scholarly journals Estrutura populacional de Callinectes danae (Decapoda, Portunidae) da Lagoa da Conceição, Florianópolis, SC, Brasil

1992 ◽  
Vol 21 ◽  
Author(s):  
José Olinto Branco ◽  
Setuko Masunari

Os seguintes aspectos foram tratados sobre a estrutura populacional do siri azul Callinectes danae da Lagoa da Conceição, SC e área costeira (27°30’30”- 27°37’l5” S e 48°00’00”-48°31'0”W: proporção de sexos, composição de tamanho, flutuação da abundância, distribuição espacial e relação peso/largura da carapaça. Coletas noturnas mensais de janeiro/8S a julho/89 em 10 pontos de coleta resultaram na captura de 613 machos e 511 fêmeas, dos quais foram obtidos dados morfométricos e peso do corpo. A temperatura da água de superfïcie variou de 12,3°C (junho) a 27,8°C (janeiro) e a salinidade média de 26,0 °/oo (fevereiro) a 35,5 °/oo (março), valores típicos de estuários de clima mesotérmico úmido. Os juvenis com 68,15 % predominaram sobre os adultos com 31,85 % . Com exceção de quatro meses, a proporção de sexos foi de 1:1 no decorrer do estudo. A amplitude de variação da largura da carapaça foi de 1,5 a 13,5 cm entre os machos e de 2,0 a 11, cm entre as fêmeas, Maior número de classes de largura da carapaça e maior abundância da população foram observados no subsistema Central, seguido do Sul e Norte; uma relação direta com a proximidade do mar. A forte predominância de fêmeas ovígeras na área costeira indica-a como rota de migração daquelas para o mar, Houve dois picos de abundância no período (fevereiro e setembro) representados pela maior porcentagem de juvenis. A expressão da relação entre o peso do corpo e a largura da carapaça foi de wl= 0,0715, wid 2,91 para machos e wt= 0,0739 . wid 2,8994 para fêmeas, valores próximos aos de C. danae do Rio Itiberê na Baía de Paranaguá. Abstract The following aspects of population strulucture were carried out about Callinectes danae of Conceição Lagoon and seashore area, SC (27°30’30”-27°37'15" S and 48°00’00”-48°30'0"W): sex ratio, size, oviposition, fluctuation of abundance, spacial distribution and body weight/carapace width relationship. A total of 613 males and 511 females were caught at night, monthly, from January 1988 to July 1989 at 10 collection sites. Meristic date and body weíght of all crabs were obtained. The surface water temperature oscillated between 12.3°C (June) to 27.8°C (January) and the mean salinity ranged from 26.0 °/oo (February) to 35.5 °/oo (March), which are typical values for estuaries with mesothermic-humid climate. The juveniles (68.15 %) predominated over adults (31,85 %). The sex ratio was 1:1, except in four months. The width variation of the carapace ranged from 1.5 to 13.5 cm in the males and 2.0 to 11.5 cm in the females. Higher number of carapace width classes and higher populalion abundance were observed in the Central subsystem, followed by South and North: a direct relationship with the sea nearness. The strong predominance of ovigerous females in the seashore area indicates it as migration route of those crabs to the sea. There were two abundance peaks in the study period (February and Septetuber) due lo higher percentage of juveniles. The body weight/carapace width relationship was wt 0.0715, wid 2.9153 to males and wl = 0.0739 . wid 2.8994 to females, values which were near to C.danae of the ltiberê River, Paranaguá Bay. Résumé Les suivants sujets ont été abordés sur la structure de la population de crabes bleus Callinectes danae de la Lagoa da Conceição. SC, et surface côtière (27°30’30”-27°37’15” S et 48°0'0"- 48°30’0” W): proportion de sexes, composilion de tailie, fluctuation d’abondance, distribution spatiale et relation poid/largeur de carapace. À d’échantillonages nocturnes mensuels entre juin de 1988 et juillet de 1989 en dix différent points, ont été capturés 613 mâles et 511 femelles, desqueles on a obtenu des données morphométriques et poid du corps. La temperature de l’eau superficielle a eu une variation entre 12,3°C (juin) et 27,8°C (janvier), et la salinité rnoyenne entre 26,0 °/oo (février) et 35,5 °/oo (mars), qui sont des valeurs typiques d’ástuaires de climat mésothermique humide. Les jeunes ont prédoniiné sur les adultes avec 68,15 % contre 31,85 %, A l’exception de quatre mois, la proportion de sexes a été de 1:1 pendant le développement de cet étude. L’amplitude de variation de largeur de carapace a été de 1,5 à 13,5 cm entre les mâles et de 2,0 à 11,5 cm entre les femelles. Le plus grand nombre de classes de largeur de la carapace et la plus grande abondance de la population on été observés dans le subsystème Central, en se suivant le Sud et le Nord respectivement; une relation directe avec la proximté de la mer. Il y a eu deux pics d’abondance pendant la période d’études (février et septembre) représentés par le plus grand pourcentage de jeunes. L’expression de la relation entre le poid du corps et la largeur de la carapace a été de wt=0,0715 , wid 2,9153 pour les mâles ei wt 0,0739. wid 2,8994 pour les femelles, valeurs proches à celles de Callinectes danae du fleuve Itiberê la baie de Paranaguá.

2021 ◽  
Vol 24 (1) ◽  
pp. 133-140
Author(s):  
Sri Redjeki ◽  
Muhammad Zainuri ◽  
Ita Widowati ◽  
Ambariyanto Ambariyanto ◽  
Rudhi Pribadi ◽  
...  

Blue Swimming Crab (P. pelagicus, Linnaeus, 1758) is the main fisheries product from Betahwalang peoples. Fishing activity of Blue Swimming Crab by the fisherman almost every day in Betahwalang waters. Distribution and body size data of Blue Swimming Crab can be used for sustain management reference. The purpose of this study was to determine distribution pattern and body size of Blue Swimming Crab, started from July to November 2018 in Betahwalang waters, Demak. The data analyze consist of sex ratio, carapace width distribution and relationship between carapace width and body weight. 11790 samples Blue Swimming crab from Betahwalang waters consist of 7070 female crabs and 4720 male crabs. The result showed that sex-ratio between male and female crabs are balanced (1.0:1.37), with the most female crabs found at July and August. Body size distribution of male and female crabs are dominated in class 103-111 mm carapace width. Male and female crabs have a positive allometric on growth parameters, that means growth of the body weight is faster than carapace width. The result showed that Blue Swimming Crab in Betahwalang waters are support for sustainable fisheries. 


2019 ◽  
Vol 15 (02) ◽  
pp. 14-17
Author(s):  
K K Hadiya ◽  
A J Dhami ◽  
D V Chaudhari ◽  
P M Lunagariya

This study was initiated on 24 prepubertal Holstein x Kankrej crossbred heifers of nearly identical age (7-9 months) and body weight (130-140 kg) at University farm to evaluate the effect of high plane of nutrition on blood biochemical and minerals profile and the age at puberty. Twelve heifers were managed under routine farm feeding (control) and the rest 12 under ideal optimum feeding regime (treatment) that included extra 1 kg concentrate, 30 g min mix and ad-lib dry fodder. The body weight and ovarian ultrasonography together with blood sampling was carried out at monthly interval from 10 to 18 months of age to study the ovarian dynamics and blood biochemical changes. High plane of nutrition to growing heifers was beneficial in reducing the age of onset of puberty (by 2-3 months) compared to routine farm fed group. The mean plasma total protein and cholesterol concentrations showed a rising trend with significant variations from 10 to 16 months of age, where it got mostly stabilized indicating adult profile. The activity of enzymes GOT and GPT also rose gradually and significantly from 10 months till 14-15 months of age, and thereafter it remained more or less static till 18 months of age. The levels of both these enzymes were higher, with lower protein and cholesterol, in control than the treatment group from 15-16 months of age onwards. The mean plasma levels of both calcium and phosphorus increased gradually and significantly with advancing age till 16-17 months of age, with little higher values in supplemented than a control group. The plasma levels of zinc, iron, copper, and cobalt also showed rising trend with significant differences between 10th and 12th-14th months of age, and from 15th to 18th months of age the levels were statistically the same in all the groups with slightly higher values in the treatment group.


1971 ◽  
Vol 55 (3) ◽  
pp. 651-665 ◽  
Author(s):  
G. M. HUGHES ◽  
R. GAYMER ◽  
MARGARET MOORE ◽  
A. J. WOAKES

1. The O2 consumption and CO2 release of nine giant tortoises Testudo gigantea (weight range 118 g-35·5 kg) were measured at a temperature of about 25·5°C. Four European tortoises Testudo hermanni (weight range 640 g-2·16 kg) were also used. The mean RQ values obtained were 1·01 for T. gigantea and 0·97 for T. hermanni. These values were not influenced by activity or size. 2. The data was analysed by plotting log/log regression lines relating body weight to O2 consumption. Both maximum and minimum metabolic rates recorded for each individual T. gigantea showed a negative correlation with body weight. For active rates the relation was O2 consumption = 140·8W0·97, whereas for inactive animals O2 consumption = 45·47W0·82. 3. The maximum rates were obtained from animals that were observed to be active in the respirometer and the minimum rates from animals that remained quiet throughout. The scope for activity increased with body size, being 82 ml/kg/h for animals of 100 g and 103 ml/kg/h for 100 kg animals. The corresponding ratio between maximum and minimum rates increases from about 2 to 6 for the same weight range. 4. Values for metabolic rate in T. hermanni seem to be rather lower than in T. gigantea. Analysis of the relative proportion of the shell and other organs indicates that the shell forms about 31% of the body weight in adult T. hermanni but only about 18% in T. gigantea of similar size. The shell is not appreciably heavier in adult T. gigantea (about 20%). 5. Data obtained for inactive animals is in good agreement with results of other workers using lizards and snakes. Previous evidence suggesting that chelonians show no reduction in metabolic rate with increasing size is not considered to conflict with data obtained in the present work.


2016 ◽  
Vol 7 (2) ◽  
pp. 26
Author(s):  
Wanmi Nathaniel ◽  
Onyeanusi I. Barth ◽  
Nzalak J. Oliver ◽  
Aluwong Tanang

<p class="jbls-body"><span lang="EN-GB">A total of one hundred and seventy-three fertilized eggs were used for morphometry, gross and histological studies. At day 4 of incubation, the mean body weight of the helmeted guinea fowl embryo was 0.6401 ± 0.0211 g. It was at day 10 of incubation that there was an increase in the whole body weight of the embryo to be 0.8650 ± 0.676 g. The whole brain weight indicated relative increased at day 4 as compared to that of the whole body weight. Graphically, there were steady increase in the body, brain and optic lobe weights. Histologically, cells and neurones that make up the optic lobe is probably as a result of the migration of immature cells from the ventricular neuroepithelium. </span></p>


Author(s):  
Iyad Ali ◽  
Naser Shraim ◽  
Wafaa’ Atrash ◽  
Aisha Sirafi ◽  
Huda Abadi

Artificial Sweeteners (AS) are synthetic sugar substitutes that have sweetening potency hundreds of times more than the table sugar (sucrose). Artificial sweeteners are regarded as attractive alternatives to sugar as they add no calories to food intake. There are many hypotheses suggesting that AS may enhance appetite and cause weight gain. The aim of this study was to evaluate the effect of AS on food intake, fluid intake and body weight of mice. Acceptable daily intakes of AS solutions were administered orally to different set of mice for four weeks. The body weight, food consumption and fluid intake were measured. At the same time, the effect of Zingiber officinale extracts (natural appetite suppressor), Thymus vulgaris extracts (natural appetite inducer) and cyproheptadine (an appetite stimulant drug) on body weight of mice was evaluated. Artificial sweeteners consumption cause insignificant changes in body weight (p>0.05). However, the mean consumption of food and solutions varies significantly for some groups. The consumption of AS has no significant effect on body weight and may contribute to weight maintenance and energy balance as substitutes to high caloric sugar


1957 ◽  
Vol 8 (1) ◽  
pp. 75 ◽  
Author(s):  
PK Briggs ◽  
MC Franklin ◽  
GL McClymont

Dry adult Merino ewes were fed at daily or weekly intervals on oat grain at levels which provided 4.0, 3.0, or 2.0 lb starch equivalent (S.E.) per sheep per week. The experimental periods were 223, 223, and 181 days respectively. Differences between the mean body weights of the ewes a t the three levels of feeding were highly significant (P < 0.001). Body weight varied only slightly and no losses occurred in ewes fed weekly at the rate of 4.0 lb S.E. per head. Ewes fed daily a t this level had a significantly greater mean body weight (P < 0.001) a t the conclusion of the 223-day experimental period. The addition of a sodium chloride supplement did not improve the body weight or wool production of ewes fed weekly a t the level of 4.0 lb S.E. The mean body weight of ewes fed at the levels of 3.0 or 2.0 lb S.E. per head declined over the first 12 and 18 respectively and thereafter remained relatively constant. There were no significant differences at these levels of feeding between groups fed daily and weekly in respect of body weight, wool production, or survival rates. Ewes fed a t the level of 4.0 lb S.E. grew significantly more wool than those given 3.0 lb S.E. (P < 0.001). Losses were negligible in all groups except those fed a t the level of 2.0 lb S.E. In these groups there were few deaths in the first 16 weeks, but in the subsequent 10 weeks losses totalled 17.1 per cent. Ewes fed a t the level of 2.0 lb S.E. consumed their rations at a significantly slower rate (P < 0.01) than did those fed a t the level of 4.0 lb S.E.


1970 ◽  
Vol 2 (2) ◽  
pp. 121-123 ◽  
Author(s):  
MS Alam ◽  
N Ahmad ◽  
MA Miah ◽  
R Islam

The effect of different levels of supplemented dietary protein on body weight, certain haematological values and meat yield characteristics in 20 "Shaver Star Bro" broilers was studied during the period from 02 March to 12 April 2002. The broilers were randomly assigned to four equal groups (A to D) each consisting of 5 birds. Group A was considered as control, fed only with commercial ration and other three groups were treated with extra dietary protein supplement @ 5%, 10% and 15% as group B, C and D respectively. Increased body weight was recorded in group B and the body weight decreases as the level of protein increased from 5% to 10% and 15% and the decrease was linear. No differences in haematological values were observed among the groups but the TEC varied significantly (p < 0.05). The mean weight of breast meat, drum stick meat varied significantly (p < 0.01). The shank weight varied significantly (p < 0.05) but there was no significant difference among the mean weight of thigh meat and wing meat corresponding to the different levels of supplemented dietary protein. It can be concluded that 5% supplemented dietary protein with commercial ration gives better result in respect to body weight gain, haematological values and meat yield characteristics.Key words: dietary protein; haematological values; meat yield; broiler birdsdoi: 10.3329/bjvm.v2i2.2543Bangl. J. Vet. Med. (2004). 2 (2): 121-123


1994 ◽  
Vol 34 (5) ◽  
pp. 581 ◽  
Author(s):  
JA Archer ◽  
GJ Judson

Young sheep were allocated to 6 treatment groups, each of 8 ewes and 8 wethers. Treatments given were nil, 0.1, or 0.5 mg selenium (Se)/kg body weight as a subcutaneous injection of sodium selenate (Na2SeO4), and 0.8, 1.4, or 2.9 mg Se/kg body weight as a subcutaneous injection of barium selenate (BaSeO4). At 14, 28, 56, and 112 days after treatment, 2 ewes and 2 wethers from each group were slaughtered and samples of blood, liver, kidney, cardiac and skeletal muscle, lymph nodes, and faeces were collected for Se assay. On days 0, 1, 3, 7, 13, 27, and 55 blood and spot faecal samples were taken for Se assay from the 24 sheep selected for slaughter on day 112. In sheep given Na2Se04 there was a rapid but transient increase in the mean Se concentration in tissues, particularly the liver of sheep given the highest dose of Na2SeO4. In these sheep on days 14,28,56, and 112 the respective mean liver concentrations were 169, 62,25, and 6.9 �mol/kg DM: the mean value on day 14 was 15 times the mean value in untreated sheep. In sheep given BaSeO4 there was a gradual increase in mean Se concentration of tissues during the experiment. Faecal Se concentrations increased in sheep given the Se injections. The marked but transient increase in liver Se concentrations in sheep given Na2SeO4 suggests that this organ provides an important protective mechanism against toxicity by readily accumulating and excreting Se into the gut. Our results indicate that the BaSeO4 doses were unlikely to cause Se toxicity in young sheep or result in Se residues in tissues above those recommended for human consumption. The BaSeO4 should be administered subcutaneously in the neck or other sites of the body not sold for human consumption, since deposits of BaSeO4 remain at the site of injection for at least 112 days and may be dangerous if inadvertently consumed.


1976 ◽  
Vol 27 (1) ◽  
pp. 23-32 ◽  
Author(s):  
A. B. M. Mafizul Islam ◽  
W. G. Hill ◽  
R. B. Land

SUMMARYSelection was practised in two replicates for both high and low testis weight in the mouse. Typically 7 males were selected out of 30 recorded for a total of 5 generations. From an initial average of 191 mg the mean divergence between high and low lines reached 112 mg, with a realized heritability of 0·52. The ovulation rate of the lines changed in the same direction as that of selection, the mean divergence was 2·0 eggs in primiparous females in generation 4 and 1·6 in nulliparous females in generation 5. Correlated changes in the body weight of both sexes also occurred but were inadequate to account for the observed change in ovulation rate. The genetic regressions of ovulation rate on testis weight were estimated to be 2·9 and 14 eggs/100 mg in primiparous and nulliparous females, respectively, which, along with data from other experiments, correspond to genetic correlations between testis weight and ovulation rate of 0·50 and 0·25 respectively. There were no correlated changes in litter size. The possibility of using male testis size in breeding programmes to improve female reproductive performance is discussed.


2021 ◽  
Vol 10 (1) ◽  
pp. 1-11
Author(s):  
Palagan Senopati Sewoyo ◽  
Anak Agung Ayu Mirah Adi ◽  
Ida Bagus Oka Winaya

Benzo(a)pyrene (BaP) is one of several examples of polycyclic aromatic hydrocarbons that come from incomplete combustion of organic materials.BaP compound is used in research to induce fibrosarcoma.In general, patients with cancer will experience a reduction in body weight. This study aims to determine the body weight profile, the time it takes to cause fibrosarcoma, and the mortality rate of male Sprague Dawley rats after injection with BaP. In this study, 18 rats were used with two treatments.Rats in treatment 0 (P0) were not treated, while rats in treatment I (PI) were injected with BaP 0.3% in 0.1 mL oleum olivarumten times given gradually at two-day intervals via subcutaneous. There were six and 12 rats, respectively, P0 and PI. BaP solution is prepared by dissolving in oleum olivarum, mixing, and stirring until homogeneous. The rats were weighed at the beginning of the study and then carried out routinely once a weekfor 19 weeks of research. At the beginning of the study, the average body weight of rats at P0 and PI were 121.43 ± 7.04 g and 131.49 ± 16.31 g, respectively. The mean body weight of the rats at P0 and PI from the first week to the 19th were178.53 ± 29.97 g and 159.20 ± 14.24 g, respectively. The time taken to inducefibrosarcoma was 85.5 ± 17.6 days. The mortality rate in treatment P0 was 0% and PI treatment was 8.33%.From the results of this study, it can be concluded that giving BaP significantly reduces the body weight profile of rats and has a mortality rate of 8.33%.


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