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Fig. 8 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 8. LM micrographs of genital spines of a ♀ Corynosoma strumosum (HWML 39481–1158-2) from a grey seal, Halichoerus grypus, from the archipelago of Åland (Finland). a. Posterior of trunk. b. Enlargement of rectangular region in subfigure a.

Fig. 7 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 7. SEM micrographs of Corynosoma strumosum from grey seals, Halichoerus grypus, in the Swedish Baltic Sea. a. ♂, whole worm, ventro-lateral view, from the Bothnian Sea, Uppland, Östhammar. b. Ventral spination on the hind-trunk of a ♂ restricted to one-third of its length only. c. Proboscis of a ♂, lateral view, showing the spineless neck and the arrangement of the hooks. d. Posterior end of a ♂ showing the extended copulatory bursa.

Fig. 5 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 5. SEM micrographs of Corynosoma semerme from grey seals, Halichoerus grypus, in the Swedish Baltic Sea. a. ♀, entire worm, ventro-lateral view, from the Bothnian Sea, Hälsingland, Stocka. Spines cover the entire ventral surface of the hind-trunk. b. ♂, whole worm, ventral view, from the Bothnian Sea, Hälsningland, Stocka. Ventral spination of the entire hind-trunk and numerous genital spines. c. Proboscis of a ♀, ventral view, showing the arrangement of the hooks. d. Base of proboscis of a ♀, lateral view, showing the spineless neck and the posterior and middle series of hooks. e. Anterior end of proboscis of a ♀ showing the bare tip. f. Trunk spines of the fore-trunk of a ♂, ventral view. g. Posterior end of a ♀ showing the trunk-spines that extend over the ventral surface as far as the gonopore. h. Posterior end of a ♂ with numerous genital spines.

Fig. 4 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 4. LM micrographs showing posterior end of Corynosoma magdaleni from a grey seal, Halichoerus grypus, from the archipelago of Åland (Finland). a. ♂ showing everted bursa and genital spine (arrows) (HWML 39480–1041-3). b. ♀ (HWML 39480–1141-2).

Fig. 9 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 9. Size differences between infected and non-infected cormorants. The black line represents the median length (a and b) and median weight (c). The grey box represents the middle 50% of the data (n = 65).

Fig. 7 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 7. Size differences of cormorants between Kustavi and Airisto in terms of body length and body weight (n = 65). The black line represents the median length and weight. The grey box represents the middle 50% of the data (n = 65).

Fig. 6 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 6. Left: Body length of herring in the Archipelago Sea (n = 1167) and the Bothnian Sea (n = 1528) in 2018 and in the infected and non-infected herring (n = 7002). The black line represents the median length, and the grey box is the middle 50% of the data.

Fig. 2 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 2. Mean annual salinity (PSU) and temperature (T, ◦C) of the winter months (January–April) in the Bothnian Sea at 0–50 m depth during 1980–2021. Data from ICES Oceanographic dataset, 2021. ICES, Copenhagen.

Fig. 8 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 8. Size differences of cormorants between sexes (a, b, and c) and adults and juveniles (d, e, and f). The black line represents the median length (a, b, d, and e) and median weight (c and f). The grey box represents the middle 50% of the data (n = 65).

Fig. 3 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 3. Acanthocephala parasites in the body cavity of a herring (left; the red circle indicates the position of worms) and on the inner surface of the intestine of a cormorant (right). The upper photo indicates the size of parasites compared to a match (photos: J. Sahlst´en). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

Fig. 1 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 1. Map showing the sampling sites in the northern Baltic Sea: A = Archipelago Sea, B = Uusikaupunki, C = Merikarvia. The sampling locations in region A: 1 = Taivassalo, 2 = Velkua trawl area, 3 = western Rym¨attyl¨a, 4 = northern Airisto Inlet, 5 = Peimari.

Fig. 5 in The prevalence of Corynosoma parasite worms in the great cormorants and the Baltic herring in the northern Baltic Sea, Finland

Fig. 5. Prevalence (%) of the corynosoma infection in the Baltic herring in the Bothnian Sea (n = 1528) and the Archipelago Sea in 2018 (n = 1167). The black solid line expresses a linear trend: y = 7.55x + 6.33, r = 1.00.

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Data on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala: Polymorphidae) from Baltic grey (Halichoerus grypus) and ringed seals (Pusa hispida)

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FIGURE 3 in First record of Hexaglandula corynosoma (Travassos, 1915) Petrochenko, 1958 (Acanthocephala: Polymorphidae) in intermediate and definitive hosts in Mexico

FIGURE 3. Cystacanth of Hexaglandula corynosoma from Uca spinicarpa, Progreso lagoon system, Yucatán. Scale bar = 0.1 mm.

FIGURE 2 in First record of Hexaglandula corynosoma (Travassos, 1915) Petrochenko, 1958 (Acanthocephala: Polymorphidae) in intermediate and definitive hosts in Mexico

FIGURE 2. Scanning electron microscopy of adult forms of Hexaglandula corynosoma; A. Anterior end showing proboscis and trunk spines, B. Proboscis. Scale bars: A = 250 µm; B. = 100 µm.

FIGURE 1 in First record of Hexaglandula corynosoma (Travassos, 1915) Petrochenko, 1958 (Acanthocephala: Polymorphidae) in intermediate and definitive hosts in Mexico

FIGURE 1. Adult of Hexaglandula corynosoma from Nyctanassa violacea, Ría Lagartos, Yucatán. Scale bar = 0.1 mm

FIGURE 4. Maximum parsimony cladogram depicting phylogenetic relationships among 11 isolates representing 4 in First record of Hexaglandula corynosoma (Travassos, 1915) Petrochenko, 1958 (Acanthocephala: Polymorphidae) in intermediate and definitive hosts in Mexico

FIGURE 4. Maximum parsimony cladogram depicting phylogenetic relationships among 11 isolates representing 4 species of polymorphids. Numbers in internodes represent bootstrap support values for the Neighbor-Joining and Parsimony analyses, respectively. * = Cystacanth of Hexaglandula corynosoma.

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Fig. 6 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 6. Variation in the morphology and size of copulatory caps found on ♀ Corynosoma semerme from a ringed seal, Pusa hispida, in the Swedish Baltic Sea. Images are maximum intensity projections of confocal image stacks. The copulatory caps show strong autofluorescence when excited with a 405 nm laser. All scalebars represent 200 µm.

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Fig. 3 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 3. SEM micrographs of Corynosma magdaleni from grey seals, Halichoerus grypus, in the Swedish Baltic Sea. a. ♀, entire worm, ventro-lateral view, from the Bothnian Bay, Norrbotten, Luleå. Ventral spination extends over more than half the length of the hind-trunk. b. Proboscis of a ♀ showing the spineless neck and the arrangement of the hooks. c. Posterior end of a ♂ showing the extended copulatory bursa. d. Posterior end of a ♀ in which the gonopore has been retracted into the gential vestibule.

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Fig. 2 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 2. Schematic diagram of praesoma and trunk of a male of Corynosoma semerme illustrating the length measurements recorded from all three species of Coryonosma; internal organs except proboscis receptacle excluded. 1 = fore-trunk. 2 = hind-trunk. 3 = proboscis. 4 = neck. 5 = proboscis receptacle.