Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
The adaptiveness of wing-dimorphism in the salt marsh-inhabiting planthopper, Prokelisia marginata (Homoptera: Delphacidae)
Denno, R.F.; Grissell, E.E. (1979). The adaptiveness of wing-dimorphism in the salt marsh-inhabiting planthopper, Prokelisia marginata (Homoptera: Delphacidae). Ecology 60(1): 221-236. dx.doi.org/10.2307/1936482
In: Ecology. Ecological Society of America: Brooklyn, NY. ISSN 0012-9658; e-ISSN 1939-9170
|  |
| Trefwoorden |
A, Atlantic
Animal appendages > Locomotory appendages > Wings
Dimorphism
USA, Gulf Coast
Water bodies > Inland waters > Wetlands > Marshes > Salt marshes
Insecta [WoRMS]; Prokelisia marginata (Van Duzee, 1897) [WoRMS]; Spartina alterniflora Loisel. [WoRMS]
Atlantic Ocean [Marine Regions]; Gulf Coast of the United States [Marine Regions]
Marien/Kust |
| Auteurs | | Top |
- Denno, R.F.
- Grissell, E.E.
|
|
|
| Abstract |
Populations of the multivoltine planthopper, Prokelisia marginata (Delphacidae), contain two wing-forms, flightless short-winged brachypters and macropters with fully developed wings capable of flight. P. marginata feeds selectively on the grass, Spartina alterniflora, which dominates the vegetation of Atlantic and Gulf Coast tidal salt marshes. We demonstrate that along most of the Atlantic seaboard S. alterniflora occurs as a harlequin environment composed of stable patches that provide life history requisites year-round and unstable ones that disappear altogether during winter. The proportion of macropters in planthopper population is significantly correlated with the proportion of unstable patches in the local environment. A dimorphism is maintained along most of the Atlantic Coast because brachypters remain and effectively exploit stable patches and macropters colonize and subsequently escape unstable habitats. Along the Gulf Coast S. alterniflora occurs as one rather stable habitat, and here planthopper populations are composed mostly of brachypters. The percentage of macropters in populations is positively correlated with levels of crowding incurred during the nymphal stage, suggesting that wing-form is determined by a developmental switching mechanism triggered by various environmental cues that predict habitat deterioration. The relationship between crowding and macroptery is linear at Atlantic and Gulf Coast localities, but greater proportions of macropters are produced on Atlantic marshes under similarly crowded conditions. As a mechanism to explain differences in the wing-morph composition of populations, we propose that selection has altered the threshold at which a developmental switch responds to environmental cues such as crowding. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
