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首页> 外文期刊>Journal of Economic Entomology >Developmental biology of an exotic scale, acutaspis albopicta (Hemiptera: Diaspididae)
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Developmental biology of an exotic scale, acutaspis albopicta (Hemiptera: Diaspididae)

机译：外来规模的发育生物学，白cut（Acutaspis albopicta）（半翅目：Dia科）

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摘要

Acutaspis albopicta (Cockerell) is one of seven exotic scale species detected on shipments of 'Hass' avocados entering California from Mexico. Here, we present the results of experiments to elucidate basic life history parameters of this species. The scale only reproduces sexually with unmated females producing no offspring. Unmated females survived up to 14 wk after settling on host fruits, whereas males survived for up to 62 h, with the majority dying within 46 h after emergence. Females laid a mean of 52.0 ± 2.8 eggs (range, 5-171 eggs). Lower humidity (50%) was detrimental to the survival of male scales compared with high humidity (75%), especially during the pupal stage. The optimal temperature for development of both sexes was 25°C. At this temperature, females developed from first instars to adults in ≈28 d, whereas males emerged from their pupal cases after ≈37 d. The adjusted lower developmental thresholds for females and males were 13.2 and 13.4°C, respectively. The upper developmental threshold for both females and males was ≈32°C. Total development from first instar to adult female was 329 degree days and to emerged male, 433 degree days.
机译：Acutaspis albopicta（Cockerell）是在从墨西哥进入加利福尼亚的“哈斯”鳄梨货运中发现的七个外来规模物种之一。在这里，我们介绍了阐明该物种基本生活史参数的实验结果。鳞片仅与未交配的雌性繁殖，没有后代。未交配的雌性在寄主果实上定居后可存活长达14周，而雄性则可存活长达62小时，其中大多数在出苗后46小时内死亡。雌性产下平均52.0±2.8卵（范围5-171卵）。与高湿度（75％）相比，较低的湿度（50％）不利于男性鳞片的存活，尤其是在the期。两性发育的最佳温度为25°C。在此温度下，雌性从大约28 d的幼虫发育到成年，而雄性大约在37 d后从p的情况下出现。调整后的雌性和雄性发育下限分别为13.2和13.4°C。雌性和雄性的最高发育阈值均约为32°C。从初龄到成年雌虫的总发育为329度日，到成年男性为433度日。

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