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Multiple blood feeding (MBF) in a gonotrophic cycle in vector mosquitoes influences pathogen transmission by increasing host-vector contact. Multiple blood meals can be caused by malnutrition in the larval stage, a harsh environment in the adult stage, or interrupted feeding due to host defense. We focused on the effect of body size on MBF in two vector mosquitoes, Aedes aegypti (L.) and Aedes albopictus (Skuse), in the laboratory, using small and large adults of both species. Most females (94.3% of Ae. aegypti and 88.2% of Ae. albopictus) oviposited with the first blood meal. There was no relationship between body size and MBF proportion in either species. However, there was a negative relationship between body size and egg retention ratio in Ae. albopictus ovaries and between body size and the ratio of immature follicles in both species. Small Ae. albopictus laid some eggs but retained the rest in their ovaries, as did 5.3% of Ae. aegypti. Large Ae. albopictus developed 68.4–81.7% of follicles, whereas, small ones developed about 50%. Large Ae. aegypti developed 98.0–99.8% of follicles, whereas small females developed only 83.5–88.4%. These results suggest that oviposition was incomplete in small females with low energy reserves, and that females emerging under subpar-diet conditions may perform MBF to improve fecundity. 一回の産卵のために複数回の吸血を行う場合を多回吸血と呼ぶ多回吸血が起こる原因は幼虫時代の貧栄養羽化後の過酷な環境吸血を中断させられた場合などがある我々は幼虫時代の栄養条件を反映した成虫の体サイズが多回吸血に与える影響をネッタイシマカとヒトスジシマカの2種で検討したその結果多回吸血と体サイズに関係は認められずネッタイシマカは94.3% がヒトスジシマカでは 88.2% が1回の吸血で産卵した一方ヒトスジシマカでは小さい個体ほど一部の成熟卵を産卵せずに体内に保持する傾向が見られたまた両種とも幼虫期に貧栄養下で生育した成虫は吸血後に成熟しない卵巣小管の割合が高くなる傾向がみられたこれらの結果は成熟卵を保有している個体であっても産卵数をより増加させるために多回吸血を行う可能性があることを示している

Effect of body size on multiple blood feeding and egg retention of Aedes aegypti (L.) and Aedes albopictus (Skuse) (Diptera: Culicidae)