title: Asymmetric Mating Interference between Two Related Mosquito Species: Aedes (Stegomyia) albopictus and Aedes (Stegomyia) cretinus.
abstract: Aedes (Stegomyia) albopictus (Skuse) and Aedes (Stegomyia) cretinus Edwards are closely related mosquito species with common morphological features and bio-ecological similarities. Recent mosquito surveillance in Athens, Greece, showed that they are sympatric mosquito species, with Ae. albopictus [corrected] developing quite higher population densities than Ae. cretinus [corrected] . The potential of mating interference between these species was investigated by reciprocal and homologous mating experiments in cages under laboratory conditions. In non-choice interspecific crosses (groups of males and females) females of both species produced sterile eggs. Insemination rate was 58% for Ae. cretinus females and only 1% for Ae. albopictus [corrected] females. Aedes albopictus males were sexually aggressive and inseminated Ae. cretinus females (31%) in choice experiments, where males of one species had access to mate with females of both species. Whereas, interspecific mating of Ae. albopictus [corrected] females with Ae. cretinus males in the co-occurrence of Ae. cretinus females was weaker (4%). Aedes cretinus females from non-choice crossing with Ae. albopictus [corrected] or Ae. cretinus males were paired individually with conspecific males. The percentage of fertile Ae. cretinus females was 17.5% when had encaged before with Ae. albopictus [corrected] males, compared to 100% when Ae. cretinus [corrected] females were encaged with conspecific males only. Probable ecological consequences of asymmetric mating between these ecologically homologous species in nature are discussed.
authors.affiliation: Laboratory of Biological Control of Pesticides, Department of Pesticides Control & Phytopharmacy, Benaki Phytopathological Institute, Kifissia, Athens, Greece; Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, Athens, Greece.
authors.forename: Athanassios
authors.initials: A
authors.lastname: Giatropoulos
authors.affiliation: Laboratory of Agricultural Entomology, Department of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, Kifissia, Athens, Greece.
authors.forename: Dimitrios P
authors.initials: DP
authors.lastname: Papachristos
authors.affiliation: Laboratory of Biological Control of Pesticides, Department of Pesticides Control & Phytopharmacy, Benaki Phytopathological Institute, Kifissia, Athens, Greece.
authors.forename: George
authors.initials: G
authors.lastname: Koliopoulos
authors.affiliation: Laboratory of Agricultural Entomology, Department of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, Kifissia, Athens, Greece.
authors.forename: Antonios
authors.initials: A
authors.lastname: Michaelakis
authors.affiliation: Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, Athens, Greece.
authors.forename: Nickolaos
authors.initials: N
authors.lastname: Emmanouel
mesh_terms: D000330:Aedes / Q000502:physiology*; D000818:Animals; D005260:Female; D007314:Insemination / Q000502:physiology*; D008297:Male; D010058:Oviposition / Q000502:physiology; D012098:Reproduction / Q000502:physiology*; D013045:Species Specificity