کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8318441 | 1538984 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gill remodelling and growth rate of striped catfish Pangasianodon hypophthalmus under impacts of hypoxia and temperature
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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چکیده انگلیسی
Gill morphometric and gill plasticity of the air-breathing striped catfish (Pangasianodon hypophthalmus) exposed to different temperatures (present day 27 °C and future 33 °C) and different air saturation levels (92% and 35%) during 6 weeks were investigated using vertical sections to estimate the respiratory lamellae surface areas, harmonic mean barrier thicknesses, and gill component volumes. Gill respiratory surface area (SA) and harmonic mean water - blood barrier thicknesses (HM) of the fish were strongly affected by both environmental temperature and oxygen level. Thus initial values for 27 °C normoxic fish (12.4 ± 0.8 g) were 211.8 ± 21.6 mm2 gâ 1 and 1.67 ± 0.12 μm for SA and HM respectively. After 5 weeks in same conditions or in the combinations of 33 °C and/or PO2 of 55 mm Hg, this initial surface area scaled allometrically with size for the 33 °C hypoxic group, whereas branchial SA was almost eliminated in the 27 °C normoxic group, with other groups intermediate. In addition, elevated temperature had an astounding effect on growth with the 33 °C group growing nearly 8-fold faster than the 27 °C fish.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology - Volume 203, January 2017, Pages 288-296
Journal: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology - Volume 203, January 2017, Pages 288-296
نویسندگان
Le My Phuong, Do Thi Thanh Huong, Jens Randel Nyengaard, Mark Bayley,