Volume 11, Issue 5, 1 September 1998

Partial local mate competition and the sex ratio: A study on non‐pollinating fig wasps

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Geographic structure of lineage associations in a plant‐bacterial mutualism

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The evolution of diet breadth: Monophagy and polyphagy in swallowtail butterflies

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Inbreeding depression affects pollen performance in Cucurbita texana

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Phenotypic selection in a natural population of Impatiens pallida Nutt. (Balsaminaceae)

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Does time until mating affect progeny sex ratio? A manipulative experiment with the parasitoid wasp Aphelinus asychis

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Effects of flower number on estimated pollen transfer in natural populations of three hermaphroditic species: an experiment with fluorescent dye

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Cruel GeometryA review by David G. A. Castle: Unifying Biology: The Evolutionary Synthesis and Evolutionary Biology. By V. B. Smocovitis. Princeton, NJ: Princeton University Press. 1996. xix, 230 pp. Cloth: $29.95/£25, ISBN 0‐691‐03343‐9.

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A Difficult TransitionA review by A. Minelli: Amniote Origins, Completing the Transition to Land. By Stuart S. Sumida and Karen L. M. Martin (Eds.). Academic Press, San Diego‐London‐Boston‐New York‐Sydney‐Tokyo‐Toronto. 1997. ISBN 0‐12‐676460‐3.

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Basic Theory, Plain and SimpleA review by Michael Doebeli: Population Biology — Concepts and Models. By Alan Hastings. Springer, New York, 1997. xvi + 220 pages. ISBN 0‐387‐94853‐8.

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