Morphological characterization of pollens from three Apiaceae species and their ingestion by twelve-spotted lady beetle (Coleoptera: Coccinellidae).
Larvae and adults of certain species of predator lady beetles feed on pollen, guaranteeing their survival, and at times, reproduction in the absence of preferred prey. Palynology, therefore, may contribute in the investigation of botanical families visited by these predators in order to obtain this floral resource. There are records of the visitation of Apiaceae flowers by Coleomegilla maculata DeGeer, 1775 (Coleoptera, Coccinellidae), but not the ingestion of their pollen grains by this lady beetle. The external morphology of pollen grains of three Apiaceae aromatic species (Anethum graveolens L., Coriandrum sativum L., Foeniculum vulgare Mill.) was characterized, and it was evaluated the ingestion of these pollens by fourth instar larvae and adults of C. maculata upon confinement along with flowers of these Apiaceae for 24 and 48 hours. The pollen grains of those species presented similar external morphology. In the two times of exposure, the larvae ingested the same amount of pollen from the three Apiaceae species, and the amount of C. sativum pollen ingested was the same between larvae and adults. The amount of A. graveolens pollen grains ingested by the adults was significantly greater than the pollens of C. sativum and F. vulgare, in 24 hours, with the opposite occurring in 48 hours. In the first 24 hours, the adults ingested more A. graveolens pollen than the larvae, with the opposite occurring with F. vulgare. There was no significant difference in the amount of Apiaceae pollen ingested between larvae and adults in 48 hours. The results suggest that the pollen-eating habits of certain aphidophagous lady beetles may be crucial in their preservation within agro-ecosystems.
Programa de Pós-graduação em Fitossanidade e Biotecnologia Aplicada, Universidade Federal Rural do Rio de Janeiro, Universidade Federal Rural do Rio de Janeiro, Seropédica RJ , Brazil, Programa de Pós-graduação em Fitossanidade e Biotecnologia Aplicada, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Rodovia BR 465, Km 7, CEP 23897-000, Seropédica, RJ, Brazil.
V A
VA
D'Ávila
Departamento de Entomologia e Fitopatologia, Universidade Federal Rural do Rio de Janeiro, Universidade Federal Rural do Rio de Janeiro, Seropédica RJ , Brazil, Departamento de Entomologia e Fitopatologia, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Rodovia BR 465, Km 7, CEP 23897-000, Seropédica, RJ, Brazil.
E L
EL
Aguiar-Menezes
Departamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ , Brazil, Departamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro - UFRJ, Quinta da Boa Vista, São Cristóvão, CEP 20940-040, Rio de Janeiro, RJ, Brazil.
V
V
Gonçalves-Esteves
Departamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ , Brazil, Departamento de Botânica, Museu Nacional, Universidade Federal do Rio de Janeiro - UFRJ, Quinta da Boa Vista, São Cristóvão, CEP 20940-040, Rio de Janeiro, RJ, Brazil.
C B F
CB
Mendonça
Departamento de Matemática, Universidade Federal Rural do Rio de Janeiro, Universidade Federal Rural do Rio de Janeiro, Seropédica RJ , Brazil, Departamento de Matemática, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Rodovia BR 465, Km 7, CEP 23897-000, Seropédica, RJ, Brazil.
R N
RN
Pereira
Departamento de Entomologia e Fitopatologia, Universidade Federal Rural do Rio de Janeiro, Universidade Federal Rural do Rio de Janeiro, Seropédica RJ , Brazil, Departamento de Entomologia e Fitopatologia, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Rodovia BR 465, Km 7, CEP 23897-000, Seropédica, RJ, Brazil.
T M
TM
Santos
D000824:Animal Nutritional Physiological Phenomena / Q000502:physiology*; D000818:Animals; D019661:Apiaceae / Q000737:chemistry / Q000378:metabolism*; D001517:Coleoptera / Q000502:physiology*; D005247:Feeding Behavior / Q000502:physiology; D007814:Larva; D011058:Pollen / Q000737:chemistry / Q000378:metabolism*