Morphogenesis of the Genital Ducts and Spermathecae in <i>Clitellio arenarius, Heterochaeta costata, Tubificoides benedii</i> (Tubificidae) and <i>Stylaria lacustris</i> (Naididae) (Annelida, Oligochaeta)

Gustavsson, Lena M.; Erséus, Christer

doi:10.1111/j.1463-6395.1997.tb01122.x

Cited by 22 publications

(29 citation statements)

References 21 publications

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“…Vejdovsky (1884), among others, stated that the pore in Tubificidae opens in the intersegmental furrow between segments XI and XII, but this is not true for all tubificids. In, for example, Alexandrovia onegensis, Clitellio arenarius, Heterochaeta costata, and Tubificoides benedii, the female duct pierces septum 11/12 and opens to the exterior in the segment behind the ovarian segment, i.e., the plesioporous condition (Gustavsson and Erséus, 1997). This condition was also reported by Gatenby (1916) but he included the Naidinae, but many naidines have a prosoporous condition where the female duct opens in the ovarian segment (Sperber, 1948;Gustavsson and Erséus, 1997).…”

Section: Female Funnelmentioning

confidence: 68%

“…In other tubificid species studied (e.g., Clitellio arenarius, Tubificoides benedii, Limnodriloides rubicundus, Thalassodrilides ineri, and Tectidrilus bori), the funnel plate is composed of a thick mass of small cells instead of a layer, and an organization into a distinct cell layer does not occur until later in development (Gustavsson and Erséus, 1997;Gustavsson, 2002). This is similar to funnel development in Alexandrovia onegensis, where the early plate is composed of small cells and not organized into any distinct layer.…”

Section: Male Funnel and Vas Deferensmentioning

confidence: 74%

“…Then the ectoderm cells migrate or are pushed inwards through the muscular layer inside the bodycavity as a small rounded swelling or ingrowth connected with the ectoderm." This was later confirmed for S. lacustris by Gustavsson and Erséus (1997). A few other naidines were studied by Vejdovsky (1884) and he pointed out that the developmental process of atria differs between the studied naidines and other tubificids.…”

Section: Atriummentioning

confidence: 80%

“…Developmental studies of tubificine species show that the prostate gland is an outgrowth from the atrial epithelium, i.e., is of ectodermal origin (Vejdovsky, 1884;Mehra, 1922;Hrabe, 1939;Goodrich, 1945;Gustavsson and Erséus, 1997). It commences as a multiplication of the cells in the atrial epithelium in a defined area.…”

Section: Prostate Glandsmentioning

confidence: 97%

“…It commences as a multiplication of the cells in the atrial epithelium in a defined area. The bud of cells penetrates the muscle layer around the atrium and forms a well-defined, often pedunculate, gland (Gustavsson and Erséus, 1997). An ultrastructural study of the prostate gland in Tubifex tubifex reveals that the gland is invested in a basal lamina and peritoneum, which are continuous with those surrounding the atrium, and this illustrates that the prostate cells originate from cells in the atrial epithelium that have extended outside the atrium to form a discrete gland (Fleming, 1981b).…”

Section: Prostate Glandsmentioning

confidence: 98%

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Development of the genital ducts in Telmatodrilinae (Tubificidae, Clitellata)

Gustavsson

2004

Journal of Morphology

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In Tubificidae, the male genital duct comprises a funnel in the testes segment, followed by a vas deferens, an atrium, and, frequently, a copulatory structure in the adjacent ovarian segment. There may also be a diffuse or compact prostate gland in association with the duct. The morphology and position of the genital ducts are important for the classification of the oligochaetous Clitellata. Different parts of the male duct, however, have been named without regard to whether they are homologous or not. One way to establish better hypotheses of homology is to study the detailed morphology and/or the development of the genital ducts. The morphogenesis of the genital ducts in Alexandrovia onegensis (Telmatodrilinae) is described. The male funnel originates by multiplication of peritoneal (mesodermal) cells in the posterior septum in the testes segment. A cord of these cells breaks through the septum and grows backwards into the next segment, where it connects to the epidermis. This cord gives rise to the vas deferens, and is therefore mesodermal in origin. The atrium in A. onegensis develops from a primary epidermal (ectodermal) invagination. The vas deferens and atrium connect and a continuous duct from the testes segment to the exterior is formed. Several compact prostate glands develop along the atrium, each being formed from cells in the atrial epithelium. The spermatheca develops from an invagination of the epidermis in the testes segment. The female duct is formed from peritoneal (mesodermal) cells in the posterior septum in the ovarian segment. These developmental findings strengthen the hypothesis about a closer relationship between the Telmatodrilinae and Tubificinae (both Tubificidae).

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Section: Female Funnelmentioning

confidence: 68%

Section: Male Funnel and Vas Deferensmentioning

confidence: 74%

Section: Atriummentioning

confidence: 80%

Section: Prostate Glandsmentioning

confidence: 97%

Section: Prostate Glandsmentioning

confidence: 98%

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Development of the genital ducts in Telmatodrilinae (Tubificidae, Clitellata)

Gustavsson

2004

Journal of Morphology

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Development of the genital ducts and spermathecae in the RhyacodrilinesRhyacodrilus coccineus andMonopylephorus rubroniveus (Oligochaeta, Tubificidae)

Gustavsson

Erséus

1999

J. Morphol.

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Comparative study of the cuticle in some aquatic oligochaetes (Annelida: Clitellata)

Gustavsson

2001

Journal of Morphology

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An examination of the cuticle of six aquatic oligochaete species using transmission electron microscopy revealed a larger morphological variation than previously known. Three freshwater species, Aulodrilus pluriseta, Spirosperma ferox (both Tubificidae), and Pristina breviseta (Naididae), and three marine species, Clitellio arenarius, Heterochaeta costata (both Tubificidae), and Paranais litoralis (Naididae), were investigated. The arrangement of the collagen fibers in the cuticle differs among the studied species. Only S. ferox shows an "orthogonal grid," i.e., layers of parallel fibers perpendicular to each other, as earlier described for lumbricids and enchytraeids. Clitellio arenarius and H. costata have fibers arranged in layers, while A. pluriseta and P. litoralis have irregularly distributed fibers. Pristina breviseta lacks cuticular fibers. The matrix surrounding the collagen fibers (when present) continues outside the fiber layer, making up a thin epicuticle, which has a unique banding in each of the studied species. The external surface of the epicuticle is covered with epicuticular projections. Their number, shape, and attachment to the epicuticle vary among the studied species. Furthermore, a distinctive internal substructure of the projections was observed in H. costata, A. pluriseta, S. ferox, and P. breviseta. Microvilli, extensions from the epidermal cells, penetrate the cuticle and terminate at its outer surface. In three species microvilli were observed to pinch off the epicuticular projections. The size, number, and shape of the latter vary; no typical microvilli were observed in S. ferox.

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Morphogenesis of the Genital Ducts and Spermathecae in Clitellio arenarius, Heterochaeta costata, Tubificoides benedii (Tubificidae) and Stylaria lacustris (Naididae) (Annelida, Oligochaeta)

Abstract: Abbreviations used in the figuresaa ac ad ai aP at ci em CP eg eP CC co ef f d fp lm lu me mf nc PC Pe Pg PP

Cited by 22 publications

References 21 publications

Development of the genital ducts in Telmatodrilinae (Tubificidae, Clitellata)

Development of the genital ducts in Telmatodrilinae (Tubificidae, Clitellata)

Development of the genital ducts and spermathecae in the RhyacodrilinesRhyacodrilus coccineus andMonopylephorus rubroniveus (Oligochaeta, Tubificidae)

Comparative study of the cuticle in some aquatic oligochaetes (Annelida: Clitellata)

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