Does the generalist parasitic plant Cuscuta campestris selectively forage in heterogeneous plant communities?
Data(s) |
2004
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Resumo |
Cuscuta spp. are holoparasitic plants that can simultaneously parasitise several host plants. It has been suggested that Cuscuta has evolved a foraging strategy based on a positive relationship between preuptake investment and subsequent reward on different host species. Here we establish reliable parasite size measures and show that parasitism on individuals of different host species alters the biomass of C. campestris but that within host species size and age also contributes to the heterogeneous resource landscape. We then performed two additional experiments to test whether C. campestris achieves greater resource acquisition by parasitising two host species rather than one and whether C. campestris forages in communities of hosts offering different rewards (a choice experiment). There was no evidence in either experiment for direct benefits of a mixed host diet. Cuscuta campestris foraged by parasitising the most rewarding hosts the fastest and then investing the most on them. We conclude that our data present strong evidence for foraging in the parasitic plant C. campestris. |
Identificador |
https://serval.unil.ch/notice/serval:BIB_C69E803F7172 https://serval.unil.ch/resource/serval:BIB_C69E803F7172.P001/REF http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_C69E803F71726 urn:nbn:ch:serval-BIB_C69E803F71726 http://my.unil.ch/serval/document/BIB_C69E803F7172.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_C69E803F71726 |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/openAccess Copying allowed only for non-profit organizations https://serval.unil.ch/disclaimer |
Fonte |
New Phytologist1621147-155 |
Palavras-Chave | #Parasitic plant ; Spermatophyta ; Angiospermae ; Dicotyledones ; Convolvulaceae ; Cuscuta campestris ; Growth ; Host plant ; Resource allocation ; Parasitism ; Plante parasite ; Spermatophyta ; Angiospermae ; Dicotyledones ; Convolvulaceae ; Cuscuta campestris ; Croissance ; Plante hôte ; Allocation ressource ; Parasitisme ; Planta parásita ; Spermatophyta ; Angiospermae ; Dicotyledones ; Convolvulaceae ; Cuscuta campestris ; Crecimiento ; Planta huesped ; Asignación recurso ; Parasitismo ; |
Tipo |
info:eu-repo/semantics/article article |
Formato |
application/pdf |