Ghrelin and food acquisition in wild and cultured Japanese eel (Anguilla japonica)

Takashi Yada; Michihisa Abe; Kenzo Kaifu; Kazuki Yokouchi; Nobuto Fukuda; Sakie Kodama; Hiroshi Hakoyama; Maho Ogoshi; Hiroyuki Kaiya; Tatsuya Sakamoto; Shunsuke Moriyama; Katsumi Tsukamoto

doi:10.1016/j.cbpa.2020.110700

Ghrelin and food acquisition in wild and cultured Japanese eel (Anguilla japonica)

Takashi Yada, Michihisa Abe, Kenzo Kaifu, Kazuki Yokouchi, Nobuto Fukuda, Sakie Kodama, Hiroshi Hakoyama, Maho Ogoshi, Hiroyuki Kaiya, Tatsuya Sakamoto, Shunsuke Moriyama, Katsumi Tsukamoto

School of Science

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

To clarify the relationships between growth, endocrine status and habitat characteristics in Japanese eel (Anguilla japonica), plasma and stomach mRNA levels of ghrelin were examined in wild eels captured in the river and the bay, and in cultured eels during and after experimental fasting. Wild juvenile eels captured in freshwater habitats within the river showed significantly higher plasma and stomach mRNA levels of ghrelin than did fish obtained from brackish-water habitats within the bay. In cultured eels experimentally fasted for 4 weeks, plasma and stomach mRNA levels of ghrelin increased. After refeeding, the both parameters returned to the levels observed in continuously feeding control fish. In pigmented elvers, 2 months of feed restriction resulted in a significant increase in whole-body ghrelin mRNA. It is suggested that interaction between ghrelin and feeding is related to their habitats through differential food acquisition in fresh and brackish water environments.

Original language	English
Article number	110700
Journal	Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology
Volume	245
DOIs	https://doi.org/10.1016/j.cbpa.2020.110700
Publication status	Published - Jul 2020

Keywords

Cortisol
Food acquisition
Ghrelin
Growth hormone
Insulin-like growth factor
Japanese eel

ASJC Scopus subject areas

Biochemistry
Physiology
Molecular Biology

Access to Document

10.1016/j.cbpa.2020.110700

Cite this

Yada, T., Abe, M., Kaifu, K., Yokouchi, K., Fukuda, N., Kodama, S., Hakoyama, H., Ogoshi, M., Kaiya, H., Sakamoto, T., Moriyama, S., & Tsukamoto, K. (2020). Ghrelin and food acquisition in wild and cultured Japanese eel (Anguilla japonica). Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology, 245, Article 110700. https://doi.org/10.1016/j.cbpa.2020.110700

Yada, T, Abe, M, Kaifu, K, Yokouchi, K, Fukuda, N, Kodama, S, Hakoyama, H, Ogoshi, M, Kaiya, H, Sakamoto, T, Moriyama, S & Tsukamoto, K 2020, 'Ghrelin and food acquisition in wild and cultured Japanese eel (Anguilla japonica)', Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology, vol. 245, 110700. https://doi.org/10.1016/j.cbpa.2020.110700

@article{33addf2e11d84a3d84582b10f895a58e,

title = "Ghrelin and food acquisition in wild and cultured Japanese eel (Anguilla japonica)",

abstract = "To clarify the relationships between growth, endocrine status and habitat characteristics in Japanese eel (Anguilla japonica), plasma and stomach mRNA levels of ghrelin were examined in wild eels captured in the river and the bay, and in cultured eels during and after experimental fasting. Wild juvenile eels captured in freshwater habitats within the river showed significantly higher plasma and stomach mRNA levels of ghrelin than did fish obtained from brackish-water habitats within the bay. In cultured eels experimentally fasted for 4 weeks, plasma and stomach mRNA levels of ghrelin increased. After refeeding, the both parameters returned to the levels observed in continuously feeding control fish. In pigmented elvers, 2 months of feed restriction resulted in a significant increase in whole-body ghrelin mRNA. It is suggested that interaction between ghrelin and feeding is related to their habitats through differential food acquisition in fresh and brackish water environments.",

keywords = "Cortisol, Food acquisition, Ghrelin, Growth hormone, Insulin-like growth factor, Japanese eel",

author = "Takashi Yada and Michihisa Abe and Kenzo Kaifu and Kazuki Yokouchi and Nobuto Fukuda and Sakie Kodama and Hiroshi Hakoyama and Maho Ogoshi and Hiroyuki Kaiya and Tatsuya Sakamoto and Shunsuke Moriyama and Katsumi Tsukamoto",

note = "Funding Information: This study was supported in part by a grant-in-aid from the Ministry of Agriculture , Forestry and Fisheries , Japan; JSPS KAKENHI, Japan, Grant Number JP20570065 to Hiroyuki Kaiya, JP24360201 , JP26450296 , and JP17K07950 to Takashi Yada. Publisher Copyright: {\textcopyright} 2020 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = jul,

doi = "10.1016/j.cbpa.2020.110700",

language = "English",

volume = "245",

journal = "Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology",

issn = "1095-6433",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Ghrelin and food acquisition in wild and cultured Japanese eel (Anguilla japonica)

AU - Yada, Takashi

AU - Abe, Michihisa

AU - Kaifu, Kenzo

AU - Yokouchi, Kazuki

AU - Fukuda, Nobuto

AU - Kodama, Sakie

AU - Hakoyama, Hiroshi

AU - Ogoshi, Maho

AU - Kaiya, Hiroyuki

AU - Sakamoto, Tatsuya

AU - Moriyama, Shunsuke

AU - Tsukamoto, Katsumi

N1 - Funding Information: This study was supported in part by a grant-in-aid from the Ministry of Agriculture , Forestry and Fisheries , Japan; JSPS KAKENHI, Japan, Grant Number JP20570065 to Hiroyuki Kaiya, JP24360201 , JP26450296 , and JP17K07950 to Takashi Yada. Publisher Copyright: © 2020 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/7

Y1 - 2020/7

N2 - To clarify the relationships between growth, endocrine status and habitat characteristics in Japanese eel (Anguilla japonica), plasma and stomach mRNA levels of ghrelin were examined in wild eels captured in the river and the bay, and in cultured eels during and after experimental fasting. Wild juvenile eels captured in freshwater habitats within the river showed significantly higher plasma and stomach mRNA levels of ghrelin than did fish obtained from brackish-water habitats within the bay. In cultured eels experimentally fasted for 4 weeks, plasma and stomach mRNA levels of ghrelin increased. After refeeding, the both parameters returned to the levels observed in continuously feeding control fish. In pigmented elvers, 2 months of feed restriction resulted in a significant increase in whole-body ghrelin mRNA. It is suggested that interaction between ghrelin and feeding is related to their habitats through differential food acquisition in fresh and brackish water environments.

AB - To clarify the relationships between growth, endocrine status and habitat characteristics in Japanese eel (Anguilla japonica), plasma and stomach mRNA levels of ghrelin were examined in wild eels captured in the river and the bay, and in cultured eels during and after experimental fasting. Wild juvenile eels captured in freshwater habitats within the river showed significantly higher plasma and stomach mRNA levels of ghrelin than did fish obtained from brackish-water habitats within the bay. In cultured eels experimentally fasted for 4 weeks, plasma and stomach mRNA levels of ghrelin increased. After refeeding, the both parameters returned to the levels observed in continuously feeding control fish. In pigmented elvers, 2 months of feed restriction resulted in a significant increase in whole-body ghrelin mRNA. It is suggested that interaction between ghrelin and feeding is related to their habitats through differential food acquisition in fresh and brackish water environments.

KW - Cortisol

KW - Food acquisition

KW - Ghrelin

KW - Growth hormone

KW - Insulin-like growth factor

KW - Japanese eel

UR - http://www.scopus.com/inward/record.url?scp=85083357820&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85083357820&partnerID=8YFLogxK

U2 - 10.1016/j.cbpa.2020.110700

DO - 10.1016/j.cbpa.2020.110700

M3 - Article

C2 - 32294535

AN - SCOPUS:85083357820

SN - 1095-6433

VL - 245

JO - Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology

JF - Comparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology

M1 - 110700

ER -

Ghrelin and food acquisition in wild and cultured Japanese eel (Anguilla japonica)

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this