On the occurrence of juvenile acanthocephalans of the genus Corynosoma Lühe, 1904 in fishes off South Georgia and south Shetland Islands (the Antarctic)

Zdzitowiecki, K.

doi:10.3750/aip1978.08.2.07

Cited by 9 publications

(21 citation statements)

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“…Those studied (27 from birds, 32 from fishes, and 2 from amphipods) had 18-22 rows of hooks with 11-16 hooks per row (the last 2-3 being large spines). The extent of spination on the trunk in males and females was identical to previous descriptions of C. hamanni (Edmonds, 1957 ;Jones and Williams, 1969 ;Holloway and Nickol, 1970 ;Zdzitowiecki, 1978b ; and others). They were also generally similar in the form of the lemnisci and the relative length of the proboscis receptacle.…”

Section: Resultssupporting

confidence: 68%

“…As there is some confusion about the validity of these nominal taxa, it seems preferable to refer all of the present specimens to C. hamanni sensu lato, much as Zdzitowiecki (1978b) concluded for cysticanths collected from species of antarctic fishes in the South Shetland Islands and at South Georgia.…”

Section: Resultsmentioning

confidence: 99%

“…hamanni was characterized by a proboscis armed with 18-21 rows of hooks with 12-15 per row by Edmonds (1957) ; 18-23 rows with 11-15 hooks by Nickol and Holloway (1968) ; and 19-22 rows with 11-17 hooks by Zdzitowiecki (1978b). In C. antarcticum, Johnston and Best (1937) found 18 rows of hooks with 14-15 per row and in C. sipho, Railliet and Henry (1907) found 21-22 rows each with 11 hooks.…”

Section: Resultsmentioning

confidence: 99%

“…Remarks : Zdzitowiecki (1978aZdzitowiecki ( , 1978b described this species on the basis of a mature male from a southern black-backed gull at King George Island, and from cysticanths from a fish, Parachaenichthys georgianus (Fischer), from South Georgia. Gravid specimens were not obtained, and it was suggested that C. shackletoni might be typically a parasite of marine mammals rather than of seabirds (Zdzitowiecki, 1978a).…”

Section: Resultsmentioning

confidence: 99%

“…However, there are relatively few records of this genus from seabirds in these geographic regions (Johnston and Edmonds, 1953 ;Edmonds, 1955 ;Holloway and Bier, 1967 ;Jones and Williams, 1969 ;Williams et al, 1974 ;Zdzitowiecki, 1978aZdzitowiecki, , 1978b. Avian hosts are generally regarded as incidental in the life cycles of Corynosoma spp.…”

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confidence: 99%

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Aspects of ecology and biogeography of Acanthocephala in antarctic seabirds

Hoberg

1986

Ann. Parasitol. Hum. Comp.

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SUMMARY. Four species of acanthocephalans are reported from seabirds, nototheniid fishes and gammaridean amphipods in the western Antarctic. Corynosoma hamanni (von Linstow, 1892) was found in Phalacrocorax atriceps King, Chionis alba (Gmelin), Larus dominicanus Lichtenstein, and Catharacta lonnbergi (Mathews). The complete life cycle of this acanthocephalan was elucidated : cysticanths develop in the haemocoel of a gammaridean amphipod, Pontogeneiella sp. of the family Eusiridae and presumably, following ingestion of parasitized amphipods, encyst in the body cavity of antarctic fishes of several species. Corynosoma singularis Skriabin and Nikol'skii, 1971 was found only in P. atriceps. Corynosoma bullosum (von Linstow, 1892) occurred in both P. atri ceps and Pygoscelis papua (Forster). Neither of these species of Corynosoma had previously been reported from avian hosts. Corynosoma shackletoni Zdzitowiecki, 1978 was recorded only as a parasite of P. papua. The first known gravid females of this species were found during this study, indicating that C. shackletoni is a typical parasite of avian, rather than mammalian, final hosts. It is the first acanthocephalan known to typically occur in an avian definitive host in Antarctica. The host-distribution of Corynosoma spp. in birds suggested that these parasites were being acquired from piscine or possibly amphipod prey, generally in nearshore situations. Seabirds representing the zooplanktivore feeding guild were not infected. This indicates that pelagic foodwebs, and other trophic pathways in which Euphausia superba Dana is a dominant prey organism, are probably not involved in the life cycles of Corynosoma spp. The host and geographic distribu tions of Corynosoma in piscine, avian, and mammalian hosts suggested that oceanographic factors, particularly the Antartic Convergence, could limit the ranges for some species of parasites. Hostparasite coevolution appears to have had an important influence on the species composition of the acanthocephalan fauna of seabirds and marine mammals in Antarctica.

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Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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