卵密度对猫跳蚤(Ctenocephalides felis)幼虫发育和成虫体型的影响。

IF 1.6 3区 农林科学 Q2 ENTOMOLOGY Medical and Veterinary Entomology Pub Date : 2024-06-14 DOI:10.1111/mve.12735
Piper N. Zellner, Lisa D. Brown
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引用次数: 0

摘要

跳蚤(虹吸目)是一种全代谢昆虫,其幼虫和成虫阶段的生态环境大相径庭。跳蚤成虫是寄生虫,专门吸食脊椎动物宿主的血液,而跳蚤幼虫则不寄生在宿主身上,而是吸食成蚤的干粪血。由于跳蚤幼虫以成蚤粪便为食,排泄物和卵必须落在同一地点;因此,在这些受限的栖息地,幼虫密度可能很高。然而,幼虫密度对后续成虫阶段的影响尚未得到研究。在本研究中,我们利用卵的密度来研究密度对猫跳蚤(Ctenocephalides felis Bouché)(虹彩科:Pulicidae)幼虫发育和成虫体型的影响。具体来说,收集卵以产生三种不同的幼虫密度(n = 50、100 和 150 颗/56.7 平方厘米),并给各组孵出的幼虫喂食过量的成虫粪粒。通过记录发育到蛹期的卵的比例和发育到成虫(羽化)的卵的比例来测量幼虫的发育情况。雌雄成虫的体型是通过头长和体长来量化的。我们发现,卵的数量对幼虫化蛹的比例和幼虫羽化的比例没有影响;但是,卵的密度越高,雌雄幼虫的体型越大。总之,这些数据有助于我们深入了解幼虫跳蚤的生态如何影响成虫的生物学特性。
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Influence of egg density on larval development and adult body size of cat fleas (Ctenocephalides felis)

Fleas (Siphonaptera) are holometabolous insects with larval and adult stages that exhibit vastly different ecologies from each other. Adult fleas are parasitic and feed exclusively on the blood of a vertebrate host, whereas flea larvae do not live on hosts and consume dried faecal blood from adult fleas. Because flea larvae rely on adult flea faeces for food, excrement and eggs must fall in the same location; thus, larval density is likely high in these restricted habitats. However, the influence of larval density on the subsequent adult stage has not been examined. In the present study, we utilized egg density to investigate density-dependent effects on larval development and adult body size in the cat flea (Ctenocephalides felis Bouché) (Siphonaptera: Pulicidae). Specifically, eggs were collected to create three different larval densities (n = 50, 100 and 150 per 56.7 cm2), and hatched larvae from all groups were fed an excess amount of adult faecal pellets. Larval development was measured by recording the proportion of eggs that developed to the pupal stage and the proportion of eggs that reached adulthood (eclosion). The body size of eclosed adults was quantified for both sexes using head length and length of the total body. We found that the number of eggs had no effect on the proportion of larvae that pupated or the proportion of larvae that eclosed; however, higher egg densities resulted in larger body sizes for both sexes. Overall, these data yield significant insight into how the ecology of larval fleas impacts the biology of the resultant adults.

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来源期刊
Medical and Veterinary Entomology
Medical and Veterinary Entomology 农林科学-昆虫学
CiteScore
3.70
自引率
5.30%
发文量
65
审稿时长
12-24 weeks
期刊介绍: Medical and Veterinary Entomology is the leading periodical in its field. The Journal covers the biology and control of insects, ticks, mites and other arthropods of medical and veterinary importance. The main strengths of the Journal lie in the fields of: -epidemiology and transmission of vector-borne pathogens changes in vector distribution that have impact on the pathogen transmission- arthropod behaviour and ecology- novel, field evaluated, approaches to biological and chemical control methods- host arthropod interactions. Please note that we do not consider submissions in forensic entomology.
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