Preferences of Pollinators and Herbivores in Gynodioecious Geranium sylvaticum
نویسندگان
چکیده
منابع مشابه
Sex allocation of females and hermaphrodites in the gynodioecious Geranium sylvaticum.
Seed production and patterns of sex allocation were studied in female and hermaphroditic plants in two gynodioecious populations of Geranium sylvaticum (Geraniaceae). Females produced more flower buds and seeds than hermaphrodites in one of the two study populations. The other female traits measured (pistil biomass, seed number per fruit, individual seed mass) did not differ between the gender ...
متن کاملFemale frequency and relative fitness of females and hermaphrodites in gynodioecious Geranium sylvaticum (Geraniaceae).
We determined female frequency of 23 populations of the gynodioecious Geranium sylvaticum (Geraniaceae) in Finland. We compared our results to previous results on this species from the 1960s in order to reveal putative changes in female frequencies. Because females may be maintained in gynodioecious populations if their seed production or offspring quality is higher than that of hermaphrodites,...
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Many zoophilous plants attract their pollinators by offering nectar as a reward. In gynodioecious plants (i.e. populations are composed of female and hermaphrodite individuals) nectar production has been repeatedly reported to be larger in hermaphrodite compared to female flowers even though nectar production across the different floral phases in dichogamous plants (i.e. plants with time separa...
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The relationship between plants and insects is influenced by insects' behavioral decisions during foraging and oviposition. In mutualistic pollinators and antagonistic herbivores, past experience (learning) affects such decisions, which ultimately can impact plant fitness. The higher levels of dietary generalism in pollinators than in herbivores may be an explanation for the differences in lear...
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Plants often face a dilemma in attracting mutualists versus deterring antagonists. This dilemma may be exceptionally challenging when the mutualist and antagonist are the same visitor. It has now been demonstrated how plants can resolve this conflict through a novel change in flowering traits.
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 2005
ISSN: 0305-7364,1095-8290
DOI: 10.1093/aob/mci094