Host Plants, Temperature and Seasonal Effects on Immature Development and Adult Size of Euploea-Core-Corinna (Lepidoptera, Danainae)

1989 ◽  
Vol 37 (5) ◽  
pp. 599 ◽  
Author(s):  
E Scheermeyer ◽  
RL Kitching ◽  
RE Jones
Keyword(s):  
Host Plants ◽  
Wing Length ◽  
Early Spring ◽  
Seasonal Effects ◽  
Nerium Oleander ◽  
Pupal Weight ◽  
Adult Size ◽  
Cryptostegia Grandiflora ◽  
Developmental Rates ◽  
The Right

The suitability of four commonly used host plants of Euploea core, i.e. Cryptostegia grandiflora, Hoya australis, Nerium oleander and Parsonsia straminea, was measured in terms of developmental rates, pupal weight and adult wing length. The experimental temperature and seasonal quality of fresh shoots of the host plant affected all these variables. The results of development rates were inconsistent across host plants at different temperatures, but pupal weight and wing length of the butterfly were consistent. Despite great differences in the weight of pupae, pupal developmental rates appeared mainly affected by temperature. Fresh foliage produced in early spring gave significantly better growth of larvae than fresh foliage produced in late spring or autumn. Larvae coped with poor food quality in two distinct ways. One group moulted at approximately the right time, but at an unusually small size, the other group delayed moulting until it reached an appropriate size for moult. Losses were heavy in both groups. Overall, host plants in the Apocynaceae were more suitable for growth than those in the Asclepiadaceae, but whether the host plants were introduced or native, or whether they contained copious quantities of latex or not, did not seem to have a significant effect. The successful use of host plants in the Asclepiadaceae, like the C. grandiflora and ornamental H. australis, is therefore probably related to other factors, such as the frequency with which they produce fresh foliage and their common presence, overriding any minor differences in suitability. Key words: Euploea, developmental rates, host plants, seasonal effects.

scholarly journals Effect of host plant on the life history of the carnation tortrix moth Cacoecimorpha pronubana (Lepidoptera: Tortricidae)

2021 ◽  
pp. 1-7
Author(s):  
Marcin W. Zielonka ◽  
Tom W. Pope ◽  
Simon R. Leather
Keyword(s):  
Life History ◽  
Host Plant ◽  
Plant Species ◽  
Host Plants ◽  
Crop Protection ◽  
Plant Production ◽  
Pupal Weight ◽  
Production Environment ◽  
Host Plant Species ◽  
The Uk

Abstract The carnation tortrix moth, Cacoecimorpha pronubana (Hübner, [1799]) (Lepidoptera: Tortricidae), is one of the most economically important insect species affecting the horticultural industry in the UK. The larvae consume foliage, flowers or fruits, and/or rolls leaves together with silken threads, negatively affecting the growth and/or aesthetics of the crop. In order to understand the polyphagous behaviour of this species within an ornamental crop habitat, we hypothesized that different host plant species affect its life history traits differently. This study investigated the effects of the host plant species on larval and pupal durations and sizes, and fecundity (the number of eggs and the number and size of egg clutches). At 20°C, 60% RH and a 16L:8D photoperiod larvae developed 10, 14, 20 and 36 days faster when reared on Christmas berry, Photinia (Rosaceae), than on cherry laurel, Prunus laurocerasus (Rosaceae), New Zealand broadleaf, Griselinia littoralis (Griseliniaceae), Mexican orange, Choisya ternata (Rutaceae), and firethorn, Pyracantha angustifolia (Rosaceae), respectively. Female pupae were 23.8 mg heavier than male pupae, and pupal weight was significantly correlated with the duration of larval development. The lowest and the highest mean numbers of eggs were produced by females reared on Pyracantha (41) and Photinia (202), respectively. Clutch size differed significantly among moths reared on different host plants, although the total number of eggs did not differ. This study showed that different ornamental host plants affect the development of C. pronubana differently. Improved understanding of the influence of host plant on the moth's life history parameters measured here will help in determining the economic impact that this species may have within the ornamental plant production environment, and may be used in developing more accurate crop protection methodologies within integrated pest management of this insect.

Maternal influences on size and emergence time of the cinnabar moth

1980 ◽  
Vol 58 (8) ◽  
pp. 1452-1457 ◽  
Author(s):  
Laura J. Richards ◽  
Judith H. Myers
Keyword(s):  
Genetic Variance ◽  
Hatching Success ◽  
Wing Length ◽  
Female Parent ◽  
Female Offspring ◽  
Pupal Weight ◽  
Emergence Time ◽  
Egg Weight ◽  
Maternal Influences ◽  
Cinnabar Moth

Maternal effects on egg weight, wing length, and emergence time were studied in the cinnabar moth. Egg weight was related to hatching success, but neither egg weight nor order of laying were related to pupal weight of larvae reared under greenhouse conditions. Heritabilities of wing length and emergence time calculated from the regression of mean offspring values on female parent were 0.30 ± 0.12 and 0.39 ± 0.14 respectively for female offspring. Regressions for male offspring were not significant. Significant differences between families in an ANOVA however were indicative of genetic variance. Genetic variance for female emergence time is discussed as one mechanism which has enabled synchronization of moth emergence with the appropriate phase of food plant phenology for larval development.

scholarly journals Patterns of Growth in Nestling Indian Barn-Owls

The Condor ◽  
2002 ◽  
Vol 104 (4) ◽  
pp. 885-890 ◽  
Author(s):  
Rajarathinavelu Nagarajan ◽  
Krishinamoorthy Thiyagesan ◽  
Rajagopalan Natarajan ◽  
Ramalingam Kanakasabai
Keyword(s):  
Body Mass ◽  
Body Length ◽  
Wing Length ◽  
Growth Patterns ◽  
The Body ◽  
Logistic Growth ◽  
Adult Size ◽  
Tyto Alba ◽  
Tarsus Length ◽  
Bill Length

Abstract We examined nestling growth patterns of the Indian Barn-Owl (Tyto alba stertens) in Tamilnadu, Southern India, with reference to body mass, body length, bill length, bill width, wing length, wingspan, tail length, tarsus length, and middle claw length. Body mass reached an asymptote of 447.0 ± 6.8 g during week 7, which was 10% higher than the adult mass. Then it significantly declined to 437.0 ± 10.9 g at fledging. At the end of week 4, the body length, bill length, bill width, tarsus length, and middle toe length had surpassed 50% of adult sizes. The wingspan and tarsus length reached almost adult size by the time of fledging. A logistic growth curve was found to be a good fit for all the growth variables and explained between 71% (wing length) and 86% (body length) of the variance. Patrones de Crecimiento en Polluelos de Tyto alba stertens Resumen. Examinamos los patrones de crecimiento de polluelos de Tyto alba stertens en Tamilnadu, sudoeste de India, en relación al peso y el largo del cuerpo, el largo y el ancho del pico, el largo del ala y su envergadura, y el largo de la cola, los tarsos y de la garra mediana. El peso corporal alcanzó una asíntota de 447.0 ± 6.8 g durante la séptima semana, el cual fue un 10% mayor que el peso de los adultos. Posteriormente, durante el período de volantones, el peso corporal disminuyó hasta 437.0 ± 10.9 g. Al final de la cuarta semana, el largo del cuerpo, el largo y el ancho del pico, y los largos del tarso y del dedo mediano habían sobrepasado el 50% de los tamaños adultos. La envergadura del ala y el largo del tarso casi alcanzaron tamaños adultos durante el período de volantones. Se encontró que una curva de crecimiento logístico se ajustó bien a todas las variables de crecimiento y explicó un 71% (largo del ala) y un 86% (largo del cuerpo) de la varianza.

Diapause and overwintering of the carrot fly, Psila rosae (F.) (Diptera: Psilidae)

1981 ◽  
Vol 71 (4) ◽  
pp. 583-590 ◽  
Author(s):  
A. J. Burn ◽  
T. H. Coaker
Keyword(s):  
Adult Emergence ◽  
Early Spring ◽  
Pupal Weight ◽  
Prepupal Stage ◽  
Psila Rosae ◽  
Carrot Fly ◽  
Soil Temperatures ◽  
Similar Temperature ◽  
Effects Of Temperature ◽  
Diapause Development

AbstractPsila rosae (F.) overwinters in Britain in both the larval and pupal stages. Overwintering pupae formed in October and November at soil temperatures of between 10 and 16°C entered diapause. A period of similar temperature in the laboratory during the prepupal stage also caused pupae to enter diapause. Overwintering larvae continued to feed and gain weight; they pupated in early spring at soil temperatures of 2–8°C but did not enter diapause. The sensitivity to diapause-inducing conditions decreased between November and March, associated with changes in developmental temperatures and pupal weight. The differential effects of temperature on larval, pupal and diapause development together serve to synchronise adult emergence from the overwintering population. The mechanisms which allow overwintering by a variable proportion of larvae and pupae also provide the opportunity for the development of a third generation of adult flies in October and November.

Rearing Protocol and Life History Traits for Poecilus chalcites (Coleoptera: Carabidae) in the Laboratory

2005 ◽  
Vol 40 (2) ◽  
pp. 126-135 ◽  
Author(s):  
Jonathan G. Lundgren ◽  
Jian J. Duan ◽  
Mark S. Paradise ◽  
Robert N. Wiedenmann
Keyword(s):  
Moisture Content ◽  
Life History Traits ◽  
Ground Beetle ◽  
Adult Size ◽  
Substrate Type ◽  
Larval Size ◽  
Pupation Rate ◽  
Developmental Rates ◽  
Substrate Moisture ◽  
Meridic Diet

A rearing protocol for the predaceous ground beetle, Poecilus chalcites (Say), is described. The effects of dietary constituents, substrate moisture content, and substrate type on larval developmental rates and size were examined in the laboratory. The protocol was successful in obtaining nearly 80% pupation rates, although adult size was smaller than field-collected beetles, and laboratory-produced adults did not lay eggs. We determined experimentally that some of the components of the meridic diet used for colony production could be removed without compromising larval size or developmental rates, but that nutrition beyond cat food was necessary to increase larval size. We found a positive correlation of larval size with increased moisture content using vermiculite substrate at three moisture levels (33.3, 50.0 and 66.7% by weight). Untreated Fer-Til® (GreenGro Products, Jackson, WI) soil resulted in the highest pupation rate (70 to 80%) and had one of the shortest developmental periods of the five soils tested. Steaming or sifting Fer-Til soil compromised its ability to support larval development until pupation.

scholarly journals Measurement of Several Bodies Parts of Super Kampong Chicken Reared Intensively

2020 ◽  
Vol 6 (2) ◽  
pp. 103
Author(s):  
Mohammad Hasil Tamzil ◽  
Budi Indarsih
Keyword(s):  
Body Weight ◽  
Wing Length ◽  
The Body ◽  
Chest Circumference ◽  
Body Parts ◽  
Neck Length ◽  
Animal Science ◽  
Individual Bird ◽  
The Right ◽  
Female Chicken

The study was designed to determine the size of some body parts of the Super Kampong chicken and its relationship with body weight. The study was conducted at the Teaching Farm of Animal Science Faculty, University of Mataram, in Lingsar Village, West Lombok. The study used 60 male and 96 female Super Kampong chickens which were maintained intensively. The variables observed were body weight, head circumference, neck length, wing length, back length, chest circumference, chest width, upper and lower thigh length, metatarsus length, metatarsus circumference, and third finger length. Measurements were made for each individual bird at 13 weeks of age using yarn then measured with a tape measure, while the dimension of chest width was assigned  by measuring the distance between the right and right sides of the chest using calipers. The results found that the body parts that had the biggest contribution to the body weight of the Super Kampong chickens at 13 weeks old were the size of the lower thigh length in the male chicken and the size of the chest circumference in the female chicken.

scholarly journals The Defeat of Marc Macrinius Vindex. To the History of the Marcomannic Wars in the Middle Danube

2021 ◽  
pp. 60-65
Author(s):  
S.M. Rubtsov
Keyword(s):  
Roman Empire ◽  
Early Spring ◽  
Military Operations ◽  
Roman Army ◽  
Marcus Aurelius ◽  
The North ◽  
History Of ◽  
The Right ◽  
Roman Province ◽  
The Military

The article is devoted to the military action of the Roman Empire in the Middle-Danube valley in the early spring 170 year 2-nd centuries A.D. The main aim of this article consists in reconstruction one of the important events in Roman wars against the Germans tribe marcomanni, who lived on the territory of modern-day Czechia (ancient Boygemia). The author uses the analytical and comparative methods, analyzing the historical works of Roman authors and epigraphic facts. One of the main new aspects of article consists in chronology of events. The author tries to prove that defeat of Roman army and death of praefectus Marc Macrinius Vindex took place at the same time in early spring 170 year 2-nd centuries A.D.. This defeat had the important influence on the other military operations in the next time. Marcomanni and his allies seriously threatened the Roman province of Pannonia situated on the right bank of the Danube. The emperor Marcus Aurelius (161 — 180 A.D) waged several wars against the marcomanni and their allies quadi in 167 — 180 A.D. In winter 169 A.D. Marcus Aurelius became the sole emperor. He came back in Carnuntum in Upper Pannonia and began to complete the army for the offensive against marcomanni. The legatus Augusti Marc Macrinius Avitus Catonius Vindex with vexillationes of five Pannonia's legions and a few auxiliums forced a crossing the Danube in the early spring 170 A.D. Marcomanni defeated the Roman army and killed the legatus Augusti. The Germans captivated many soldiers from legions and auxiliums, burned several war-camps in Upper and Lower Pannonias. They reached the borders of the North Italy and besieged the Aquileja again. The author comes to the conclusion, that in result of the defeat of Marc Macrinius Vindex the Roman troops in the Middle and Lower Danube stood on the defensive.

scholarly journals Seasonal Effects of Transplanting on Northern Red Oak and Willow Oak

2004 ◽  
Vol 22 (2) ◽  
pp. 75-79
Author(s):  
Lisa E. Richardson-Calfee ◽  
J. Roger Harris ◽  
Jody K. Fanelli
Keyword(s):  
Root Growth ◽  
Early Spring ◽  
Height Growth ◽  
Seasonal Effects ◽  
Late Winter ◽  
Red Oak ◽  
Bud Break ◽  
Northern Red Oak ◽  
Trunk Diameter ◽  
Red Oaks

Abstract Seasonal effects on transplant establishment of balled-and-burlapped (B&B) shade trees are not well documented. Early post-transplant root growth and aboveground growth over a 3-year period were therefore determined for November-and March-transplanted northern red oak (Quercus rubra L.) and willow oak (Q. phellos L.). Survival of red oak was 100% for both treatments. Survival of November-and March-transplanted willow oak was 67% and 83%, respectively. No new root growth was observed outside or within the root balls of either species upon excavation in January. New root growth was evident when trees of both species were excavated in April, indicating that root system regeneration of November-transplanted trees occurs in late winter and/or early spring, not late fall and/or early winter. November-transplanted red oak, but not willow oak, grew more roots by spring bud break than March-transplanted trees. However, little difference in height growth and trunk expansion was evident between the November-and March-transplanted red oaks throughout the 3 years following transplant. While height growth of willow oak was nearly identical between treatments after 3 years, November transplants exhibited greater trunk diameter increase for all 3 years. Overall, season of transplant had little effect on height and trunk diameter increase of red oak, even though November-transplanted trees grew more roots prior to the first bud break following transplant. Among the willow oaks that survived, season of transplant had little effect on new root growth and height growth, but November transplanting resulted in greater trunk expansion. However, when the mortality rate of November-transplanted willow oak is taken into consideration, March may be a better time to transplant willow oak in climates similar to southwest Virginia.

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