The first record larvae of the genus Peltogaster (Rhizocephala: Peltogastridae) with eyes and unilobed male aesthetasc

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2024-01-01 DOI:10.1016/j.asd.2023.101327
Darya D. Golubinskaya, Olga M. Korn
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Abstract

The complete larval development of Peltogaster lineata Shiino, 1943 (Rhizocephala: Peltogastridae), including five nauplii and one cypris stage, is described and illustrated using SEM. The development took 3.5–4 days at a water temperature of 22–23 °C. Peltogaster lineata has the peltogastrid type of development. Nauplii possess a large and clearly reticulated flotation collar, six pairs of dorsal shield setae with the U-shaped second pair, long segmented frontolateral horns each with two subterminal setae, and a long seta at the antennal basis. The attachment disc in female cyprids has a flap-like extension at the posterior margin. Cyprids of both sexes possess two sensory setae at the attachment disc. The large male aesthetasc is unilobed, the female subterminal aesthetasc terminates into two thin long filamentous processes. Larvae of P. lineata have distinctly visible nauplius eyes.

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首次记录到有眼睛和单叶雄性睾丸的盾尾虫属(Rhizocephala: Peltogastridae)幼虫
利用扫描电子显微镜描述并说明了Peltogaster lineata Shiino, 1943(Rhizocephala: Peltogastridae)的完整幼虫发育过程,包括五个稚虫期和一个幼体期。在 22-23 ℃ 的水温条件下,发育历时 3.5-4 天。Peltogaster lineata具有盾皮鱼的发育类型。Nauplii具有一个大而清晰的网状浮圈、六对背盾刚毛(第二对呈U形)、长节前侧角(每个角有两个近端刚毛)以及触角基部的一个长刚毛。雌性鲤鱼的附着盘后缘有一瓣状延伸。雌雄鲤鱼的附着盘上都有两根感觉刚毛。雄性的大触角呈单叶状,雌性的近端触角末端有两个细长的丝状突起。P. lineata 的幼体有明显可见的稚鱼眼。
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来源期刊
CiteScore
3.50
自引率
10.00%
发文量
54
审稿时长
60 days
期刊介绍: Arthropod Structure & Development is a Journal of Arthropod Structural Biology, Development, and Functional Morphology; it considers manuscripts that deal with micro- and neuroanatomy, development, biomechanics, organogenesis in particular under comparative and evolutionary aspects but not merely taxonomic papers. The aim of the journal is to publish papers in the areas of functional and comparative anatomy and development, with an emphasis on the role of cellular organization in organ function. The journal will also publish papers on organogenisis, embryonic and postembryonic development, and organ or tissue regeneration and repair. Manuscripts dealing with comparative and evolutionary aspects of microanatomy and development are encouraged.
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