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Comparisons of two types of teleostean pseudobranchs, silver moony (Monodactylus argenteus) and tilapia (Oreochromis mossambicus), with salinity-dependent morphology and ion transporter expression.
J Comp Physiol B. 2015 Aug; 185(6):677-93.JC

Abstract

There are essentially four different morphological types of pseudobranchs in teleosts, including lamellae-free, lamellae semi-free, covered, and embedded types. In the euryhaline silver moony (Monodactylus argenteus), the pseudobranch belongs to the lamellae semi-free type, which is characterized by one row of filaments on the opercular membrane and fusion on the buccal edge. The pseudobranchial epithelium of the moony contains two types of Na(+), K(+)-ATPase (NKA)-rich cells: chloride cells (CCs) and pseudobranch-type cells (PSCs). Our results revealed increased expression of NKA, the Na(+), K(+), 2Cl(-) cotransporter (NKCC), and the cystic fibrosis transmembrane conductance regulator (CFTR) for Cl(-) secretion and CCs profiles in the pseudobranchs of seawater (SW)-acclimated silver moonies, which indicates the potential role of pseudobranchs containing CCs in hypo-osmoregulation. In contrast, the pseudobranch of the Mozambique tilapia (Oreochromis mossambicus) belongs to the embedded type, which is covered by the connective tissues and only contains PSCs but not CCs. No sign of NKCC and CFTR-immunoreactivity (IR) was found in the pseudobranchs of SW and freshwater (FW) tilapia. However, higher NKA protein expression and larger sizes of NKA-IR PSCs were found in the pseudobranchs of FW-acclimated tilapia. Moreover, in the FW-acclimated moony, NKA-IR PSCs also exhibited higher numbers and larger sizes than in the SW individuals. Taken together, similar responses in low-salinity environments in different types of pseudobranchs indicated that the salinity-dependent morphologies of PSCs might be involved in critical functions for FW teleosts.

Authors+Show Affiliations

Department of Life Sciences, National Chung Hsing University, 250, Kuo-Kuang Road, Taichung, 402, Taiwan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26033267

Citation

Yang, Sheng-Hui, et al. "Comparisons of Two Types of Teleostean Pseudobranchs, Silver Moony (Monodactylus Argenteus) and Tilapia (Oreochromis Mossambicus), With Salinity-dependent Morphology and Ion Transporter Expression." Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology, vol. 185, no. 6, 2015, pp. 677-93.
Yang SH, Kang CK, Hu YC, et al. Comparisons of two types of teleostean pseudobranchs, silver moony (Monodactylus argenteus) and tilapia (Oreochromis mossambicus), with salinity-dependent morphology and ion transporter expression. J Comp Physiol B. 2015;185(6):677-93.
Yang, S. H., Kang, C. K., Hu, Y. C., Yen, L. C., Tsai, S. C., Hsieh, Y. L., & Lee, T. H. (2015). Comparisons of two types of teleostean pseudobranchs, silver moony (Monodactylus argenteus) and tilapia (Oreochromis mossambicus), with salinity-dependent morphology and ion transporter expression. Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology, 185(6), 677-93. https://doi.org/10.1007/s00360-015-0913-9
Yang SH, et al. Comparisons of Two Types of Teleostean Pseudobranchs, Silver Moony (Monodactylus Argenteus) and Tilapia (Oreochromis Mossambicus), With Salinity-dependent Morphology and Ion Transporter Expression. J Comp Physiol B. 2015;185(6):677-93. PubMed PMID: 26033267.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparisons of two types of teleostean pseudobranchs, silver moony (Monodactylus argenteus) and tilapia (Oreochromis mossambicus), with salinity-dependent morphology and ion transporter expression. AU - Yang,Sheng-Hui, AU - Kang,Chao-Kai, AU - Hu,Yau-Chung, AU - Yen,Ling-Chia, AU - Tsai,Shu-Chuan, AU - Hsieh,Yueh-Ling, AU - Lee,Tsung-Han, Y1 - 2015/06/02/ PY - 2014/11/09/received PY - 2015/05/13/accepted PY - 2015/04/27/revised PY - 2015/6/3/entrez PY - 2015/6/3/pubmed PY - 2016/4/21/medline SP - 677 EP - 93 JF - Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology JO - J Comp Physiol B VL - 185 IS - 6 N2 - There are essentially four different morphological types of pseudobranchs in teleosts, including lamellae-free, lamellae semi-free, covered, and embedded types. In the euryhaline silver moony (Monodactylus argenteus), the pseudobranch belongs to the lamellae semi-free type, which is characterized by one row of filaments on the opercular membrane and fusion on the buccal edge. The pseudobranchial epithelium of the moony contains two types of Na(+), K(+)-ATPase (NKA)-rich cells: chloride cells (CCs) and pseudobranch-type cells (PSCs). Our results revealed increased expression of NKA, the Na(+), K(+), 2Cl(-) cotransporter (NKCC), and the cystic fibrosis transmembrane conductance regulator (CFTR) for Cl(-) secretion and CCs profiles in the pseudobranchs of seawater (SW)-acclimated silver moonies, which indicates the potential role of pseudobranchs containing CCs in hypo-osmoregulation. In contrast, the pseudobranch of the Mozambique tilapia (Oreochromis mossambicus) belongs to the embedded type, which is covered by the connective tissues and only contains PSCs but not CCs. No sign of NKCC and CFTR-immunoreactivity (IR) was found in the pseudobranchs of SW and freshwater (FW) tilapia. However, higher NKA protein expression and larger sizes of NKA-IR PSCs were found in the pseudobranchs of FW-acclimated tilapia. Moreover, in the FW-acclimated moony, NKA-IR PSCs also exhibited higher numbers and larger sizes than in the SW individuals. Taken together, similar responses in low-salinity environments in different types of pseudobranchs indicated that the salinity-dependent morphologies of PSCs might be involved in critical functions for FW teleosts. SN - 1432-136X UR - https://www.unboundmedicine.com/medline/citation/26033267/Comparisons_of_two_types_of_teleostean_pseudobranchs_silver_moony__Monodactylus_argenteus__and_tilapia__Oreochromis_mossambicus__with_salinity_dependent_morphology_and_ion_transporter_expression_ L2 - http://dx.doi.org/10.1007/s00360-015-0913-9 DB - PRIME DP - Unbound Medicine ER -