scholarly journals Host Preference of Epilachna Beetle, Epilachna dodecastigma (Wied.) among Cucurbitaceous Vegetables

2015 ◽  
Vol 3 (2) ◽  
pp. 352-358
Author(s):  
M. Asafuddaullah ◽  
M.M. Uddin ◽  
K.S. Islam ◽  
M.T.H. Howlader ◽  
M.M. Rahman
Keyword(s):  
Laboratory Condition ◽  
Open Field ◽  
Food Consumption ◽  
Host Preference ◽  
Bottle Gourd ◽  
Daily Food ◽  
Cage Condition ◽  
Series Of Experiments ◽  
Net Cage ◽  
Epilachna Dodecastigma

A series of experiments were carried out at the field and laboratory of the Department of Entomology, Bangladesh Agricultural University to determine the host preference of Epilachna beetle, Epilachna dodecastigma (Wied.) among four cucurbitaceous crops viz. cucumber, bottle Gourd, sweet Gourd and bitter Gourd. Three varieties of each crop were tested. Data on insect incidence, infestation, food consumption and fecundity of E. dodecastigma were collected. The highest number of Epilachna beetle was recorded on cucumber and the lowest was on bottle Gourd both in open field and in net cage condition. Among the varieties, the highest insect incidence was recorded on Sitol Sosa and the lowest was on BARI Lau-4 both in open field and in net cage. The highest leaf and twig infestation was found on cucumber crop and its’ Sitol Sosa variety, while the lowest was on bottle Gourd crop and its' BARI Lau-4 variety in both open field and in net cage. The Epilachna beetle showed the similar host preference in case of daily food consumption and oviposition rate both in net cage and laboratory condition. Thus, considering the insect incidence, infestation, food consumption and fecundity, the crop cucumber and the tested Sitol Sosa variety appeared to be the most preferred host for Epilachna beetle.Int J Appl Sci Biotechnol, Vol 3(2): 352-358 DOI: http://dx.doi.org/10.3126/ijasbt.v3i2.12809 

scholarly journals Effect of Temperature on the Bahaviour of Epilachna Beetle (Epilachna dodecastigma Wied.) among Different Brinjal Varieties

2012 ◽  
Vol 5 (1) ◽  
pp. 167-172
Author(s):  
S Das ◽  
MM Uddin ◽  
KS Islam
Keyword(s):  
Natural Resources ◽  
Host Plant ◽  
Food Consumption ◽  
Feeding Behaviour ◽  
Host Preference ◽  
Solanum Melongena ◽  
Effect Of Temperature ◽  
Profound Influence ◽  
Temperature Regimes ◽  
Epilachna Dodecastigma

An experiment was carried out to study the effect of temperature on biology, oviposition and feeding behaviour as well as host preference of Epilachna beetle, Epilachna dodecastigma (Wied.) on eight varieties of brinjal, Solanum melongena Linn. from November, 2009 to June, 2010 maintaining controlled temperatures of 15ºC, 25ºC and 30ºC using an incubator in the Department of Entomology, BAU, Mymensingh. Temperature has a profound influence on the oviposition and food consumption of Epilachna beetle. In incubator at 15oC, 25oC and 30oC temperature, larval daily average food consumption (mm2) among eight   host plant varieties of S. melongena was the highest on Thamba and the lowest on Bijoy, whereas adults daily mean food consumption at three temperature regimes was the highest on Thamba and the lowest on BAU-2 at 15oC and 25oC temperature and at 30oC temperature the lowest recorded on Bijoy. At 25oC temperature, the highest oviposition was recorded on Thamba and the lowest found on Jhumki. Similarly at 15oC and 30oC temperature, the highest oviposition was also observed on Thamba and  the lowest on Bijoy. Thus, the varieties namely Thamba, ISD 006 and Kazla appeared to be preferable hosts, whereas Bijoy, BAU-2 and Jhumki seemed to less preferable. The results revealed that temperature had direct effect on the behaviour and 25°C  temperature was congenial to both fecundity and food consumption of the Epilachna beetle. DOI: http://dx.doi.org/10.3329/jesnr.v5i1.11572 J. Environ. Sci. & Natural Resources, 5(1): 167 - 172, 2012

Feeding Schedule and Daily Food Consumption in Red-Throated Loons (Gavia stellata) over the Prefledging Period

The Auk ◽  
1984 ◽  
Vol 101 (3) ◽  
pp. 593-599 ◽  
Author(s):  
T. E. Reimchen ◽  
Sheila Douglas
Keyword(s):  
British Columbia ◽  
Food Consumption ◽  
Marine Fish ◽  
Average Duration ◽  
Fish Populations ◽  
Feeding Schedule ◽  
Parental Feeding ◽  
Daily Food ◽  
Feeding Activities ◽  
Coastal British Columbia

Abstract We describe parental feeding activities of Red-throated Loons (Gavia stellata) throughout the prefledging period at two freshwater nesting territories in coastal British Columbia. The nesting lake contained resident fish populations, but adult loons fed marine fish to their young, making an average of 11 flights per day (average duration 60 min per flight) to the ocean and returning each time with a single fish. Small shallow-bodied fish (Ammodytidae, Pholidae), which were easily swallowed by chicks, predominated in the diet during the 3 days following hatching. The total weight of fish fed to the chicks per day (8-194 g) increased over the prefledging period: adults returned fewer but larger fish (Embiotocidae) as the chick aged. Of the fish offered, 4% were too large for the chick to swallow.

scholarly journals Development of a foraging model framework to reliably estimate daily food consumption by young fishes

2017 ◽  
Vol 74 (10) ◽  
pp. 1668-1681 ◽  
Author(s):  
David Deslauriers ◽  
Alex J. Rosburg ◽  
Steven R. Chipps
Keyword(s):  
Water Temperature ◽  
Food Consumption ◽  
Prey Density ◽  
Handling Time ◽  
Prey Type ◽  
Daily Consumption ◽  
Model Framework ◽  
Fish Feeding ◽  
Daily Food Consumption ◽  
Daily Food

We developed a foraging model for young fishes that incorporates handling and digestion rate to estimate daily food consumption. Feeding trials were used to quantify functional feeding response, satiation, and gut evacuation rate. Once parameterized, the foraging model was then applied to evaluate effects of prey type, prey density, water temperature, and fish size on daily feeding rate by age-0 (19–70 mm) pallid sturgeon (Scaphirhynchus albus). Prey consumption was positively related to prey density (for fish >30 mm) and water temperature, but negatively related to prey size and the presence of sand substrate. Model evaluation results revealed good agreement between observed estimates of daily consumption and those predicted by the model (r2 = 0.95). Model simulations showed that fish feeding on Chironomidae or Ephemeroptera larvae were able to gain mass, whereas fish feeding solely on zooplankton lost mass under most conditions. By accounting for satiation and digestive processes in addition to handling time and prey density, the model provides realistic estimates of daily food consumption that can prove useful for evaluating rearing conditions for age-0 fishes.

scholarly journals Developmental stages of a common grass yellow butterfly, Eurema hecabe

2015 ◽  
Vol 24 (1) ◽  
pp. 73-81
Author(s):  
M Hasina Arju ◽  
Md Kowser Miah ◽  
Nousheen Parven ◽  
MA Bashar
Keyword(s):  
Survival Rate ◽  
Laboratory Condition ◽  
Incubation Period ◽  
Food Consumption ◽  
Developmental Stages ◽  
Average Duration ◽  
Pupal Stage ◽  
Larval Instars ◽  
Eurema Hecabe ◽  
Pierid Butterfly

Developmental stages of pierid butterfly (Lepidoptera: Pieridae) Eurema hecabe, duration and survival rate of developmental stages was studied in laboratory condition under 29 ± 3ºC temperature with RH 78 ± 2%. Egg, five larval instars and pupal stage were distinct. The average duration from egg to adult, incubation period, larval and pupal period was recorded 22.0 ± 0.7, 5.7 ± 6, 10.5 ± 0.4 and 6.5 ± 0.4 days, respectively. Twenty seven out of 34 larvae were successfully completed their whole 5 instars. Positive correlation among the larval instars, amount of food consumption and excretion of faeces were observed. About 65% pupae emerged as adult at laboratory condition. Dhaka Univ. J. Biol. Sci. 24(1): 73-81, 2015 (January)

scholarly journals Developmental stages of a mottled emigrant butterfly, catopsilia pyranthe

1970 ◽  
Vol 19 (2) ◽  
pp. 171-179 ◽  
Author(s):  
MH Arju ◽  
MA Bashar ◽  
G Moula
Keyword(s):  
Life Cycle ◽  
Survival Rate ◽  
Key Words ◽  
Laboratory Condition ◽  
Food Consumption ◽  
Larval Stage ◽  
Developmental Stages ◽  
Average Duration ◽  
Cycle Duration ◽  
Life Cycle Duration

The overall life cycle, duration and survival rate of different developmental stages (egg, larva and pupa) of Catopsilia pyranthe conducted at 27 ± 3°C and RH 75% ± 2. showed that within 6.4 days 68% eggs hatched. The average duration from egg to adult, larval stage and pupal were 23.87, 10.93 and 6.8 days, respectively. Fifty six out of 68 larvae successfully completed their whole 5 instars. There were positive correlation among the larval instars, amount of food consumption and excretion of faeces. About 52% pupa were emerged as adult at laboratory condition. Key words: Life cycle; Catopsilia pyranthe; Developmental stages; Rearing DOI: http://dx.doi.org/10.3329/dujbs.v19i2.8961 DUJBS 2010; 19(2): 171-179

Influence of Food Competition, Predation, and Cannibalism on Walleye (Stizostedion vitreum vitreum) and Sauger (S. canadense) Populations in Lake of the Woods, Minnesota

1976 ◽  
Vol 33 (9) ◽  
pp. 1946-1954 ◽  
Author(s):  
William A. Swenson ◽  
Lloyd L. Smith Jr.
Keyword(s):  
Body Weight ◽  
Food Consumption ◽  
Food Availability ◽  
Food Competition ◽  
Stizostedion Vitreum ◽  
Commercial Catch ◽  
Lake Of The Woods ◽  
Daily Food ◽  
Influence Of Food ◽  
Catch Statistics

Feeding relationships between walleye, Stizostedion vitreum vitreum, and sauger, Stizostedion canadense, in Lake of the Woods, Minnesota, were investigated. Effectiveness of food consumption estimates in measuring feeding interactions was defined. Differences in walleye and sauger distribution, food habits, and feeding strata reduced interactions. Walleye feeding rate varied from 0.5 to 4.1% of body weight per day and was limited by prey abundance during June and July. Higher August and September prey densities did not influence walleye food consumption. Daily food consumption of sauger varied from 0.5 to 3.5% of body weight independent of changes in food availability. Relationships between the number of prey consumed daily by walleye and sauger and the decline in abundance of prey species suggested that predation was important in controlling food availability, and was the major cause of food competition and its limiting effect on walleye growth.Analysis of commercial catch statistics suggested that factors other than predation influenced walleye survival. However, the relationship between the number of young-of-the-year walleye consumed and their abundance in the lake demonstrated predation by sauger may be important to walleye survival.

Food Consumption of Walleye (Stizostedion vitreum vitreum) and Sauger (S. canadense) in Relation to Food Availability and Physical Conditions in Lake of the Woods, Minnesota, Shagawa Lake, and Western Lake Superior

1977 ◽  
Vol 34 (10) ◽  
pp. 1643-1654 ◽  
Author(s):  
William A. Swenson
Keyword(s):  
Body Weight ◽  
Food Consumption ◽  
Yellow Perch ◽  
Prey Density ◽  
Lake Superior ◽  
Stizostedion Vitreum ◽  
Lake Of The Woods ◽  
Daily Food Consumption ◽  
Western Lake ◽  
Daily Food

Measurement of walleye (Stizostedion vitreum vitreum) daily food consumption rates and prey density in Lake of the Woods, Minnesota, Shagawa Lake, and western Lake Superior showed a general relationship exists between the two variables. Daily food consumption increased from 1 to 3% of body weight at prey densities up to 400 mg∙m−3. Abundance of age 0 yellow perch (Perca flavescens) in Lake of the Woods, Minnesota, and Shagawa Lake resulted in much higher prey densities and daily food consumption to 4% of body weight. In Lake Superior where walleye fed exclusively on rainbow smelt (Osmerus mordax), prey density did not exceed 300 mg ∙m−3 and daily food consumption averaged less than 2.5% of body weight.Hourly food consumption by walleye changed in response to variation in prey availability and light intensity. Night feeding predominated during July and August when walleye fed on pelagic age 0 yellow perch. Feeding appeared to be continuous or crepuscular during June and September when larger demersal prey fish or invertebrates were eaten. Food consumption declined when prey concentrated near aquatic macrophytes and under conditions of high light intensity. Walleye daily food consumption was not influenced by a change in temperature from 20 to 15 °C.Daily food consumption of Lake of the Woods, Minnesota sauger (Stizostedion canadense) averaged less than walleye and was influenced by wave activity and prey density. Demersal prey was utilized by sauger throughout the 24 h-day. Key words: Percidae, food consumption, behavior, feeding, walleye, Stizostedion vitreum vitreum, sauger, S. canadense, light

Parental Care and Feeding Ecology of Golden Eagle Nestlings

The Auk ◽  
1984 ◽  
Vol 101 (4) ◽  
pp. 753-760 ◽  
Author(s):  
Michael W. Collopy
Keyword(s):  
Parental Care ◽  
Food Consumption ◽  
Prey Availability ◽  
Birds Of Prey ◽  
Brood Rearing ◽  
Daily Food ◽  
Golden Eagles ◽  
Consumption Rates ◽  
The Mean ◽  
Capture Rates

AbstractA field study of Golden Eagles (Aquila chrysaetos) nesting in and near the Snake River Birds of Prey Area was conducted during 1977-1979. Patterns of parental care differed between female and male eagles during incubation and chick rearing; males consistently captured more food throughout all phases of brood rearing (1.2 vs. 0.6 prey/day), while females typically fed and tended the offspring. During the 7th through 9th week of chick rearing, when the food requirements of nestlings were greatest, the female contributed 43% of the prey biomass. No differences were observed in mean daily capture rates between 1978 and 1979 or between parents of one-chick broods and parents of two-chick broods. Although there were no differences between the sexes in the mean weight of prey captured, there were significant differences among pairs, suggesting differences in prey availability or hunting ability. The daily food consumption of eaglets increased as chick rearing progressed and peaked between the 7th and 9th week. Comparisons between eaglets in different-sized broods revealed that individuals in multiple-chick broods received more food from adults than those in one-chick broods. Late in chick rearing, however, those chicks competing with siblings for food had lower consumption rates.

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