Nom du corpus

Corpus Systématique Animale

Titre du document

Roles of nectar robbers in reproduction of the tropical treelet Quassia amara (Simaroubaceae)

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Oiseaux_v2b_01772
Auteur(s)
  • David W. Roubik 1
  • N. Michele Holbrook 1
  • German V. Parra 1
Affiliation(s)
  • 1) Smithsonian Tropical Research Institute, APDO 2072, Balboa, Panamá
Résumé

Different subsets of mainland nectarivores visited Quassia amara (Simaroubaceae), a self-compatible, predominately bird-pollinated treelet, at three islands and the mainland in Panamá. Factors correlated with reproductive success, defined as seed to ovule ratio, included the species pollinating and robbing flowers, visitor activity, pollinator response to nectar robbing, and internal regulation of fruit production. The absence of robbers and former pollinators on an island separated from the mainland during the holocene was associated with shifts in flower size, nectar production, and 3–4fold increases in population reproductive success and pollinator efficiency (=seeds produced per visit). Exclusion of robbers at three sites resulted in seed production 4–12 times greater than control flowers, at which robbers accounted for 52–98% of all visits. Although 36% of buds and over 83% of all flowers were robbed, this had no direct influence on the recorded 36–61% respective abortion rates of buds and flowers. Opportunistic avian robbers appeared where normal robbers were absent; three avian robbers extensively used floral perforations made by Trigona bees, and all ancillary pollinators also robbed. Selection pressures from nectar robbers are discussed that may relate to plant reproductive fitness.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX
B335BD87FFE66290930A97F36971ED247A78FE5B
Revue

Oecologia

Année de publication
1985
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.244
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-9N2NGPMP-L
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