Abstract：
:Abstract: Histology of gill, liver and kidney in juvenile fish Colossoma macropomum exposed to three temperatures. Water temperature is an important factor that affects growth and antioxidant enzyme activities in fish, and when adverse, it may trigger diseases in fish populations. C. macropomum is a freshwater neotropical fish widely distributed in South America and abundant in river basins as the Amazon and Orinoco. It is highly used for intensive aquaculture development and is a very important product for the local riverside economy in Venezuela. The purpose of our study was to examine the water temperature effect on gills, liver and kidneys of juvenile fishes of C macropomum. Eighteen juveniles with biometrical index of 17.87 +/- 7.88 cm and 87.69 +/- 34.23 g were respectively exposed to three culture temperatures (T18, T29 and T35 degrees C) during a period of 21 days. Histological analyses on gills, liver and kidney were made according to standard methodologies. Our results showed that these tissues exhibited normal citoarchitecture at T29. On the contrary, T18-gills displayed brachiallipid droplets inside brachial epithelium; and disorganization in the brachial tissue was observed at T35. Furthermore, we observed two kinds of hepatocytes (dark and light) on T180 degrees C-liver. The T35-liver samples showed cytoplasmatic granulation and damages in cytoplasmatic membrane. Kidney samples from T18 observed alterations in the cellular distribution of the hematopoietic tissue; while, at T35, the most important feature observed was the disorganization of the glomerular structure. We concluded that T18 and T35 are respectively critical and severe temperatures to C. macropomum; besides, the most sensible tissues to changes induced by temperature in this species were the liver and gills.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
Rojas LM,Mata C,Oliveros A,Salazar-Lugo Rsubject
Has Abstractpub_date
2013-06-01 00:00:00pages
797-806issue
2eissn
0034-7744issn
2215-2075journal_volume
61pub_type
杂志文章abstract：:Captivity represents an extreme situation for primates, especially for those with large home ranges, and its effect on their behavior might be considerable. The Wedge-capped Capuchin Monkey Cebus olivaceus is the most common primate in Venezuelan zoos. To estimate the effect of confinement on C. olivaceus behavior, we...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2008-09-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2003-06-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2008-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章,评审
doi：
更新日期：1996-08-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2011-03-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2007-03-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2006-09-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2016-12-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2013-03-01 00:00:00
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journal_title：Revista de biologia tropical
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doi：
更新日期：1998-03-01 00:00:00
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journal_title：Revista de biologia tropical
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doi：
更新日期：2012-03-01 00:00:00
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journal_title：Revista de biologia tropical
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doi：
更新日期：1986-06-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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journal_title：Revista de biologia tropical
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doi：
更新日期：2010-10-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2014-04-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2008-06-01 00:00:00
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更新日期：2008-12-01 00:00:00
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journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
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更新日期：2009-03-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：1998-09-01 00:00:00
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更新日期：1983-11-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2013-09-01 00:00:00
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更新日期：2013-03-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2005-05-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2014-04-01 00:00:00
