English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2352166      Online Users : 26
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41114

Title: Potential factors affecting the body weight of bluegill Lepomis macrochirus in Lake Biwa, Japan
Authors: YAMAMOTO, Yoshimasa
Fuh-Kwo SHIAH
Contributors: Folia Zoologica -Praha- 62(2)
Keywords: thermal condition
morphological variation
length-length relationship
length-weight relationship
adaptation
Date: 2013-06
Issue Date: 2017-02-08T08:18:54Z
Publisher: Folia Zoologica -Praha-
Abstract: Abstract: Lake Biwa consists of a large, deep north basin and a small, shallow south basin, and the body weights of bluegill Lepomis macrochirus in the north basin tend to exceed those in the south basin. To elucidate the cause of this phenomenon, the physical characteristics of the fish in the two basins were compared. The fish in the north basin had larger gonads and stomachs than did the fish in the south basin, but the contributions of these organs to the body weight were very small. The body weights of the fish in the north basin still exceeded those in the south basin after the subtraction of the weights of the gonad and stomach. Bluegill in the north basin had deeper bodies than those in the south basin. The heavier body tissues of bluegill in the north basin appear to be an adaptive response to the colder environment. Given the flourishing of largemouth bass Micropterus salmoides in the littoral zone in the north basin, the deeper bodies of bluegill there may contribute to their increased survival rate by reducing their vulnerability to predation by largemouth bass.
Relation: 62(2)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41114
Appears in Collections:[海洋環境與生態研究所] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML35View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback