TY - JOUR
T1 - Dispersal strategy of cyst nematodes (Heterodera Arenaria) in the plant root zone of mobile dunes and consequences for emergence, survival and reproductive success
AU - Van der Stoel, C.D.
AU - Van der Putten, W.H.
N1 - Reporting year: 2006
Metis note: 3780; CTE; MTI ; TME ; TE file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs2006/VanderStoel_ea_3780.pdf
PY - 2006
Y1 - 2006
N2 - Root-feeding nematodes may play an important role in generating spatial and temporal variation in natural plant communities, but little is known about the performance of the nematodes in the plant root zone. We studied the emergence, survival and reproductive success of the cyst nematode Heterodera arenaria, a root feeding-specialist that occurs in mobile dunes. The host plants of H. arenaria are buried regularly by windblown sand to which the plants respond by upward clonal expansion. As a consequence, the nematodes have to migrate upwards in the soil profile to find new roots for feeding and reproduction, however, not all juveniles migrate. We tested the hypothesis that the offspring from migrated individuals would perform better than from individuals that remained behind and discuss the advantage of this dualistic behavior. The individual performance of the cyst nematodes was better when their juveniles migrated to the new root layer. In the field, in the new root layer the cysts had more eggs and juveniles than cysts collected from the 1-year-old root layer. Under controlled conditions, cysts from the new root layer released their first juveniles faster than cysts from the 1-year-old root layer. However, the juveniles that do not migrate might be crucial for the persistence of the population. In the past decade in [KEYWORDS: Ammophila arenaria ; Nematode dispersal ; Feeding-specialist ; Nematode life history]
AB - Root-feeding nematodes may play an important role in generating spatial and temporal variation in natural plant communities, but little is known about the performance of the nematodes in the plant root zone. We studied the emergence, survival and reproductive success of the cyst nematode Heterodera arenaria, a root feeding-specialist that occurs in mobile dunes. The host plants of H. arenaria are buried regularly by windblown sand to which the plants respond by upward clonal expansion. As a consequence, the nematodes have to migrate upwards in the soil profile to find new roots for feeding and reproduction, however, not all juveniles migrate. We tested the hypothesis that the offspring from migrated individuals would perform better than from individuals that remained behind and discuss the advantage of this dualistic behavior. The individual performance of the cyst nematodes was better when their juveniles migrated to the new root layer. In the field, in the new root layer the cysts had more eggs and juveniles than cysts collected from the 1-year-old root layer. Under controlled conditions, cysts from the new root layer released their first juveniles faster than cysts from the 1-year-old root layer. However, the juveniles that do not migrate might be crucial for the persistence of the population. In the past decade in [KEYWORDS: Ammophila arenaria ; Nematode dispersal ; Feeding-specialist ; Nematode life history]
U2 - 10.1016/j.apsoil.2006.02.007
DO - 10.1016/j.apsoil.2006.02.007
M3 - Article
SN - 0929-1393
VL - 34
SP - 176
EP - 183
JO - Applied Soil Ecology
JF - Applied Soil Ecology
IS - 2-3
ER -