scholarly journals Ecology And Food Habits Of Common Skittering Frog, Euphlyctis Cyanophlyctis (Schneider, 1799) In Bangladesh

2015 ◽  
Vol 41 (1) ◽  
pp. 7-17
Author(s):  
Lokman Hossain

The Common Skittering Frog, Euphlyctis cyanophlyctis was observed to inhabit in aquatic and semi-aquatic habitats with sparse vegetation covering cultivated lands, irrigation channels, marshes, ditches, domestic and derelict ponds, pools, puddles, wetlands, low lying areas, water logged areas, along the dikes or roads and towards the nearest sources of water. A total of 75 individuals was collected during the period from July, 2012 to June, 2013 from the village Bara Hazratpur, Mitapukur thana under Rangpur District and their food habits were studied. The average body weight of the frogs was 109.57 ± 23.05g and the average weight of the consumed food by each animal was 5.40 ± 3.65g with a variation between 0.1g and 13.3g which was 4.92% of their body weight. A total of 34 food items was found in the stomachs of 75 common skittering frogs. All the food items found in the stomachs were animal foods. The frogs fed mainly on insects (57.95%) that followed crustacean (13.89%), fishes (10.19), arachnids (9.36%), annelids (6.8%), amphibians (2.24%). The consumption of food varied seasonally, being much less in winter than in summer or rainy season. The percent frequency occurrence of insects in relation to the total number of food items was more or less same in all seasons. Insect food items were under18 families belonging to 10 orders, most of which are harmful to agriculture, gardens and human residences. So, education and awareness have been suggested through printed and electronic media regarding their contribution in maintaining ecological balance and role in ecosystem. The species should be conserved for maintaining natural balance and economy of the country. Asiat. Soc. Bangladesh, Sci. 41(1): 7-17, June 2015

2016 ◽  
Vol 44 (1) ◽  
pp. 153-161 ◽  
Author(s):  
Md Lokman Hossain

Checkered Keelback, Xenochrophis piscator, was found to inhabit aquatic, semi-aquatic, terrestrial and fossorial habitats. The average body weight of Checkered Keelback was 233 ± 107.25 g. The average weight of the consumed food by each animal was 10.28 ± 6.78 g, which was 4.41% of their body weight. A total of 23 food items were found in the stomachs of 40 snakes. All the food items were animal food, but three categories of accidental food items were found in the stomachs. Based on food contents the snake fed mainly on arthropods (56.52%), fish (26.80%) and amphibians (17.39%). The consumption of food varied seasonally, being much less in winter compared to summer and rainy seasons but the per cent frequency of occurrence of insects in relation to the total number of food items was more or less the same in all seasons. Insects belonged to 14 families under seven orders, mostly harmful to agriculture, fish ponds, gardens and human residences.Bangladesh J. Zool. 44(1): 153-161, 2016


2021 ◽  
pp. 40-55
Author(s):  
A. Mruk ◽  
◽  
G. Kucheruk ◽  
L. Galoyan ◽  
N. Mykhailenko ◽  
...  

Purpose. To study the possibility of obtaining highly productive intergeneric salmonid hybrids between rainbow trout and brook trout; brown trout and brook trout; rainbow trout and brown trout, as well as to develop methodological approaches and determine of optimal variants of hybrid crosses. Findings. In order to obtain intergeneric hybrids, we used six variants of hybrid crosses with brood fish of three salmonids belonging to three families (Salmo, Oncorhynhus, Salvelinus). The study used age-4 female rainbow trout with average body weight of 3296.8 g, Fork length was 62.6 cm, and the average working fecundity was 7420 eggs. Age-3 rainbow trout males had an average body weight of 1613 g and an average body length of 49.8 cm; age-3 brown trout females had an average body weight of 453.8 g and average working fecundity of 1540 eggs, and males had an average weight of 458.7 g; age-3 brook trout females had an average weight of 809.7 g and a length of 38.9 cm with working fecundity of 1732 eggs, and age-4 males had an average weight of 1212.8 g and an average body length of 46.0 cm. Twelve variants of fertilization were used: six variants at normal water temperature and six variants after a temperature shock. Under natural conditions, the creation of intergeneric hybrids is almost impossible, except for variants between brown trout and brook trout, which is due to the similarity of their biology. However, the efficiency of this cross is low and economically impractical for fish farmers. When applying the temperature shock during fertilization, hybrids proved to be the most effective, where females were rainbow trout, and males were brook trout and brown trout. The average weight of young-of-the-year intergeneric hybrids was, depending on the species of fish, from 8 to 54 g. The highest results were obtained for the creation of hybrids where following broodstock was used: ♂brook trout Х ♀brown trout; ♂brown trout Х ♀rainbow trout. In these variants of crossbreeding, the survival rate of young-of-the-year during the period of cultivation was 94.8 and 92.8%, respectively. In particular, the above hybrids did not suffer from infectious diseases during the growing period. Originality. New data on the development of methods for obtaining viable offspring of newly created hybrids were obtained, and the optimal variants of crossing between females and males of these salmonids were determined. Practical value. The results can be used for artificial breeding of salmonids in specialized farms that will allow obtaining high quality products and reducing their costs. Key words:rainbow trout, brown trout, brook trout, incubation, free embryos, larvae, fry, young-of-the-year.


2021 ◽  
Vol 44 (3) ◽  
pp. 161-166
Author(s):  
D. O. Odedeyi ◽  
I. M. Odedire

Fecundity study is important in order to evaluate the reproductive potentials of fish species. Thus, fecundity and food habits of Hippopotamyrus ansorgii (H. ansorgii) from Ogbese river were investigated. Total of 32 specimens of H. ansorgii were used. The major fishing method employed for collecting the specimens were cast and gill netting. Fecundity and food habits the fish were studied. The total lengths ranged from 14.6 cm to 22.1cm while the body weights ranged from 30.0 to 91.0 g. The food items found in the examined stomachs were rotifer, algae, insects, crustacean, detritus and plant parts but the major food items based on the ranking index were insects and crustaceans. The sex ratio of H. ansorgii was 1.13: 1 for males: females. The gonadosomatic index showed that H. ansorgii in Ogbese river uses an average of 11.69% of its body weight in egg production. Fecundity ranged from 600 to 7200 eggs with an average of 3231 eggs per female. In conclusion, H. ansorgii in Ogbese river was an omnivore and highly fecund fish.


2016 ◽  
Vol 14 (2) ◽  
pp. 85
Author(s):  
Achmad Gozali Nataamijaya

<p>The Black Kedu fowl, of Kedu origin district of Temanggung Central Java was one of rare types Indonesian local fowl and considered as productive egg layer amongst local fowls. Therefore, they need to be characterized to better utilize their potential to breed commercial stocks.This study was conducted to find out more reliable data on the characteristics and productivity of the fowl. Two hundred and forty day old chicks were raised in 20 brooders sized 1.5 m x 1.2 m x 0.75 m and fed starter diet contained 20% of crude protein and 3100 kcal metabolizable energy/kg until 4 weeks old, thereafter the birds diet contained 18% crude protein and 3000 kcal metabolizable energy/kg until 8 weeks old then 14% crude protein and 2,800 kcal/kg until 20 weeks old and placed at grower house, after week 20 these hens were removed into layer house. At the age of 21 weeks these birds were given layer diet with 16% crude protein and 2800 kcal metabolizable energy/kg of diet. Drinking water was given ad libitum. Results showed that the dominant plumage colour was shiny black either male or female with red comb and wattle, whilst the colour of shank and beak were mostly dark. The average mortality rate at 1st, 2nd and sixth week was 6.07, 2.16, and 0.43% respectively. The average chicks body weight at day one was 28.98 g. At the 1st to 8th week the average body weight was 40.58, 81.25, 123.60, 192.68, 286.02, 380.39, 487.68, and 578.08 g with feed conversion value of 1.02, 2.58, 2.82, 2.91, 2.98, 3.23, 3.86, and 4.42. Some of the hens started laying eggs at 20 weeks old, however most of them started at 22 weeks old when the production rate was 14.9%. Peak production (41.70%) was reached at 38 weeks old, the average egg production during observation period was 32.48% with feed conversion value for egg production around 6.58. These eggs were laid in the morning (54.36%), the rest were laid in the afternoon (45.64%), the color of the eggs were light brown (75.48%) and brown (25.52%). The average weight of egg was 28.64 g at initial laying period, 35.69 g at peak production and 43.33 g at 52 weeks old, the grade/USDA score of inner egg quality was A/4. It was concluded that the Black Kedu fowl has a distinctive appearance and better productivity compared to ordinary local fowl, and hence could be utilized as genetic resources to develop egg type commercial stock.</p><p> </p><p><strong>Abstrak</strong></p><p>Ayam Kedu Hitam, berasal dari Desa Kedu Kabupaten Temanggung Jawa Tengah, adalah salah satu jenis ayam lokal langka dan dikenal sebagai tipe petelur yang cukup produktif. Penelitian bertujuan untuk memperoleh data lengkap karakteristik dan produktivitas ayam Kedu Hitam. Dua ratus empat puluh ekor anak ayam dibesarkan dalam kotak induk buatan berukuran 1,5 m x 1,2 m x 0,75 m dan diberikan pakan starter yang mengandung 20% protein kasar (PK) dan 3100 Kcal/kg energi metabolik (EM) sampai umur 4 minggu, selanjutnya diberikan pakan mengandung 18% PK dan 3000 Kcal/kg EM sampai umur 8 minggu, kemudian pada umur 20 minggu ditempatkan dalam kandang ayam dara serta diberikan pakan dengan 14% PK dan 2800 Kcal/kg EM pada umur 21 minggu ayam dewasa ditempatkan dalam kandang petelur dengan pemberian pakan mengandung 16% PK dan 2800 Kcal/kg EM. Air minum diberikan secara berlebihan. Hasil pengamatan menunjukkan bahwa warna bulu yang dominan adalah hitam berkilauan, baik jantan maupun betina, dengan jengger dan pial berwarna merah, sedangkan sisik kaki dan paruh berwarna gelap kehitaman. Angka kematian pada minggu pertama, kedua, dan keenam 6,07; 2,16; dan 0,43%, rata-rata bobot badan saat menetas 28,98 g, pada minggu pertama sampai minggu ke-8 bobot badan berturut-turut 40,58; 81,25; 123,60; 192,68; 286,02; 380,39; 487,68; dan 578,08 g dengan nilai konversi pakan 1,02; 2,58; 2,82; 2,91; 2,98; 3,23; 3,86; dan 4,42. Ayam betina pada umur 22 minggu telah menghasilkan telur sebanyak 14,9%, puncak produksi (41,70%) pada umur 38 minggu, sedangkan rata-rata produksi telur 32,48% dengan nilai konversi pakan 6,58. Sebanyak 54,36% telur diproduksi pada pagi hari, sedangkan 45,64% pada siang sampai sore hari. Sebagian besar kerabang telur (75,48%) berwarna coklat pucat, sisanya (25,52%) berwarna coklat. Rata-rata bobot telur 28,64 g pada awal masa bertelur, 35,69 g pada puncak produksi, dan 43,33g pada umur 52 minggu, kualitas bagian dalam telur/nilai USDA A/4. Disimpulkan bahwa ayam Kedu Hitam memiliki penampilan yang khas, petelur yang cukup produktif, dan dapat digunakan sebagai sumber daya genetik dalam pembentukan ayam petelur komersial.</p>


1998 ◽  
Vol 49 (7) ◽  
pp. 757 ◽  
Author(s):  
Colin A. Simpfendorfer

Stomachs from 433 specimens of Rhizoprionodon taylori caught by gill-nets and otter trawls in Cleveland Bay, north Queensland, were examined. At least 5.3% of specimens examined had regurgitated. Of the remaining 410 specimens 59.0% had empty stomachs and only 19.3% contained food items identifiable to the family level. The diet comprised mostly small teleosts from the families Leiognathidae, Clupeidae, Teraponidae and Engraulidae. Penaeid prawns and loliginid squid were also important in the diet. Average weight of individual recently ingested food items was 28.5 g, which represented 2.3% of body weight. The high diversity of potential prey groups, high rate of regurgitation, and high proportion of empty stomachs meant that although a large number of specimens were examined the sample size was probably insufficient to provide a thorough analysis of the diet of R. taylori in Cleveland Bay.


1987 ◽  
Vol 52 (2) ◽  
pp. 304-317 ◽  
Author(s):  
Elizabeth J. Reitz ◽  
Irvy R. Quitmyer ◽  
H. Stephen Hale ◽  
Sylvia J. Scudder ◽  
Elizabeth S. Wing

Zooarchaeologists have used several methods to assess the relative dietary contribution of species found at archaeological sites. The most common methods are either based upon the assumption that bone weight is a fixed percentage of total body weight, or require estimating an "average" body size for identified taxa. In fact, the relationship between parameters of bone and body mass is generally allometric and can be described by linear regression. Use of allometric models places original body mass predictions on a more sound biological basis and makes calculations of "average" weight unnecessary. The potential of allometry is discussed and objections addressed with the goal of encouraging others to develop allometric formulae and to use them in their research.


2012 ◽  
Vol 2 (1) ◽  
pp. 21-27
Author(s):  
Yosi Fenita

The objective of the research was to evaluate to effect of feeding mengkudu on performances of broilers. The research design used was completely randomized design. One hundred broilers were distributed into five treatments. The treatments were different levels of mengkudu meal (0, 0.75%, 1.5%, 2.25 % and 3%). The observed measured were feed consumption, average body weight (gain) and feed conversion. Results showed that feeding mengkudu (Morinda Citrifolia L.)  no effect significant (P>0.05) on feed consumption, average body weight and feed conversion.  In conclusion, feeding mengkudu meal up to 3% (in diet) does not negatively affect feed consumption, average body weight, and feed conversion.


Author(s):  
Hubert Dobrowolski ◽  
Dariusz Włodarek

The outbreak of the COVID-19 pandemic caused a number of changes in social life around the world. In response to the growing number of infections, some countries have introduced restrictions that may have resulted in the change of the lifestyle. The aim of our study was to investigate the impact of the lockdown on body weight, physical activity and some eating habits of the society. The survey involving 183 people was conducted using a proprietary questionnaire. The mean age of the study participants was 33 ± 11 and mean height 169 ± 8 cm. An average increase in body weight was observed in 49.18% by 0.63 ± 3.7 kg which was the result of a decrease in physical activity and an increase in food consumption. We also observed a decrease in PAL from 1.64 ± 0.15 to 1.58 ± 0.13 and changes in the amount of food and individual groups of products consumption, including alcohol. Among the study participants who did not lose body mass, there was an average weight gain of 2.25 ± 2.5 kg. In conclusion, an increase of weight was shown in about half of the respondents in the study group which was associated with a decrease in physical activity and an increase in the consumption of total food and high energy density products.


Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1511
Author(s):  
Joseph P. Gulizia ◽  
Kevin M. Downs

Two trials were conducted to determine feed color effects on broiler performance. A completely randomized design was used. Trial 1 included four treatments: control (complete broiler starter diet), red, green, and blue; and Trial 2 included four treatments: control, orange, yellow, and purple. Each trial had 4 treatments with 4 replicates (60 birds/treatment) fed to 240 male Cobb 500 broilers during a 21 d grow out. Data were analyzed using the GLM procedure. In Trial 1, there were no treatment effects on average body weight, body weight gain, and feed consumption (p > 0.05). Adjusted feed conversion for control (1.23) was less than red (1.27; p = 0.001) and green (1.26; p = 0.009), with blue (1.25; p = 0.056) tending to be different during the experimental period. In Trial 2, there were no treatment effects on average body weight, feed consumption, and adjusted feed conversion during this study (p > 0.05). Body weight gain between d 1 to 14 for purple (490.78 g/bird) was more than orange (467 g/bird; p = 0.013) and yellow (461 g/bird; p= 0.004), with control (474 g/bird; p = 0.052) tending to be different. Results indicate that these feed colors had some, albeit limited, influence on broiler performance parameters.


2021 ◽  
Vol 15 (2) ◽  
pp. 83-88
Author(s):  
M. S. Eliseev

Updated ACR recommendations for the treatment of gout concerning lifestyle are discussed. Factors related to a lifestyle, above all food habits, for many years were of leading importance in the treatment of patients with gout, even after application of effective drugs. The authors of the updated ACR recommendations for the first time offered to reconsider the role of environmental factors in the genesis of gout and objectively assess the possibility of its non-drug treatment. On the one hand, regardless of the activity of the disease, the need for restrictions of the alcohol, purine-rich products and fructose-containing beverages, as well as the decrease of body weight in obese patients and vitamin C usage unviability are confirmed. On the other hand, these recommendations are conditional. Their new version of ACR recommendations is significantly different from both its previous version and other international and national recommendations, including recommendations on the diagnosis and treatment of gout used in the Russian Federation.


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