QTL affecting stress response to crowding in a rainbow trout broodstock population
نویسندگان
چکیده
منابع مشابه
Evidence of major genes affecting stress response in rainbow trout using Bayesian methods of complex segregation analysis.
As a first step toward the genetic mapping of QTL affecting stress response variation in rainbow trout, we performed complex segregation analyses (CSA) fitting mixed inheritance models of plasma cortisol by using Bayesian methods in large full-sib families of rainbow trout. To date, no studies have been conducted to determine the mode of inheritance of stress response as measured by plasma cort...
متن کاملAcute stress response in triploid rainbow trout
The purpose of this study was to determine whether triploid salmonid fishes differ from diploids in their hematological and physiological responses to an acute handling and confinement stress, induced by netting fish from their tanks and placing them in a bucket. Blood samples were Ž . collected from fish prior to the handling stress and at either 30 min rainbow trout or 20 and 40 Ž . min brook...
متن کاملCortisol Response to a Crowding Stress: Heritability and Association with Disease Resistance to Yersinia ruckeri in Rainbow Trout
—The U.S. Department of Agriculture’s National Center for Cool and Cold Water Aquaculture is conducting a breeding program for rainbow trout Oncorhynchus mykiss to develop improved germplasm for the U.S. aquaculture industry. Current selection efforts are focused on growth and disease resistance, but stress response is also a concern. Using plasma cortisol concentrations after a 3-h crowding st...
متن کاملQTL for magnitude of the plasma cortisol response to confinement in rainbow trout
Better understanding of the mechanisms underlying inter-individual variation in stress responses and their links with production traits is a key issue for sustainable animal breeding. In this study, we searched for QTL controlling the magnitude of the plasma cortisol stress response and compared them to body size traits in five F2 full-sib families issued from two rainbow trout lines divergentl...
متن کاملAttenuation of the cortisol response to stress in female rainbow trout chronically exposed to dietary selenomethionine.
Selenomethionine (Se-Met) is the major dietary form of selenium (Se). While Se is a required nutrient, it can also influence the physiological stress response because it stimulates greater concentrations of cortisol in blood plasma of exposed fish. However, little is known about the effects of exposure to Se on the ability to cope with a secondary stressor. In the current study, female rainbow ...
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ژورنال
عنوان ژورنال: BMC Genetics
سال: 2012
ISSN: 1471-2156
DOI: 10.1186/1471-2156-13-97