Đăng nhập
Tìm kiếm nâng cao
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Tạp chí quốc tế 2018
Số tạp chí 221(2018) Trang: 1-11
Tạp chí: Journal of Experimental Biology

The air-breathing fish Pangasianodon hypophthalmus has been shown to have highly plastic branchial surfaces whose area (SA)increases with temperature and aquatic hypoxia. This modulation occurs through development of inter-lamellar cell mass (ILCM). Paradoxically, in conditions where this fish has been shown capable of covering its entire aerobic scope from the water phase, it has been shown to have a very small branchial SA. To address this paradox, we measured the SA, harmonic mean diffusion distance (τh) and calculated the anatomic diffusion factor (ADF) of the branchial and swim bladder surfaces in fish ranging from 3 to 1900 g at 27°C in normoxia. Since the lamellae were distinguishable from the ILCM, we measured the actual SA as well as the potential SA if ILCM were lost. As a result of lowτh, P. hypophthalmus has a high capacity for branchial oxygen uptake with or without ILCM. Actual and potential gill ADF were 361 and 1002 cm2 μm−1 kg−1, respectively, for a 100 g fish and the ADF of the swim bladder was found to be 308 cm2 μm−1 kg−1. By swimming fish to exhaustion at different temperatures, we show that modulation of this SA is rapid, indicating that the apparent paradox between previous studies is eliminated. Regression analysis of log–log plots of respiratory SA in relation to body mass shows that the gill scales with mass similarly to the SA in active water-breathing fish, whereas the swim bladder scales with mass more like the mammalian lung does. This fish presents a combination of respiratory surfaces not previously seen in air-breathing fish.

Các bài báo khác
Số tạp chí DEPISA Monograpth 5(2018) Trang: 41-57
Tạp chí: Supporting Professional Learning in Sourheast Asian Universiy through DEPISA
Số tạp chí 2018(2018) Trang: 1-18
Tạp chí: Process Integration and Optimization for Sustainability
Số tạp chí 8 (1&2), July(2018) Trang: 146-156
Tạp chí: International Journal of Education and Psychology in the Community
Số tạp chí 63(2018) Trang: 143-148
Tạp chí: Journal of the Faculty of Agriculture, Kyushu University
Số tạp chí 9(2018) Trang: 47-54
Tạp chí: Journal of Social and Development Sciences
Số tạp chí 18(2018) Trang: 2050-2059
Tạp chí: IEEE Sensors Journal
Số tạp chí 4(11)(2018) Trang: 2311-2316
Tạp chí: Journal of Multidisciplinary Engineering Science Studies
Số tạp chí 5(2018) Trang: 80-84
Tác giả: Nguyễn Ánh Minh
Số tạp chí Volume 30 (8),(2018) Trang: Article 143
Tạp chí: Livestock Research for Rural Development
Số tạp chí Volume 8, Issue 3(2018) Trang: 20-26
Tạp chí: International Journal of Scientific and Research Publications
Số tạp chí 77(21)(2018) Trang: 28777-28797
Tạp chí: International Journal of Multimedia Tools and Applications
Số tạp chí 8(2018) Trang: pp 4571–4578 |

Vietnamese | English

Vui lòng chờ...