li> <li>cseme: Corynosoma semerme</li> <li>cstru: Corynosoma strumosum</li> <li>ddend: Diphyllobothrium dendriticum</li> <li>dditr: Diphyllobothrium ditremum</li> <li>desmsp: Desmidocercella sp</li> <li>diphsp: Diphyllobothrium sp in Clupea harengus</li> <li>dlatu: Diphyllobothrium latum</li> <li>dsagi: Discocotyle sagittata</li> <li>dspat: Diplostomum spathaceum</li> <li>ebore: Echinorhynchus borealis</li> <li>eboth: Echinorhynchus bothniensis</li> <li>ecras: Eubothrium crassum</li> <li>egadi: Echinorhynchus gadi</li> <li>erugo: Eubothrium rugosum</li> <li>esalm: Echinorhynchus salmonis</li> <li>esieb: Ergasilus sieboldi</li> <li>eubospp: Juvenile stages of Eubothrium from Zoarches viviparus that could not be identified to the species level</li> <li>eubsp: Juvenile stages of Eubothrium from Gadus morhua and Clupea harengus that could not be identified to the species level</li> <li>eubspp: Juvenile stages of Eubothrium from Gasterosteus aculeatus, Gymnocephalus cernuus and Pungitius pungitius that could not be identified to the species level</li> <li>eustsp: Eustrongylides mergorum</li> <li>gloch: Anodonta piscinalis</li> <li>hadun: Hysterothylacium aduncum</li> <li>hauct: Hysterothylacium auctum</li> <li>hovip: Henneguya oviperda (Myxosporidia)</li> <li>hzsch: Henneguya zschokke (Valtonen et al 1988) (Myxosporidia)</li> <li>ichtsp: Ichthyocotylurus erraticus from Pungitius pungitius</li> <li>ierra: Ichthyocotylurus erraticus</li> <li>ivari: Ichthyocotylurus variegatus</li> <li>kross: Khawia rossitensis</li> <li>lcypr: Lernaea cyprinacea</li> <li>nemat: Nematoda from Lampetra fluviatilis</li> <li>nematsp: Nematoda from Leuciscus leuciscus and Perca fluviatilis</li> <li>nematsuo: Nematoda from Gadus morhua and Salmo trutta</li> <li>nruti: Neoechinorhynchus rutili</li> <li>pcern: Proteocephalus cernuae</li> <li>pexig: Proteocephalus exiguus</li> <li>pfili: Proteocephalus filicollis</li> <li>pgeom: Piscicola geometra</li> <li>phomo: Phyllodistomum homoion</li> <li>plong: Proteocephalus longicollis</li> <li>pperc: Proteocephalus percae</li> <li>prospp: Proteocephalus sp</li> <li>protsp: Proteocephalus gobiorum</li> <li>psalv: Pseudocapillaria salvelini</li> <li>pseusp: Pseudocapillaria sp</li> <li>ptoru: Proteocephalus torulosus</li> <li>racus: Raphidascaris acus</li> <li>score: Salmincola coregonorum</li> <li>sexte: Salmincola extensus</li> <li>sglob: Sphaerostoma globiporum</li> <li>spung: Schistocephalus pungitii</li> <li>ssoli: Schistocephalus solidus</li> <li>tclav: Tylodelphys clavata</li> <li>tcras: Triaenophorus crassus</li> <li>tgast: Thersitina gasterostei</li> <li>tnodu: Triaenophorus nodulosus</li> <li>ttrut: Truttaedacnitis truttae</li> </ul>
Figure 2 in Description of Elthusa aquabio sp. n. (Crustacea: Isopoda: Cymothoidae), a branchial fish parasitic isopod from Indian waters
Figure 2. Elthusa aquabio sp. n. ovigerous female holotype (minimally dissected) (Reg. No. ZSI/WGRC/I. R./INV. 23886). A, dorsal view; B, cephalon dorsal view; C, cephalon ventral view.
Figure 1 in Description of Elthusa aquabio sp. n. (Crustacea: Isopoda: Cymothoidae), a branchial fish parasitic isopod from Indian waters
Figure 1. Elthusa aquabio sp. n. ovigerous female holotype (minimally dissected) (Reg. No. ZSI/WGRC/I. R./INV. 23886). A, dorsal view; B, ventral view; C, frontal view; D, lateral view.
Figure 4 in Description of Elthusa aquabio sp. n. (Crustacea: Isopoda: Cymothoidae), a branchial fish parasitic isopod from Indian waters
Figure 4. Elthusa aquabio sp. n. ovigerous female holotype (minimally dissected) (Reg. No. ZSI/WGRC/I. R./INV. 23886). A–G, pereopods 1–7.
Figure 5 in Description of Elthusa aquabio sp. n. (Crustacea: Isopoda: Cymothoidae), a branchial fish parasitic isopod from Indian waters
Figure 5. Elthusa aquabio sp. n. ovigerous female holotype (minimally dissected) (Reg. No. ZSI/WGRC/I. R./INV. 23886). A–E, pleopods 1–5; F, brood pouch; G, uropod; H, pleotelson and uropods.
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