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Size of Larval Northern Pike Emigrating from Spawning Wetlands

 

作者: JamesV. Morrow,   GaryL. Miller,  

 

期刊: Journal of Freshwater Ecology  (Taylor Available online 1998)
卷期: Volume 13, issue 3  

页码: 343-349

 

ISSN:0270-5060

 

年代: 1998

 

DOI:10.1080/02705060.1998.9663627

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

We collected larval northern pike (Esox lucius) in spawning wetlands and adjacent deepwater habitat during the springs of 1993 and 1994. Larval northern pike began to emigrate from spawning wetlands at sizes as small as 14.0 mm TL; however, they remained in close proximity to spawning wetlands until reaching sizes of 50 mm TL or greater. The initial emigration began before larvae became cannibalistic, and larger larvae emigrated before smaller ones indicating that intraspecific aggression probably does not play a role in this stage of emigration. Samples later in the spring indicated that some larvae either delayed emigration or returned to deeper parts of spawning wetlands. Transitional habitats may be important for survival of young of the year northern pike.

 

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