scholarly journals Temporal Variations of Condition Factor and Relative Weight For Mystus Gulio (Hamilton, 1822) From the Coastal Water in Bangladesh

2021 ◽  
pp. 111-122
Author(s):  
O Rahman ◽  
MY Hossain ◽  
M Ashekur Rahman ◽  
MA Islam ◽  
M Ataur Rahman ◽  
...  
Keyword(s):  
South Asian ◽  
Condition Factor ◽  
Relative Weight ◽  
Temporal Variations ◽  
Point Of View ◽  
The Body ◽  
Suitable Habitat ◽  
Significant Difference ◽  
Fish Samples ◽  
Food Fish

The long whiskers catfish, Mystus gulio (Hamilton, 1822), is a valuable, delicious food fish in coastal areas of Bangladesh. It is found in fresh and brackish water of South Asian region. The present study illustrates the temporal variation of condition factor (KF) and prey-predator through relative weight (WR) along with length-weight relation (LWR) of M. gulio in the Maloncho River at southern Bangladesh. There were a total of 1200 individuals collected between January-December 2017 and October 2019 to June 2020. Different traditional gears (such as cast net, seine net, square lift net) were used for collecting the fish samples. There were 35% males and 65% females. The total length of fish ranged 7.8-18.3 cm for males and 9.3-22.1 cm for females. The body weight ranged 8.80–72.34 g for males and 8.09-128.82 g for females. LWR was significant with r2 value >0.950. The calculated co-efficient (b) were negative allometric growth in male and female (b<3.0, p<0.001). The KF indicated the best condition of this species. WR revealed no significant difference from 100 for both sex (p = 0.441) and females (p = 0.221), indicating a suitable habitat for growth. From conservation point of view, the findings of this present study on M. gulio will be helpful in Bangladesh (Maloncho River) and neighboring countries. J. Bio-Sci. 29(1): 111-122, 2021 (June)

scholarly journals The occurrence of Contracaecum sp. larvae (Nematoda : Anisakidae) in the catfishClarias gariepinus (Burchell) from Lake Chivero, Zimbabwe

2004 ◽  
Vol 71 (1) ◽  
Author(s):  
M. Barson
Keyword(s):  
Significant Relationship ◽  
Condition Factor ◽  
Clarias Gariepinus ◽  
Parasite Prevalence ◽  
Body Cavity ◽  
The Body ◽  
Nematode Parasites ◽  
Significant Difference ◽  
Third Stage ◽  
Males And Females

Clarias gariepinus were collected from Lake Chivero, Zimbabwe, and examined for nematode parasites from November 2000 to May 2002. Of the 202 specimens collected, 42.6 % were infected with third-stage larvae of Contracaecum sp. in the body cavity. The intensity of the infection was 1-7 worms per fish (mean intensity = 2.2). Seasonal variation in the prevalence of the parasite was not obvious and there was no significant difference in the prevalence of infection between males and females (c2 = 2.228; P > 0.05). No significant relationship between host size and prevalence was established. There was also no significant relationship between intensity and the body condition factor (r = 0.11; P > 0.05). The low parasite prevalence may have been caused by the disruption of the infection cycle since piscivorous birds, which are the final hosts of the parasite, do not feed on C. gariepinus in Lake Chivero.

scholarly journals Length-Weight Relationships and Condition Factors of the Naleh Fish, Barbonymus gonionotus (Pisces, Cyprinidae) Harvested from Nagan Raya Waters, Indonesia

2019 ◽  
Vol 53 (1) ◽  
pp. 75-82 ◽  
Author(s):  
A. S. Batubara ◽  
Z. A. Muchlisin ◽  
D. Efizon ◽  
R. Elvyra ◽  
M. Irham
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Growth Parameters ◽  
Good Condition ◽  
Relative Weight ◽  
Stable Condition ◽  
B Value ◽  
Food Sources ◽  
Survey Method ◽  
Fish Samples

Abstract The objective of the present study was to examine the growth pattern and condition factors of the naleh fish, Barbonymus gonionotus Bleeker, 1849 in Nagan River, Nagan Raya District, Aceh Province, Indonesia. The sampling was conducted for 12 months from January 2016 to December 2016 using the explorative survey method. The sampling locations were determined based on the information given by local fishermen. A total of 761 fish samples were collected during the study. The Linear Allometric Model (LAM), Fulton’s and Relative Weight conditions factors were utilized to analyze the length-weight relationship and condition factor of the fish using growth parameters. The results showed that the highest coefficient of b was recorded in December, where the b value of males were 3.82 and 4.23 for the females with the average b value of males and females were 2.92 indicating an isometric growth pattern. The average Fulton’s condition factor (K) was 2.28 and the average Relative weight (Wr) condition factor was 100.59. It is concluded that fish had the isometric growth pattern and based on K and Wr value, the result implies that the waters are still in a good condition. Furthermore, the availability of food sources, low competitors, and low predators indicate that the aquatic environment is in a stable condition.

scholarly journals Aspects of the Population biology of Common Carp, Cyprinus carpio (Linnaeus, 1758) In Lake Naivasha, Kenya

2020 ◽  
Author(s):  
Eunice Mutethya ◽  
Edwine Yongo ◽  
Cishahayo Laurent ◽  
Edna Waithaka ◽  
Evans Lomodei
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Condition Factor ◽  
Lake Naivasha ◽  
Common Carp Cyprinus Carpio ◽  
Significant Difference ◽  
Fish Samples ◽  
Carp Cyprinus Carpio ◽  
The Mean ◽  
First Maturity

The Common carp, Cyprinus carpio is an exotic fish in Lake Naivasha. It is one of the commercially important species in the lake. This study investigated on its biology and population parameters during 2017. Fish samples (433) were caught using gillnets of mesh-sizes 2-5 inches. Length of fish ranged from 12.0 to 69.0 cm TL, and weighed between 32 and 6840 g. The overall population sex ratio was 1.66: 1.0 (male: female). The mean length of females was 34.8 cm and males 32.1 cm. The length at first maturity was calculated at 54.0 and 49.0 cm for females and males, respectively. The mean condition factor for all fish was 1.05. The peak condition values were recorded during April (1.35), September (1.59) and October (1.80). There was a significant difference in mean condition factor within the size classes highest (1.38) and lowest (0.93) values recorded in class 56-60 and 26-30, respectively. The overall asymptotic length (L∞) was 73.5 cm and growth curvature (K) 1.05 yr-1 with growth performance index (Ф) of 3.72. The total (Z), natural (M), fishing (F) mortality coefficients 2.85, 1.34 and 1.78 yr-1, respectively. The exploitation rate (E) of 0.57 was higher than optimum sustainable yield (E0.5) of 0.32, but not different from maximum sustainable yields (Emax) 0.54 and economic yield (E0.1) 0.46. The length at first capture (LC50) was lower than length at first maturity (LM50), suggesting capture of immature fish. This study provides parameters of fish biology and population often useful in fisheries management.

scholarly journals Relative condition factor: Le Cren's legacy for fisheries science

2020 ◽  
Vol 32 ◽  
Author(s):  
Éder André Gubiani ◽  
Renata Ruaro ◽  
Vinícius Ricardo Ribeiro ◽  
Úrsula Morgana Gomes de Santa Fé
Keyword(s):  
Body Condition ◽  
Condition Factor ◽  
Relative Weight ◽  
Well Being ◽  
The Body ◽  
Scientometric Analysis ◽  
Aquatic Environments ◽  
Relative Condition Factor ◽  
Length Relationship ◽  
Thomson Reuters

Abstract: Aim In this paper we present a scientometric analysis aimed at to assess and quantify the contribution of Le Cren’s condition factor and the main ideas advanced by ‘Le Cren, 1951’ to studies on the health of individuals or populations in aquatic environments. Specifically, we addressed the following questions: (i) what are the temporal and spatial citation trends of ‘Le Cren, 1951’?; (ii) Which journals cited ‘Le Cren, 1951’ most frequently?; (iii) In which types of aquatic environments and organisms have Le Cren’s condition factor been most commonly applied?; (iv) Which of the main applications addressed in ‘Le Cren, 1951’ have been most frequently used by fisheries scientists?; (v) Which of the methods (i.e., Quételet’s index or body mass index, Fulton’s condition factor, Le Cren’s condition factor, relative weight, residual index and scaled mass index) used to estimate condition factor identified in the papers that cited ‘Le Cren, 1951’ have been most frequently used? In addition, the main criticisms of the use of the relative condition factor are discussed. Methods We carried out a scientometric analysis on the papers published from 1951 to December 2015 that cited Le Cren’s article. The papers were obtained from the Thomson Reuters database (ISI Web of Knowledge, apps.isiknowledge.com) in May 2016. Results In total, 1128 papers were assessed. The number of citations increased significantly over time. Most citations occurred in two journals (Journal of Fish Biology and Journal of Applied Ichthyology). Most of papers were carried out in marine environments. In addition, we show that Le Cren's paper has been cited mainly in articles that estimate the condition factor or the weight-length relationship of populations. Finally, we emphasize that the relative condition factor proposed by Le Cren in 1951 is still the main method used to estimate the body condition of an individual or population. Conclusions Le Cren's significant contribution to animal well-being is undeniable, and we emphasize that among the methods identified in the papers that cited ‘Le Cren, 1951’ that estimated body condition, the relative condition factor proposed by Le Cren in 1951 is still the most commonly used method.

scholarly journals Length-weight relationships and condition factors of the three dominant species of marine fishes caught by traditional beach trawl in Ulelhee Bay, Banda Aceh City, Indonesia

2017 ◽  
Vol 75 (4) ◽  
pp. 104-112 ◽  
Author(s):  
Zainal A. Muchlisin ◽  
Vera Fransiska ◽  
Abdullah A. Muhammadar ◽  
Muhammad Fauzi ◽  
Agung S. Batubara
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Relative Weight ◽  
Allometric Growth ◽  
Allometric Model ◽  
K Value ◽  
Siganus Canaliculatus ◽  
Fish Samples ◽  
Weight Condition ◽  
Banda Aceh

AbstractThe objective of the present study was to examine the length-weight relationships and condition factors of snapperLutjanus russellii, ponyfishAurigequula fasciataand white-spotted spinefootSiganus canaliculatusharvested from Ulelhee Bay, Banda Aceh City, Indonesia. These species are the predominant fishes caught by traditional beach trawl in Ulelhee Bay, Banda Aceh City, Indonesia. The sampling was conducted for three months from April to June 2015 at one-week interval. A total of 900 fish samples (300 individuals for each species) were measured for the total length and body weight. The length-weight relationships were calculated using Linear Allometric Model (LAM), while the relative weights (Wr) and Fulton’s condition (K) factors were calculated to assess the condition of the fish samples. The results showed that thebvalue of 3.04 in snapper indicates isometric growth pattern, while ponyfish and white-spotted spinefoot fish had the b values of 1.41 and 1.75, respectively, and these species display an allometric growth pattern. The average Fulton’s condition factor (K) of snapper was 3.01 for male and 2.49 for female; female ponyfish has the K value of 2.92 and 2.92 for male. In addition, the average K value of white-spotted spinefoot was 2.61 and 2.59 for female and male, respectively. The relative weight condition factor ranges from 58.73 to 166.09 for snapper, from 70.55 to 129.65 for ponyfish, and from 71.63 to 133.53 for white-spotted spinefoot. In general, the relative weight condition factors tendedto be 100. It is concluded that snapper has isometric growth pattern, while ponyfish and white-spotted spinefoot display the negative allometric growth pattern. The condition factors are in excellent condition and indicate a balance of prey and predator.

scholarly journals Fish Assemblage Structure and Environmental Correlates in Nepal’s West Rapti River, Banke

Our Nature ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 28-37
Author(s):  
Sujata Chaudhary ◽  
Jash Hang Limbu ◽  
Suren Subba ◽  
Jeevan Kumar Gurung ◽  
Naresh Pandey ◽  
...  
Keyword(s):  
Fish Assemblage ◽  
Fish Assemblages ◽  
Mesh Size ◽  
Temporal Variations ◽  
Assemblage Structure ◽  
Spatial And Temporal Variations ◽  
Fish Assemblage Structure ◽  
Environmental Correlates ◽  
Significant Difference ◽  
Fish Samples

The spatial and temporal variations of fish assemblages in rivers and streams of Nepal are poorly understood. So, the present study aimed to explore the spatial and temporal variations of fish assemblage structure in Nepal’s West Rapti River. The data were collected during autumn, winter and spring seasons, from October 2018 to April 2019. Fish samples were collected using cast net of 12 mm mesh size. A total of 28 species belonging to 7 orders, 10 families and 19 genera were recorded during the study. The analysis of similarity (ANOSIM) showed no significant difference among the stations and seasons. Based on cluster analysis, two major clusters were observed. The similarity percentage (SIMPER) analysis delineated that Cabdio morar (C14, 13.63%), Barilius bendelensis (C11, 10.32%), Gogangra viridescens (C22, 7.85%), Salmostoma phulo (C17, 7.74%), Labeo gonius (C5, 7.53%), Gagata cenia (C23, 6.45%), Garra gotyla (C6, 5.87%) and Labeo dyocelius (C2, 5.62%) were the most contributing species. The Canonical Correspondence Analysis (CCA) distinctly showed that the environmental variables dissolved oxygen, pH, carbon-dioxide, and water temperature play an essential role in shaping the fish assemblage structure of West Rapti River.

scholarly journals Length-Weight Relationship, Condition Factor and Feeding Habit of Fishes from Mangrove of Santubong Estuary, Sarawak, Malaysia

2021 ◽  
Vol 11 (2) ◽  
pp. 10-18
Author(s):  
Farah Akmal Idrus ◽  
Fazimah Aziz ◽  
Adriana Christopher Lee
Keyword(s):  
Condition Factor ◽  
Feeding Habits ◽  
Monsoon Season ◽  
B Value ◽  
Feeding Habit ◽  
Food Items ◽  
Weight Relationship ◽  
Significant Difference ◽  
Fish Samples ◽  
Study Species

Length-weight relationship (LWR), condition factor (K) and feeding habits of Coilia dussumieri, Nemapteryx nenga and Nibea soldado from Santubong Estuary, Sarawak, Malaysia were reported in the present study. The sampling was conducted during the non-monsoon season and monsoon season from April to November 2017 at Buntal, Penambir and Demak rivers using three-layered gillnets. A total of 182 fish samples were caught and measured for the total length and body weight. Then, the data were analysed by the equations for LWR and K. The feeding behaviour analysis was carried out using Relative Gut Index (RGI) and Frequency of Food Occurrence method. The log-transformed regression showed that most of the fishes exhibited negative allometric. K showed a significant difference between seasons. The RGI values of the fishes showed that they were carnivorous. The highest frequency of food occurrence in both seasons was gastropods (94-95 %) and the food items were found to be more variable during monsoon season (gastropods insect, worms, fish, asteroidea, phytoplankton and bivalve). The b value is an exponent to measure the growth pattern of fish and in this study, the b values were in the expected range of 2.5-3.5 and not affected by seasonal variation. The K values suggesting that most of the species were surviving well in the river and was influenced by seasonal change. The RGI and frequency of food occurrence showed that all fish in this study species were carnivorous with more variability in food was observed during the monsoon season. The data of this study are important for a sustainable fisheries management in this area.

scholarly journals Acute and Chronic Toxicity Studies of Ethanol Leaf Extract of Merremia Tridentata (Linn) Hallier F.

2021 ◽  
Vol 2 (3) ◽  
pp. 14-20
Author(s):  
Olubodun A. Adebiyi ◽  
Danladi A. Ameh ◽  
Elewechi Onyike ◽  
Dorcas B. James
Keyword(s):  
Body Weight ◽  
Leaf Extract ◽  
Chronic Toxicity ◽  
Relative Weight ◽  
The Body ◽  
Phytochemical Screening ◽  
Acute And Chronic Toxicity ◽  
Significant Difference ◽  
Serum Biochemical ◽  
Body Weight Dose

The acute and chronic toxicity evaluation of Ethanol leaf extract of Merremia tridentata (Linn) Halier F. (MTELE) was carried out on albino wistar rats. Phytochemical screening and acute toxicity profile of the extract were determined using standard methods. The animals were assigned into groups and administered varying doses of MTELE (100, 200, 400 mg/kg body weight and 0.2 ml of distilled water) for a period of hundred days (fourteen weeks). The body weight, relative organ weight, haematology, serum biochemical indices and histopathological studies of the liver, kidney, spleen, heart, and lungs were appropriately carried out to determine propensity of possible toxicity. Phytochemical screening revealed the presence of alkaloids, tannins, cardiac glycosides, saponins, steroids, triterpenes, flavonoids while anthraquinone and cyanogenic glycosides were absent. The median lethal dose LD50 was estimated as 2200 mg/kg body weight. There was significant (p<0.05) reduction in the percentage change in body weight of rats administered 200 and 400 mg/kg/day dose of the extract for 100days when compared to the control group. Moreover, there was a significant (p<0.05) reduction in the relative weight of the spleen of rats and significant (p<0.05) increase in the relative weight of the liver, kidney, heart and lungs of rats administered 400 mg/kg/day dose. All serum biochemical parameters studied showed significant (p<0.05) increase in group administered 400 mg/kg body weight dose while alkaline phosphatase, aspartate amino transferase, creatine kinase, lactate dehydrogesase and potassium ion showed significant increase (p<0.05) in the group administered 200 mg/kg/day. There is no significant change in hematological parameters like RBC, hemoglobin, hematocrit, platelets, monocytes, basophils, MCV, MCH, MCHC, in the extract treated animals except the lymphocyte that showed a significant (p<0.05) reduction only in the group treated with 400 mg/kg body weight dose. Administration of MTELE at 200 mg/kg body weight did not occasioned any histo-architectural change in the liver and spleen but caused varying degree of remarkable histological derangement in the other tissues. Furthermore, there were remarkable pathologies in the liver, kidney, spleen, heart and lungs ranging from vascular congestion, haemorrhage, fibrosis, to renal and myocardial damage in the group treated with 400 mg/kg/day dose for hundred days. However, 100 mg/kg body weight dose showed no significant difference (p>0.05) in all the parameters evaluated indicating safety at this dosage. Ethanol leaf extract of Merremia tridentata (Linn) Halier F. (MTELE) may not be safe at chronic administration even at dosage as low as 200 mg/kg body weight. The plant should be cautiously employed to avoid unwarranted complication on long term administration.

scholarly journals Stomach Content, Length-weight Relationship and Condition Factor of Tilapia spp. found in the Sombreiro River across Three Communities in Rivers State, Nigeria

2019 ◽  
pp. 1-14
Author(s):  
E. O. Horsfall ◽  
G. M. Sokari ◽  
M. Moslen ◽  
I. K. E. Ekweozor
Keyword(s):  
Content Analysis ◽  
Stomach Content ◽  
Physicochemical Parameters ◽  
Condition Factor ◽  
Stomach Content Analysis ◽  
Weight Relationship ◽  
Significant Difference ◽  
Fish Samples ◽  
Rivers State ◽  
Sarotherodon Melanotheron

Aim: The present study aims to determine the condition factor incomplete of Tilapia guineensis and Sarotherodon melanotheron in Sombreiro River across Buguma, Abonnema and Degema communities in Rivers State. Study Design: This study employs fieldwork, laboratory experimental design, statistical analysis and interpretation of data. Place and Duration of Study: Live fish samples were caught by fishermen in Buguma, Abonnema and Degema communities in Kalabari kingdom of Rivers State, and were conveyed in a rectangular plastic aquarium containing ice blocks and oxygen bags to the department of Applied and Environmental Biology, Rivers State University. The duration of the study lasted for twelve weeks (65 days). Methodology: One hundred and eighty fish samples give their average weights and lengths were identified. The fish samples were weighed using an electronic weighing balance, the total length and length of intestine were measured with a meter rule (cm), color of fish, spines and rays of fish were also observed. Their stomach contents were analyzed viewing under a microscope. The frequency of occurrence method and the numerical method were used for analyzing the food items. Results: The stomach content analysis indicated that the major food was phytoplankton. The length and weight relationship in the three sampled stations for T. guineensis and Sarotherodon melanotheron showed negative allometric growth, (<3).  The condition factor for all the fish samples was greater than one. The physicochemical parameters showed that there were significant differences in the various physicochemical parameters across the study stations except for turbidity (P=0.744) and salinity (P=0.922), that showed no significant difference across the study stations. Conclusion: The length-weight relationship in fishes can be affected by a number of factors including season, habitat, gonad maturity, sex, diet, stomach fullness, health and differences in length ranges of the specimen caught. The exact relationship between length and weight differs among species of fish according to their inherited body shape, and within a species according to the condition (robustness) of individual fish. The stomach content analysis of the sampled fishes provided a baseline study of food and feeding habits of Tilapia species in the sampled stations.

The influence of osteopathic correction on the rate of various rhythms of the body

2019 ◽  
pp. 64-71 ◽  
Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Age Groups ◽  
Biomechanical Properties ◽  
Dispersion Analysis ◽  
The Body ◽  
Body Tissues ◽  
Age Related ◽  
Significant Difference ◽  
Before And After

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.

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