Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, <i>Cylas formicarius</i> (F<sub>ABRICIUS</sub>) (Coleoptera: Curculionidae)

Satoshi Hiroyoshi; Gadi V. P. Reddy; Tsuguo Kohama

doi:doi:10.11648/j.ajls.20170504.12

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Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (F_ABRICIUS) (Coleoptera: Curculionidae)

Satoshi Hiroyoshi, Gadi V. P. Reddy, Tsuguo Kohama

Published in American Journal of Life Sciences (Volume 5, Issue 4)

Received: 6 June 2017 Accepted: 21 June 2017 Published: 18 July 2017

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Abstract

The sweetpotato weevil, Cylas formicarius, stores free sperm in both the testes and the seminal vesicle, even though the primary function of the testes is sperm production. Here, it was investigated sperm storage in the testes in relation to mating frequency. In particular, it was examined the effect of the positional relationship between the testes and seminal vesicle, on sperm storage by counting the number of sperm in those organs. After mating, not only were the number of free sperm in the seminal vesicle reduced, but also was the number in the testes, suggesting that free sperm stored in the testes moved into the seminal vesicle during or immediately after mating. Since this weevil seems to not regulate the number of sperm in the seminal vesicle for ejaculation, the sperm supply system of the testes may contribute ejaculate to support consecutive, multiple matings by this weevil.

Published in	American Journal of Life Sciences (Volume 5, Issue 4)
DOI	10.11648/j.ajls.20170504.12
Page(s)	103-107
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Insemination, Ipomoea batatas, Reproduction, Spermatogenesis, Sperm Supply System, Sweet Potato

References

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[2]	Teruya T, Nishida K, Tao M, Kuba H, 1985. Cytological identification of testes from native and irradiated melon flies, Dacus cucurbitae COQUILLET (Diptera: Tephritidae). Okinawa Nogyo 20, 31-37 (in Japanese with English summary).
[3]	Sakuratani Y, Sugimoto T, Setokuchi O, Kamikado T, Kiritani K, Okada T, 1994. Diurnal changes in micro-habitat usage and behavior of Cylas fromicarius (FABRICIUS) (Coleoptera: Curculionidae) adults. Appl Entomol Zool 29, 307-315.
[4]	Hiroyoshi S, Kohama T, Reddy, GV P, 2016. Age-related sperm production, transfer, and storage in the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Curculionidae). J Insect Behav 29, 1-19.
[5]	Kohama T, 1990. Invasion and colonization of the sweetpotato weevils in Okinawa and current problems for their control. Shokubutsu-boeki 44, 115-117 (In Japanese).
[6]	Yasuda K, 1995. Mass trapping of the sweet potato weevil Cylas formicarius (FARBICIUS)(Coleoptera: Brentidae) with a synthetic sex pheromone. Appl Entomol Zool 30, 31-36.
[7]	Moriya S, 1997. Is it possible to eradicate the two weevil pests of sweet potato, Cyalas formicarius and Euscepes postfasciatus from Japan? Bull. Okinawa Agric Exp Sta, 18, 19-27.
[8]	Moriya S, Miyatake T, 2001. Eradication programs of two sweetpotato pests, Cylas formicarius and Euscepes postfasciatus, in Japan with special reference to their dispersal ability. JARQ 35, 227-234.
[9]	Sugimoto T, Sakuratani Y, Fukui H, Kiritani K, Okada T, 1996. Estimating the reproductive properties of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera, Brentidae). Appl. Entomol Zool 31, 357-367.
[10]	Yamagishi M, TsubakiY, 1990. Copulation duration and sperm transfer in the melon fly, Dacus cucurbitae COQUILLETT (Diptera: Tepharitidae). Appl Entomol Zool 25, 517-519.
[11]	Tsubaki Y, Yamagishi M, 1991. “Longevity” of sperm within the female of the melon fly, Dacus cucurbitae (Diptera: Tephritidae), and its relevance to sperm competition. J Insect Behav 4, 243-250.
[12]	Tsai-Morris C-H, Sheng Y, Lee E, Lei K-J. Dufau ML, 2004. Gonadotropin-regulated testicular RNA helicase (GRTH/Ddx25) is essential for spermatid development and completion of spermatogenesis. Proc Natl Acad Sci USA 101, 6373-6378.
[13]	Simmons LW, Emlen DJ, 2006. Evolutionary trade-off between weapons and testes. Proc Natl Acad Sci USA 103, 16346-16351.
[14]	Abdallah AM, Zhou X., Kim C., Shah KK, Hogden C, Schoenherr JA, Clemens JC, Chang HC. 2013. Activated Cdc42 kinase regulates dock localization in male germ cells during Drosophilla spermatogenesis. Develop Biol 378, 141-153.
[15]	Pereira LLV, Alevi KCC, Castanhole MMU, Moreira FFF, Barbosa JF, Itoyama MM, 2015. Cytogenetics analysis and testis morphology of aquatic species of the families Belostomatidae, Gelastcoridae, Gerridae, Notonectidae, and Veliidae (Heteroptera). J Insect Sci 15, 21-28.
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[17]	Hiroyoshi S, 1995. Regulation of sperm quantity transferring to females at mating in the adult male of Polygonia c-aureum (Lepidoptera: Nymphalidae). Appl Entomol Zool 30, 111-119.

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Satoshi Hiroyoshi, Gadi V. P. Reddy, Tsuguo Kohama. (2017). Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae). American Journal of Life Sciences, 5(4), 103-107. https://doi.org/10.11648/j.ajls.20170504.12

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Satoshi Hiroyoshi; Gadi V. P. Reddy; Tsuguo Kohama. Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae). Am. J. Life Sci. 2017, 5(4), 103-107. doi: 10.11648/j.ajls.20170504.12

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AMA Style

Satoshi Hiroyoshi, Gadi V. P. Reddy, Tsuguo Kohama. Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae). Am J Life Sci. 2017;5(4):103-107. doi: 10.11648/j.ajls.20170504.12

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@article{10.11648/j.ajls.20170504.12,
  author = {Satoshi Hiroyoshi and Gadi V. P. Reddy and Tsuguo Kohama},
  title = {Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae)},
  journal = {American Journal of Life Sciences},
  volume = {5},
  number = {4},
  pages = {103-107},
  doi = {10.11648/j.ajls.20170504.12},
  url = {https://doi.org/10.11648/j.ajls.20170504.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajls.20170504.12},
  abstract = {The sweetpotato weevil, Cylas formicarius, stores free sperm in both the testes and the seminal vesicle, even though the primary function of the testes is sperm production. Here, it was investigated sperm storage in the testes in relation to mating frequency. In particular, it was examined the effect of the positional relationship between the testes and seminal vesicle, on sperm storage by counting the number of sperm in those organs. After mating, not only were the number of free sperm in the seminal vesicle reduced, but also was the number in the testes, suggesting that free sperm stored in the testes moved into the seminal vesicle during or immediately after mating. Since this weevil seems to not regulate the number of sperm in the seminal vesicle for ejaculation, the sperm supply system of the testes may contribute ejaculate to support consecutive, multiple matings by this weevil.},
 year = {2017}
}

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TY  - JOUR
T1  - Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae)
AU  - Satoshi Hiroyoshi
AU  - Gadi V. P. Reddy
AU  - Tsuguo Kohama
Y1  - 2017/07/18
PY  - 2017
N1  - https://doi.org/10.11648/j.ajls.20170504.12
DO  - 10.11648/j.ajls.20170504.12
T2  - American Journal of Life Sciences
JF  - American Journal of Life Sciences
JO  - American Journal of Life Sciences
SP  - 103
EP  - 107
PB  - Science Publishing Group
SN  - 2328-5737
UR  - https://doi.org/10.11648/j.ajls.20170504.12
AB  - The sweetpotato weevil, Cylas formicarius, stores free sperm in both the testes and the seminal vesicle, even though the primary function of the testes is sperm production. Here, it was investigated sperm storage in the testes in relation to mating frequency. In particular, it was examined the effect of the positional relationship between the testes and seminal vesicle, on sperm storage by counting the number of sperm in those organs. After mating, not only were the number of free sperm in the seminal vesicle reduced, but also was the number in the testes, suggesting that free sperm stored in the testes moved into the seminal vesicle during or immediately after mating. Since this weevil seems to not regulate the number of sperm in the seminal vesicle for ejaculation, the sperm supply system of the testes may contribute ejaculate to support consecutive, multiple matings by this weevil.
VL  - 5
IS  - 4
ER  -

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Author Information

Satoshi Hiroyoshi

Okinawa Prefectural Fruit-fly Eradication Program Office (Currently Okinawa Prefectural Plant Protection Center), Okinawa, Japan
Gadi V. P. Reddy

Montana State University, Western Triangle Agrcultural Research Center, Conrad, USA
Tsuguo Kohama

Okinawa Prefectural Fruit-fly Eradication Program Office (Currently Okinawa Prefectural Plant Protection Center), Okinawa, Japan

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Plain Text BibTeX RIS

APA Style

Satoshi Hiroyoshi, Gadi V. P. Reddy, Tsuguo Kohama. (2017). Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae). American Journal of Life Sciences, 5(4), 103-107. https://doi.org/10.11648/j.ajls.20170504.12

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ACS Style

Satoshi Hiroyoshi; Gadi V. P. Reddy; Tsuguo Kohama. Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae). Am. J. Life Sci. 2017, 5(4), 103-107. doi: 10.11648/j.ajls.20170504.12

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AMA Style

Satoshi Hiroyoshi, Gadi V. P. Reddy, Tsuguo Kohama. Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae). Am J Life Sci. 2017;5(4):103-107. doi: 10.11648/j.ajls.20170504.12

Copy | Download

@article{10.11648/j.ajls.20170504.12,
  author = {Satoshi Hiroyoshi and Gadi V. P. Reddy and Tsuguo Kohama},
  title = {Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae)},
  journal = {American Journal of Life Sciences},
  volume = {5},
  number = {4},
  pages = {103-107},
  doi = {10.11648/j.ajls.20170504.12},
  url = {https://doi.org/10.11648/j.ajls.20170504.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajls.20170504.12},
  abstract = {The sweetpotato weevil, Cylas formicarius, stores free sperm in both the testes and the seminal vesicle, even though the primary function of the testes is sperm production. Here, it was investigated sperm storage in the testes in relation to mating frequency. In particular, it was examined the effect of the positional relationship between the testes and seminal vesicle, on sperm storage by counting the number of sperm in those organs. After mating, not only were the number of free sperm in the seminal vesicle reduced, but also was the number in the testes, suggesting that free sperm stored in the testes moved into the seminal vesicle during or immediately after mating. Since this weevil seems to not regulate the number of sperm in the seminal vesicle for ejaculation, the sperm supply system of the testes may contribute ejaculate to support consecutive, multiple matings by this weevil.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Sperm Supply from the Testes to the Seminal Vesicle over Consecutive Matings in the Sweetpotato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae)
AU  - Satoshi Hiroyoshi
AU  - Gadi V. P. Reddy
AU  - Tsuguo Kohama
Y1  - 2017/07/18
PY  - 2017
N1  - https://doi.org/10.11648/j.ajls.20170504.12
DO  - 10.11648/j.ajls.20170504.12
T2  - American Journal of Life Sciences
JF  - American Journal of Life Sciences
JO  - American Journal of Life Sciences
SP  - 103
EP  - 107
PB  - Science Publishing Group
SN  - 2328-5737
UR  - https://doi.org/10.11648/j.ajls.20170504.12
AB  - The sweetpotato weevil, Cylas formicarius, stores free sperm in both the testes and the seminal vesicle, even though the primary function of the testes is sperm production. Here, it was investigated sperm storage in the testes in relation to mating frequency. In particular, it was examined the effect of the positional relationship between the testes and seminal vesicle, on sperm storage by counting the number of sperm in those organs. After mating, not only were the number of free sperm in the seminal vesicle reduced, but also was the number in the testes, suggesting that free sperm stored in the testes moved into the seminal vesicle during or immediately after mating. Since this weevil seems to not regulate the number of sperm in the seminal vesicle for ejaculation, the sperm supply system of the testes may contribute ejaculate to support consecutive, multiple matings by this weevil.
VL  - 5
IS  - 4
ER  -

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