scholarly journals Feeding preference of adult females of ribbonfish Trichiurus lepturus through prey proximate-composition and caloric values

2012 ◽  
Vol 10 (1) ◽  
pp. 197-203 ◽  
Author(s):  
Vanessa Trindade Bittar ◽  
Danielle Rodrigues Awabdi ◽  
William Cristiane Teles Tonini ◽  
Manuel Vazquez Vidal Junior ◽  
Ana Paula Madeira Di Beneditto
Keyword(s):  
Proximate Composition ◽  
Energy Demand ◽  
Feeding Preference ◽  
Food Selectivity ◽  
Southeastern Brazil ◽  
Caloric Content ◽  
Caloric Value ◽  
Adult Females ◽  
Trichiurus Lepturus ◽  
Prey Protein

In the present study we analysed the proximate-composition and caloric values of the preferred prey consumed by ribbonfish, Trichiurus lepturus L. 1758 (adult females), that are distributed in the inner continental shelf from northern Rio de Janeiro State, southeastern Brazil (~22ºS), assessing the potential of nutritional and energetic approach as a tool to understand the feeding selective pattern of this marine top carnivore. The preferred prey of this predator composed of fish co-specifics, Pellona harroweri, Chirocentrodon bleekerianus, Lycengraulis grossidens, Peprilus paru, squid Doryteuthis plei, and shrimp Xiphopenaeus kroyeri were collected from 2007 to 2010 for proximate-composition (water, protein, lipid, ash, and carbohydrate) and caloric value analyses. The correspondence analysis showed that protein is the main component in the prey species (61.32% of variance explained), standing out from the other nutrients. Lipid has the highest percentage related to L. grossidens, ash to X. kroyeri and carbohydrate to D. plei. The strong correlations between protein and caloric value (positive) and lipid and caloric value (negative) indicated that T. lepturus is attending its energy demand through the prey protein content. This work elucidated the feeding preference of adult females of T. lepturus in relation to nutritional and caloric content of their preferred prey. The species showed food selectivity to prey that provide more energy per ingested biomass, so that the feeding events can maximize the predator's caloric gain, which is obtained by a protein-based diet.

Comparison between the diet of two dolphins from south-eastern Brazil: proximate-composition and caloric value of prey species

2009 ◽  
Vol 89 (5) ◽  
pp. 903-905 ◽  
Author(s):  
Ana Paula Madeira Di Beneditto ◽  
Monique Virães Barbosa dos Santos ◽  
Manuel Vazquez Vidal
Keyword(s):  
Proximate Composition ◽  
Prey Species ◽  
South American ◽  
Mineral Contents ◽  
Caloric Value ◽  
Main Prey ◽  
Eastern Brazil ◽  
Trichiurus Lepturus ◽  
Prey Composition ◽  
Gross Energy

A comparison between the diet of the franciscana and the boto-cinza is presented through the proximate-composition and caloric value of their main prey. The fish Stellifer cf. rastrifer, Pellona harroweri, Anchoa filifera, Isopisthus parvippinnis and Trichiurus lepturus and the squids Loligo sanpaulensis and L. plei were analysed for water, protein, lipid and mineral contents and gross energy (GE). The fish are more important in the diet of the boto-cinza and squids are consumed mostly by the franciscana. Loligo sanpaulensis had the higher water content and protein was the largest fraction of the organic matter in all prey species. Squids presented greater GE values than fish. The data on prey composition and energy from this study are the first for these South American dolphins.

Investigating food assimilation in a carnivorous teleost by stable isotopes analysis: the case of ribbonfish off south-east Brazil

2020 ◽  
Vol 100 (3) ◽  
pp. 445-451
Author(s):  
Ana Paula Madeira Di Beneditto ◽  
Pedro Viana Gatts ◽  
Vanessa Trindade Bittar
Keyword(s):  
Stable Isotopes ◽  
Coastal Waters ◽  
Food Sources ◽  
Commercial Fisheries ◽  
Target Species ◽  
Main Food ◽  
Adult Females ◽  
Trichiurus Lepturus ◽  
Credible Intervals ◽  
Food Assimilation

AbstractThis study verifies the food assimilation of a carnivorous teleost in different timescales (weeks vs months) and evaluates how it uses the food sources. The target species is the adult ribbonfish, Trichiurus lepturus, a voracious teleost caught in commercial fisheries off south-east Brazil (21°S–22°S). The isotope models indicated Chirocentrodon bleekerianus as the main food in the ribbonfish diet in the last weeks (liver: 38.5%; 95% credible intervals: 3.4–73.9%) and last months (muscle: 36.2%; 95% credible intervals: 3.4–68.7%). The contribution of other food sources ranges from 10–16% (liver) and from 10–20% (muscle). Food assimilation remains similar at different timescales. The isotope models suggested a strong and long-lasting association of the adult females of ribbonfish with coastal waters along the study area.

Fat levels in a subarctic population of Peromyscus maniculatus

1980 ◽  
Vol 58 (7) ◽  
pp. 1341-1346 ◽  
Author(s):  
Les W. Gyug ◽  
John S. Millar
Keyword(s):  
Peromyscus Maniculatus ◽  
Dry Weight ◽  
Caloric Content ◽  
Adult Males ◽  
Wild Mice ◽  
Ambient Temperatures ◽  
Energy Expenditures ◽  
Fat Reserves ◽  
Energy Demands ◽  
Adult Females

Fat content (FAT), lean dry weight (LDW), and caloric content (KCAL) were examined in a natural subarctic population of Peromyscus maniculatus. FAT was not significantly correlated with size (LDW) of the animal. FAT of adult males was negatively correlated with minimum ambient temperatures and was not correlated with reproductive condition. LDW of adult males did not vary in relation to season. FAT of prebreeding adult females was high and decreased in response to breeding, but LDW increased in response to breeding so that KCAL remained constant. KCAL was low in adult females only after the breeding season. Mice dying in live traps had significantly lower FAT than did any other group of adults indicating that wild mice do not normally deplete their fat reserves. KCAL of postweaning young increased with age due to an increase in LDW but not in FAT. We suggest that fat levels are intrinsically controlled in wild Peromyscus according to the probability of having to make extraordinary energy expenditures and are not simply subject to extrinsic controls through the balance of food availability and energy demands.

scholarly journals Feeding Preference of Cutlassfish (Trichiurus lepturus Linnaeus) in Coastal Waters of Gunungkidul, Yogyakarta

2020 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Desak Putu Raka Paramita ◽  
Trijoko Trijoko
Keyword(s):  
Growth Pattern ◽  
Feeding Preference ◽  
Proximate Analysis ◽  
Food Composition ◽  
Dominant Type ◽  
Cold Temperatures ◽  
Total Percentage ◽  
Trichiurus Lepturus ◽  
Positive Growth ◽  
Low Levels

Research on cutlassfish’s diet has been carried out in several areas, but similar research does not exist or still rarely found in Gunungkidul. The aim of this study is to determine the overall composition of the cutlassfish's food, the most dominant type of food and cutlassfish's growth pattern. Methods including random sampling in the field, measurement of length and weight and identification of food types using stomach analysis method and proximate analysis on both cutlassfish’s muscle and diet. The results of the study then analyzed using the formula by Walpole (1992), length-weight relationship formula according to Le Cren (1951) followed by determining the value of b with the t-test at confidence interval of 96% and condition factor. Food composition and preferences were calculated using numerical and volumetric methods to find the IP (Index of Preponderance) and IRI (Index Relative Importance) values. Composition based on types of food is dominated by fish at 89% with Engraulidae as the main group with total percentage of IP 45.58 and IRI 76.47, respectively. Proximate analysis values indicate low levels of protein (with highest value of 23.82%) and high-moisture content (with highest value of 71.98%) caused by cold temperatures during storage. The regression showed that cutlassfish have an allometric positive growth pattern. The results revealed that the food is sufficient for the growth of cutlassfish (Trichiurus lepturus).

scholarly journals Proximate, Antinutrient and Mineral Contents of Aframomum danielli (Ataiko) Seed

2020 ◽  
pp. 9-18
Author(s):  
Peters Dikioye Emmanuel ◽  
Kojo, Sarah
Keyword(s):  
Proximate Composition ◽  
Atomic Absorption Spectrophotometry ◽  
Crude Fibre ◽  
High Intake ◽  
Mineral Contents ◽  
Caloric Value ◽  
Molar Ratios ◽  
Plant Seeds ◽  
Absorption Spectrophotometry ◽  
Micronutrient Malnutrition

Background: Plant seeds are rich in nutrients and antinutrients which interfere with bioavailability of minerals. Objective: This research was aimed at evaluating the proximate, anti-nutrients and minerals compositions and estimation of relative mineral bioavailability of Aframomum danielli seed (Ataiko). Methods: Proximate composition was assessed by AOAC methods, minerals by atomic absorption spectrophotometry and anti-nutrients by titrimetric methods. Results: Proximate compositions in percentage revealed carbohydrate with (51.95±0.15), crude fibre (16.00±0.10) and fat (2.35±0.15) was least. Caloric value (kcal 100 g) was 286.55±2.75 Phytate (1.98±0.03%) was higher than oxalate (0.06±0.00%). Major mineral percentage included phosphorus (7401.43 ± 318.24) and sulphur (1926.58 ± 21.49), minor minerals were in trace amounts. Molar ratios of phytate: Fe, Zn and Ca and oxalate:Ca were above their critical values. Conclusion: A. daneilli seed is rich in nutrients, has high caloric value. High intake could lead to micronutrient malnutrition.

scholarly journals On the feeding habit of the Guiana Dolphin Sotalia guianensis (van Bénedèn, 1864) (Mammalia: Cetartiodactyla: Delphinidae) in southeastern Brazil (~220S): has there been any change in more than two decades?

2017 ◽  
Vol 9 (2) ◽  
pp. 9840 ◽  
Author(s):  
Ana Paula Madeira Di Beneditto ◽  
Clara Da Cruz Vidart Badia ◽  
Salvatore Siciliano
Keyword(s):  
Prey Species ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Southeastern Brazil ◽  
Feeding Preferences ◽  
Sotalia Guianensis ◽  
The North ◽  
Trichiurus Lepturus ◽  
Janeiro State ◽  
Guiana Dolphin

Along the north and central coast of Rio de Janeiro State (22025’S–23000’S), southeastern Brazil, the Guiana Dolphin Sotalia guianensis forages on neritic prey, mainly fish.  From the analysis of the dolphin’s stomach contents and the identification of partially digested prey, it was verified that the most frequent prey species were young specimens of Trichiurus lepturus.  Comparing our results with previous studies on the feeding habits of Guiana Dolphin in the same region, we noticed the maintenance of its feeding preferences during more than two decades, indicating little or no change in the use of prey by this top predator. 

Description of a new species of Neocypholaelaps (Acari: Ameroseiidae) from Brazil, with a key to the world species

Zootaxa ◽  
2010 ◽  
Vol 2554 (1) ◽  
pp. 37 ◽  
Author(s):  
GILBERTO J. DE MORAES ◽  
JOÃO P. Z. NARITA
Keyword(s):  
New Species ◽  
Southeastern Brazil ◽  
American Continent ◽  
World Species ◽  
Adult Females ◽  
The World ◽  
A New Species

A new species, Neocypholaelaps geonomae n. sp., is described based on the morphology of adult females and males collected on Geonoma spp. (Arecaceae) in southeastern Brazil. This is the first species of this genus identified from the American continent. A key to the world species of Neocypholaelaps is provided.

scholarly journals Small orchid bees are not safe: parasitism of two species of Euglossa (Hymenoptera: Apidae: Euglossina) by conopid flies (Diptera: Conopidae)

2008 ◽  
Vol 25 (3) ◽  
pp. 573-575 ◽  
Author(s):  
Gabriel A. R. Melo ◽  
Luiz R. R. Faria Jr ◽  
Paola Marchi ◽  
Claudio J. B. de Carvalho
Keyword(s):  
Adult Male ◽  
Host Species ◽  
Current Knowledge ◽  
Southeastern Brazil ◽  
Time Data ◽  
Euglossine Bees ◽  
Adult Females ◽  
Trap Nests ◽  
Unidentified Species ◽  
First Time

Here we report for the first time data on parasitism of two species of Euglossa, E. intersecta Latreille, 1838 and E. anodorhynchi Nemésio, 2006, by conopid flies of the genus Physocephala Schiner, 1861. A parasitized adult male of E. intersecta was collected in Acre, northwestern Brazil,while parasitized adult females of E. anodorhynchi were obtained from trap-nests in São Paulo, southeastern Brazil. For both host species, the parasite-host association was confirmed by rearing the flies from parasitized adult bees. E. anodorhynchi was attacked by Physocephala bipunctata (Macquart, 1843) and E. intersecta by an unidentified species of Physocephala Schiner, 1861. Although our current knowledge is still incipient, parasitism by conopid flies can be considered widespread in euglossine bees, judging from the cases reported so far, which involve different host genera and species distributed widely apart.

Proximate composition and caloric value of the mussel Perna perna, cultivated in Ubatuba, São Paulo State, Brazil

1998 ◽  
Vol 62 (4) ◽  
pp. 473-475 ◽  
Author(s):  
M. Tavares ◽  
M.R.P.do Amaral Mello ◽  
N.C. Campos ◽  
C. de Morais ◽  
S. Ostini
Keyword(s):  
Proximate Composition ◽  
Sao Paulo ◽  
São Paulo ◽  
Perna Perna ◽  
Caloric Value ◽  
Paulo State ◽  
São Paulo State

Growth of the tropical sand lizard Liolaemus lutzae in southeastern Brazil

1995 ◽  
Vol 16 (3) ◽  
pp. 257-264 ◽  
Author(s):  
Carlos Frederico Duarte Rocha
Keyword(s):  
Growth Rate ◽  
Growth Rates ◽  
Specific Growth ◽  
Southeastern Brazil ◽  
Adult Males ◽  
Adult Females ◽  
Sand Lizard ◽  
Males And Females ◽  
Specific Growth Rates ◽  
Janeiro State

AbstractThe growth of males and females of the tropidurid lizard Liolaemus lutzae was studied in the seasonal tropical habitat of the restinga da Barra de Maricá, Rio de Janeiro State, southeastern Brazil. Growth rates of lizards decreased with size in both sexes; the size specific growth rates of females were significantly lower than those of males. Adult males were larger than adult females. The data indicate that despite maturing at a larger size, males grow faster than females and mature at similar ages. There was a significant relationship between amount of rainfall and lizard growth rate in both sexes.

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