The Progress of Nymphal Development in Pest Grasshoppers (Acrididae) of Western Canada

1963 ◽  
Vol 95 (11) ◽  
pp. 1210-1216 ◽  
Author(s):  
L. G. Putnam
Keyword(s):  
Sexual Maturity ◽  
Good Chance ◽  
Western Canada ◽  
Grasshopper Species ◽  
Nymphal Development ◽  
Complete Development ◽  
The Third ◽  
Successful Reproduction ◽  
The Times

AbstractEach of the three grasshopper species, Camnula pellucida, Melanoplus bilituratus and M. bivittatus, spent approximately 13, 17, 19, 22 and 29% of total time in nymphal development in the successive five instars. These proportions appeared similar at each of the six rearing temperatures 75, 80, 85, 90, 95 and 100°F. The times required for total nymphal development at these temperatures were 53, 36, 28½, 23½, 18 and 17 days, respectively. It was estimated that, for the grasshoppers to complete nymphal development and attain sexual maturity in time to have a reasonably good chance of successful reproduction, their integrated temperature experience for 12-hour days should be not less than 95°F. Whereas the apparent mid-point of nymphal development in terms of morphogenesis is midway through the third instar in the typical five-instar grasshoppers, the midpoint of time spent at constant temperatures is near the end of the third instar. C. pellucida appears unable to complete nymphal development at a temperature as low as 75°F.; the Melanoplus species, however, can complete development at this temperature, but with reduced survival.

Surveys of Adult Grasshoppers in Saskatchewan in Relation to Seasonal Development

1963 ◽  
Vol 95 (9) ◽  
pp. 936-941 ◽  
Author(s):  
P. W. Riegert ◽  
R. Pickford
Keyword(s):  
Sexual Maturity ◽  
Dominant Species ◽  
Adult Stage ◽  
The Other ◽  
Seasonal Development ◽  
Grasshopper Species ◽  
Total Period ◽  
Nymphal Development ◽  
The Past

AbstractIn the past twenty years in Saskatchewan the rate of nymphal development of three species of grasshoppers has varied considerably from year to year and region to region. Camnula pellucida appeared as early as, or earlier than, the other two species. The average date of attainment of the adult stage was July 21 compared to August 4th for Melanoplus bilituratus and M. bivittatus. Adult surveys in Saskatchewan have generally coincided with the time when the dominant species of grasshoppers, in any region, have attained full morphological and sexual maturity and have had an opportunity to disperse and stabilize density. Duration of the surveys, in any one of seven regions, in the years 1958-1961, varied from 4-31 days and averaged 19 days per year. The total period of survey for the province varied from 25-42 days and averaged 30 days per year.Variations in seasonal histories of the several grasshopper species demand an elastic schedule for surveys. The concept of maintaining a standard and rigid “best time” for surveys is untenable in the light of the present investigations.

INFESTIBILITY OF OILSEEDS, CLOVER, AND MILLET BY STORED-PRODUCT INSECTS

1972 ◽  
Vol 52 (4) ◽  
pp. 431-440 ◽  
Author(s):  
R. N. SINHA
Keyword(s):  
Tribolium Castaneum ◽  
Common Species ◽  
Western Canada ◽  
Cryptolestes Ferrugineus ◽  
Potential Danger ◽  
Complete Development ◽  
Stored Product Insects ◽  
Oryzaephilus Mercator ◽  
Insect Attack ◽  
New Pest

Infestation potential of 16 cultivars of flax, mustard, rape, sunflower, millet, and clover seeds to five common species of stored-product insects was determined. When multiplication was used as a criterion, whole seeds were resistant to insect attack although minor infestation occurred on certain cultivars. Although some species of insects could complete development on certain cultivars, few could reproduce well on clover and mustard cultivars. Oilseeds were more susceptible to Oryzaephilus mercator than to any other insect species. Cryptolestes ferrugineus, which thrived on the millet cultivars Crown and Siberian, neither reproduced nor completed development on any of the oilseed and forage cultivars. All cultivars of crushed Noralta, Raja, and Redwood flax were susceptible to: O. mercator, O. surinamensis, and Tribolium castaneum; Echo and Target rape only to O. mercator; Armavirec, Krasnodarets, Mennonite, and Peredovic sunflowers to all insects except C. ferrugineus; and Crown and Siberian millet to all insects. Tribolium confusum reproduced only on sunflower and millet cultivars. The potential danger of stored oilseeds in Western Canada from a new pest, O. mercator, was evaluated.

CYCLE BIOLOGIQUE DE PISSODES NOTATUS (COLEOPTERA, CURCULIONIDAE) DANS LA REGION TOULOUSAINE (FRANCE)

1977 ◽  
Vol 109 (4) ◽  
pp. 597-603 ◽  
Author(s):  
Claude Alauzet
Keyword(s):  
Adult Emergence ◽  
Egg Laying ◽  
Emergence Period ◽  
Cycle Biologique ◽  
Complete Development ◽  
The Third ◽  
Pissodes Notatus ◽  
Field Temperature ◽  
Further Development ◽  
Two Populations

AbstractThe maximal emergence of Pissodes notatus (F.) adults takes place during July and August. It results from the different evolution of two populations:— a first population, whose complete development (from egg to adult) takes 11 or 12 months. This population corresponds to eggs laid after the middle of July (maximum egg laying during September). Most of the larvae having reached the third instar, it shows no more evolution during the winter; the further development takes place during the next spring, and adults emerge from mid-June to mid-July.— a second population resulting from egg laying, between February and July, of hibernated adults (maximum egg laying during April and May). The whole development being very short (2 to 3 months), the adults, corresponding to these eggs, emerge from the middle of July to the end of August.The observed differences between durations of the under-bark development (from 2 to 12 months) appear free of diapause and probably result from rates of development changing with temperature and instar.In our regional field temperature conditions, all the individuals reach finally their under-bark development approximatively at the same time, so that the adult emergence period takes place in July and August.

Trade and faith in Nubian Early Makuria (AD 450–550): macroscopic examination of personal adornments from el-Zuma in Nubia

2017 ◽  
Vol 25 ◽  
pp. 741-760 ◽  
Author(s):  
Joanna Then-Obłuska
Keyword(s):  
Phase Ii ◽  
Marine Mollusk ◽  
The Third ◽  
History Of ◽  
Manufacturing Techniques ◽  
The Times ◽  
Macroscopic Examination ◽  
Mollusk Shell ◽  
Broad Overview ◽  
Ostrich Eggshell

In the long history of the land between the Third and Fourth Cataracts on the Nile, the period corresponding to the times of Early Makuria is particularly well represented. The el-Zuma tumuli cemetery has been dated to the Early Makuria Phase II (AD 450–550). Although the graves were heavily robbed, the remains of personal adornments (beads, pendants, rings, and an earring) give a broad overview of materials (marine mollusk shell, coral, ostrich eggshell, stone, metal, faience, glass) and techniques applied in their production. A comparative synopsis of contemporary Nubian adornments shows parallels for the objects from el-Zuma. Moreover, the provenance of the materials and manufacturing techniques suggests el-Zuma’s involvement in regional and longdistance exchange during this period. Finally, the presence of a Christian symbol and imported beads in the el-Zuma tumuli is meaningful in itself.

Aspects of ecology of the threatened ringed sawback turtle, Graptemys oculifera

1991 ◽  
Vol 12 (2) ◽  
pp. 161-168 ◽  
Author(s):  
Christopher P. Kofron
Keyword(s):  
Sexual Maturity ◽  
River System ◽  
Pearl River ◽  
Museum Specimens ◽  
Adult Males ◽  
Important Food ◽  
The Third ◽  
The Pearl River ◽  
The U.S ◽  
Growth And Reproduction

AbstractThe ringed sawback turtle, Graptemys oculifem, is endemic to the Pearl River system of Louisiana and Mississippi in southern USA. In 1986 the species was placed on the U.S. Federal List of Endangered and Threatened Species with status designation of 'threatened'. Existing museum specimens were examined to determine geographic distribution, food, growth and reproduction. Caddisflies, dipteran flies, mayflies, beetles and plant material were the most important food. Many stomachs contained small pieces of wood, suggesting that fallen tree trunks were a "grazing" substrate. Males ranged from 3.2-8.6 cm plastron length, and attained sexual maturity during the third or fourth year at lengths of about 6.0-7.0 cm. Adult males experienced recrudescence of testes, with maximum testis lengths during August and September indicating the probable time of spermatogenesis. Females ranged from 3.3-18.9 cm plastron length, and appeared to attain sexual maturity during the seventh or eighth year at lengths greater than 10.0 cm. The data suggested that ovulation occurs from May through July, nesting during June and ,July, and hatching at least during August. Clutch size appeared to be just two or three eggs.

Length and age at maturity of Antarctic krill

1994 ◽  
Vol 6 (4) ◽  
pp. 479-482 ◽  
Author(s):  
V. Siegel ◽  
V. Loeb
Keyword(s):  
Antarctic Peninsula ◽  
Sexual Maturity ◽  
Antarctic Krill ◽  
Euphausia Superba ◽  
Knife Edge ◽  
Age At Maturity ◽  
Growth Season ◽  
The Third ◽  
Age Class ◽  
The Antarctic

Data from several summer research cruises in the Antarctic Peninsula region were analysed to calculate length (L50) and age at maturity for the Antarctic krill, Euphausia superba. Length at maturity L50 is defined as the length at which 50% of the krill stock attains sexual maturity. L50 values of 34.65–35.91 mm for female krill are the best estimates for the peak spawning season. Males attain sexual maturity later at L50 values of 43.35–43.71 mm. Length at maturity and length at first spawning are identical for krill. Comparisons with mean length-at-age data show that females mature in the third growth season (age class 2+), while males reach maturity in the fourth year (age class 3+). Both sexes show ‘knife-edge maturity’.

scholarly journals Biogradska predromanička skulptura

Ars Adriatica ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 65
Author(s):  
Ivan Josipović
Keyword(s):  
Homogeneous Groups ◽  
The Third ◽  
12Th Century ◽  
Stone Carving ◽  
The Times

This paper analyses the extant pre-Romanesque sculpture from Biograd, classifying it into homogeneous groups based on stylistic and visualmorphological features, and attributing it to various stone-carving workshops active from the last decades of the 8th until the late 9th century. Most of the fragments have been associated with the recently identified atelier called “Workshop of the Plutei of the Zadar Cathedral” and dated approximately to the last decades of the 8th or the very beginning of the 9th century. Some of the remaining fragments have been linked to the stone-carving workshops active in the times of the Croatian dukes Trpimir and Branimir, and thus dated to the middle and the last quarter of the 9th century, respectively. As for the rest of the reliefs, it has only been possible to establish that they show features of mature pre-Romanesque style typical of the 9th century, with three interesting fragments dated to a somewhat later period based on their stylistic features: two of them to the mid-11th and the third to the first quarter of the 12th century. Finally, an analysis and attribution of three fragments of two pilasters that were later re-carved as an architrave, discovered in St Chrysogonus’ church in Zadar, has helped the author to establish a chronological distinction between two early stone-carving productions identified in the broader Zadar region. One of them is the “Workshop of the Plutei of the Zadar Cathedral”, which helps in dating the largest group of pre-Romanesque reliefs from Biograd with greater accuracy.

scholarly journals THE PECULIARITY OF THE BUILDING PROCESS OF ANCIENT KYYIVAN MONUMENTS

2021 ◽  
pp. 58-66
Author(s):  
Natalia Logvyn
Keyword(s):  
Winter Season ◽  
Late Spring ◽  
First Year ◽  
Central Dome ◽  
The Third ◽  
Early Autumn ◽  
Building Process ◽  
Byzantine Architecture ◽  
Second Year ◽  
The Times

The author investigates the building process of ancient Kyyivan monuments. After the wall foundations were laid, the erection of ground volumes of the edifice began. Wooden scaffoldings were arranged at both sides of a wall. The remains of caffolding preserved in the brick fabric can be seen on the front walls of the Transfiguration Church at Berestove and St. Michael’s Church of Vydubytsky monastery. The height between scaffolding tiers as well as the height of masonry between them varies from 1.3 to 2.2 m in Kyyivan monuments. The situation of red schist cornices in ancient churches is dependent on the abovementioned height of masonry tiers. The cornices are placed at springs of arches and vaults, at the level of the choir gallery floor, at the spring of supporting arches and basement of central dome. The location of cornices hence marked the completion of a certain building period. Being put over brickwork at the end of building period in autumn those cornices protected construction from precipitation during winter season. That is why cornices within the Kyyivan St.Sophia Cathedral have “throats” – grooves which are cut along the underside of cornices as a stringcourses to prevent water from running back across them towards the wall. One can easily determine building periods of the St. Sophia Cathedral according to the cornice levels in it. As far as building period at the times of Old Rus` took approximately six to seven months (from late spring to early autumn), the erection of the St. Sophia Cathedral with its five naves and double galleries was continued through five or six years. Cross-domed churches with three naves were built during approximately three or four years. For example St.Michael’s Church at Vydubytsky Monastery was built to the height of choir gallery during the first year, then to the height of vaults’ and domes’ springing during the second year, after that vaults and domes were completed during the third year. The types of vaults used in ancient Kyyivan architecture were barrel vaults, domes on pendantives and domes on high drums. Widely spread in Byzantine architecture groined vaults were not in use in the Old Rus` building until the middle of the XII century. Also there was a certain consecutive order in erection of parts of a church: at first its central cross-domed volume, then apses, narthex, galleries etc. were built. In a year or two after the edifice was built its walls were covered with plaster and decorated with murals. Building methods applied in the ancient Kyyivan monuments of the XI-th century formed the basis of Old Rus` architecture developed during the following centuries.

scholarly journals Konsep penalaran bayani, irfani dan burhani pada pembelajaran aqidah ahlak dalam pendidikan islam

2020 ◽  
Vol 3 (2) ◽  
pp. 89-97
Author(s):  
Yayuk Purwati ◽  
Aulia Diana Devi
Keyword(s):  
Religious Education ◽  
Modern Architecture ◽  
Islamic Education ◽  
Muslim Community ◽  
Global Issues ◽  
The Third ◽  
History Of ◽  
The Times ◽  
Islamic Civilization ◽  
Curriculum Organization

This paper aims to describe the concept of reasoning bayani, irfani and burhani on the learning of Aqidah Akhlak in Islamic education. aqidah akhlak learning innovations in Islamic education in schools to overcome the growth of children. The direction and purpose of Islamic education is to foster students with early integrity and national loyalty, so that it is necessary to multiply its efforts in the field of science. Some aspects of science that need attention include: First, updating the epistemological method of the history of Islamic civilization and learning from the relevant curriculum organization. Second, the epistemological paradigm reform of Bayani's reasoning aims to be Abid al-Jabiri's trilogy of reasoning, namely Bayani reasoning, Irfani reasoning and Burhani reasoning in the learning of Aqidah Akhlak. All three are very linear reasoning that goes hand in hand but still only bayani is made a top priority. And the third circular linking between the three and all reasoning can complement each other. And thirdly in accordance with the value of global issues in the learning materials aqidah Akhlak, as well as the progress of the times and the complexity of the issues faced by mankind, especially the Muslim community, the issue must be acted on locally but globally. This is a response to the progress of modern architecture, so Islamic religious education in the school is very necessary and needs to be considered its existence.

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