Maternal antibodies against Plasmodium spp. in African black-footed penguin (Spheniscus demersus) chicks.

T. K. Graczyk, M. R. Cranfield, M. L. Shaw, L. E. Craig

Research output: Contribution to journalArticle

Abstract

Anti-Plasmodium spp. antibody titers of mating pairs of adult, captive-reared, African black-footed penguins (Spheniscus demersus) and their chicks were determined using the enzyme-linked-immunosorbent assay (ELISA). Two Plasmodium falciparum antigens were used for the ELISA: R32tet32 (sporozoite antigen), and crude red blood cell extract (CRBCE). Eighteen chicks were bled weekly for ten weeks starting with their day of hatching. The yolk sacs of two penguin eggs were biopsed for ELISA-detectable maternal antibodies (MAB). None of the 28 adult penguins were parasitemic by Giemsa-stained thin blood smear; however, all had anti-Plasmodium spp. immunoglobulins reacting with P. falciparum antigens. All 18 newly hatched chicks had anti-Plasmodium spp. MAB while housed in a mosquito-free environment. The level of MAB in the newly hatched chicks was correlated significantly (P <0.001) with antibody level detected in their female parents (R32tet32: r = 0.87, CRBCE: r = 0.89). No correlation was found between antibody titers of the newly hatched chicks and their male parents. The level of maternal-fetal antibodies was regressed significantly (P <0.001) over the 10-week period. Penguin chicks over 10 weeks of age had no anti-Plasmodium spp. MAB. Egg-yolk samples had significantly (P <0.03) higher MAB titers than female parents that laid these eggs.

Original languageEnglish (US)
Pages (from-to)365-371
Number of pages7
JournalJournal of Wildlife Diseases
Volume30
Issue number3
StatePublished - Jul 1994

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Spheniscidae
Plasmodium
maternal immunity
penguins
antibody
chicks
Mothers
Antibodies
antibodies
Plasmodium falciparum
enzyme-linked immunosorbent assay
antigens
antigen
erythrocytes
blood
Enzyme-Linked Immunosorbent Assay
assay
enzyme
egg
Cell Extracts

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Graczyk, T. K., Cranfield, M. R., Shaw, M. L., & Craig, L. E. (1994). Maternal antibodies against Plasmodium spp. in African black-footed penguin (Spheniscus demersus) chicks. Journal of Wildlife Diseases, 30(3), 365-371.

Maternal antibodies against Plasmodium spp. in African black-footed penguin (Spheniscus demersus) chicks. / Graczyk, T. K.; Cranfield, M. R.; Shaw, M. L.; Craig, L. E.

In: Journal of Wildlife Diseases, Vol. 30, No. 3, 07.1994, p. 365-371.

Research output: Contribution to journalArticle

Graczyk, TK, Cranfield, MR, Shaw, ML & Craig, LE 1994, 'Maternal antibodies against Plasmodium spp. in African black-footed penguin (Spheniscus demersus) chicks.', Journal of Wildlife Diseases, vol. 30, no. 3, pp. 365-371.
Graczyk, T. K. ; Cranfield, M. R. ; Shaw, M. L. ; Craig, L. E. / Maternal antibodies against Plasmodium spp. in African black-footed penguin (Spheniscus demersus) chicks. In: Journal of Wildlife Diseases. 1994 ; Vol. 30, No. 3. pp. 365-371.
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