干旱区生态环境知识资源中心(Arid): Effects of Age, Phase Variation and Pheromones on Male Sperm Storage in the Desert Locust, Schistocerca gregaria

Arid

DOI	10.3390/insects12070642
	Effects of Age, Phase Variation and Pheromones on Male Sperm Storage in the Desert Locust, Schistocerca gregaria
	Hiroyoshi, Satoshi; Mitsunaga, Takayuki; Ganaha-Kikumura, Tomoko; Reddy, Gadi V. P.
通讯作者	Hiroyoshi, S (corresponding author), Int Ctr Insect Physiol & Ecol ICIPE, Dept Chem Ecol, POB 30772-00100, Nairobi, Kenya.
来源期刊	INSECTS
EISSN	2075-4450
出版年	2021
卷号	12 期号:7
英文摘要	Simple Summary We investigated male sperm storage in the desert locust Schistocerca gregaria. Phase (solitary or gregarious) did not affect sperm distribution in the vas deferens and seminal vesicle, whereas sperm accumulation of the seminal vesicle in gregarious locusts was promoted more than in solitary ones. Pheromones received from neither mature adults nor nymphs affected sperm distribution in the vas deferens and seminal vesicle. However, sperm accumulation in the seminal vesicle was more promoted in the gregarious locusts which received pheromones from mature adults than those obtained from nymphs at early adult stage, especially seven days after adult emergence. In general, sperm produced in the testis are moved into the seminal vesicle via the vas deferens in insects, where they are stored. How this sperm movement is controlled is less well understood in locusts or grasshoppers. In this study, the effects of age, phase variation and pheromones on male sperm storage were investigated in the desert locust, Schistocerca gregaria (Forskal). In this locust, a pair of ducts, the vasa deferentia, connect the testes to a pair of the long, slender seminal vesicles that are folded approximately thirty times, and where the sperm are stored. We found that phase variation affected the level of sperm storage in the seminal vesicle. Moreover, adult males that detected pheromones emitted by mature adult males showed enhanced sperm storage compared with males that received the pheromones emitted from nymphs: The former, adult male pheromones are known to promote sexual maturation of immature adults of both sexes, whereas the latter, nymphal pheromones delay sexual maturation. Most mature adult males had much sperm in the vasa deferentia at all times examined, suggesting daily sperm movement from the testes to the seminal vesicles via the vasa deferentia. As adult males aged, sperm were accumulated from the proximal part to the distal end of the seminal vesicle. Many sperm remained in the seminal vesicle after mating. These results suggest that young or new sperm located near the proximal part of the seminal vesicle could be used for mating, whereas old sperm not used for mating are stored in the distal part of the seminal vesicle.
英文关键词	reproduction seminal vesicle sperm testis vas deferens
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000676737500001
WOS关键词	ACCESSORY REPRODUCTIVE GLANDS ; MALE MIGRATORY GRASSHOPPER ; SANGUINIPES FABR ORTHOPTERA ; MELANOPLUS-SANGUINIPES ; SEXUAL-MATURATION ; HORMONAL-CONTROL ; SECRETORY ACTIVITY ; CORPORA ALLATA ; BEHAVIOR ; POLYPHENISM
WOS类目	Entomology
WOS研究方向	Entomology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363592
作者单位	[Hiroyoshi, Satoshi] Int Ctr Insect Physiol & Ecol ICIPE, Dept Chem Ecol, POB 30772-00100, Nairobi, Kenya; [Mitsunaga, Takayuki] Natl Agr & Food Res Org, Inst Plant Protect, 2-1-18 Kannondai, Tsukuba 3058602, Japan; [Ganaha-Kikumura, Tomoko] Okinawa Prefectural Cent Wholesale Market, Naha, Okinawa 9012128, Japan; [Reddy, Gadi V. P.] USDA ARS, Southern Insect Management Res Unit, 141 Expt Stn Rd,POB 346, Stoneville, MS 38776 USA
推荐引用方式 GB/T 7714	Hiroyoshi, Satoshi,Mitsunaga, Takayuki,Ganaha-Kikumura, Tomoko,et al. Effects of Age, Phase Variation and Pheromones on Male Sperm Storage in the Desert Locust, Schistocerca gregaria[J],2021,12(7).
APA	Hiroyoshi, Satoshi,Mitsunaga, Takayuki,Ganaha-Kikumura, Tomoko,&Reddy, Gadi V. P..(2021).Effects of Age, Phase Variation and Pheromones on Male Sperm Storage in the Desert Locust, Schistocerca gregaria.INSECTS,12(7).
MLA	Hiroyoshi, Satoshi,et al."Effects of Age, Phase Variation and Pheromones on Male Sperm Storage in the Desert Locust, Schistocerca gregaria".INSECTS 12.7(2021).