Studies on the Biology of some Oxyurid Nematodes. II. The Hatching of Eggs and Development of Aspiculuris tetraptera Schulz, within the Host

1966 ◽  
Vol 40 (3-4) ◽  
pp. 261-268 ◽  
Author(s):  
A. O. Anya
Keyword(s):  
Life Cycle ◽  
The Third ◽  
Third Stage ◽  
Lower Intestine ◽  
Aspiculuris Tetraptera

A re-examination of the life-cycle of the mouse pinworm, Aspiculuris tetraptera has shown that the infective eggs hatch in the lower intestine or in the caecum of the host, to release the first stage larvae. After moulting, these larvae migrate into the crypts of the colon; those larvae which do not migrate into the crypts apparently pass out of the host with the faeces. The larvae in the crypts, presumably the third stage, later return to the lumen of the colon where they mature into adults. Males are mature by about the 20th day and females by the 23rd day. Viable eggs are released by the females 24 days after infection.

Description of the pupa and redescription of the third instar of Phileurus valgus (Olivier) (Coleoptera: Scarabaeidae: Dynastinae: Phileurini)

Zootaxa ◽  
2017 ◽  
Vol 4290 (3) ◽  
pp. 571
Author(s):  
MARIO G. IBARRA-POLESEL ◽  
NESTOR G. VALLE ◽  
JHON C. NEITA-MORENO ◽  
MIRYAM P. DAMBORSKY
Keyword(s):  
United States ◽  
Life Cycle ◽  
West Indies ◽  
New World ◽  
Common Species ◽  
Southern United States ◽  
Immature Stages ◽  
The West ◽  
The Third ◽  
Third Stage

Phileurus valgus (Olivier) (Coleoptera: Scarabaeidae: Dynastinae: Phileurini) is a common species widely distributed from the southern United States to Argentina and the West Indies. In this work the immature stages are described and illustrated based on specimens from Argentina. A key to the known third-stage larvae of New World Phileurini species is provided and updated. Notes on the life cycle and natural history are also included. 

scholarly journals Duration of life-cycle of three parasitic hymenoptera on Saissetia oleαe (Bernard) growing on two different host plants.

2017 ◽  
Vol 3 ◽  
pp. 63
Author(s):  
M.V. Macropodi
Keyword(s):  
Life Cycle ◽  
Host Plants ◽  
Correlation Equation ◽  
Scale Insect ◽  
Nerium Oleander ◽  
The Third ◽  
Parasitic Hymenoptera ◽  
Third Stage ◽  
Release Area ◽  
The Mean

In this work the duration of the life-cycle of Metaphycus helvolus (Comp.) (parasite mainly on the third stage), Μetaphycus affinis stanley (Comp.) (parasite mainly on the third stage) and Μetaphycus lounsburyi (How.) (parasite mainly on the fourth stage) (Hymenoptera: Encyrtidae) on S. οleae, developed on different substrates, i.e. potato sprouts and plants of Nerium oleander, under laboratory conditions was determined. Among the Hymenoptera parasitizing S. oleae on Corfu, M, helvolus and M. lounsburyi, are of particular importance M. affinis stanley was introduced in Corfu in 1976 and despite the fact that the population of S. οleae in the release area was practically eliminated from other factors shortly after the release of the parasite, there is evidence that the parasite was finally established. The above parasites can be successfully reared on S. οleae developed both on potato sprouts and Nerium oleander. The study was carried out at 23±1°C, 65-70% R.H. and 12 hours of artificial light per day. For each species, 3 potato sprouts and three plants of Nerium oleander in pots infested with S. οleae were placed in each 60X30X40 cm cage. The host insects were oviposited in by adult parasites introduced into the cages and left there for two days. The number of emerging adult parasites in each cage was recorded daily (a total number of adults emerged per cage varied from 23 to 195) and the time taken for 50% emergence was calculated from the correlation equation by plotting the cumulative percentage of adults emerged against time. For M. helvolus the mean duration time of the life cycle was estimated to be 19.4 days on scales developed on potato sprouts and 15.1 days on scales developed on N. oleander. For M. affinis stanley the relevant estimates were 18.8 days and 23.4 days, respectively, while for M. lounsburvi the estimates were 21.3 and 18.6 days, respectively. For M. helvolus and M. lounsburyi the duration of the life cycle was shorter when the host insect developed on Nerium plants than on potato sprouts. For M. affinis stanley the reverse was true. These differences show the effect of the host of S. oleae on the time of development of the parasites, possibly reflecting the differences of the scale insect developed on different hosts as food quality for the parasites.

scholarly journals KANTOR EQUIPOISE: MENYEIMBANGKAN KEHIDUPAN BEKERJA DAN BERKELUARGA

2020 ◽  
Vol 1 (2) ◽  
pp. 1979
Author(s):  
Judelia Kusuma Halim ◽  
Sidhi Wiguna Teh
Keyword(s):  
Life Cycle ◽  
Life Goals ◽  
Office Building ◽  
Main Concept ◽  
The Third ◽  
Parents And Children ◽  
Third Stage ◽  
Zone Division ◽  
Color Texture

Millennials behavior is currently being shaped by the life cycle effect, in which they are setting out for the third stage of life with a focus on career improvement and starting a family. Equipoise Office is a space facilitating millenials in achieving and balancing those life goals. Equipoise Office is an office building, divided into two-towers by applying transprogramming in design to produce a new program that can be experienced by millennials. It is designed in a form that symbolizes parents and children as the main concept that reflects the mix of programs in it. The second skin is added as an element that aids in reducing heat and light that enters the building. Zone division is designed based on user analysis in accordance with the method used, intended to provide space experience to users and visitors efficiently with the embodiment of architecture in the form of light, shadow, material, color, texture, and shape of space. Abstrak Saat ini, perilaku generasi milenial dipengaruhi oleh life cycle effect, di mana mereka sedang memulai di tahap kehidupan ketiga dengan fokus meningkatkan karir serta memulai kehidupan berkeluarga. Kantor Equipoise merupakan sebuah wadah bagi mereka untuk dapat mencapai dan menyeimbangkan tujuan kehidupan tersebut. Kantor Equipoise merupakan sebuah kantor yang terbagi menjadi 2 tower dengan penerapan transprogramming dalam desain untuk menghasilkan sebuah program baru yang dapat dialami oleh generasi milenial. Kantor Equipoise didesain dengan bentuk yang melambangkan orang tua dan anaknya sebagai konsep utama yang mencerminkan paduan program di dalamnya. Penambahan second skin ditujukan sebagai elemen yang membantu mengurangi panas dan cahaya yang masuk ke dalam bangunan. Desain pembagian zona didasarkan pada analisis pengguna sesuai dengan metode yang digunakan, bertujuan untuk memberikan pengalaman ruang kepada pengguna maupun pengunjung secara efisien dengan perwujudan arsitektur berupa cahaya, bayangan, material, warna, tekstur, serta bentuk ruang.

On the life history ofHepatojarakus malayae(Nematoda: Trichostrongylidae), a parasite of the feral rat in Malaysia

1974 ◽  
Vol 48 (4) ◽  
pp. 293-310 ◽  
Author(s):  
C. K. Ow-Yang
Keyword(s):  
Young Adults ◽  
Life History ◽  
Life Cycle ◽  
Bile Duct ◽  
Peninsular Malaysia ◽  
The Third ◽  
White Rats ◽  
Third Stage ◽  
Morula Stage ◽  
Migratory Route

AbstractAdults ofHepatojarakus malayaelive in the bile duct of many species ofRattusin Peninsular Malaysia, ine life cycle of this parasite was studied in laboratory white rats. Eggs were passed out with the faeces at the early morula stage and hatched within 15 hours, giving rise to the first stage larvae. These developed to the third stage in about 36 hours and these were given orally to new rats in experimental infections. The migratory route of the larvae from the gut to the liver was traced. Penetration into the host appeared to be confined mainly to the fundic wall of the stomach. The larvae presumably followed the portal route to the uver. Here the final moult occurred before the young adults moved into the biliary passages.

THE LIFE HISTORY OF MOLINEUS BARBATUS CHANDLER, 1942

1961 ◽  
Vol 39 (5) ◽  
pp. 579-587 ◽  
Author(s):  
S. P. Gupta
Keyword(s):  
Life History ◽  
Small Intestine ◽  
Life Cycle ◽  
Stage Larva ◽  
Highly Pathogenic ◽  
Experimental Host ◽  
The Third ◽  
Third Stage ◽  
History Of

Using the ferret as an experimental host, the life cycle of Molineus barbatus was shown to be direct. All stages are described. The third-stage larva infects the host orally or percutaneously and subsequent stages develop in the mucosa of the small intestine. The male matures earlier than the female and eggs are laid in 8 to 13 days after infection. The parasite is highly pathogenic to ferrets but apparently less so to skunks and racoons.

Life cycle of Crenosoma petrowi (Nematoda: Metastrongyloidea) from black bears (Ursus americanus)

1994 ◽  
Vol 72 (2) ◽  
pp. 300-302 ◽  
Author(s):  
Edward M. Addison ◽  
Grant A. Fraser
Keyword(s):  
Life Cycle ◽  
Vulpes Vulpes ◽  
Ursus Americanus ◽  
Prepatent Period ◽  
Black Bears ◽  
Mephitis Mephitis ◽  
Red Foxes ◽  
The Third ◽  
Third Stage ◽  
Striped Skunks

First-stage larvae of Crenosoma petrowi Morozov, 1939 from feces of black bears (Ursus americanus) developed to the third stage in the gastropod Mesodon thyroidus. In snails held at 23.5 °C, the first and second moults occurred on days 6–7 and 9–11, respectively, after infection. The prepatent period of C. petrowi was 19–25 days in five experimentally infected black bears. Both times of first and second moults and the prepatent periods are similar among species of Crenosoma. Crenosoma petrowi did not produce patent infections in, and no nematodes were recovered from, experimentally infected striped skunks (Mephitis mephitis), raccoons (Procyon lotor), or red foxes (Vulpes vulpes).

scholarly journals The morphology of the preimaginal stages of Cleopomiarus micros (Germar, 1821) (Curculionidae, Coleoptera) and notes on its biology

ZooKeys ◽  
2018 ◽  
Vol 798 ◽  
pp. 45-62 ◽  
Author(s):  
Ewelina Szwaj ◽  
Jacek Łętowski ◽  
Krzysztof Pawlęga
Keyword(s):  
Life Cycle ◽  
Host Plant ◽  
Species Differences ◽  
Current Knowledge ◽  
The Body ◽  
Larval Body ◽  
The Third ◽  
Preimaginal Stages ◽  
Third Stage ◽  
Original Information

As yet little is known of the bionomics of weevils of the genus Cleopomiarus Pierce, 1919; current knowledge is limited to data on the morphology and biology of the preimaginal stages of certain species. This paper includes original information on the life cycle of Cleopomiarusmicros (Germar, 1821). It presents the morphology of the egg, last larva (L3) and pupa. Data on the host plant (Jasionemontana L.) and breeding plant (Campanulapatula L.) and on the oviposition and phenology of the species are updated. The anatomy of the third-stage larva of C.micros shares certain traits with other species of the tribe Mecinini Gistel, 1848. Comparison of the morphology of preimaginal stages of C.micros with those previously described for other species of the genera Cleopomiarus and Miarus Schönherr, 1826 – previously considered the same genus – reveals species differences in larval body length, colour of the body and epicranium, and chaetotaxy of head and body.

scholarly journals Biological and morphological aspects of Plectris aliena (Coleoptera: Melolonthidae) in sugarcane in Brazil

2021 ◽  
Vol 61 ◽  
pp. e20216113
Author(s):  
Elias Soares Gomes ◽  
Crébio José Ávila ◽  
Mariana Alejandra Cherman
Keyword(s):  
Life Cycle ◽  
Seasonal Distribution ◽  
Light Traps ◽  
Mato Grosso ◽  
The Third ◽  
Sugarcane Crop ◽  
Morphological Aspects ◽  
Third Stage ◽  
Mato Grosso Do Sul ◽  
Made In

Plectris aliena (Coleoptera, Melolonthidae) Chapin is a species already recorded causing serious damage to various cultures in North America and Australia. Although its occurrence has recently been reported in Brazil, information about its distribution, taxonomy, and biology is limited. Thus, this study aims to report this new occurrence of P. aliena in Deodápolis (Mato Grosso do Sul, Brazil), as well as to present bioecological and morphological aspects of this species. In this way, the seasonal distribution and the life cycle was studied in the years 2017 and 2018. The larvae were sampled through trenches made in the soil and reared in the laboratory. Adults were captured using “Luiz de Queiroz” light traps. Adults have body with dense white hairs, antennae with 10 antenomeres; they measure approximately 12 mm in length, and their antennal lamellae are larger for males than females. The larvae reach 30 mm in length in the third stage and pupae show about 19 mm in length. The life cycle of this species is univoltine. Due to the great diversity of Plectris and the scarce information available about this species in South America, this study will facilitate its identification in the field and indicate the best time for monitoring in sugarcane crop.

Studies on the Life Cycle and Biology of Ternidens deminutus (Railliet & Henry, 1905), (Nematoda: Strongylidae)

1971 ◽  
Vol 45 (4) ◽  
pp. 341-352 ◽  
Author(s):  
J. M. Goldsmid
Keyword(s):  
Life Cycle ◽  
Low Temperatures ◽  
Egg Laying ◽  
The Third ◽  
Male Ratio ◽  
Third Stage

The life cycle and biology of T. deminutus were studied and investigations were carried out on the site of infection in the host, the female to male ratio, the egg laying capacity of the female worms, the development of the eggs after leaving the host and preliminary observations on the effects of desiccation and low temperatures on the third stage larvae were made.

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