This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
This research was conducted to evaluate the effects of Apium graveolens leaf extract on Labeo chr... more This research was conducted to evaluate the effects of Apium graveolens leaf extract on Labeo chrysophekadion. The fish were fed 0, 0.25, 0.50 and 0.75 g kg−1 leaf extract to supplement their diets for 150 days. The results revealed that the highest weigh gain and average daily gain being observed in fish that were fed 0.75 g kg−1. Furthermore, a lower feed conversion rate was observed in fish fed 0.50 and 0.75 g kg−1. Biochemical indices, the highest cholesterol level was found in a group fed 0.75 g kg−1, while glucose was found to be significantly higher in groups fed 0.25 and 0.50 g kg−1. Total protein, albumin and globulin levels were shown to have significantly (p
Indochinamon bhumibol has been found as the biggest freshwater crab in Thailand. In this study, w... more Indochinamon bhumibol has been found as the biggest freshwater crab in Thailand. In this study, we report the first complete sequence of mitochondrial genome from I. bhumibol encoding 13 protein-coding genes, 22 transfer RNAs, and 2 ribosomal RNAs. The nucleotide composition of I. bhumibol mitogenome showed a strong AT bias (70.4%) with a low GC content (29.6%). Comparative phylogenetic analysis with 28 crustaceans based on nine conserved genes demonstrated that I. bhumibol was closely related to members of the Potamidae family.
In this paper, we study nonassociative algebras which satisfy the following identities: (xy)z = (... more In this paper, we study nonassociative algebras which satisfy the following identities: (xy)z = (yx)z, x(yz) = x(zy). These algebras are Lie-admissible algebras i.e., they become Lie algebras under the commutator [f, g] = f g − gf. We obtain a nonassociative Gröbner-Shirshov basis for the free algebra LA(X) with a generating set X of the above variety. As an application, we get a monomial basis for LA(X). We also give a characterization of the elements of S(X) among the elements of LA(X), where S(X) is the Lie subalgebra, generated by X, of LA(X).
Stemona curtissi and Mammea siamensis are the medicinal plants used for insecticidal purpose. How... more Stemona curtissi and Mammea siamensis are the medicinal plants used for insecticidal purpose. However, the extract of these plants may also affect non-target organisms. Thus, the histopathological changes of gills and kidneys in nile tilapia, Oreochromis niloticus, ex pos ed to bioinsecticide produced from S. curtisii and M. siamensis (0.019 mg/l and 0.009 mg/l) as compared to lannate, a commercial insecticide, (0.972 mg/l and 0.486 mg/l) for 75 days were investigated. The disorganization, bending and fusing including the aneurisms at tip area of 2 0 gill lamellae (SL) were found in fish exposed to bioinsecticide at concentration of 0.019 mg/l and all doses of lannate. SL dysplasia was obviously noticed in lannate group. Blood congestion in central area of 1gill lamellae was also observed. Nevertheless, SL dysplasia was not evident in fish exposed to bioinsecticide. Both bioinsecticide and lannate caused similar histopathological changes in kidney. These included large extracellular...
The lysozyme activities were investigated in three catfish: hybrid catfish [Clarias macrocephalus... more The lysozyme activities were investigated in three catfish: hybrid catfish [Clarias macrocephalus (Günther 1864) x Clarias gariepinus (Burchell 1822)], Hemibagrus filamentus (Fang and Chaux 1949), and Kryptopterus apogon (Bleeker 1851) and two carps: Oreochromis niloticus (Linnaeus 1758) and Channa striata (Bloch 1793). Fish samples used in this study were from two sites of Chiang Mai province; C. macrocephalus x C. gariepinus and O. niloticus were from Ton Payom Market, Amphoe Muang. H. filamentus, K. apogon, and C. striata were from Doi Tao Lake, Amphoe Doi Tao. The serum, brain, liver, and kidney of the catfish and carps from both sites were spectrophotometrically measured at 450 nm by ELISA reader. C. macrocephalus x C. gariepinus and H. filamentus showed the highest lysozyme activity in the serum, followed by the kidney, brain, and liver, respectively, while the highest lysozyme activity was observed in the brain of K. apogon, and the least one was observed in the liver. Among the catfish, lysozyme activities of K. apogon were significantly higher than those of the other fish (P < 0.01). However, no significant difference in lysozyme activity from the three investigated visceral organs was found. In carps, O. niloticus had the highest lysozyme activity in the serum, followed by the kidney, brain, and liver, respectively. Meanwhile, the highest lysozyme activity in C. striata was recorded in the serum, followed by the liver, brain, and kidney. However, there was no significant difference in lysozyme activity from the serum and the internal organs in these two fish. In conclusion, the innate immunity arms in these five fish species encompassed the similar function pattern, although they were differently present in their organs. The data will be used as reference ranks for these species to evaluate health status when they are exposed to some pathogens or chemical contamination in streams and reservoirs.
Temperature shock is a major natural cause of mass mortality of global fish. Nile tilapia Oreochr... more Temperature shock is a major natural cause of mass mortality of global fish. Nile tilapia Oreochromis niloticus, one of the most widely cultured species, with high resistance against severe environmental conditions, is also affected by rapid temperature changes. This research was conducted to investigate histopathological changes and oxidative stress in O. niloticus in response to temperature shock. The malondialdehyde levels in the serum, gills and brain, the histopathology of the gills and brain, and the histochemical characterization of the gills’ mucosubstances were measured in the fish exposed to heat shock and cold shock conditions. The results showed that the fish could not survive under 37 °C for 24 hours. Malondialdehyde levels in the gills, brain and serum increased significantly when compared to those of the controls. Moreover, histopathological changes and a decrease in the number of neutral and acidic mucous cells was observed in the gills of fish in both the heat shock and cold shock groups. Histopathological alteration, vacuolated neuropil in the brain, was observed only in the fish in the cold shock groups. The results from this study indicate that rapid 4 °C changes in water temperature (25–21 and 25–29 °C) evoked oxidative stress and histological damage to O. niloticus, whereas extreme 12 °C changes (25–13 and 25–37 °C) severely affected their oxidative stress and histopathological condition.
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
This research was conducted to evaluate the effects of Apium graveolens leaf extract on Labeo chr... more This research was conducted to evaluate the effects of Apium graveolens leaf extract on Labeo chrysophekadion. The fish were fed 0, 0.25, 0.50 and 0.75 g kg−1 leaf extract to supplement their diets for 150 days. The results revealed that the highest weigh gain and average daily gain being observed in fish that were fed 0.75 g kg−1. Furthermore, a lower feed conversion rate was observed in fish fed 0.50 and 0.75 g kg−1. Biochemical indices, the highest cholesterol level was found in a group fed 0.75 g kg−1, while glucose was found to be significantly higher in groups fed 0.25 and 0.50 g kg−1. Total protein, albumin and globulin levels were shown to have significantly (p
Indochinamon bhumibol has been found as the biggest freshwater crab in Thailand. In this study, w... more Indochinamon bhumibol has been found as the biggest freshwater crab in Thailand. In this study, we report the first complete sequence of mitochondrial genome from I. bhumibol encoding 13 protein-coding genes, 22 transfer RNAs, and 2 ribosomal RNAs. The nucleotide composition of I. bhumibol mitogenome showed a strong AT bias (70.4%) with a low GC content (29.6%). Comparative phylogenetic analysis with 28 crustaceans based on nine conserved genes demonstrated that I. bhumibol was closely related to members of the Potamidae family.
In this paper, we study nonassociative algebras which satisfy the following identities: (xy)z = (... more In this paper, we study nonassociative algebras which satisfy the following identities: (xy)z = (yx)z, x(yz) = x(zy). These algebras are Lie-admissible algebras i.e., they become Lie algebras under the commutator [f, g] = f g − gf. We obtain a nonassociative Gröbner-Shirshov basis for the free algebra LA(X) with a generating set X of the above variety. As an application, we get a monomial basis for LA(X). We also give a characterization of the elements of S(X) among the elements of LA(X), where S(X) is the Lie subalgebra, generated by X, of LA(X).
Stemona curtissi and Mammea siamensis are the medicinal plants used for insecticidal purpose. How... more Stemona curtissi and Mammea siamensis are the medicinal plants used for insecticidal purpose. However, the extract of these plants may also affect non-target organisms. Thus, the histopathological changes of gills and kidneys in nile tilapia, Oreochromis niloticus, ex pos ed to bioinsecticide produced from S. curtisii and M. siamensis (0.019 mg/l and 0.009 mg/l) as compared to lannate, a commercial insecticide, (0.972 mg/l and 0.486 mg/l) for 75 days were investigated. The disorganization, bending and fusing including the aneurisms at tip area of 2 0 gill lamellae (SL) were found in fish exposed to bioinsecticide at concentration of 0.019 mg/l and all doses of lannate. SL dysplasia was obviously noticed in lannate group. Blood congestion in central area of 1gill lamellae was also observed. Nevertheless, SL dysplasia was not evident in fish exposed to bioinsecticide. Both bioinsecticide and lannate caused similar histopathological changes in kidney. These included large extracellular...
The lysozyme activities were investigated in three catfish: hybrid catfish [Clarias macrocephalus... more The lysozyme activities were investigated in three catfish: hybrid catfish [Clarias macrocephalus (Günther 1864) x Clarias gariepinus (Burchell 1822)], Hemibagrus filamentus (Fang and Chaux 1949), and Kryptopterus apogon (Bleeker 1851) and two carps: Oreochromis niloticus (Linnaeus 1758) and Channa striata (Bloch 1793). Fish samples used in this study were from two sites of Chiang Mai province; C. macrocephalus x C. gariepinus and O. niloticus were from Ton Payom Market, Amphoe Muang. H. filamentus, K. apogon, and C. striata were from Doi Tao Lake, Amphoe Doi Tao. The serum, brain, liver, and kidney of the catfish and carps from both sites were spectrophotometrically measured at 450 nm by ELISA reader. C. macrocephalus x C. gariepinus and H. filamentus showed the highest lysozyme activity in the serum, followed by the kidney, brain, and liver, respectively, while the highest lysozyme activity was observed in the brain of K. apogon, and the least one was observed in the liver. Among the catfish, lysozyme activities of K. apogon were significantly higher than those of the other fish (P < 0.01). However, no significant difference in lysozyme activity from the three investigated visceral organs was found. In carps, O. niloticus had the highest lysozyme activity in the serum, followed by the kidney, brain, and liver, respectively. Meanwhile, the highest lysozyme activity in C. striata was recorded in the serum, followed by the liver, brain, and kidney. However, there was no significant difference in lysozyme activity from the serum and the internal organs in these two fish. In conclusion, the innate immunity arms in these five fish species encompassed the similar function pattern, although they were differently present in their organs. The data will be used as reference ranks for these species to evaluate health status when they are exposed to some pathogens or chemical contamination in streams and reservoirs.
Temperature shock is a major natural cause of mass mortality of global fish. Nile tilapia Oreochr... more Temperature shock is a major natural cause of mass mortality of global fish. Nile tilapia Oreochromis niloticus, one of the most widely cultured species, with high resistance against severe environmental conditions, is also affected by rapid temperature changes. This research was conducted to investigate histopathological changes and oxidative stress in O. niloticus in response to temperature shock. The malondialdehyde levels in the serum, gills and brain, the histopathology of the gills and brain, and the histochemical characterization of the gills’ mucosubstances were measured in the fish exposed to heat shock and cold shock conditions. The results showed that the fish could not survive under 37 °C for 24 hours. Malondialdehyde levels in the gills, brain and serum increased significantly when compared to those of the controls. Moreover, histopathological changes and a decrease in the number of neutral and acidic mucous cells was observed in the gills of fish in both the heat shock and cold shock groups. Histopathological alteration, vacuolated neuropil in the brain, was observed only in the fish in the cold shock groups. The results from this study indicate that rapid 4 °C changes in water temperature (25–21 and 25–29 °C) evoked oxidative stress and histological damage to O. niloticus, whereas extreme 12 °C changes (25–13 and 25–37 °C) severely affected their oxidative stress and histopathological condition.
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