منابع مشابه
Thrips pollination of Mesozoic gymnosperms.
Within modern gymnosperms, conifers and Ginkgo are exclusively wind pollinated whereas many gnetaleans and cycads are insect pollinated. For cycads, thrips are specialized pollinators. We report such a specialized pollination mode from Early Cretaceous amber of Spain, wherein four female thrips representing a genus and two species in the family Melanthripidae were covered by abundant Cycadopite...
متن کاملThrips Pollination in the Lowland Forest of New Zealand
Thrips, in particular Thrips obscuratus, were collected from the flowers of 13 species of trees common in the lowland forest of New Zealand. Many New Zealand trees have flowers which are small, shallow, clustered, and lack bright colours. This un specialized floral form is suitable for pollination by small insects, such as flies and thrips. Thrips obscuratus is among the most frequent visitors ...
متن کاملInflorescence dimorphism, heterodichogamy and thrips pollination in Platycarya strobilacea (Juglandaceae)
BACKGROUND AND AIMS Unlike other taxa in Juglandaceae or in closely related families, which are anemophilous, Platycarya strobilacea has been suggested to be entomophilous. In Juglandaceae, Juglans and Carya show heterodichogamy, a reproductive strategy in which two morphs coexist in a population and undergo synchronous reciprocal sex changes. However, there has been no study focusing on hetero...
متن کاملThrips pollination of androdioecious Castilla elastica (Moraceae) in a seasonal tropical forest.
Androdioecy is a rare sexual system in nature, as predicted theoretically. Among the androecious species reported so far, Castilla elastica (Moraceae) is unique in that flowers are unisexual and staminate and pistillate flowers on cosexual plants are produced on different inflorescences. In addition, inflorescence structure of staminate inflorescences on males and staminate and pistillate inflo...
متن کاملEvolution and biogeography of gymnosperms.
Living gymnosperms comprise only a little more than 1000 species, but represent four of the five main lineages of seed plants, including cycads, ginkgos, gnetophytes and conifers. This group has huge ecological and economic value, and has drawn great interest from the scientific community. Here we review recent advances in our understanding of gymnosperm evolution and biogeography, including ph...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2012
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1120499109