Photomicrographic images of some features of Uncinaria spp (Nematoda: Ancylostomatidae) from otariid pinnipeds

Lyons, E. T.; DeLong, Robert L.

doi:10.1007/s00436-005-1308-8

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…Possible reasons for the term hookworm are: (1) the anterior end is in a bent or hooked dorsal position and (2) the hooked feature of the bursal rays at the posterior end of males (Noble and Noble 1964). Photographs of some of these and other features of the morphology of U. lucasi from C. ursinus and Steller sea lions (Eumetopias jubata) have been published (Lyons 2005;Lyons and DeLong 2005).…”

Section: Hookwormsmentioning

confidence: 99%

Review of research on hookworms (Uncinaria lucasi Stiles, 1901) in northern fur seals (Callorhinus ursinus Linnaeus, 1758)

et al. 2011

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Section: Hookwormsmentioning

confidence: 99%

Review of research on hookworms (Uncinaria lucasi Stiles, 1901) in northern fur seals (Callorhinus ursinus Linnaeus, 1758)

et al. 2011

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“…Images of Uncinaria spp. from pinnipeds have been published recently (Castinel et al 2006;Lyons and DeLong 2005).…”

Section: Introductionmentioning

confidence: 99%

Hookworms (Uncinaria lucasi) and acanthocephalans (Corynosoma spp. and Bolbosoma spp.) found in dead northern fur seals (Callorhinus ursinus) on St. Paul Island, Alaska in 2007

et al. 2008

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Intestines of dead northern fur seals (Callorhinus ursinus) on St. Paul Island (SPI), Alaska were inspected for specific internal parasites (hookworms and acanthocephalans) in July and August, 2007. Pups (n=64) were examined for adult hookworms (Uncinaria lucasi) and four (6.25%) were infected. The number of specimens per infected pup was 1, 2, 2, or 408. Low prevalence was similar to that determined in the last investigation (2001) in dead fur seal pups on SPI by two of the present authors (Lyons and Spraker). Subadult males (SAMS-3-4 years old, n=115) were examined for acanthocephalans and 25 (21.7.0%) were infected. Adult Corynosoma (C. obtuscens, C. strumosum, and C. validum) (n=56) and immature Bolbosoma spp. (n=4) were found. Apparently, this is a new host record for C. obtuscens and C. validum. Notes were made on finding tapeworms. in 114 of the 115 SAMs. Examination of some specimens revealed scolices characteristic of Diphyllobothrium spp.

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“…Morphologically, U. sanguinis is very similar to the otariid hookworms U. lucasi and U. hamiltoni, demonstrating subtle morphological differences. An annular thickening of the base of the buccal capsule, observed in U. sanguinis and U. hamiltoni, was reported absent in the description of U. lucasi, but subsequently noted in other specimens (lyons and Delong 2005). Male specimens of U. sanguinis exhibit shorter anterolateral rays relative to the other lateral rays, a feature shared with U. hamiltoni, differentiating these species from U. lucasi which exhibits lateral rays of almost equal length (Baylis 1947).…”

Section: Resultsmentioning

confidence: 95%

Uncinaria sanguinis sp. n. (Nematoda: Ancylostomatidae) from the endangered Australian sea lion, Neophoca cinerea (Carnivora: Otariidae)

Marcus¹,

Higgins²,

Šlapeta³

et al. 2014

FOLIA PARASIT

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this study investigates the identity of hookworms parasitising the Australian sea lion, Neophoca cinerea (Péron), from three colonies in south Australia, Australia. the Australian sea lion is at risk of extinction because its population is small and genetically fragmented. Using morphological and molecular techniques, we describe a single novel species, Uncinaria sanguinis sp. n. (Nematoda: Ancylostomatidae). the new species is most similar to hookworms also parasitic in otariid hosts, Uncinaria lucasi stiles, 1901 and Uncinaria hamiltoni Baylis, 1933. comparative morphometrics offered limited utility for distinguishing between species within this genus whilst morphological features and differences in nuclear ribosomal DNA sequences delineated U. sanguinis sp. n. from named congeners. Male specimens of U. sanguinis sp. n. differ from U. lucasi and U. hamiltoni by relatively shorter anterolateral and externodorsal rays, respectively, and from other congeners by the relative lengths and angulations of bursal rays, and in the shape of the spicules. Female specimens of U. sanguinis sp. n. are differentiated from Uncinaria spp. parasitic in terrestrial mammals by differences in vulval anatomy and the larger size of their eggs, although are morphologically indistinguishable from U. lucasi and U. hamiltoni. Molecular techniques clearly delimited U. sanguinis sp. n. as a distinct novel species. obtaining baseline data on the parasites of wildlife hosts is important for the investigation of disease and the effective implementation and monitoring of conservation management.

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Photomicrographic images of some features of Uncinaria spp (Nematoda: Ancylostomatidae) from otariid pinnipeds

Cited by 6 publications

References 13 publications

Review of research on hookworms (Uncinaria lucasi Stiles, 1901) in northern fur seals (Callorhinus ursinus Linnaeus, 1758)

Review of research on hookworms (Uncinaria lucasi Stiles, 1901) in northern fur seals (Callorhinus ursinus Linnaeus, 1758)

Hookworms (Uncinaria lucasi) and acanthocephalans (Corynosoma spp. and Bolbosoma spp.) found in dead northern fur seals (Callorhinus ursinus) on St. Paul Island, Alaska in 2007

Uncinaria sanguinis sp. n. (Nematoda: Ancylostomatidae) from the endangered Australian sea lion, Neophoca cinerea (Carnivora: Otariidae)

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