Development of Skrjabinoclava inornatae (Nematoda: Acuarioidea) in fiddler crabs (Uca spp.) (Crustacea) and Western Willets (Catoptrophorus semipalmatus inornatus) (Aves: Scolopacidae)

1989 ◽  
Vol 67 (12) ◽  
pp. 2893-2901 ◽  
Author(s):  
P. L. Wong ◽  
R. C. Anderson ◽  
Cheryl M. Bartlett
Keyword(s):  
Stage Larva ◽  
Posterior Half ◽  
Fiddler Crabs ◽  
Male And Female ◽  
The Third ◽  
Third Stage ◽  
Recurvirostra Americana ◽  
Chlidonias Niger ◽  
Tail Tip ◽  
Precocious Development

Skrjabinoclava inornatae Wong and Anderson, 1988 from the posterior half of the oesophagus and proventriculus of Western Willets (Catoptrophorus semipalmatus inornatus (Brewster)) developed to the infective third stage in fiddler crabs (Uca spp.) collected in Louisiana, U.S.A. This is the first report of the development of an acuarioid in a decapod. The third-stage larva was characterized by a dorsally bowed caudal end and one small dorsal protuberance and two large dorsally directed spines on the tail tip. The genital primordia were precociously developed in both male and female third-stage larvae. Larvae transferred experimentally to uninfected willets were found in the mucosa of the proventriculus and underwent the first moult less than 3 days and the fourth moult 5 days postinfection. Adult worms occurred mainly in the posterior end of the oesophagus and were mature 15 days postinfection. It is suggested that the rapidity of maturation of the worms in willets may be related to the precocious development of the genital primordia in the third-stage larvae. Marbled Godwits (Limosa fedoa L.) were infected experimentally. American Avocets (Recurvirostra americana Gmelin) and Black Terns (Chlidonias niger (L.)) given larvae did not become infected.

Development to third-stage larvae occurs in the eggs of Anisakis simplex and Pseudotetranova decipiens (Nematoda, Ascaridoidea, Anisakidae)

1995 ◽  
Vol 52 (S1) ◽  
pp. 134-139 ◽  
Author(s):  
Marianne Køie ◽  
Bjørn Berland ◽  
Michäel D.B. Burt
Keyword(s):  
North Atlantic ◽  
Sea Water ◽  
Anisakis Simplex ◽  
Stage Larva ◽  
Second Stage ◽  
The Third ◽  
The North ◽  
Pseudoterranova Decipiens ◽  
Third Stage ◽  
Tail Tip

Two moults occur during larval development in the eggs of Anisakis simplex (Rudolphi, 1809) and Pseudoterranova decipiens (Krabbe, 1878) from the North Atlantic. Live larvae forced out of eggs in sea water by coverslip pressure shortly before spontaneous hatching were surrounded by the thin cuticle of the first-stage larva. Infective larvae from naturally hatched eggs are loosely ensheathed in the thick cuticle of the second-stage larva. Thus, it is the third-stage larva that emerges from the egg of both species and not the second-stage larva as previously believed. The thin, smooth, fragile cuticle of the first-stage larva remains in the egg. The striated, cocoon-like cuticle of the second-stage larva of A. simplex may increase the buoyancy of the third-stage larva. The tail tip of the cuticle of the second-stage larva of P. decipiens is sticky and adheres the sheathed third-stage larva to the substrate.

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.

New information about the third stage larva and larval habitat of Microdon (Chymophila) bruchi Shannon, 1927 (Diptera, Syrphidae) from Argentina

2019 ◽  
Vol 53 (45-46) ◽  
pp. 2833-2853
Author(s):  
Guillermo P. López-García ◽  
Menno Reemer ◽  
Guillermo Debandi ◽  
Ximo Mengual
Keyword(s):  
Larval Habitat ◽  
Stage Larva ◽  
The Third ◽  
New Information ◽  
Third Stage

Myctolaimus platypi sp. n. (Nematoda: Cylindrocorporidae) isolated from the oak borer, Platypus quercivorus (Coleoptera: Platypodidae)

Nematology ◽  
2006 ◽  
Vol 8 (5) ◽  
pp. 717-725 ◽  
Author(s):  
Natsumi Kanzaki ◽  
Masahide Kobayashi ◽  
Ai Nozaki ◽  
Kazuyoshi Futai
Keyword(s):  
New Species ◽  
Body Length ◽  
B Value ◽  
New Combinations ◽  
Male And Female ◽  
Platypus Quercivorus ◽  
The Third ◽  
A Value ◽  
Third Stage ◽  
C Value

Abstract Myctolaimus platypi sp. n. is described and figured. The third-stage dauer juveniles of M. platypi sp. n. were isolated from the underside of the elytra of the oak borer, Platypus quercivorus, and were reared on an Asparagine-Mannitol (A-M) agar. Specimens of adult nematodes for description and measurements were collected from a 2-week-old culture on A-M agar. The new species is characterised by having the stoma shorter than the pro-metacorpus, shape of the rounded-cylindroid pro-metacorpus, the obvious longitudinal striations on the cuticle, and thick cuticle. The male and female of the new species have a body length of ca 700-1000 μm, a value of ca 20, b value of ca 6, and c value of ca 10. Males of the new species have strongly arcuate, C-shaped spicules 71 (62-80) μm long, 29 (25-35) μm long gubernaculum with pointed distal end, and nine pairs of caudal papillae. There is no bursa. Ceratosolenus is proposed as a junior synonym of Myctolaimus and the following new combinations are also proposed: M. anoplophorae comb. n.; M. inevectus comb. n.; and M. racemosa comb. n.

Description of the larva of Chalcosoma atlas (L.) (Coleoptera, Scarabaeidae, Dynastinae) from Malaysia

1976 ◽  
Vol 66 (2) ◽  
pp. 189-193 ◽  
Author(s):  
G. O. Bedford
Keyword(s):  
Stage Larva ◽  
Breeding Sites ◽  
Oryctes Rhinoceros ◽  
The Third ◽  
Third Stage

AbstractThe third-stage larva of Chalcosoma atlas (L.) collected in Malaysia is described, with illustrations, and a key is provided to distinguish larvae of this species from those of Oryctes rhinoceros (L.) and Xylotrupes gideon beckeri Schaufuss, all of which occur in similar breeding sites.

scholarly journals Gnathostomiasis - A Rare Nematode Infection

1970 ◽  
Vol 16 (1) ◽  
pp. 28-29
Author(s):  
MM Rahman
Keyword(s):  
Anterior Chamber ◽  
Adult Stage ◽  
Skin Penetration ◽  
Human Infection ◽  
Stage Larva ◽  
Larval Form ◽  
The Third ◽  
Northern District ◽  
Third Stage ◽  
Raw Fish

Gnathostoma, primarily an animal nematode, is rusty in colour, 2-3 cm long in adult stage, caninfect man by their larval form. Human infection occurs by the third stage larva by consumptionof undercooked or raw fish, poultry, or pork and rarely by skin penetration, In Bangladeshgnathostomiasis is not reported. But recently a female of 38 year of age of the northern district,Rangpur has got infected with a species of Gnathostoma, manifested by the appearance of thefarva in anterior chamber of her right eye. The larva was removed from her eye surgically inliving state and the patient was cured.doi: 10.3329/taj.v16i1.3900TAJ June 2003; Vol.16(1): 28-29

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