Biology and Management of Inland Striped Bass and Hybrid Striped Bass

2013 ◽  
Keyword(s):  
Striped Bass ◽  
Growth Rates ◽  
Morone Saxatilis ◽  
Mortality Rates ◽  
Minimum Length ◽  
Hybrid Striped Bass ◽  
White Bass ◽  
Management Objectives ◽  
The Mean ◽  
Annual Mortality

Abstract.— Total annual mortality and mortality caps (maximum mortality thresholds) were estimated for hybrid striped bass (striped bass <em>Morone saxatilis</em> × white bass <em>M. chrysops</em>) populations sampled in six large Kansas reservoirs spanning 1995–2001; all reservoirs lacked a minimum length limit but had a 2/d creel limit. Total annual mortality of age-1 and older hybrid striped bass was estimated using a weighted catch curve. Mortality caps were modeled by varying growth rates and management objectives. Mortality rates that approach the cap signal the need for increased monitoring to determine what additional management action should be taken (e.g., harvest regulations to reduce mortality) or to reevaluate the size objective (targeted mean length of harvested fish) for the fishery. Estimated mortality caps were then compared with observed growth and mortality rates. Total annual mortality rates for all reservoirs varied from 22% to 52% (mean = 38%; SE = 4.9). All but two reservoirs had total annual mortality rates greater than 40%. Analysis of mortality caps indicated that when the objective was to maintain the mean length of harvested hybrid striped bass at current levels, total annual mortality was lower than the mortality cap for most reservoirs if a 381 mm total length (TL) minimum length limit (i.e., preferred length) were to be imposed. A management objective of 500 mm TL for the mean length of harvested hybrid striped bass was realistic for all reservoirs modeled with a 457-mm-TL length limit (special regulation available to managers) but only for two reservoirs with a 381-mm-TL length limit. Likewise, only two of the study reservoirs could support a management objective of 550 mm TL (herein defined as trophy length) for mean length of harvested hybrid striped bass when modeled with a 457-mm-TL length limit. Our analysis illustrates the potential of mortality caps for monitoring and establishing realistic management goals for hybrid striped bass fisheries.

Biology and Management of Inland Striped Bass and Hybrid Striped Bass

2013 ◽  
Keyword(s):  
Striped Bass ◽  
The United States ◽  
Minimum Length ◽  
State Agencies ◽  
Hybrid Striped Bass ◽  
White Bass ◽  
Regulatory Strategies ◽  
Intensively Managed ◽  
Catch Rates ◽  
Sport Fish

<em>Abstract</em>.—Inland populations of striped bass <em>Morone saxatilis </em>and hybrid striped bass (white bass <em>M. chrysops </em>× striped bass) are intensively managed across the United States for their recreational value using a variety of regulations; however, the full extent of different regulatory strategies is unknown. This paper describes regulations used by states to manage their inland striped bass and hybrid striped bass fisheries. An Internet-based survey seeking information on issues such as stocking dependency, trophy potential, catch rates, and statewide and specialized regulations for both striped bass and hybrid striped bass fisheries was created and distributed to all state agencies. The survey found that 32 states have inland populations of striped bass, hybrid striped bass, or both. Daily creel limits for striped bass and hybrid striped bass ranged from 2 to 30; the most liberal creel limits were found in southern states. Half of the states reported that their statewide length limit for both taxa has few or no exceptions for conditions in particular water bodies, and 85% of states with striped bass and 92% of states with hybrid striped bass enforce a minimum length limit as their statewide length limit. Although both taxa were generally managed with similar regulations, striped bass were usually considered a more important sport fish species and were managed more intensively than hybrid striped bass. A literature review confirmed that little research has been published on the response (or lack thereof) of striped bass and their hybrids to any of the various management schemes reported herein.

scholarly journals Candidate Species for Florida Aquaculture: Hybrid Striped Bass, Morone saxatilis x Morone chrysops

EDIS ◽  
2009 ◽  
Vol 2009 (1) ◽  
Author(s):  
Cortney L. Ohs ◽  
Christian L. Miller ◽  
R. LeRoy Creswell
Keyword(s):  
Water Quality ◽  
Striped Bass ◽  
Morone Saxatilis ◽  
Forest Resources ◽  
Hybrid Striped Bass ◽  
White Bass ◽  
Morone Chrysops ◽  
Sunshine Bass ◽  
Candidate Species ◽  
Aquatic Sciences

FA155, a 9-page illustrated fact sheet by Cortney L. Ohs, Christian L. Miller, and R. LeRoy Creswell, describes these crosses between striped bass and white bass, commonly called sunshine bass and palmetto bass — geographical distribution and habitat, phases of production, pond, cage, and tank production, feeding, water quality, and marketing. Includes references. Published by the UF School of Forest Resources and Conservation Program for Fisheries and Aquatic Sciences, December 2008. FA155/FA155: Candidate Species for Florida Aquaculture: Hybrid Striped Bass, Morone saxatilis x Morone chrysops (ufl.edu)

scholarly journals Regulation of endocrine and paracrine sources of Igfs and Gh receptor during compensatory growth in hybrid striped bass (Morone chrysops×Morone saxatilis)

2008 ◽  
Vol 199 (1) ◽  
pp. 81-94 ◽  
Author(s):  
Matthew E Picha ◽  
Marc J Turano ◽  
Christian K Tipsmark ◽  
Russell J Borski
Keyword(s):  
Gene Expression ◽  
Skeletal Muscle ◽  
Striped Bass ◽  
Compensatory Growth ◽  
Morone Saxatilis ◽  
Type I ◽  
Hybrid Striped Bass ◽  
Morone Chrysops ◽  
Gh Receptor ◽  
Catabolic State

Compensatory growth (CG) is a period of growth acceleration that exceeds normal rates after animals are alleviated of certain growth-stunting conditions. In hybrid striped bass (HSB, Morone chrysops×Morone saxatilis), 3 weeks of complete feed restriction results in a catabolic state that, when relieved, renders a subsequent phase of CG. The catabolic state was characterized by depressed levels of hepatic Type I and II GH receptor (ghr1, ghr2) and igf1 mRNA, along with considerable decreases in plasma Igf1. The state of catabolism also resulted in significant declines in hepatic igf2 mRNA and in circulating 40 kDa Igf-binding protein (Igfbp). Skeletal muscle expression of ghr2 mRNA was significantly increased. Upon realimentation, specific growth rates (SGRs) were significantly higher than sized-matched controls, indicating a period of CG. Hepatic ghr1, ghr2, igf1 and igf2 mRNA levels along with plasma Igf1 and 40 kDa Igfbp increased rapidly during realimentation. Plasma Igf1 and total hepatic igf2 mRNA were significantly correlated to SGR throughout the study. Skeletal muscle igf1 mRNA also increased tenfold during CG. These data suggest that endocrine and paracrine/autocrine components of the GH–Igf axis, namely igf1, igf2, and ghr1 and ghr2, may be involved in CG responses in HSB, with several of the gene expression variables exceeding normal levels during CG. We also demonstrate that normalization of hepatic mRNA as a function of total liver production, rather than as a fraction of total RNA, may be a more biologically appropriate method of quantifying hepatic gene expression when using real-time PCR.

Biology and Management of Inland Striped Bass and Hybrid Striped Bass

2013 ◽  
Keyword(s):  
Dissolved Oxygen ◽  
Striped Bass ◽  
Warm Season ◽  
Apparent Temperature ◽  
Fish Mortality ◽  
Temperature Sensitive ◽  
Hybrid Striped Bass ◽  
White Bass ◽  
Total Length ◽  
Length Range

<em>Abstract</em>.—We compared the habitat selection (temperature and dissolved oxygen) of striped bass (STB) <em>Morone saxatilis</em> and hybrid striped bass (HSB; palmetto bass [male white bass <em>M. chrysops</em> × female striped bass]) in Claytor Lake, Virginia. Striped bass (<em>n </em>= 28) and HSB (<em>n </em>= 33) were implanted with temperature-sensitive radio tags and tracked biweekly for a period of 19 months to record position and habitat use. Striped bass averaged 715 mm total length (range 533–940) whereas HSB averaged 547 mm total length (range 460–659). Habitat separation was most apparent in the warm season months of June through August. During this period, when deoxygenation of the metalimnion and hypolimnion was not limiting, STB and HSB segregated according to apparent temperature preferences, with HSB selecting warmer temperatures. As deoxygenation progressed, HSB and especially STB were forced into warmer strata than preferred. Results from this study suggest that if favorable dissolved oxygen levels are maintained, STB and HSB will vertically segregate during summer stratification. Temperature selection and qualitative observations of fish mortality in summer indicated that adult HSB would be less vulnerable than adult STB to a temperature–dissolved oxygen squeeze in summer and its detrimental effects.

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