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Record #171211:

Divergent patterns of variation in major histocompatibility complex class II alleles among Antarctic phocid pinnipeds / Niles Lehman, Debra J. Decker, Brent S. Stewart.

Title: Divergent patterns of variation in major histocompatibility complex class II alleles among Antarctic phocid pinnipeds / Niles Lehman, Debra J. Decker, Brent S. Stewart.
Author(s): Lehman, Niles.
Decker, Debra J.
Stewart, Brent S.
Date: 2004.
In: Journal of Mammalogy. (2004.), Vol. 85(6) (2004)
Abstract: Reports findings of genetic diversity of Ross, Weddell, crabeater and leopard seals from eastern Ross Sea, Antarctica, using samples collected during 1999-2000, compares with microsatellite data, and discusses with reference to framework for establishing molecular-ecological hypotheses. Study focused on class II loci to examine bacterial and eukaryotic parasite pathogenic exposure, and investigated polymorphism in 162 base pairs of 2nd exon of DQα locus, which contains peptide-binding region of antigen-presenting subunit (\alpha₁) of major histocompatibility complex. Substantial differences in patterns of population genetic diversity were found, crabeater seals being most diverse with 2 DQα loci, 39 distinct alleles among 30 seals, and at least 93% observed heterozygosity. Leopard seals were least diverse, with only 1 allele detected in 13 seals. Discusses results in relation to interspecific variation in life histories, population biology, and ecological niches of species, and previously reported patterns of microsatellite genetic variability. Findings suggest that responses to past evolutionary pressures have differed in each species, and hence interspecific variation in future responses to introduced infectious diseases may also vary substantially.
Notes:

Journal of Mammalogy. Vol. 85(6) :1215-1224 (2004).

Keywords: 59 -- Zoology.
599(26) -- Sea mammals.
599.745 -- Pinnipedia.
599.745.3 -- Phocidae: Hydrurga leptonyx.
599.745.3 -- Phocidae: Leptonychotes weddelli.
599.745.3 -- Phocidae: Lobodon carcinophagus.
599.745.3 -- Phocidae: Ommatophoca rossii.
591.1 -- Animal physiology.
591.15 -- Genetic variation.
575 -- Genetics.
576.8 -- Parasitology.
591.8 -- Histology.
575.2 -- Variation, biological.
91(08) -- Expeditions: 1955- US Antarctic Program.
91(08) -- Expeditions: 1999-2000 USAP.
H6 -- Zoology: mammals.
(*7) -- Antarctic regions.
(*76) -- Ross Dependency.
(*77) -- Antarctica, Pacific sector.
(*80) -- Southern Ocean.
(*881) -- Ross Sea.
SPRI record no.: 171211

MARCXML

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001 SPRI-171211
005 20220925190019.0
007 ta
008 220925s2004####xx#ab#|##|###|0||#0|eng#d
035 ## ‡aSPRI-171211
040 ## ‡aUkCU-P‡beng‡eaacr
100 1# ‡aLehman, Niles.
245 10 ‡aDivergent patterns of variation in major histocompatibility complex class II alleles among Antarctic phocid pinnipeds /‡cNiles Lehman, Debra J. Decker, Brent S. Stewart.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2004.
300 ## ‡ap. 1215-1224 :‡bdiags., tables, map.
500 ## ‡aJournal of Mammalogy. Vol. 85(6) :1215-1224 (2004).
520 3# ‡aReports findings of genetic diversity of Ross, Weddell, crabeater and leopard seals from eastern Ross Sea, Antarctica, using samples collected during 1999-2000, compares with microsatellite data, and discusses with reference to framework for establishing molecular-ecological hypotheses. Study focused on class II loci to examine bacterial and eukaryotic parasite pathogenic exposure, and investigated polymorphism in 162 base pairs of 2nd exon of DQα locus, which contains peptide-binding region of antigen-presenting subunit (\alpha₁) of major histocompatibility complex. Substantial differences in patterns of population genetic diversity were found, crabeater seals being most diverse with 2 DQα loci, 39 distinct alleles among 30 seals, and at least 93% observed heterozygosity. Leopard seals were least diverse, with only 1 allele detected in 13 seals. Discusses results in relation to interspecific variation in life histories, population biology, and ecological niches of species, and previously reported patterns of microsatellite genetic variability. Findings suggest that responses to past evolutionary pressures have differed in each species, and hence interspecific variation in future responses to introduced infectious diseases may also vary substantially.
650 07 ‡a59 -- Zoology.‡2udc
650 07 ‡a599(26) -- Sea mammals.‡2udc
650 07 ‡a599.745 -- Pinnipedia.‡2udc
650 07 ‡a599.745.3 -- Phocidae: Hydrurga leptonyx.‡2udc
650 07 ‡a599.745.3 -- Phocidae: Leptonychotes weddelli.‡2udc
650 07 ‡a599.745.3 -- Phocidae: Lobodon carcinophagus.‡2udc
650 07 ‡a599.745.3 -- Phocidae: Ommatophoca rossii.‡2udc
650 07 ‡a591.1 -- Animal physiology.‡2udc
650 07 ‡a591.15 -- Genetic variation.‡2udc
650 07 ‡a575 -- Genetics.‡2udc
650 07 ‡a576.8 -- Parasitology.‡2udc
650 07 ‡a591.8 -- Histology.‡2udc
650 07 ‡a575.2 -- Variation, biological.‡2udc
650 07 ‡a91(08) -- Expeditions: 1955- US Antarctic Program.‡2udc
650 07 ‡a91(08) -- Expeditions: 1999-2000 USAP.‡2udc
650 07 ‡aH6 -- Zoology: mammals.‡2local
651 #7 ‡a(*7) -- Antarctic regions.‡2udc
651 #7 ‡a(*76) -- Ross Dependency.‡2udc
651 #7 ‡a(*77) -- Antarctica, Pacific sector.‡2udc
651 #7 ‡a(*80) -- Southern Ocean.‡2udc
651 #7 ‡a(*881) -- Ross Sea.‡2udc
700 1# ‡aDecker, Debra J.
700 1# ‡aStewart, Brent S.
773 0# ‡7nnas ‡tJournal of Mammalogy. ‡gVol. 85(6) (2004) ‡wSPRI-22378
916 ## ‡aHS
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20220925 ‡bHS