Abstract：
:This study investigated differences in the cortisol response of fish at different developmental stages after exposure to an acute stressor. Three experiments using 126 fish each were performed using 3 different age groups of jundiá (Rhamdia quelen): fingerlings at 60 days of age, juveniles at 180 days, and adults at 360 days. In each experiment, the fish in each group were randomly distributed into either a handled experimental group or a non-handled control group. The handled group was then exposed to an acute stressor for measurement of cortisol concentrations at 5, 15, 30, 60, and 240 min after exposure and subsequent comparison of cortisol concentrations with those of the non-handled groups at the 6 sampling times. Between the experimental and control groups, the results revealed that the handled fish in each of the 3 age groups had higher cortisol concentrations compared to the non-handled fish in the equivalent age group. Among the age groups of the handled fish, the results revealed that the fingerlings and juveniles attained peak cortisol concentrations within 5 to 30 min after stressor exposure whereas the adults attained peak concentrations 60 min after exposure. This finding has important implications for the design of research into stress and welfare among fish at different developmental stages.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Koakoski G,Oliveira TA,da Rosa JG,Fagundes M,Kreutz LC,Barcellos LJdoi
10.1016/j.physbeh.2012.01.013subject
Has Abstractpub_date
2012-05-15 00:00:00pages
129-32issue
2eissn
0031-9384issn
1873-507Xpii
S0031-9384(12)00033-9journal_volume
106pub_type
杂志文章abstract：:Effects of maternal separation on feeding behavior, particularly on rebound hyperphagia, in adult rats were examined. Time-restricted scheduled feeding (2 h per day for 6 days), was given at the age of 3, 6, 9 or 12 weeks in rats that were maternal separated from postnatal days (PD) 1-21 and control rats. Following th...
journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(00)00305-x
更新日期：2000-09-15 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(84)90045-3
更新日期：1984-11-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(96)00302-2
更新日期：1996-12-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90080-6
更新日期：1986-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(85)90410-x
更新日期：1985-11-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,评审
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更新日期：2017-12-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2010.04.012
更新日期：2010-08-04 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(88)90114-x
更新日期：1988-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(02)01002-8
更新日期：2003-03-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 临床试验,杂志文章
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更新日期：1996-11-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：2017-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 临床试验,杂志文章
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更新日期：2006-07-30 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90099-0
更新日期：1987-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90042-9
更新日期：1986-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(95)00080-3
更新日期：1995-09-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2004.05.006
更新日期：2004-09-15 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2003.11.005
更新日期：2004-02-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/s0031-9384(96)00563-x
更新日期：1997-05-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(91)90546-z
更新日期：1991-09-01 00:00:00
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doi：10.1016/0031-9384(94)90365-4
更新日期：1994-12-01 00:00:00
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pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：1994-09-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：1991-08-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
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更新日期：2017-03-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2009.03.015
更新日期：2009-06-22 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章,评审
doi：10.1016/j.physbeh.2008.04.007
更新日期：2008-08-06 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(94)90002-7
更新日期：1994-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/j.physbeh.2020.113105
更新日期：2020-10-15 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(87)90209-5
更新日期：1987-01-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(83)90148-8
更新日期：1983-03-01 00:00:00
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journal_title：Physiology & behavior
pub_type： 杂志文章
doi：10.1016/0031-9384(86)90456-7
更新日期：1986-01-01 00:00:00
