Evidence for local outbreeding depression in the Mediterranean island endemic Anchusa crispa Viv. (Boraginaceae)
Article Abstract:
Outbreeding depression may be in effect on a very local scale within populations of the rare endemic species Anchusa crispa Viv., and important implications for rare plant conservation exist. The species is endemic to a Mediterranean island and has no spatial or temporal floral mechanism that would be helpful to outcrossing. Populatinos are completely homozygous and fixed for single, sometimes different, alleles at several loci.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2001
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Species-wide homogeneity of nuclear ribosomal ITS2 sequences in the spider mite Tetranychus urticae contrasts with extensive mitochondrial COI polymorphism
Article Abstract:
Geographical variation in the mitochondrial cytochrome oxidase I gene (COI) and the second nuclear ribosomal internal transcribed spacer (ITS2) in the spider mite Tetranychus urticae Koch, a cosmopolitan pest that damages various crops, are discussed. Specieswide homogeneity of nuclear ribosomal ITS2 sequences is seen in the mite, in contrast to extensive mitochondrial COI polymorphism.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 1998
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Floral variation and style-morph ratios
Article Abstract:
Floral variation and style-morph ratios are discussed relative to evolution and maintenance of stigma-height dimorphism in Narcissus, a genus of insect-pollinated Mediterranean geophyte. Biased style-morph ratios for the most part come from morph-specific differences in assortative mating.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2000
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