Sperm maturation in the male and female genital tracts of Anagasta kühniella (Lepidoptera: Pyralididae)

Riemann, John G.; Thorson, Barbara J.

doi:10.1016/0020-7322(71)90004-3

Cited by 57 publications

(19 citation statements)

References 11 publications

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“…The peak of sperm accumulation in the vas deferens lumen is correlated with the release of glycoproteins from the apical portion of the vas deferens epithelium (Riemann & Giebultowicz 1991). Ultrastructural studies suggest that the secretory materials interact with the sperm and are involved in sperm maturation (Riemann & Thorson 1971;Riemann & Giebultowicz 1992). After night-time retention in the vas deferens lumen, sperm is transferred to the seminal vesicles due to the morning increase in the intensity of contraction of the vas deferens wall (Giebultowicz et al 1996).…”

Section: Where Is the Physiology?mentioning

confidence: 99%

Peripheral clocks and their role in circadian timing: insights from insects

Giebułtowicz

2001

Phil. Trans. R. Soc. Lond. B

104

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Impressive advances have been made recently in our understanding of the molecular basis of the cellautonomous circadian feedback loop; however, much less is known about the overall organization of the circadian systems. How many clocks tick in a multicellular animal, such as an insect, and what are their roles and the relationships between them? Most attempts to locate clock-containing tissues were based on the analysis of behavioural rhythms and identi¢ed brain-located timing centres in a variety of animals. Characterization of several essential clock genes and analysis of their expression patterns revealed that molecular components of the clock are active not only in the brain, but also in many peripheral organs of Drosophila and other insects as well as in vertebrates. Subsequent experiments have shown that isolated peripheral organs can maintain self-sustained and light sensitive cycling of clock genes in vitro. This, together with earlier demonstrations that physiological output rhythms persist in isolated organs and tissues, provide strong evidence for the existence of functionally autonomous local circadian clocks in insects and other animals. Circadian systems in complex animals may include many peripheral clocks with tissue-speci¢c functions and a varying degree of autonomy, which seems to be correlated with their sensitivity to external entraining signals.

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Section: Where Is the Physiology?mentioning

confidence: 99%

Peripheral clocks and their role in circadian timing: insights from insects

Giebułtowicz

2001

Phil. Trans. R. Soc. Lond. B

104

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“…H0'''-ever, the radial mantle disappears as the eupyrene bundles leave the testis and descend into the seminal vesicles and the duplex region. Riemann & Thorson (1971) discuss the relation of the radial mantle to the formation of the sperm sheath. The radial mantle or lacinate appendage is found only in Lepidoptera in eupyrene sperm (Baccetti 1972).…”

Section: Discussionmentioning

confidence: 99%

“…The satellite body has also been called the reticular appendage (Phillips 1971, Lai-Fook 1982a and the clear band (Yazumi and Oura 1964). The satellite body is attached to the cell membrane by septa, which measure about 50 A in diameter in Anagasta (Riemann & Thorson 1971). Once formed, the satellite body is a permanent feature of the sperm tail as the eupyrene bundle descends to the duplex region of the male reproductive tract, but it disappears when the sperm bundles dissociate in the spermatophore.…”

Section: Discussionmentioning

confidence: 99%

Spermiogenesis of Eupyrene Sperm in Prepupae, Pupae, and Adults of Heliothis virescens (Lepidoptera: Noctuidae): an Ultrastructural Study

Lachance

Olstad

1988

Annals of the Entomological Society of America

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“…However, the most evident difference is the elaborate extracellular structures present in eupyrene spermatozoa, which undergo morphological modifications along the male and female reproductive tract (Riemann, 1970, Phillips, 1971, Riemann and Thorson, 1971, Friedländer and Gitay, 1972, Lai-Fook, 1982, Kubo-Irie et al, 1998and Mancini and Dolder, 2003. In the testis, they possess two exclusive appendages, called the lacinate and reticular appendages (Phillips, 1970, Phillips, 1971and Jamieson et al, 1999.…”

Section: Introductionmentioning

confidence: 99%

“…In the testis, they possess two exclusive appendages, called the lacinate and reticular appendages (Phillips, 1970, Phillips, 1971and Jamieson et al, 1999. In the extra testicular regions, the eupyrene sperm lose their lacinate appendages and acquire a complex coat (Phillips, 1971, Riemann and Thorson, 1971, Lai-Fook, 1982, Kubo-Irie et al, 1998, Mancini and Dolder, 2001and Mancini and Dolder, 2003. The apyrene spermatozoa, however, present a less complex extracellular coat, acquired only in the extra testicular portions of the reproductive tract (Phillips, 1971, Friedländer and Gitay, 1972, Kubo-Irie et al, 1998, Garvey et al, 2000, Mancini and Dolder, 2001and Mancini and Dolder, 2003.…”

Section: Introductionmentioning

confidence: 99%

Immunocytochemical localization of tubulins in spermatids and spermatozoa of Euptoieta hegesia (Lepidoptera: Nymphalidae)

et al. 2005

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A comparative analysis of the distribution of tubulin types in apyrene and eupyrene sperm of Euptoieta hegesia butterflies was carried out, also verifying the presence of tubulin in lacinate appendages of the eupyrene sperm. Ultrathin sections of LR White embedded spermatids and spermatozoa were labeled for alpha, beta, gamma, alpha-acetylated and alpha-tyrosinated tubulins. Apyrene and eupyrene spermatids show the same antibody recognition pattern for tubulins. All tubulin types were detected in axonemal microtubules. Alpha and gamma tubulins were also detected on the cytoplasmic microtubules. However, for beta and tyrosinated tubulins only scattered labeling was detected on cytoplasmic microtubules and acetylated tubulin was not detected. In apyrene and eupyrene spermatozoa only the axoneme labeling was analyzed since cytoplasmic microtubules no longer exist in these cells. Alpha, beta and tyrosinated tubulins were easily detected on the apyrene and eupyrene axoneme; gamma tubulin was strongly marked on eupyrene axonemes but was scattered on the apyrene ones. Acetylated tubulin appeared with scattered labeling on the axoneme of both sperm types. Our results demonstrate significant differences in tubulin distribution in apyrene and eupyrene axonemal and cytoplasmic microtubules. Extracellular structures, especially the lacinate appendages, were not labeled by antibodies for any tubulin.

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Sperm maturation in the male and female genital tracts of Anagasta kühniella (Lepidoptera: Pyralididae)

Cited by 57 publications

References 11 publications

Peripheral clocks and their role in circadian timing: insights from insects

Peripheral clocks and their role in circadian timing: insights from insects

Spermiogenesis of Eupyrene Sperm in Prepupae, Pupae, and Adults of Heliothis virescens (Lepidoptera: Noctuidae): an Ultrastructural Study

Immunocytochemical localization of tubulins in spermatids and spermatozoa of Euptoieta hegesia (Lepidoptera: Nymphalidae)

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