The life history of Hysterothylacium analarum Rye and Baker, 1984 (Nematoda: Anisakidae) in Lepomis gibbosus (Pisces: Centrarchidae) in southern Ontario, Canada

1992 ◽  
Vol 70 (8) ◽  
pp. 1576-1584
Author(s):  
Leslie A. Rye ◽  
Michael R. Baker
Keyword(s):  
Seasonal Pattern ◽  
Late Summer ◽  
Intestinal Lumen ◽  
Lepomis Gibbosus ◽  
Fourth Stage ◽  
Larval Stages ◽  
Second Stage ◽  
Third Stage ◽  
History Of ◽  
Gravid Females

Larval stages of Hysterothylacium analarum are described from Lepomis gibbosus in Dawson Pond, Ontario (45°10′N, 78°50′W). Second-stage larvae were easily distinguished from all other stages by the presence of a conical boring tooth. Third-stage larvae lacked both a boring tooth and lips. Fourth-stage larvae had well-developed lips. The ratio of ventricular appendage length to intestinal caecum length varied greatly between larval stages and adults. Prevalence and intensity of larval stages and adult H. analarum showed a distinct seasonal pattern, with one generation of adult worms per year. In spring, third-stage larvae left nodules on the intestinal serosa of L. gibbosus and migrated to the intestinal lumen, where they rapidly moulted to the fourth-stage and then to adult worms. Eggs collected from gravid females developed to second stage larvae in approximately 5 days under laboratory conditions. In natural infections in the late summer second-stage larvae were found in nodules on the serosa and in the mesentery. Larvae apparently moulted to the third stage and overwintered in the nodules as third-stage larvae.

Studies on the life-history of Bunostomum phlebotomum (Railliet, 1900), a hookworm parasite of cattle

Parasitology ◽  
1946 ◽  
Vol 37 (3-4) ◽  
pp. 192-201 ◽  
Author(s):  
J. F. A. Sprent
Keyword(s):  
Infective Larva ◽  
Stage Larva ◽  
Fourth Stage ◽  
Larval Stages ◽  
The Third ◽  
Third Stage ◽  
History Of ◽  
Time Required ◽  
Cutaneous Blood ◽  
Fourth Stage Larva

A description is given of the processes of copulation, formation of the egg and spermatozoon, cleavage, embryogeny and hatching in B. phlebotomum. These processes were found to be essentially similar to those in other strongyle nematodes.The anatomy of the first three larval stages is described and the observations of Conradi & Barnette (1908) and Schwartz (1924) were largely confirmed.Penetration of the skin of calves by the infective larva was observed histologically. The larvae were found to have reached the dermis within 30 min. and to have penetrated the cutaneous blood vessels within 60 min. of application to the skin. The larvae were found in the lung where the third ecdysis was in progress 10 days after penetration of the skin. A description is given of the growth of the third-stage larva in the lung, the changes which take place during the third ecdysis, and the anatomy of the fourth-stage larva.The fourth-stage larvae exsheath in the lungs and travel to the intestine. After a period of growth in which sexual differentiation takes place, the fourth ecdysis occurs and the adult parasite emerges. The time required for the attainment of maturity was found to be somewhere between 30 and 56 days after penetration of the skin.This paper was written at the Ministry of Agriculture and Fisheries Veterinary Laboratories, Wey-bridge, and the writer would like to express his gratitude to the Director, Prof. T. Dalling, also to Dr W. R. Wooldridge, chairman of the Council of the Veterinary Educational Trust for their help and encouragement. The writer's thanks are also due to Dr H. A. Baylis, Prof. R. T. Leiper and Dr E. L. Taylor for their advice and help on technical points, and to Mr R. A. O. Shonekan, African laboratory assistant, for his able co-operation.

A Third Kind of Feminist Reading: Toward a Feminist Sociology of Biblical Hermeneutics

2010 ◽  
Vol 9 (1) ◽  
pp. 9-32
Author(s):  
Susanne Scholz
Keyword(s):  
Gender Roles ◽  
Biblical Studies ◽  
Fourth Stage ◽  
Biblical Hermeneutics ◽  
Second Stage ◽  
The Past ◽  
Feminist Sociology ◽  
Third Stage ◽  
History Of ◽  
Beginning Students

This article proposes that the next step in feminist biblical studies requires, even demands, the development of sociologically framed paradigms. It illustrates this proposal for such a third kind of reading with an examination of the interpretation history of Genesis 2-3 during the past forty years. Five hermeneutical stages emerge. They move from a first stage on feminist interpretations, to a second stage on deconstructive responses, to a third stage of interpretations that reassert androcentric meaning, to a fourth stage on the Christian Right’s insistence on patriarchal gender roles, and finally to a fifth stage on commercialized biblical meanings in the Western media. This analysis shows that a feminist sociology of biblical hermeneutics explains, even to beginning students, the connections between biblical hermeneutics and society, because it conceptualizes biblical texts and interpretation histories as hermeneutically dynamic, politically and religiously charged conversations concerning socio-political practices.

The life history and development ofAmplicaecum robertsi, an ascaridoid nematode of the carpet python (Morelia spilotes variegatus). I. Morphology and functional significance of larval stages

Parasitology ◽  
1963 ◽  
Vol 53 (1-2) ◽  
pp. 7-38 ◽  
Author(s):  
J. F. A. Sprent
Keyword(s):  
Functional Significance ◽  
Structural Changes ◽  
Adult Stage ◽  
Reproductive Organs ◽  
Fourth Stage ◽  
Laboratory Rats ◽  
Larval Stages ◽  
Second Stage ◽  
The Third ◽  
Third Stage

The development ofAmplicaecum robertsihas been followed from the egg to the adult stage using laboratory mice and rats as intermediate hosts. The eggs were found to be resistant to desiccation and would develop under water; they were infective to mice after culturing for 18 days after removal from the uterus.Completion of the first moult occurred after hatching of the eggs in the intestine. Within 6 hr. of infection second-stage larvae had reached the liver. They also appeared in the lungs and carcass, but after 2 days were mostly confined to the liver.At 5–7 days after infection larvae underwent a period of lethargy followed by the second moult and the third-stage larvae commenced a period of growth reaching a length of 79 mm. at 28 weeks after infection in the liver of mice. In rats the growth of the larvae was slower for the first 2 months, but eventually they reached more or less the same proportions as in mice. The intestinal caecum appeared at a length of 3–4 mm., but there was no development of the reproductive organs throughout the third stage and no evidence of the third moult in rodents.Fifty carpet snakes were autopsied and searched for larvae and adults ofA. robertsi; in two snakes third-stage larvae were found in the aorta; in one snake the third moult was observed in the wall of the stomach and oesophagus; in three snakes the fourth moult was observed in the wall of the stomach; in twenty-six snakes adults were found.Experimental infection of laboratory-reared carpet snakes showed that infection with embryonated eggs resulted in second-stage larvae in the tissues which did not develop further. Infection with third-stage larvae, resulted in two distinct migratory patterns depending upon the maturity of the larvae administered. Larvae from the liver of laboratory rats which had been infected less than 12 weeks previously, migrated to various tissues, especially the aorta, of the snake, where they remained coiled in cysts filled with clotted blood for periods up to 112 days. Growth occurred within these cysts, but no evidence of moulting was observed. In contrast, larvae from the liver of laboratory rats infected 12 weeks or more previously, and from mice infected for 8 weeks or more, underwent the third moult in the wall of the oesophagus and stomach of the snake.With the onset of the fourth stage, the development of the reproductive organs became evident and continued during the fourth stage. It appeared that the fourth stage may occur in two phases, possibly depending on the size of the third-stage larva at the time of ingestion. Some experimental infections indicated that third-stage larvae may give rise to attached fourth stage larvae, probably capable of active growth. Other observations indicated that fourth-stage larvae may remain encapsulated in the wall of the stomach or oesophagus until sex differentiation is completed, after which the fourth moult occurs and the adult parasite emerges, leaving two sheaths of the same length within the capsule.The functional significance of each of the larval stages is discussed and it was concluded:—that the first-stage larva is one of tissue differentiation, whereby development proceeds to the infective stage; that the second stage represents a migratory phase without structural changes; that the third stage represents a growth phase, characterized by considerable increase in size, but without further radical changes in differentiation.In contrast, the fourth stage is characterized by absence of growth, inability to migrate, and by marked structural changes in the reproductive organs, whereby the sexes are differentiated. Evidently this development may take place while the fourth stage is attached to the wall of the stomach or oesophagus, or while the larva remains in the capsule in a state of quiescence.The fourth moult may occur in the attached state, but usually occurs within the capsule. After it is completed, the adult may remain for an indefinite period within the capsule with the two sheaths of the third and fourth stage. The emergence of the adult worms may be influenced by the arrival of food in the stomach. Once this phase is initiated, both growth and reproductive activity ensue during the adult stage.This work was financed by a research grant from the University of Queensland. The writer wishes to acknowledge the valuable assistance of Miss Ann Pritchard.

Observations on the Life History of Triodontophorus tenuicollis, a Nematode Parasite of the Horse

1925 ◽  
Vol 3 (1) ◽  
pp. 1-14 ◽  
Author(s):  
R. J. Ortlepp
Keyword(s):  
Buccal Capsule ◽  
Stage Larva ◽  
Fourth Stage ◽  
Free Living ◽  
Larval Stages ◽  
Third Stage ◽  
History Of ◽  
Last Stage ◽  
Marked Resistance ◽  
Fourth Stage Larva

1. During the free-living development the larvæ of Triodontophorus tenuicollis undergo two moults separating three larval stages, the last stage remaining ensheathed in the cuticule of the previous stage.2. The development takes about four days when the eggs are cultured in horse fæces and charcoal at 26° C.3. The infective or third stage larvæ are climbers, and also show a marked resistance to desiccation ; they can also withstand variations in temperature from – 8° C. to 60° C.4. They do not penetrate skin.5. Infection of the host is probably via the mouth during grazing.6. The fourth-stage larva is described. It is free in the lumen of the colon, possesses a well-marked larval buccal capsule and three stout and pointed œsophageal teeth. Sex differences are now present.7. The adult buccal capsule develops in the form of a vesicle round the base of the larval buccal capsule.8. The probable mode of its parasitic development is given.9. A fourth-stage larva, probably that of either T. brevicauda or T. serratus, is described.

Manajemen Humas Radio Rama 104.7FM Bandung dalam Meningkatkan Pemasang Iklan

2020 ◽  
Vol 2 (3) ◽  
pp. 301-320
Author(s):  
Muhamad Sidik Triadi ◽  
Irfan Sanusi ◽  
Lida Imelda Cholidah
Keyword(s):  
Public Relations ◽  
Research Method ◽  
Fourth Stage ◽  
Case Study Method ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
Program Innovation ◽  
Descriptive Qualitative

ABSTRAK Penulisan ini bertujuan untuk mengetahui manajemen humas radio Rama FM Bandung dalam meningkatkan pemasang iklan dari mulai tahapan perencanaan, pengorganisasian, pelaksanaan sampai dengan pengawasan, metode penelitian ini menggunakan metode kualitatif untuk mengetahui karakteristik  dengan cara berinteraksi secara langsung dan mendalam mengenai sebuah program dan ringkasan yang digambarkan pada konteks di atas mendasari untuk menggali dan mendeskripsikan kegiatan-kegiatan yang dijalankan oleh radio Rama FM Bandung dalam meningkatkan pemasang iklan. Analisis penelitian ini menggunakan deskriptif kualittaif. Hasil penelitian menunjukan bahwa kegiatan manajemen humas radio Rama FM Bandung dalam meningkatkan pemasang iklan dimulai pada tahapan pertama yaitu perencanaan pembuatan proposal, inovasi program, pengemasan iklan dan penyampaian iklan. Tahapan kedua yaitu pengorganisasian dengan komunikasi, membentuk team, pertimbangan tugas, dan persetujuan dari pimpinan. Tahapan ketiga yaitu pelaksanaan sesuai tugas, presentasi, pelaksanaan tugas sesuai susunan, pelaksanaan kegiatan. Tahap keempat yaitu pengawasan koordinasi, kinerja team yang bertugas, program yang berlangsung, dan pengawasan proses sebagai bahan evaluasi. Kata Kunci : Manajemen Humas; Meningkatkan; Pemasang Iklan. ABSTRACT This writing aims to determine radio public relations management Rama FM Bandung in increasing advertisers from the stages of planning, organizing, implementation to supervision, this research method uses a case study method to determine the characteristics by interacting directly and deeply about a case and summary illustrated in the above context underlying to explore and describe the activities carried out by radio Rama FM Bandung in improving advertisers. The analysis of this study uses descriptive qualitative. The results showed that the radio public relations management activities of Rama FM Bandung in increasing advertisers began in the first stage, namely the planning of making proposals, program innovation, packaging of advertisements and delivery of advertisements. The second stage is organizing with communication, forming teams, considering assignments, and approval from the leadership. The third stage is the implementation of tasks, presentations, implementation of tasks according to the arrangement, implementation of activities. The fourth stage is monitoring coordination, the performance of the team in charge, the ongoing program, and monitoring the process as an evaluation material. Keywords : Management Public Relations; Improve; Advertiser.

Hromatska terminologija u rusinskom i srpskom jeziku

2021 ◽  
Vol 64 (2) ◽  
pp. 309-320
Author(s):  
Mihajlo P. Fejsa
Keyword(s):  
Domestic Animals ◽  
German Language ◽  
Official Language ◽  
Fourth Stage ◽  
Second Stage ◽  
The Third ◽  
Stage Of Development ◽  
Basic Colour ◽  
Third Stage ◽  
Colour Terms

In this paper, the author compares chromatic terms in Ruthenian and Serbian. He focuses on the basic colour terms according to Berlin and Kay: white, black, red, green, yellow, blue, brown, purple, pink, orange, and grey. They have equivalents in both languages: Ruthenian bila – Serbian bela, čarna – crna, červena – crvena, željena – zelena, žovta / žolta – žuta, belava – plava, braon – braon, lilova – ljubičasta, celova – roze, pomarančecova /poma- randžecova – narandžasta, šiva – siva. The criterion of one-morpheme word is not appli- cable to the terms lilova, celova, and pomarančecova /pomarandžecova in Ruthenian, and ljubičasta and narandžasta in Serbian. It is applicable to the terms bila, čarna, červena, željena, žovta / žolta, belava, braon, and šiva. With the exception of braon, all these terms are derived from the Proto-Slavic language (*bеlъ, *čьrnъ, *čьrvenъ, *zelenъ, *žltъ, *polvь, and *sivъ). As far as the Berlin–Kay’s universal of seven phases of colour formation is con- cerned, our study of chromatic terminology confirms it. In accordance with the supposed first stage of development, the Ruthenian language has bila and čarna; according to the second stage, Ruthenian has červena; in accordance with the third stage, Ruthenian has že- ljena or žovta / žolta; according to the fourth stage, Ruthenian has žovta / žolta or željena; in accordance with the fifth stage, Ruthenian has belava; according to the sixth stage, it has braon; and in accordance with the seventh stage (even if we leave aside the multi-mor- pheme terms lilova, celova, and pomarančecova /pomarandžecova), it has šiva. Generally speaking, the usage of the terms is identical in both investigated languages but there are several differences (e.g. cibulja – beli luk, željena pasulja – boranija). The most frequent suffixes are -asta and -ista in Ruthenian, and -asta in Serbian.Most of the chromatic terms are of Slavic origin but there are several borrowings used for nuance purposes in recent decades, e.g. azurna, teget, akvamarin, tirkizna, and others. Some borrowings remain unchanged, e.g. in both languages blond, braon, drap, krem, bež, and oker, and only in Serbian lila and roze. Hungarian was the official language until the first decades of the 20th century (until the collapse of the Austro-Hungarian Monarchy in 1918), during which Ruthenian–Hungarian bilingualism reigned. That is the reason why several Hungarian colour names are found, e.g. in surnames (the Ruthenian surname Barna comes from Hungarian barna ‘brown’, Fekete/Feketa is from fekete ‘black’, and Vereš is from vörös ‘red’) and in the names of domestic animals (the Ruthenian horse name pejka [Serbian riđan] comes from Hungarian pej ‘brown’ and šarga [Serbian žutalj] is from sár- ga ‘yellow’). The general name for ‘colour’ comes from the German language (Ruthenian farba is from German Farbe).

Epizootiology, pathology, and description of Eustrongylides tubifex (Nematoda: Dioctophymatoidea) in fish

1988 ◽  
Vol 66 (10) ◽  
pp. 2212-2222 ◽  
Author(s):  
Lena N. Measures
Keyword(s):  
Yellow Perch ◽  
Perca Flavescens ◽  
Infected Fish ◽  
Lepomis Gibbosus ◽  
Fourth Stage ◽  
Intermediate Hosts ◽  
Third Stage ◽  
Rock Bass ◽  
Ambloplites Rupestris ◽  
Fish Hosts

In Guelph Lake, a man-made reservoir in Ontario, Canada, prevalence of larval Eustrongylides tubifex in pumpkinseed (Lepomis gibbosus), rock bass (Ambloplites rupestris), and yellow perch (Perca flavescens) was 12.9% and mean intensity ranged from 1 to 1.8. Larvae were encapsulated on the mesentery of fish. Pumpkinseed and yellow perch were the important fish hosts in Guelph Lake as most larvae in these fish were alive. In contrast, 40% of larvae in rock bass were dead and calcified. Third- and fourth-stage larvae from naturally infected fish are described. Larvae in the three species of fish elicited a granulomatous inflammatory reaction. Attempts to transfer third-stage larvae from experimentally infected oligochaetes and third-stage larvae from naturally infected fish to laboratory-reared pumpkinseed were unsuccessful. Fourth-stage larvae from naturally infected fish were transferred successfully to pumpkinseed. Eutropic lakes such as Guelph Lake are particularly suitable enzootic areas because of the abundant populations of tubificid intermediate hosts and the presence of fish hosts such as pumpkinseed and perch. The advanced stage and development of larvae (to the fourth stage) in fish likely represents an adaptation for a parasite that occurs in a migratory host such as Common Mergansers (Mergus merganser), which frequent Guelph Lake for only about 1 month in spring and fall.

scholarly journals N.I. KAREEV ON THE DIALOGUE OF CULTURES IN LINE WITH THE VIEWS OF WESTERN EUROPEAN PHILOSOPHERS OF XVIII-XIX CENTURIES

2020 ◽  
pp. 150-161
Author(s):  
Елена Евгеньевна Михайлова ◽  
Надежда Александровна Соболева
Keyword(s):  
World History ◽  
Philosophy Of History ◽  
Second Stage ◽  
Third Stage ◽  
History Of ◽  
Classical Philosophy ◽  
Western European ◽  
Relationship Of ◽  
Different Cultures ◽  
The Relationship

Рассматривается диалог культур в трактовке западноевропейских мыслителей XVIII-XIX вв. Показано, что изучение истории взаимоотношений различных, в своем основании и формах, культур прошло три содержательных этапа: первый - начало «разговора» о взаимоотношении культур и постановка понятий «Запад» и «Восток» (просветители); второй - смещение вопроса о дуальности «Запад - Восток» на уровень дилеммы философии истории и всемирной истории (представители немецкой классической философии); третий - применение новой, многофакторной методологии (позитивисты). Сделан вывод о том, что русский историк и представитель позитивистской философии истории Н.И. Кареев дал конструктивно-критическую оценку воззрениям западноевропейских мыслителей на проблему взаимоотношений разных культур и творчески использовал их идеи в построении своей философии истории. The article deals with the dialogue of cultures in the interpretation of Western European thinkers of the XVIII-XIX centuries. It is shown that the study of the history of relations between cultures, which differ in their basis and forms, has passed three meaningful stages. The first stage is the beginning of a «conversation» about the relationship of cultures and the formulation of the concepts of «West» and «East» (enlighteners). The second stage is characterized by a shift of the question of the duality of «West-East» to the level of the dilemma of the philosophy of history and world history (representatives of German classical philosophy). The third stage is the application of a new, multi-factor methodology (positivists). It is concluded that the Russian historian and representative of the positivist philosophy of history N.I. Kareev gave a constructive and critical assessment of the views of Western European thinkers on the problem of relations between different cultures and creatively used their ideas in building his philosophy of history.

scholarly journals Method for consolidate representation of fossil objects dating

2020 ◽  
pp. 150-158
Author(s):  
D.I. Yakushev
Keyword(s):  
Moisture Content ◽  
Sampling Interval ◽  
Simple Rule ◽  
The Internet ◽  
Fourth Stage ◽  
Time Intervals ◽  
Second Stage ◽  
The Third ◽  
Dating Methods ◽  
Third Stage

So far, methods of dating fossil objects have allowed us to obtain a large amount of data that characterize the moisturization of our planet’s areas during different time intervals. At the same time, in some cases, fossil objects contain information about the characteristics of the climate of the epoch of their existence. The available dating is scattered and does not allow us to get an overall picture of the changes occurred. Therefore, the developed method of aggregate representation of dates is relevant. Scientific materials containing the desired dating are mainly presented on the Internet. Therefore, the target of the first stage is to identify the publications of interest. At the second stage, the dating found and its characteristics are summarized in table 1. At the third stage, the data in table 1 is converted to table 2, reflecting the change in the moisture content of regions with a 100 years sampling interval. At the fourth stage, a simple rule is applied to exclude two multidirectional trends in each cell of table 2. As a result of exclusion, only unidirectional signs remain in each cell that qualitatively characterize the moisture content of the studied regions. It seems that the dating found in a significant minority should be questioned. However, cases in which the number of exceptions exceeds the number of non-excluded characters require additional research. The proposed method is not limited either by the number of studies involved or by the dating methods used. The scientific novelty of the proposed method consists in the aggregate representation of known dating of fossil objects containing information about the characteristics of the climate of the epoch of its existence. The objectivity of the results obtained is based on the use of a variety of independent dating of fossil objects obtained by different methods for different periods and regions. The reliability of the results obtained will increase with the number of dating involved in the analysis.

scholarly journals HISTORY OF THE CHANNEL SYSTEMS REORGANIZATION OF THE KAMA-KELTMA LOWLAND IN THE LATE PLEISTOCENE – HOLOCENE

2020 ◽  
pp. 6-17
Author(s):  
Nikolai N. Nazarov ◽  
◽  
Sergei V. Kopytov ◽  
Keyword(s):  
Late Pleistocene ◽  
Radiocarbon Dating ◽  
Large Scale ◽  
Bottom Relief ◽  
Short Term ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
History Of ◽  
Channel Systems

The analysis of the actual data on the age and stages of the channel systems formation in the Kama-Keltma lowland was based on the altitudinal differentiation of different stages of the relief and the results of radiocarbon dating of organics from the channel and floodplain facies. Late Pleistocene lake terrace is the highest level in the Upper Kama depression and Keltma hollow. The research into the geomorphological structure and age of deposited materials, with a particular focus on separate elements of the Kama-Keltma lowland erosive and accumulative relief, indicates the existence of six stages of the channel systems formation (reorganization). The first stage (end of the Kalinin stadial) is the Chepets hollow formation. The hollow was preserved after large-scale changes in the bottom relief of the Upper Kama depression. The second stage (Mologa-Sheksna interstadial) is the first Kama terrace formation. The third stage (Ostashkov stadial, 20-18 ka) is the period of the runoff hollow formation (including the ‘large terrace hollow’), which actively dissected the surface of aeolian landforms. The fourth stage (LGM, 18-10 ka) is the formation of the macromeanders of the South Keltma, Pilva, and Timsher, as well as the multi-arm channel of the Kama during alternating periods of relatively short-term warming and cooling. The fifth stage is the wide Kama floodplain formation in the Preboreal – Subboreal, represented by segmental generations. The sixth stage (modern) is characterized by the ‘straightening’ of the Kama channel – the formation of a relatively straight channel throughout the Kama-Keltma lowland.

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