Studies on Dictyocaulus filaria. IV. The morphogenesis of the parasitic stages in lambs.
نویسندگان
چکیده
VERSTER, ANNA, COLLIN S, H . MARIA & ANDERSON, P. J. S. 1971. Studies on D ictyocaulus filaria. IV. The morphogenesis of the parasitic stages in lambs. Onderstepoort ]. vet. R es. 38 (3), 199-206 (1971). In males the parasitic 3rd stage, 3rd moult, 4th stage, 4th moult and 5th stage are reached on D ays 1 to 2, 3, 4, 5 to 6 and 8 respectively. The 4th stage is swollen in the anal region and accessory genitalia differeq.tiate rapidly during the 4th moult. In females development from 4th stage larvae through the 4th moult to the early 5th stage is delayed ; these stages are present from D ays 4 to 6, 7 and 8 respectively. There is little differentiation in the 3rd stage. In the 4th stage the tail has become tapered and by the 4th moult the vulva lips have formed ; they become patent after moulting. The genital ducts start showing evidence of patency only 7 days after the 4th moult completing this process 10 days later. T he uterus contained embryonated eggs on the 28th day.
منابع مشابه
Studies on Dictyocaulus filaria. II. Migration of the developmental stages in lambs.
ANDERSON, P. J. S. & VERSTER, ANNA, 1971. Studies on Dictyocaulus filaria. II. Migration of the developmental stages in lambs. Onderstep oort]. vet. Res. 38 (3), 185190 (1971). Developmental stages of D ictyocaulus filaria (Rudolphi, 1809) were recovered from the right colic mesenteric lymph nodes of lambs 18 hours after infestation . The majority of the parasites remain in the lymph nodes unti...
متن کاملAnalysis of the transcriptome of adult Dictyocaulus filaria and comparison with Dictyocaulus viviparus, with a focus on molecules involved in host-parasite interactions.
Parasitic nematodes cause diseases of major economic importance in animals. Key representatives are species of Dictyocaulus (=lungworms), which cause bronchitis (=dictyocaulosis, commonly known as "husk") and have a major adverse impact on the health of livestock. In spite of their economic importance, very little is known about the immunomolecular biology of these parasites. Here, we conducted...
متن کاملStudies on Dictyocaulus filaria. I. Modifications of laboratory procedures.
ANDERSON, P. J. S. and VERSTER, ANNA, 1971. Studies on Dictyocaulus filaria. I. Modifications of laboratory procedures. Onderstepoort]. vet. Res. 38 (3), 181-184 (1971). Techniques used in a study of the life-cycle of Dictyocaulus filaria (Rudolphi, 1809) are described. First stage larvae migrate from faecal pellets placed in water. Infective larvae are cultured in clean water at room temperatu...
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ورودعنوان ژورنال:
- The Onderstepoort journal of veterinary research
دوره 38 3 شماره
صفحات -
تاریخ انتشار 1971