Histology and fine structure of spermatozoa and egg passage in the female tract of Dermacentor andersoni stiles (Acari-Ixodidae)

Brinton, Lyle P.; Burgdorfer, Willy; Oliver, James H.

doi:10.1016/0040-8166(74)90026-3

Cited by 30 publications

(29 citation statements)

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“…Spermatozoa have been seen in many different cells throughout the female genital tract and it is likely that they indeed actively penetrate cells (OLIVER & BRINTON, 1973;BRINTON et al, 1974). Phagocytosis of spermatozoa by cells of the wall of the oviduct has also been reported by some authors, e.g.…”

mentioning

confidence: 76%

“…KHALIL (1969) suggests that in Argas (Persicargas) arboreus (Kaiser, Hoogstraal & Kohls, 1968) the spermatozoon actively penetrates the primary oocyte (where it can be seen as being less basophilic than the cytoplasm of the oocyte) and degenerates, leaving only its nucleus which can be seen as a basophilic area of darkly-staining lumps of chromatin. In the ixodid Dermacentor andersoni (Styles, 1902), active penetration GARCÍA-FERNÁNDEZ et al of oocytes by spermatozoa through a structure similar to a micropyle has been suggested by various workers (BRINTON & OLIVER, 1971a, b;OLIVER & BRINTON, 1973;BRINTON et al, 1974;SONENSHINE, 1991), suggesting that only the small nucleus enters the oocytes and that the remaining tubular part of the spermatozoon does not participate in fertilization but is dissolved by secretions of the glandular epithelium of the oviduct and uterus walls.…”

mentioning

confidence: 99%

“…OLIVER & BRINTON (1973) and BRINTON et al (1974) observed spermatozoa during their migration to the ovary and noted their tendency to actively penetrate not only the epithelial cells lining the ovary lumen but also those lining the oviduct.…”

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confidence: 99%

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New histochemical and morphological findings in the female genital tract of Boophilus microplus (Acari, Ixodidae): an attempt toward the elucidation of fertilization in ticks

García-Fernández

Garcia

Garcia³

et al. 2005

Iheringia, Sér. Zool.

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ABSTRACT. At present not only is the site of fertilization in ticks still unknown but it is also unclear as to how this mystery can be solved. Signs of fertilization can be observed throughout the female genital tract and these can be clues for the elucidation of the unsolved questions relating to ticks fertilization. In Boophilus microplus (Canestrini, 1887) the most important signs are the following: the final eversion of the acrosomal canal in females ready for oviposition; the presence of small tubules, resembling the subplasmalemal process of the spermatozoon between the oviduct cells; budding nuclei throughout the female genital tract; and the two Feulgen and DAPI positive areas in the oocyte at vitelogenesis. These morphological characteristics suggest that fertilization takes place in the internal cylinder which extends from the uterus to the ovary itself.KEYWORDS. Acari, ticks, female reproductive system, fertilization. RESUMO. Novas características histoquímicas e morfológicas no trato genital feminino de Boophilus microplus (Acari:Ixodidae): uma tentativa para a elucidação da fertilização nos carrapatos. Até o momento, não só o lugar da fertilização em carrapatos é desconhecido, mas também não é claro como este mistério possa ser esclarecido. Sinais de fertilização podem ser observados ao longo do trato genital feminino e estes podem ser pistas para a elucidação das questões relacionadas à fertilização em ácaros. Em Boophilus microplus (Canestrini, 1887), os sinais mais importantes são os seguintes: a eversão final do canal acrossômico em fêmeas prestes à oviposição; a presença de pequenos túbulos assemelhando-se a processos subplasmalêmicos dos espermatozóides entre as células do oviduto; brotamentos nucleares ao longo do trato genital feminino e as duas áreas Feulgen e DAPI positivas nos ovócitos em processo de vitelogênese. Estas características morfológicas sugerem que a fertilização ocorra no cilindro interno, o qual se estende desde o útero até o ovário inclusive. PALAVRAS-CHAVE.Acari, carrapatos, aparelho reprodutor feminino, fertilização.

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confidence: 76%

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confidence: 99%

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New histochemical and morphological findings in the female genital tract of Boophilus microplus (Acari, Ixodidae): an attempt toward the elucidation of fertilization in ticks

García-Fernández

Garcia

Garcia³

et al. 2005

Iheringia, Sér. Zool.

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“…In Hy. dromedarii (El Shoura, 1989) and D. andersoni (Brinton et al, 1974), oviductal epithelial cells display granular material that we presume is involved in sclerotization of the egg shell during passage. Muscle layers surrounding the oviduct affect peristaltic contractions during the passage of both spermatozoa and eggs.…”

Section: ) Oviductmentioning

confidence: 99%

“…In D. andersoni, the oviductal epithelia have well-developed microvilli and cell processes on the apical surface. Brinton et al (1974) suggests that both may help to protect them against the intracellular invasion of spermatozoa. These structures are present also in the oviduct of H. longicornis.…”

Section: ) Oviductmentioning

confidence: 99%

Reproduction in a Metastriata Tick, Haemaphysalis longicornis (Acari: Ixodidae)

Matsuo¹,

Okura²,

Kakuda³

et al. 2013

J. Acarol. Soc. Jpn.

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The superfamily Ixodoidea includes two major families: the Ixodidae called "hard tick" and Argasidae called "soft tick". Furthermore, Ixodidae is classified into Prostriata (Ixodidae: Ixodes), and Metastriata (Ixodidae except for Ixodes) based on their reproductive strategies. That is, species in each group have characteristic reproductive organs and systems. Ticks are important as vectors of various pathogens. Haemaphysalis longicornis belonging to the Metastriata is characterized by having both the parthenogenetic and bisexual races, and is widely distributed in Australia, New Zealand, New Caledonia, the Fiji Islands, Japan, the Korean Peninsula and northeastern areas of both China and Russia. This species is known as a vector of rickettsiae causing Q fever, viruses causing Russian spring-summer encephalitis, and protozoa causing theileriosis and babesiosis. H. longicornis, the most dominant tick in Japanese pastures, is very important in agricultural and veterinary sciences because this species also transmits piroplasmosis caused by Theileria and Babesia parasites among grazing cattle. We present here an overview reproduction in the bisexual race of H. longicornis.

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Fine structure of the genital system in the females ofPergamasus mites (Acari: Gamasida: Pergamasidae)

1999

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Histology and fine structure of spermatozoa and egg passage in the female tract of Dermacentor andersoni stiles (Acari-Ixodidae)

Cited by 30 publications

References 10 publications

New histochemical and morphological findings in the female genital tract of Boophilus microplus (Acari, Ixodidae): an attempt toward the elucidation of fertilization in ticks

New histochemical and morphological findings in the female genital tract of Boophilus microplus (Acari, Ixodidae): an attempt toward the elucidation of fertilization in ticks

Reproduction in a Metastriata Tick, Haemaphysalis longicornis (Acari: Ixodidae)

Fine structure of the genital system in the females ofPergamasus mites (Acari: Gamasida: Pergamasidae)

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