ANATOMY AND FUNCTION OF THE REPRODUCTIVE SYSTEM IN THE SNAIL,<i>LYMNÆA STAGNALIS APPRESSA</i>SAY

Crabb, Edward D.

doi:10.2307/1537030

Cited by 21 publications

(4 citation statements)

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“…L'examen au microscope des oeufs pondus a permis à divers auteurs (1) : Colton (1918), Crabb (1927), Brumpt (2) (1928) de…”

Section: Reproductionunclassified

“…Mais ces recherches sur le vivant devaient être complétées par des études histologiques sur des pièces fixées. Ces travaux ont été effec tués par Crabb (1927Crabb ( , 1928, par de Larembergue (1929) et par Ikeda (1937) . auricularia.............................. Oken L. catascopium.............................. Colton L. columella.................................. Colton L. humilis modicella...................... Colton L. j aponica................................... Taki L. luteola............................... (1) Afin de simplifier ce tableau, nous n'avons indiqué que les premiers auteurs ayant établi ce phénomène.…”

Section: Reproductionunclassified

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Mission E. Brumpt et L. Ch. Brumpt en Colombie et au Venezuela. V. — Observations biologiques diverses concernant Planorbis (Australorbis) glabratus hôte intermédiaire de Schistosoma mansoni

Brumpt¹

1941

Ann. Parasitol. Hum. Comp.

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Nous adressons nos bien sincères remerciements et l'expression de notre vive reconnaissance à M. le Dr Julio Garcia Alvarez, Ministre de la Santé publique du Venezuela, qui nous a donné toutes les facilités pour effectuer diverses enquêtes épidémiologiques dans plusieurs régions des États-Unis du Venezuela, en attendant la possibilité de nous embarquer pour la France, le 9 novembre 1939. (2) L'identité du Planorbis glabratus Say 1818 et du Planorbis guadeloupensis Sowerby 1821 a été établie par Pilsbry en 1934. A notre grand regret, le nom de guadeloupensis, connu de tous les médecins et qui devrait bénéficier de la prescrip tion, doit disparaître par application de la loi de priorité de la nomenclature zoologique.

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“…L'examen au microscope des oeufs pondus a permis à divers auteurs (1) : Colton (1918), Crabb (1927), Brumpt (2) (1928) de…”

Section: Reproductionunclassified

Mission E. Brumpt et L. Ch. Brumpt en Colombie et au Venezuela. V. — Observations biologiques diverses concernant Planorbis (Australorbis) glabratus hôte intermédiaire de Schistosoma mansoni

Brumpt¹

1941

Ann. Parasitol. Hum. Comp.

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“…Morphological characters of the copulatory apparatus traditionally used in the taxonomy of Hygrophila have involved primarily the gross anatomical traits (the presence or absence of certain organs or structures, the shape or relative sizes of organs, etc.). Although there has been a number of studies on the microanatomy and histology of the reproductive system (Abdel-Malek, 1954;Baudelot, 1863;Crabb, 1927;Duncan, 1958;Holm, 1946;Schutte & van Eeden, 1959;Starmühlner, 1969), their contribution to the taxonomy of freshwater pulmonates has been relatively limited and the systematic potential of the microscopic architecture of copulatory organs remains largely unexplored. One of the most promising, but untapped, sources of microscopic characters is the muscle arrangement of the copulatory organs, which has already proved its usefulness in the taxonomy of a few other groups of invertebrates (Doe & Smith, 2016;Hooge & Tyler, 2005;Raikova, Tekle, Reuter, Gustafsson, & Jondelius, 2006).…”

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confidence: 99%

Musculature of the penial complex: A new criterion in unravelling the phylogeny of Hygrophila (Gastropoda: Pulmonata)

Soldatenko

Petrov

2019

Journal of Morphology

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The taxonomy of freshwater pulmonates (Hygrophila) has been in a fluid state warranting the search for new morphological criteria that may show congruence with molecular phylogenetic data. We examined the muscle arrangement in the penial complex (penis and penis sheath) of most major groups of freshwater pulmonates to explore to which extent the copulatory musculature can serve as a source of phylogenetic information for Hygrophila. The penises of Acroloxus lacustris (Acroloxidae), Radix auricularia (Lymnaeidae), and Physella acuta (Physidae) posses inner and outer layers of circular muscles and an intermediate layer of longitudinal muscles. The inner and outer muscle layers in the penis of Biomphalaria glabrata consist of circular muscles, but this species has two intermediate longitudinal layers separated by a lacunar space, which is crossed by radial and transverse fibers. The muscular wall of the penis of Planorbella duryi is composed of transverse and longitudinal fibers, with circular muscles as the outer layer. In Planorbidae, the penial musculature consists of inner and outer layers of longitudinal muscles and an intermediate layer of radial muscles. The penis sheath shows more variation in muscle patterns: its muscular wall has two layers in A. lacustris, P. acuta, and P. duryi, three layers in R. auricularia and Planorbinae and four layers in B. glabrata. To trace the evolution of the penial musculature, we mapped the muscle characters on a molecular phylogeny constructed from the concatenated 18S and mtCOI data set. The most convincing synapomorphies were found for Planorbinae (inner and outer penis layers of longitudinal muscles, three‐layered wall of the penis sheath). A larger clade coinciding with Planorbidae is defined by the presence of radial muscles and two longitudinal layers in the penis. The comparative analysis of the penial musculature appears to be a promising tool in unraveling the phylogeny of Hygrophila.

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“…However, there have been no studies to date on the impact of benzodiazepine on mollusk reproduction, despite freshwater mollusks, and gastropods in particular, being regarded as reference organisms for ecotoxicological studies (Amorim et al, 2019;Tallarico, 2016) due to their widespread presence in continental surface waters, their benthic habitat and primary consumer status. Moreover, freshwater gastropod reproduction has been extensively studied for almost a century (Crabb, 1927), with detailed descriptions extending from the structure and characteristics of the reproductive system (Duncan, 1958;Ohbayashi-Hodoki et al, 2004;Tair-Abbaci et al, 2017), to mating and egglaying behaviors (De Boer et al, 1996;Ter Maat, 1992) and the associated nervous and endocrine regulation (Koene, 2010;Morishita et al, 2010). Moreover, gastropod egg masses are transparent, making it easy to observe and count eggs, facilitating monitoring.…”

Section: Introductionmentioning

confidence: 99%

Effects of the anxiolytic benzodiazepine oxazepam on freshwater gastropod reproduction: a prospective study

Lebreton¹,

Malgouyres²,

Carayon³

et al. 2021

Ecotoxicology

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Psychoactive drugs have emerged as contaminants over the last few decades. These drugs are frequently prescribed and poorly eliminated by wastewater treatment plants, and many are present at non-negligible concentrations in surface waters. Several studies have investigated the non-target organism toxicity of one such drug, oxazepam, a benzodiazepine anxiolytic frequently detected in rivers. However, very little is known about the impact of this drug on reproduction. We investigated the effects of environmentally relevant concentrations of oxazepam on Radix balthica, a freshwater gastropod widespread in Europe. We identified the reproductive organs of Radix balthica. We then exposed this gastropod to oxazepam for two months and assessed several reproductive parameters, from reproductive organ status to behavioral parameters. We found that adults exposed to 10 μg/L oxazepam display an increase in the density of spermatozoa, and that adults exposed to 0.8 μg/ L oxazepam displayed a decrease in the number of eggs per egg mass over time. By contrast, oxazepam had no effect on shell length, the size of male reproductive organs or social interactions. Finally, a locomotor activity analysis showed the distance covered over time decreased in all conditions of exposure to oxazepam, potentially reflecting a disturbance of exploratory activity. These results shed light on the effects of oxazepam on the reproduction of a non-target freshwater mollusk.

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ANATOMY AND FUNCTION OF THE REPRODUCTIVE SYSTEM IN THE SNAIL,LYMNÆA STAGNALIS APPRESSASAY

Cited by 21 publications

References 0 publications

Mission E. Brumpt et L. Ch. Brumpt en Colombie et au Venezuela. V. — Observations biologiques diverses concernant Planorbis (Australorbis) glabratus hôte intermédiaire de Schistosoma mansoni

Mission E. Brumpt et L. Ch. Brumpt en Colombie et au Venezuela. V. — Observations biologiques diverses concernant Planorbis (Australorbis) glabratus hôte intermédiaire de Schistosoma mansoni

Musculature of the penial complex: A new criterion in unravelling the phylogeny of Hygrophila (Gastropoda: Pulmonata)

Effects of the anxiolytic benzodiazepine oxazepam on freshwater gastropod reproduction: a prospective study

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