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Full-Text Articles in Medicine and Health Sciences
Environmental Change Alters Personality In The Rainbow Trout, Oncorhynchus Mykiss, Ashley J. Frost, Jack S. Thomson, Charlotte Smith, Hannah C. Burton, Ben Davis, Phillip C. Watts, Lynne U. Sneddon
Environmental Change Alters Personality In The Rainbow Trout, Oncorhynchus Mykiss, Ashley J. Frost, Jack S. Thomson, Charlotte Smith, Hannah C. Burton, Ben Davis, Phillip C. Watts, Lynne U. Sneddon
Lynne Sneddon, PhD
Boldness is a personality trait that defines how individuals respond to risky situations and has clear fitness consequences. Since the adaptive value of boldness is context dependent, the benefit of a distinct personality is less clear when the environment is unpredictable. An ability to modulate behaviour can be beneficial, although as behavioural plasticity itself may be costly this depends on the levels of environmental stability. Both boldness and its plasticity are linked with physiological stress coping mechanisms, whereby animals with reduced glucocorticoid responses to stress are bolder and less flexible in behaviour. We investigated the behavioural changes made by bold …
Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon
Plasticity Of Boldness In Rainbow Trout, Oncorhynchus Mykiss: Do Hunger And Predation Influence Risk-Taking Behaviour?, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon
Lynne U. Sneddon, Ph.D.
Boldness, a measure of an individual's propensity for taking risks, is an important determinant of fitness but is not necessarily a fixed trait. Dependent upon an individual's state, and given certain contexts or challenges, individuals may be able to alter their inclination to be bold or shy in response. Furthermore, the degree to which individuals can modulate their behaviour has been linked with physiological responses to stress. Here we attempted to determine whether bold and shy rainbow trout, Oncorhynchus mykiss, can exhibit behavioural plasticity in response to changes in state (nutritional availability) and context (predation threat). Individual trout were initially …
Effect Of Gamma Irradiation On Inactivation Of Ichthyophthirius Multifiliis Trophonts And Its Efficacy On Host Response In Experimentally Immunized Rainbow Trout (Oncorhynchus Mykiss), Marzieh Heidarieh, Maryam Hedayati Rad, Ali Reza Mirvaghefi, Adama Diallo, Shalaleh Mousavi, Najmeh Sheikhzadeh, Amir Ali Shahbazfar
Effect Of Gamma Irradiation On Inactivation Of Ichthyophthirius Multifiliis Trophonts And Its Efficacy On Host Response In Experimentally Immunized Rainbow Trout (Oncorhynchus Mykiss), Marzieh Heidarieh, Maryam Hedayati Rad, Ali Reza Mirvaghefi, Adama Diallo, Shalaleh Mousavi, Najmeh Sheikhzadeh, Amir Ali Shahbazfar
Turkish Journal of Veterinary & Animal Sciences
The present study was conducted to investigate the effects of gamma irradiation on Ichthyophthirius multifiliis trophonts and to determine the effects of exposure on inactivated parasites in rainbow trout. In the first trial, fish were treated with irradiated Ichthyophthirius multifiliis trophonts for 21 days. Results showed that irradiation at doses of 150 Gy and higher was required to inactivate Ichthyophthirius multifiliis trophonts. The LD50 value obtained was 52.2 Gy. In the second trial, the effects of irradiated Ichthyophthirius multifiliis trophonts on physiological and biochemical components of blood and mucus, as well as skin morphology, were studied for 30 days. Results …
Changes In Carbonic Anhydrase Activity And Gene Expression Of Hsp70 In Rainbow Trout (Oncorhynchus Mykiss) Muscle After Exposure To Some Metals, Hakan Söyüt, Şükrü Beydemi̇r, Saltuk Buğrahan Ceyhun, Orhan Erdoğan, Eli̇f Duygu Kaya
Changes In Carbonic Anhydrase Activity And Gene Expression Of Hsp70 In Rainbow Trout (Oncorhynchus Mykiss) Muscle After Exposure To Some Metals, Hakan Söyüt, Şükrü Beydemi̇r, Saltuk Buğrahan Ceyhun, Orhan Erdoğan, Eli̇f Duygu Kaya
Turkish Journal of Veterinary & Animal Sciences
The effects of some heavy metals Co(II), Cu(II), Zn(II), and Ag(I) on carbonic anhydrase (CA) activity from rainbow trout (RT) muscle were investigated. Moreover, the effects of these metals on the expression of heat shock protein 70 (Hsp70) gene in muscle tissue were examined by real-time quantitative PCR (RT-PCR) in muscle tissue after exposure to the metals at the end of 6, 12, 24, and 48 h. CA was purified with a specific activity of 2300 EU mg^{-1}, a yield of 19%, and 1080-fold. The molecular weights (Mw) of subunit and native enzyme were approximately 30 and 31 kDa, respectively. …
Infectious Pancreatic Necrosis In A Recirculating Rainbow Trout (Oncorhynchus Mykiss) Culture System, Nasrollah Ahmadi, Mostafa Akhlaghi, Ahmad Oryan, Arsalan Hosseini
Infectious Pancreatic Necrosis In A Recirculating Rainbow Trout (Oncorhynchus Mykiss) Culture System, Nasrollah Ahmadi, Mostafa Akhlaghi, Ahmad Oryan, Arsalan Hosseini
Turkish Journal of Veterinary & Animal Sciences
During October 2009, a suspected outbreak of infectious pancreatic necrosis, with typical signs and high mortality, was observed in cultured rainbow trout (Oncorhynchus mykiss) fry (mean weight of 9 g) in a recirculating system in Fars Province, Iran. Tissue samples, including pyloric caeca as well as pancreatic tissues, liver, kidney, and spleen, were aseptically collected from 20 affected moribund fish for histopathological and molecular assays. Histopathologically, the exocrine pancreatic acinar cells exhibited the most notable pathology, including focal to extensive degeneration and coagulative necrosis with mononuclear inflammatory infiltrates. To confirm the diagnosis of clinical infectious pancreatic necrosis (IPN), a reverse …
Effects Of Dietary Fish Oil Replacement By Cottonseed Oil On Growth Performance And Fatty Acid Composition Of Rainbow Trout (Oncorhynchus Mykiss), Müjde Güler, Mustafa Yildiz
Effects Of Dietary Fish Oil Replacement By Cottonseed Oil On Growth Performance And Fatty Acid Composition Of Rainbow Trout (Oncorhynchus Mykiss), Müjde Güler, Mustafa Yildiz
Turkish Journal of Veterinary & Animal Sciences
The aim of the present study was to determine the effects of replacing fish oil (FO) with cottonseed oil (CSO), as an alternative plant lipid source in diets for rainbow trout (89.3 ± 1.1 g mean individual weight), on the growth and fatty acid composition of fish. As a control diet, 5 experimental diets were formulated with pure FO and with partial or complete (25%, 50%, 75%, or 100% CSO, respectively) replacement of FO with CSO. The fish were fed 2% of their body weight per day for 60 days at an average water temperature of 10.2 °C. At the …
Effect Of Noxious Stimulation Upon Antipredator Responses And Dominance Status In Rainbow Trout, Paul J. Ashley, Sian Ringrose, Katie L. Edwards, Emma Wallington, Catherine R. Mccrohan, Lynne U. Sneddon
Effect Of Noxious Stimulation Upon Antipredator Responses And Dominance Status In Rainbow Trout, Paul J. Ashley, Sian Ringrose, Katie L. Edwards, Emma Wallington, Catherine R. Mccrohan, Lynne U. Sneddon
Aquaculture Collection
A potentially painful experience may modify normal behavioural responses. To gauge the importance of pain relative to predation or social status, we presented competing stimuli, a predator cue or an unfamiliar social group, to two groups of noxiously treated rainbow trout, Oncorhynchus mykiss. In the predator cue experiment, fish were classified as bold or shy. Noxiously stimulated fish did not show antipredator responses, suggesting that pain is the imperative. In the social status experiment, noxiously stimulated fish held individually and undisturbed showed an increase in respiration rate and plasma cortisol. As a comparison, we used the dominant or subordinate fish …
Melatonin Administration Increases Antioxidant Enzymes Activities And Reduces Lipid Peroxidation In The Rainbow Trout (Oncorhynchus Mykiss, Walbaum) Erythrocytes, İlhami̇ Gülçi̇n, Şükrü Beydemi̇r, Olcay Hi̇sar, Ekrem Köksal, Russel J. Reiter
Melatonin Administration Increases Antioxidant Enzymes Activities And Reduces Lipid Peroxidation In The Rainbow Trout (Oncorhynchus Mykiss, Walbaum) Erythrocytes, İlhami̇ Gülçi̇n, Şükrü Beydemi̇r, Olcay Hi̇sar, Ekrem Köksal, Russel J. Reiter
Turkish Journal of Veterinary & Animal Sciences
Effects of melatonin on the levels of antioxidant enzymes including catalase (CAT), peroxidase (POD), glutathione reductase (GRd), and malondialdehyde (MDA), a lipid peroxidation marker, in erythrocytes of rainbow trout (Oncorhynchus mykiss) were investigated. The results showed that melatonin statistically activated the CAT, POD, and GRd activity (P < 0.05). Moreover, MDA levels were significantly decreased as a result of melatonin treatment (P < 0.01).
Estimation Of The Nitrogen-Phosphorus Load Caused By Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Cage-Culture Farms In Kesikköprü Dam Lake: A Comparison Of Pelleted And Extruded Feed, Umut Aşir, Serap Pulatsü
Estimation Of The Nitrogen-Phosphorus Load Caused By Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Cage-Culture Farms In Kesikköprü Dam Lake: A Comparison Of Pelleted And Extruded Feed, Umut Aşir, Serap Pulatsü
Turkish Journal of Veterinary & Animal Sciences
This research was conducted in order to estimate the nitrogen and phosphorus loads released into Kesikköprü Dam Lake between April and July 2006 from 2 different rainbow trout (Oncorhynchus mykiss Walbaum, 1792) cage farms. Both farms had a capacity of about 20 t year^{-1}, and used pelleted and extruded feed. In Kesikköprü Dam Lake the nitrogen load was estimated to be between 56.00 and 62.92 kg t^{-1}of fish produced, and the phosphorus load was estimated to be between 10.66 and 12.17 kg t^{-1}of fish produced in cages in which pelleted feed was used, In cages in which extruded feed was …
Acute Toxicity Of Carbaryl, Methiocarb, And Carbosulfan To The Rainbow Trout (Oncorhynchus Mykiss) And Guppy (Poecilia Reticulata), Muhammet Boran, İlhan Altinok, Erol Çapkin, Hi̇kmet Karaçam, Veysel Bi̇çer
Acute Toxicity Of Carbaryl, Methiocarb, And Carbosulfan To The Rainbow Trout (Oncorhynchus Mykiss) And Guppy (Poecilia Reticulata), Muhammet Boran, İlhan Altinok, Erol Çapkin, Hi̇kmet Karaçam, Veysel Bi̇çer
Turkish Journal of Veterinary & Animal Sciences
The acute toxicity of carbaryl, methiocarb and carbosulfan to juvenile rainbow trout (Oncorhynchus mykiss; 1.92 ± 0.5 g) and guppies (Poecilia reticulata; 0.45 ± 0.04 g) was evaluated in 96-h toxicity tests under static conditions. Concentrations in the toxicity test ranged from 0.85 to 8.5 mg/l for carbaryl, from 0.7 to 28.0 mg/l for methiocarb, and from 0.031 to 12.5 mg/l for carbosulfan. Carbaryl and methiocarb were more toxic to rainbow trout than to guppies. However, compared with rainbow trout, guppies were more sensitive to carbosulfan. The incidence of mortality in fish increased significantly (P < 0.05) with increasing pesticide concentrations. The time required to kill 50% (LT_{50}) of the rainbow trout at the lowest concentrations of carbaryl, methiocarb, and carbosulfan was 51 h 12 min, 74 h 35 min, and 107 h 57 min, respectively. As insecticide concentrations were increased, LT_{50} values decreased (P < 0.05).
Plasma Lysozyme Levels And Secondary Stress Response In Rainbow Trout, Oncorhynchus Mykiss (Walbaum) After Exposure To Leteux-Meyer Mixture, Hi̇jran Yavuzcan Yildiz
Plasma Lysozyme Levels And Secondary Stress Response In Rainbow Trout, Oncorhynchus Mykiss (Walbaum) After Exposure To Leteux-Meyer Mixture, Hi̇jran Yavuzcan Yildiz
Turkish Journal of Veterinary & Animal Sciences
Leteux-Meyer mixture (LMM) contains formalin and malachite green and can be externally applied to fish as an antimicrobial agent. To determine the effects of prophylactic treatment with LMM on plasma lysozyme levels and the secondary stress indices, alterations in plasma glucose, chloride, sodium, potassium and hematocrit were monitored in healthy rainbow trout, Oncorhynchus mykiss W. Fish were i) exposed to 25 ppm Leteux-Meyer mixture for 60 min and ii) the same treatment followed by 60 min recovery in clean freshwater. Treatment with LMM resulted in a decrease in plasma lysozyme values. After a recovery period of 60 min plasma lysozyme …
Effect Of Refrigerated Storage On Fillet Lipid Quality Of Rainbow Trout (Oncorhynchus Mykiss W.) Fed A Diet Containing Different Levels Of Dl A-Tocopherol Acetate, Mustafa Yildiz, Erdal Şener, Hüseyi̇n Gün
Effect Of Refrigerated Storage On Fillet Lipid Quality Of Rainbow Trout (Oncorhynchus Mykiss W.) Fed A Diet Containing Different Levels Of Dl A-Tocopherol Acetate, Mustafa Yildiz, Erdal Şener, Hüseyi̇n Gün
Turkish Journal of Veterinary & Animal Sciences
The effect of refrigerated storage at 1 ± 0.3 ºC on vitamin E level, fatty acid composition and lipid oxidation of fillets was studied in 3 groups of rainbow trout fed diets supplemented with increasing levels (100, 300 and 500 mg kg^{-1} diet, respectively) of \alpha-tocopherol acetate as antioxidant. Fish (initial mean weight 131 ± 1.0 g) were fed experimental diets for 58 days and reached a mean final weight of 299 ± 6.1 g, with growth differences among the 3 experimental groups being insignificant (P > 0.05). Fillet samples of fish were analyzed fresh (on day 0) or after storage …
A Study On The Effects Of Levamisole On The Immune System Of Rainbow Trout (Oncorhynchus Mykiss, Walbaum), Ünal İspi̇r, Mustafa Dörücü
A Study On The Effects Of Levamisole On The Immune System Of Rainbow Trout (Oncorhynchus Mykiss, Walbaum), Ünal İspi̇r, Mustafa Dörücü
Turkish Journal of Veterinary & Animal Sciences
The effects of levamisole on the specific and non-specific immune mechanisms of rainbow trout (Oncorhynchus mykiss, Walbaum) were examined. The weight of the 60 fish used (30 in the control group and 30 in the experimental group) in this study was 99.4-216.0 g. After injecting 5 mg kg-^1 of levamisole intraperitonally, blood was taken from the heart of 30 anesthetized fish and hematocrit, leucocrit, leucocyte level, glass-adherent Nitroblue tetrazolium (NBT) positive cell activation, NBT activities, phagocytic activity, potential killing activities of neutrophyl and monocytes, myeloperoxidase production (MPO), immunoglobulin, lysozyme and ceruloplasmin (Cp) activity were determined on days 3, 7, 10 …
Pathological Findings In Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Experimentally Infected With Yersinia Ruckeri, Hamdi̇ Avci, Serap Bi̇ri̇nci̇oğlu
Pathological Findings In Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Experimentally Infected With Yersinia Ruckeri, Hamdi̇ Avci, Serap Bi̇ri̇nci̇oğlu
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to evaluate the pathological findings in rainbow trout experimentally infected with Yersinia ruckeri. For this purpose, 42 [1 control group (10 fish) and 1 experimental group (32 fish)] of rainbow trout were used. Yersinia ruckeri serotype I (R0072) at a concentration of 3 x 10^6 cfu/ml (0.1 ml per fish) was intraperitoneally injected into the experimental group, whereas the control group was subjected to the same volume of sterile saline. Following the intraperitoneal injection, between 4 and 26 days, fish that died due to natural infection and those killed were necropsied and macroscopic and …
Effect Of Lactobacillus Sakei Lb706 On Behavior Of Listeria Monocytogenes In Vacuum-Packed Rainbow Trout Fillets, Şükri̇ye Aras Hi̇sar, Güzi̇n Kaban, Olcay Hi̇sar, Telat Yanik, Mükerrem Kaya
Effect Of Lactobacillus Sakei Lb706 On Behavior Of Listeria Monocytogenes In Vacuum-Packed Rainbow Trout Fillets, Şükri̇ye Aras Hi̇sar, Güzi̇n Kaban, Olcay Hi̇sar, Telat Yanik, Mükerrem Kaya
Turkish Journal of Veterinary & Animal Sciences
The effect of a bacteriocin-producing strain, Lactobacillus sakei Lb706, on the behavior of Listeria monocytogenes in rainbow trout fillets stored under vacuum at 4 ºC for 14 days and at 10 ºC for 5 days was investigated. At 4 ºC, growth of L. monocytogenes was significantly inhibited (P < 0.05) by L. sakei Lb706 during 10 days of storage while bacteriocin-negative Lb706-B did not affect the growth of L. monocytogenes during 14 days of storage. In the presence of the sakacin A-producing strain of L. sakei (Lb706), the growth of L. monocytogenes was significantly inhibited (P < 0.05) in the first 3 days of storage at 10 ºC, after which its count increased to 10^7 CFU/g. The control group and the group containing L. sakei Lb706-B showed similar growth patterns of L. monocytogenes. Significant increases (P < 0.05) were observed in all groups in terms of psychrotrophic bacteria counts. No significant (P > 0.05) changes in pH values during storage at 4 ºC and 10 ºC were determined. Consequently, the results of the present study showed that L. sakei Lb706 can be used as a protective culture in freshwater reared rainbow trout, especially for preventing possible contaminations of Gram-positive food-borne pathogenic bacteria such as L. …
Effects Of Different Diets On The Growth Performance, Gonad Development And Body Composition At First Sexual Maturity Of Rainbow Trout (Oncorhynchus Mykiss), Devri̇m Memi̇ş, Hüseyi̇n Gün
Effects Of Different Diets On The Growth Performance, Gonad Development And Body Composition At First Sexual Maturity Of Rainbow Trout (Oncorhynchus Mykiss), Devri̇m Memi̇ş, Hüseyi̇n Gün
Turkish Journal of Veterinary & Animal Sciences
Rainbow trout Oncorhynchus mykiss with an initial mean weight of 174 g (1+ year old) were fed on 3 different commercial diets (1 extruded pellet and 2 steam pellet) in the same environmental conditions until their first spawning. Changes in growth performance (weight gain, condition factor, specific growth rate and feed conversion rate), gonadosomatic index (GSI), hepatosomatic index (HSI) and body composition (protein, lipid, ash and dry matter) were investigated. The mean weight gain and condition factor for fish fed the extruded diet was significantly greater than for those fed the steam pellet diets (P < 0.05 ). There were no significant differences in specific growth rate, mean length increments and feed conversion rate among the groups, although the feed conversion rate for the extruded diet was slightly lower than the others. The HSI of the group fed an extruded diet was significantly greater than those of the others ( P < 0.05 ). The GSI values of female and male fish at the end of the study (October) did not differ significantly among the groups. Similarly, diet had no significant effects on the muscle composition of the trial fish, except that the muscle lipid of the group fed the extruded diet was significantly higher than those of the other groups (P < 0.05).
The Evidence For Pain In Fish: The Use Of Morphine As An Analgesic, Lynne U. Sneddon
The Evidence For Pain In Fish: The Use Of Morphine As An Analgesic, Lynne U. Sneddon
Veterinary Science and Medicine Collection
This paper discusses the evidence for pain perception in fish and presents new data on morphine analgesia in fish. Recent anatomical and electrophysiological studies have demonstrated that fish are capable of nociception, the simple detection of a noxious, potentially painful stimulus and the reflex response to this. To prove pain perception, it must be demonstrated that an animal’s behaviour is adversely affected by a potentially painful event and this must not be a reflex response. The present study examined the acute effects of administering a noxious chemical to the lips of rainbow trout (Oncorhynchus mykiss) to assess what changes occurred …
Do Fishes Have Nociceptors? Evidence For The Evolution Of A Vertebrate Sensory System, Lynne U. Sneddon, Victoria A. Braithwaite, Michael J. Gentle
Do Fishes Have Nociceptors? Evidence For The Evolution Of A Vertebrate Sensory System, Lynne U. Sneddon, Victoria A. Braithwaite, Michael J. Gentle
Veterinary Science and Medicine Collection
Nociception is the detection of a noxious tissue-damaging stimulus and is sometimes accompanied by a reflex response such as withdrawal. Pain perception, as distinct from nociception, has been demonstrated in birds and mammals but has not been systematically studied in lower vertebrates. We assessed whether a fish possessed cutaneous nociceptors capable of detecting noxious stimuli and whether its behavior was sufficiently adversely affected by the administration of a noxious stimulus. Electrophysiological recordings from trigeminal nerves identified polymodal nociceptors on the head of the trout with physiological properties similar to those described in higher vertebrates. These receptors responded to mechanical pressure, …
Incubation And Yolk Sac Periods Of Closely Purebred And Reciprocal Hybrids Of Erzurum And Silifke Rainbow Trout (Oncorhynchus Mykiss), N. Mevlüt Aras, Özer Ayik, E. Mahmut Kocaman, Telat Yanik
Incubation And Yolk Sac Periods Of Closely Purebred And Reciprocal Hybrids Of Erzurum And Silifke Rainbow Trout (Oncorhynchus Mykiss), N. Mevlüt Aras, Özer Ayik, E. Mahmut Kocaman, Telat Yanik
Turkish Journal of Veterinary & Animal Sciences
Our aim was to investigate the survival rate at the hatching and yolk sac stage of close-rearing and crossbred rainbow trout population (Erzurum female X Erzurum male - E_F x E_M; Erzurum female X Silifke male - E_F x S_M; Silifke female X Silifke male - S_F x S_M; Silifke female X Erzurum male - S_F x E_M). A total of 32,976 eggs were incubated, 29,012 of which hatched. The survival rate of the larvae was 88%. The insemination rate, brooding yield and hatching rate of E_F x E_M, E_F x S_M, S_F x S_M and S_F x E_M were …
Influence Of Dietary Energy Level On Stomach Emptying And Appetite Revival Rates In Rainbow Trout, Oncorhynchus Mykiss, Ahmet Adem Teki̇nay, Yusuf Güner, Simon John Davies
Influence Of Dietary Energy Level On Stomach Emptying And Appetite Revival Rates In Rainbow Trout, Oncorhynchus Mykiss, Ahmet Adem Teki̇nay, Yusuf Güner, Simon John Davies
Turkish Journal of Veterinary & Animal Sciences
D1, D2 and D3 diets containing 15.5, 12.5 and 9.0 MJ kg^{-1} digestible energy concentrations were offered to rainbow trout (Oncorhynchus mykiss Walbaum, 1792), and the rates of gastric evacuation and feed intake were determined. Gastric evacuation determinations were achieved by slaughtering eight fish every 6 h until no residue was found in the cardiac stomach. Return of appetite experiments were conducted by re-feeding groups of trout every 6 h following the first feeding. The data provided from each process was modelled by regression analysis and compared statistically. Square root equations best explained the gastric evacuation data, whereas first-order models …
The Effect Of Some Immunostimulants On The Non-Specific Immune System Of Rainbow Trout (Oncorhynchus Mykiss, Walbaum), Süheyla Karataş Düğenci̇, Akin Candan
The Effect Of Some Immunostimulants On The Non-Specific Immune System Of Rainbow Trout (Oncorhynchus Mykiss, Walbaum), Süheyla Karataş Düğenci̇, Akin Candan
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to determine the effect on non-specific defence mechanisms in rainbow trout (Oncorhynchus mykiss) fed diets containing different doses of \beta-glucan (MacroGard), Schizosaccharomyces pombe and S. pombe P450. Over a period of 3 weeks, fish were given 0.1% and 1% MacroGard, 0.1% and 1% S. pombe, 0.1% and 1 % S. pombe P450 in their food. Then phagocytosis, intracellular and extracellular respiratory burst activity, total protein, and specific growth ratio and condition factor values were determined. After feeding for 3 weeks with three different immunostimulants, extracellular and intracellular respiratory burst and phagocytic activity were significantly …
The Effect Of Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Cage Culture On Benthic Macrofauna In Kesikköprü Dam Lake*, İlknur Karaca, Serap Pulatsü
The Effect Of Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Cage Culture On Benthic Macrofauna In Kesikköprü Dam Lake*, İlknur Karaca, Serap Pulatsü
Turkish Journal of Veterinary & Animal Sciences
The aim of this research was to determine the effect of a cage farm with a capacity of about 55 t on the benthic macrofauna in Kesikköprü Dam Lake. At 3 stations (the cage and 15 m and 60 m from the cage) selected for this purpose the abundance and composition of benthic macrofauna were determined for 11 months. The abundance of benthic macrofauna (individuals/m^2) between the stations was statistically significant (P < 0.05). The abundance of benthic macrofauna was higher at the cage station than at the other 2 stations, except in April and November. During the research period the lowest number of individuals (937 individuals/m^2) was found at the second station 15 m from the cage in February; and the highest number (14,091 individuals/m^2) was determined at the cage station in December. Members of the class Pelecypoda were found at all 3 stations. Dreissena, which is a member of the class Pelecypoda, was the most dominant benthic organism (54%), followed by Chrinomus (30%) and Tubifex (11%). At the cage station, while members of the class Pelecypoda were found, no members of the classes Insecta, Oligocheta or Crustacea were found. The highest number of benthic macrofauna genera (7) was found at the station 60 m from the cage in April and November. The lowest number of genera (1) was found at the cage station in July. The results of this study in Kesikköprü Dam Lake reveal that the cage culture has a localizing effect on the abundance and composition of benthic macrofauna.
The Effect Of Age On Spermatological Properties In Rainbow Trout (Oncorhynchus Mykiss W., 1792), Necmetti̇n Teki̇n, Selçuk Seçer, Ergun Akçay, Yusuf Bozkurt, Sezer Kayam
The Effect Of Age On Spermatological Properties In Rainbow Trout (Oncorhynchus Mykiss W., 1792), Necmetti̇n Teki̇n, Selçuk Seçer, Ergun Akçay, Yusuf Bozkurt, Sezer Kayam
Turkish Journal of Veterinary & Animal Sciences
At the end of the spawning season, semen was collected without anesthesia by abdominal massage from 37 rainbow trout according to different age groups. In collected semens, color, volume, motility, activity time (duration of motility), concentration, total spermatozoa and pH were recorded. Furthermore, body weight and body length were measured and correlations beetween spermatological properties and these parameters were assessed. In the 1-2 years age group, volume (ml), motility (%), activity time (s), concentration (x 10^9 sp/ml), total spermatozoa (per ejaculate) and pH were 9.7, 81.0, 79.0, 8.97, 87.0 and 7.20 respectively; in the 2-3 years age group, these values …
Pharmacokinetics Of Oxytetracycline In Rainbow Trout (Oncorhynchus Mykiss) Following Administration Of Medicated Feed, İdri̇s Türel, Gürdal Dağoğlu, Orhan Yilmaz, Ertuğrul Kankaya, Fazil Şen
Pharmacokinetics Of Oxytetracycline In Rainbow Trout (Oncorhynchus Mykiss) Following Administration Of Medicated Feed, İdri̇s Türel, Gürdal Dağoğlu, Orhan Yilmaz, Ertuğrul Kankaya, Fazil Şen
Turkish Journal of Veterinary & Animal Sciences
The pharmacokinetics of oxytetracycline (OTC) were investigated in rainbow trout in freshwater at 10.5 ^oC. A group of 70 fish received OTC, an intravascular injection (i.v.) of 5 mg/kg body weight. Another group of 105 fish were fed medicated feed containing a dose of 100 mg/kg body weight. OTC plasma concentrations were determined by high performance liquid chromatography. The pharmacokinetic parameters were described by a two-compartment open model giving distribution half-lives of 0.907 h and 16.058 h, and elimination half-lives of 33.5 h and 27 h for i.v. and oral administration of OTC, respectively. After i.v. administration of OTC, other …
The Characterization Of Protein Profiles Of The Aeromonas Hydrophila And A. Caviae Strains Isolated From Gull And Rainbow Trout Feces By Sds-Page, Hani̇fi̇ Körkoca, Banur Boynukara
The Characterization Of Protein Profiles Of The Aeromonas Hydrophila And A. Caviae Strains Isolated From Gull And Rainbow Trout Feces By Sds-Page, Hani̇fi̇ Körkoca, Banur Boynukara
Turkish Journal of Veterinary & Animal Sciences
Ten motile Aeromonads, including one Aeromonas hydrophila ATCC 7512, were used. Of the strains, five were isolated from gulls (one A. hydrophila strain and four A. caviae strains) and four from rainbow trout (three A. hydrophila strains and one A. caviae strain). Whole cell protein profiles of these strains were analyzed by SDS-PAGE. Forty-five pairs were formed in comparing the protein profiles of each strain. Of the pairs, 17 (37.8%) were different, 18 (40%) were unclear and 10 (22.2%) were identical. When the strains belonging to the same species were compared within themselves, four A. caviae strains were found to …
Alterations In Hematological Parameters Of Rainbow Trout (Oncorhynchus Mykiss) Exposed To Mancozeb, Muhammed Atamanalp, Telat Yanik
Alterations In Hematological Parameters Of Rainbow Trout (Oncorhynchus Mykiss) Exposed To Mancozeb, Muhammed Atamanalp, Telat Yanik
Turkish Journal of Veterinary & Animal Sciences
Rainbow trout reared in fresh water were exposed to a sublethal concentration of mancozeb (1/2 of LC_{50} = 1.1 mg/l) at 24 h intervals, for 3 weeks in tanks containing 780 l water under natural light conditions with a constant flow (1.5 l min^{-1}) of aerated dechlorinated tap water at 9-11 °C and with no recirculation. Approximately 2 cc venous blood was drawn from each subject (after weekly exposure) for the determination of hematological parameters, using heparin as an anticoagulant. Hematological parameters were investigated weekly. The findings of this study showed that mancozeb had some effect on the hematological parameters …
Detection Of Chromosomal Polymorphisms In Rainbow Trout (Oncorhynchus Mykiss) Cultured In Commercial Farms In Northeast Black Sea Region Of Turkey, Mehmet Ulupinar, İbrahi̇m Okumuş
Detection Of Chromosomal Polymorphisms In Rainbow Trout (Oncorhynchus Mykiss) Cultured In Commercial Farms In Northeast Black Sea Region Of Turkey, Mehmet Ulupinar, İbrahi̇m Okumuş
Turkish Journal of Veterinary & Animal Sciences
In this study, the population variability in chromosome numbers of rainbow trout (Oncorhynchus mykiss) cultured in 10 farms in the Northeast Black Sea Region of Turkey is examined. From the analysis of 468 anterior kidney tissue cells from 118 specimens, 7 distinct diploid numbers, namely 2n=58, 2n=59, 2n=60, 2n=61, 2n=62, 2n=63 and 2n=64, were found. The most frequent karyotypes with proportions of 25.2% and 24.8% were 2n=60 and 2n=62 respectively. Extensive Robertsonian polymorphisms were determined. According to the polymorphism results, it was concluded that the strains in these farms probably originated from European culture populations and the need to repopulate …
Determination Of The Shelf-Life Of Stuffed Rainbow Trout During Cold Storage, Taçnur Baygar, Nuray Erkan, Sühendan Mol, Özkan Özden, Candan Varlik
Determination Of The Shelf-Life Of Stuffed Rainbow Trout During Cold Storage, Taçnur Baygar, Nuray Erkan, Sühendan Mol, Özkan Özden, Candan Varlik
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to determine the shelf-life of stuffed Rainbow trout during cold storage. The fish were placed on polystyrene plates, wrapped in aluminium foil and stored in the refrigerator. Sensory, pH and Total Volatile Basic Nitrogen (TVB-N) analyses were carried out during the storage. The shelf-life of stuffed rainbow trout during cold storage was determined to be 5 days.
The Effects Of Cypermethrin (A Synthetic Pyrethroid) On Some Biochemical Parameters (Ca, P, Na And Tp) Of Rainbow Trout (Oncorhynchus Mykiss), Muhammed Atamanalp, Mevlüt Sai̇t Keleş, H. İbrahi̇m Hali̇loğlu, M. Sitki Aras
The Effects Of Cypermethrin (A Synthetic Pyrethroid) On Some Biochemical Parameters (Ca, P, Na And Tp) Of Rainbow Trout (Oncorhynchus Mykiss), Muhammed Atamanalp, Mevlüt Sai̇t Keleş, H. İbrahi̇m Hali̇loğlu, M. Sitki Aras
Turkish Journal of Veterinary & Animal Sciences
Fish were exposed to three different sublethal doses in order to determine the effects of Cypermethrin on some biochemical parameters (Ca-Calcium, P-Phosphorus, Na-Sodium and TP-Total Protein) of rainbow trout (Oncorhynchus mykiss). After 15 days exposure, Ca and P decreased, while TP and Na took various values depending on the doses of synthetic pyrethroid.
Determination Of Antibody Production By Ifat And Elisa In Rainbow Trout (Oncorhynchus Mykiss) Immunized By Yersinia Ruckeri Bacterin, Ayşegül Kubi̇lay, Gülşen Ti̇mur
Determination Of Antibody Production By Ifat And Elisa In Rainbow Trout (Oncorhynchus Mykiss) Immunized By Yersinia Ruckeri Bacterin, Ayşegül Kubi̇lay, Gülşen Ti̇mur
Turkish Journal of Veterinary & Animal Sciences
In this study, the induced antibody level of rainbow trout immunized by Yersinia ruckeri bacterin was determined using two serological techniques, namely, indirect fluorescent antibody (IFAT) and enzyme-linked immunosorbent assay (ELISA). The induced humoral antibody levels were studied after intraperitonal injection of Yersinia ruckeri bacterin inoculates containing Freund's incomplete adjuvant or PBS in rainbow trout during the experimental period of 20 weeks. The control and experimental groups each contained 20 fish. The group which was immunized by the PBS containing bacterin inoculate received a booster injection. Experiments were carried out in 11-12°C water. Low antibodies titres were detected by ELISA …