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Identifying structural elements needed for development of a predictive life‐history model for pallid and shovelnose sturgeons
Author(s) -
Wildhaber M. L.,
DeLonay A. J.,
Papoulias D. M.,
Galat D. L.,
Jacobson R. B.,
Simpkins D. G.,
Braaten P. J.,
Korschgen C. E.,
Mac M. J.
Publication year - 2011
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2011.01731.x
Subject(s) - sturgeon , biology , endangered species , sympatric speciation , fishery , life history , ecology , habitat , fish <actinopterygii>
Summary Intensive management of the Missouri and Mississippi Rivers has resulted in dramatic changes to the river systems and their biota. These changes have been implicated in the decline of the pallid sturgeon ( Scaphirhynchus albus ), which has been listed as a United States federal endangered species. The sympatric shovelnose sturgeon ( S. platorynchus ) is more common and widespread but has also been in decline. The decline of pallid sturgeon is considered symptomatic of poor reproductive success and low or no recruitment. In order to organize information about these species and provide a basis for future development of a predictive model to help guide recovery efforts, we present an expert‐vetted, conceptual life‐history framework that incorporates the factors that affect reproduction, growth, and survival of shovelnose and pallid sturgeons.