ABNORMALITIES IN SOME IMMATURE ELATERIDAE (COLEOPTERA)

1959 ◽  
Vol 37 (5) ◽  
pp. 699-706 ◽  
Author(s):  
Russell Y. Zacharuk
Keyword(s):  
Larval Stage ◽  
Abdominal Segment ◽  
Early Larval Stage ◽  
The Third ◽  
Dry Soil ◽  
Freezing Temperatures ◽  
Newly Hatched Larvae ◽  
A Minor ◽  
Parent Generation

Prothetely was observed in 13 elaterid larvae, and metathetely in numerous pupae, that were exposed to near-freezing temperatures several days before metamorphosis would have occurred normally. Prothetely also occurred in nine larvae, and metathetely in seven pupae, that were reared in soil that is not inhabited by the species in nature. In dry soil, many larvae molted abnormally and developed a minor deformity of the ninth abdominal segment; some larvae molted only partially and died.Several embryos, 75 newly hatched larvae, and six larvae in later instars had aberrant ninth abdominal segments. In two other newly hatched larvae the third to ninth abdominal segments were missing. These aberrations appear to be external manifestations of a genetic disturbance that occurred in the parent generation. They were usually fatal in the embryonic or early larval stage, but a few of the newly hatched larvae and the six larger larvae, all of which exhibited nearly symmetrical aberrations of the ninth abdominal segment, developed and behaved normally in the larval stage.

scholarly journals STUDY ON SURVIVABILITY OF NEWLY HATCHED LARVAE OF TWO SPECIES OF PEPPERMINT SHRIMP FED WITH DIFFERENT COMBINATIONS AND DENSITIES OF LIVE FOODS

2019 ◽  
Vol 14 (1) ◽  
pp. 15
Author(s):  
Indra Pratama ◽  
Hatim Albasri
Keyword(s):  
Survival Rate ◽  
Larval Stage ◽  
Survival Rates ◽  
The Third ◽  
Randomized Design ◽  
Average Survival ◽  
Peppermint Shrimp ◽  
Trial Treatment ◽  
Newly Hatched Larvae ◽  
Average Survival Rate

This study was aimed to evaluate different types and combinations of live foods in relation to the survivability of newly hatched Lysmata vittata and Lysmata intermedia larvae. The experiment consisted of three trials (different species, combinations, and densities of live foods) arranged in a completely randomized design. The first and second trials were subjected to L. vittata with three treatments for each trial (1A, 1B, 1C for trial-1; 1D, 1E, 1F for trial-2). The third trial consisted of two treatments (2A and 2B) tested on L. intermedia. Each treatment had three replicates. The results showed that the survival rates were low in all treatments. However, each treatment showed a significant effect (P<0.05) on the average survival rate of L. vittata and L. intermedia larvae. In the first trial, treatment 1C was the only one that had survived larvae after day 35 with 4.44% of final average survival rate (FASR). Four of the larvae reached the post-larval stage. In the second trial, treatment 1F showed a better condition than the other treatments with 5.56% FASR. Nevertheless, no larvae in the second trial had transformed to post-larval stage before the experiment ended at day 46. In the third trial, no larvae survived to reach the post-larval stage. In spite of this, treatment 2B had better daily average survival rate (DASR) than treatment 2A. This research concludes that the use of copepods as live food at an early larval stage and Artemia at a later stage is relatively more effective to improve the survival rate of peppermint shrimp larvae.

Description of the Larva of Sphaeropthalma pensylvanica (Lepeletier) (Hymenoptera: Mutillidae: Sphaeropthalminae)

2000 ◽  
Vol 35 (3) ◽  
pp. 334-337 ◽  
Author(s):  
James P. Pitts ◽  
Robert W. Matthews
Keyword(s):  
Larval Stage ◽  
Abdominal Segment ◽  
The Other ◽  
The Third ◽  
Mandibular Tooth

The larval stage of Sphaeropthalma pensylvanica (Lepeletier) is described and differentiated from other known larval Mutillidae. The larva of S. pensylvanica differs from the other described larvae of Mutillidae by the following combination of characters: the tenth abdominal segment rounded and not produced over the anus, a basal mandibular tooth half the size of the third mandibular tooth, large, densely clustered sensilla on the labrum, and prominent pleural lobes.

scholarly journals Ecological Effects of Perorally Administered Pivmecillinam on the Normal Vaginal Microflora

2005 ◽  
Vol 49 (1) ◽  
pp. 170-175 ◽  
Author(s):  
Åsa Sullivan ◽  
Aino Fianu-Jonasson ◽  
Britt-Marie Landgren ◽  
Carl Erik Nord
Keyword(s):  
Escherichia Coli ◽  
Candida Albicans ◽  
Antimicrobial Agents ◽  
Ecological Impact ◽  
Menstrual Cycles ◽  
The Third ◽  
Vaginal Microflora ◽  
Normal Microflora ◽  
Facultative Anaerobic ◽  
A Minor

ABSTRACT The knowledge of the effects of antimicrobial agents on the normal vaginal microflora is limited. The objective of the present study was to study the ecological impact of pivmecillinam on the normal vaginal microflora. In 20 healthy women, the estimated day of ovulation was determined during three subsequent menstrual cycles. Microbiological and clinical examinations were performed on the estimated day of ovulation and on day 3 in all cycles and also on day 7 after ovulation in cycles 1 and 2. Anaerobic and facultative anaerobic gram-positive rods, mainly species of lactobacilli and actinomycetes, dominated the microflora. One woman was colonized on the third day of administration with a resistant Escherichia coli strain, and Candida albicans was detected in one woman on days 3 and 7 in cycle 2. No other major changes in the normal microflora occurred during the study. Administration of pivmecillinam had a minor ecological impact on the normal vaginal microflora.

scholarly journals A contribution to the study of biology of Curculio elephas Gyll. (Coleoptera, Curculionidae)

2011 ◽  
pp. 19-28
Author(s):  
Milan Drekic ◽  
Ljubodrag Mihajlovic
Keyword(s):  
Life Cycle ◽  
Larval Stage ◽  
Seed Orchard ◽  
Egg Laying ◽  
Pedunculate Oak ◽  
Minor Part ◽  
One Year ◽  
Entomological Laboratory ◽  
A Minor ◽  
Curculio Elephas

One of the insects that feeds on pedunculate oak acorns and reduces its seed yield is Curculio elephas Gyll. The study of Curculio elephas Gyll is necessary because of the severe damages caused by this insect and also owing to its insufficiently investigated biology. The research was conducted in the common oak seed orchard at Banov Brod, forest estate ?Sremska Mitrovica?, and in the entomological laboratory. The adults emerge from the soil chambers from mid July till the beginning of September. The presence of adults, as determined by crown fogging, ranged from the end of July till the beginning of September with the highest number in mid August. After emerging from the soil, females are already fertile with the developed eggs in the ovaries. They start egg laying after 1 to 8 days and they lay from one to seven eggs per day. Egg laying period lasts from 7 to 20 days. Fertility of C. elephas females ranges from 5 to 40 eggs, while their fecundity ranges from 19 to 45 eggs. At the end of the larval stage, larvae bore into the soil and stay there from one to three years. The species hibernates only in the larval stage. C. elephas has a one-year life cycle, while a minor part of the population has a two or three-year life cycle.

scholarly journals Efficacy of Bacillus thuringiensis (Berliner) isolates on fig moth, Ephestia cautella (Walker) Larvae

2014 ◽  
Vol 11 (2) ◽  
pp. 943-951
Author(s):  
Baghdad Science Journal
Keyword(s):  
Bacillus Thuringiensis ◽  
Larval Stage ◽  
Filter Paper ◽  
Larval Instar ◽  
Ephestia Cautella ◽  
Larval Stages ◽  
The Third ◽  
Total Percentage ◽  
First Instar ◽  
Paper Method

The following dilution 5×10-1, 10-1, 10?2 , 10-3 gm/L for the indigenous isolate of Bacillus thuringiensis bacteria and the commercially isalate were used for experiments against the different stages of fig moth of E.cautella which exposed by filter paper method. The results showed that mortality of larval stages was increased with the increasing concentration of the biocide, in addition to increase in the mortality of the larval stages reached to the highest percentage in the third days of treatment of the larval stage in comparison with the first and second days of exposure. The results also showed that the sensitivity of larval stages was increased in first and second instars while reduced in the last instars .The high percentage of first instar mortality for the indigenous isolate in the concentration of 5×10-1 was 72.8% , while the low percentage of mortality showed in the concentration of 5×10-1 for the fifth instar larvae which was 13.3% in third days of treatment while a high percentage of mortality was showed for the first instar larvae for the commercially isulate in the concentration of 5×10-1 was 59.4% Furthermore, low percentage of mortality was shown in the concentration of 5×10-1 in fifth instar larval which was 8.3% in the third days of treatment. The results also showed that the indigenous isolated was more effective than the commercially produced bacteria for killing larval instars of fig moth E.cautella .The total percentage of larval instar mortality reached to 44.5 % after the third days of treatment in concentration 5×10-1 in the indigenous isolate , and it was 33.8 % in the commercially produced bacteria .

Woolf’s Imaginarium: Exploring Virginia Woolf’s Legacy to Contemporary Polish Culture

2018 ◽  
Author(s):  
Paulina Pająk
Keyword(s):  
Women Writers ◽  
Comparative Literature ◽  
Contemporary Literature ◽  
Feminist Studies ◽  
Women Intellectuals ◽  
The Third ◽  
Third Phase ◽  
Patriarchal Society ◽  
Polish Culture ◽  
A Minor

In recent years, the popularity of Virginia Woolf’s oeuvre has substantially increased in Poland. There has been little prior attempt to explain this phenomenon, although it could be beneficial to comparative literature and feminist studies. Therefore, the aim of the paper is to examine the significance of Virginia Woolf’s legacy to contemporary Polish culture, as well as the possible causes of the “Woolf’s Renaissance”. As Urszula Terentowicz-Fotyga has pointed out, until the late 1980s., Woolf remained relatively unknown and perceived as a minor modernist writer. Yet, the third phase of her reception (1990s-present) has brought a significant change, which finally led to the outburst of translations and popularity of Woolf’s works. One result of this “Woolf’s Renaissance” is the influence of Woolf’s legacy on contemporary literature and feminism in Poland. Woolf’s imaginairum has inspired many women writers, such as Joanna Bator, Sylwia Chutnik, Izabela Morska, and Maria Nurowska. It would seem that the popularity of Woolf among Polish women intellectuals stems from the similarity between her opposition to Victorian patriarchal society and their resistance against the radical Catholic conservatism and nationalism in Poland. Besides, the polyphony of Woolf’s oeuvre and the complexity of her biography invite the writers to enter the intertextual dialogue with the author.

LIFE CYCLE OF THE NYMPH FLY PALAEODIPTERON WALKERI IDE 1965 (DIPTERA: NYMPHOMYIIDAE) IN THE WHITE MOUNTAINS OF SOUTHERN QUÉBEC

1989 ◽  
Vol 121 (7) ◽  
pp. 603-607 ◽  
Author(s):  
P.P. Harper ◽  
Michel Lauzon
Keyword(s):  
Life Cycle ◽  
Larval Stage ◽  
White Mountains ◽  
Larval Instars ◽  
The Third ◽  
Summer Generation

AbstractCollections of larvae over 1 year in the River Clinton in the White Mountains of southern Québec indicated that Palaeodipteron walkeri Ide is bivoltine and that there are five larval instars. In April, larvae were in their fourth and fifth instars. Adults emerging in May and June gave rise to a summer generation in which most individuals emerged in August and September. The offspring of these adults, together with stragglers from the summer generation, formed an overwintering generation. Overwintering was completed in the larval stage, mainly the third and fourth instars. There was some growth in winter and development increased in the spring. Our data were compared with previously published observations; although no discrepancy occurred, our interpretation was different. Previous schemes proposed for the life cycle in this species were based on few specimens and lacked winter observations.

scholarly journals A revision of the 1783–1784 Calabrian (southern Italy) tsunamis

2006 ◽  
Vol 6 (6) ◽  
pp. 1053-1060 ◽  
Author(s):  
L. Graziani ◽  
A. Maramai ◽  
S. Tinti
Keyword(s):  
Southern Italy ◽  
Short Interval ◽  
Large Earthquake ◽  
Historical Sources ◽  
Strong Earthquakes ◽  
The Third ◽  
A Minor ◽  
The Mediterranean Basin ◽  
Seismic Crisis ◽  
Values Distribution

Abstract. Southern Italy is one of the most tsunamigenic areas in the Mediterranean basin, having experienced during centuries a large number of tsunamis, some of which very destructive. In particular, the most exposed zone here is the Messina Straits separating the coasts of Calabria and Sicily that was the theatre of the strongest Italian events. In 1783–1785 Calabria was shaken by the most violent and persistent seismic crisis occurred in the last 2000 years. Five very strong earthquakes, followed by tsunamis, occurred in a short interval of time (February–March 1783), causing destruction and a lot of victims in a vast region embracing the whole southern Calabria and the Messina area, Sicily. In this study we re-examined these events by taking into account all available historical sources. In particular, we focussed on the 5 and 6 February 1783 tsunamis, that were the most destructive. As regards the 5 February event, we found that it was underestimated and erroneously considered a minor event. On the contrary, the analysis of the sources revealed that in some localities the tsunami effects were quite strong. The 6 February tsunami, the strongest one of the sequence, was due to a huge earthquake-induced rockfall and killed more than 1500 people in the Calabrian village of Scilla. For this event the inundated area and the runup values distribution were estimated. Further, the analysis of the historical sources allowed us to find three new tsunamis that passed previously unnoticed and that occurred during this seismic period. The first one occurred a few hours before the large earthquake of 5 February 1783. The second was generated by a rockfall on 24 March 1783. Finally, the third occurred on 9 January 1784, probably due to a submarine earthquake.

scholarly journals Prevention of Periodontal Pocket Formation after Mandibular Third Molar Extraction Using Dentin Autologous Graft: A Split Mouth Case Report

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Alberto De Biase ◽  
Giulia Mazzucchi ◽  
Dario Di Nardo ◽  
Marco Lollobrigida ◽  
Giorgio Serafini ◽  
...  
Keyword(s):  
Case Report ◽  
Third Molar ◽  
Periodontal Pocket ◽  
Pocket Depth ◽  
Second Molar ◽  
The Third ◽  
Third Molar Extraction ◽  
Probing Pocket Depth ◽  
Surgical Extraction ◽  
A Minor

Surgical extraction of the third molar can often result in the development of a periodontal pocket distal to the second molar that could delay the healing, and the socket could be colonized by bacteria and lead to secondary abscesses, or it may cause mobility or hypersensitivity. The aim of this case report is to assess the efficacy of a dentin autograft in the prevention of periodontal dehiscences after the surgical extraction of the third molar, obtained by the immediate grinding of the extracted tooth. A healthy 18-year-old male patient underwent surgery of both impacted mandibular molars: right postextractive socket was filled with grinded dentin; then, the left one was filled with fibrin sponge. The patient was followed up for six months, and clinical and radiographic assessment were performed: measurements of plaque index (PI), bleeding on probing (BOP), gingival index (GI), clinical attachment level (CAL), and probing pocket depth (PPD) were done before surgery and repeated at 90 and 180 days after the extractions. Measurements made at six months after the surgery revealed that the grafted site was characterized by a minor depth of the pocket if compared with the nongrafted site, with no clinical/radiographic signs of complications.

scholarly journals The Developmental Role of warthog, the Notch Modifier Encoding Drab6

1999 ◽  
Vol 146 (4) ◽  
pp. 731-740 ◽  
Author(s):  
Karen Purcell ◽  
Spyros Artavanis-Tsakonas
Keyword(s):  
Notch Signaling ◽  
Point Mutation ◽  
Larval Stage ◽  
Essential Gene ◽  
Multicellular Organism ◽  
The Third ◽  
Modifying Effect ◽  
Developmental Role ◽  
Golgi Network

The warthog (wrt) gene, recovered as a modifier for Notch signaling, was found to encode the Drosophila homologue of rab6, Drab6. Vertebrate and yeast homologues of this protein have been shown to regulate Golgi network to TGN trafficking. To study the function of this protein in the development of a multicellular organism, we analyzed three different warthog mutants. The first was an R62C point mutation, the second a genomic null, and the third was an engineered GTP-bound form. Our studies show, contrary to yeast, that the Drosophila homologue of rab6 is an essential gene. However, it has limited effects on development beyond the larval stage. Only the mechanosensory bristles on the head, notum, and scutellum are affected by warthog mutations. We present models for the modifying effect of Drab6 on Notch signaling.

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