English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/133455
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Waterfowl endozoochory: an overlooked long-distance dispersal mode for Cuscuta (dodder, Convolvulaceae)

AutorCostea, Mihai; Stefanović, Saša; García, Miguel A.; Cruz, Susan de la; Casazza, Michael L.; Green, Andy J.
Palabras claveAnas acuta
Long-distance dispersal
ITS
Morphology
Northern pintail
Parasitic plants
Seeds
rnL-F
Fecha de publicación2016
EditorBotanical Society of America
CitaciónAmerican Journal of Botany, 103(5): 957-062 (2016)
ResumenPREMISE OF THE STUDY: Dispersal of parasitic Cuscuta species (dodders) worldwide has been assumed to be largely anthropomorphic because their seeds do not match any previously known dispersal syndrome and no natural dispersal vectors have been reliably documented. However, the genus has a subcosmopolitan distribution and recent phylogeographic results have indicated that at least18 historical cases of long-distance dispersal (LDD) have occurred during its evolution. The objective of this study is to report the first LDD biological vector for Cuscuta seeds. METHODS: Twelve northern pintails (Anas acuta) were collected from Suisun Marsh, California and the contents of their lowest part of the large intestine (rectum) were extracted and analyzed. Seed identification was done both morphologically and using a molecular approach. Extracted seeds were tested for germination and compared to seeds not subjected to gut passage to determine the extent of structural changes caused to the seed coat by passing through the digestive tract. KEY RESULTS: Four hundred and twenty dodder seeds were found in the rectum of four northern pintails. From these, 411 seeds were identified as Cuscuta campestris and nine as most likely C. pacifica. The germination rate of C. campestris seeds after gut passage was 55%. Structural changes caused by the gut passage in both species were similar to those caused by an acid scarification. CONCLUSIONS: Endozoochory by waterbirds may explain the historical LDD cases in the evolution of Cuscuta. This also suggests that current border quarantine measures may be insufficient to stopping spreading of dodder pests along migratory flyways
Versión del editorhttp://dx.doi.org/10.3732/ajb.1500507
URIhttp://hdl.handle.net/10261/133455
DOI10.3732/ajb.1500507
Aparece en las colecciones: (EBD) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Cuscuta seed dispersal by waterfowlAJB_DigitalCSIC.pdf783,53 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.