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Spermatozoon Ultrastructure in Two Species of Amphibolus (Eutardigrada, Eohypsibiidae)
Acta Zoologica, 1995AbstractWe examined the ultrastructure of the spermatozoa from two species of eutardigrades, gonochoristic Amphibolus volubilis and hermaphroditic A. weglarskae, by scanning and transmission electron microscopy. The gametes from the two species were morphologically quite similar, each consisting of a short head, neck and tail. The head included a conic,
REBECCHI, Lorena, A. GUIDI
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New taxonomic position of several Macrobiotus species (Eutardigrada: Macrobiotidae)
Zootaxa, 2007The main character distinguishing Minibiotus from Macrobiotus is the presence of peribuccal papulae instead of lamellae. However, most Minibiotus species also share a set of characters of the bucco-pharyngeal apparatus. This set is defined by ten morphological features (the first seven common to all species, the last three to most of them): antero ...
GUIDETTI, Roberto +2 more
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Photokinesis of Macrobiotus hufelandi (Tardigrada, Eutardigrada)
Zoologischer Anzeiger - A Journal of Comparative Zoology, 2001Abstract Macrobiotus hufelandi Schultze, 1834 was tested for response to light. Size groups of less than 120 m and of 120 m or more were used. It was found that the smaller, younger size group exhibited a statistically significant negative response to light.
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Head sensory organs of Halobiotus stenostomus (Eutardigrada, Hypsibiidae)
Biology Bulletin, 2012The structure and arrangement of sensory organs in the tardigrade Halobiotus stenostomus (Richters 1908) have been studied using transmission and scanning electron microscopy techniques. The sensory organs found on the head of H. stenostomus are as follows: the circumoral sensory field, cephalic papillae, anterolateral and posterolateral sensory fields,
N. M. Biserova, K. G. Kuznetsova
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Hebesuncus mollispinus (Eutardigrada, Hypsibiidae), a new species from maritime Antarctica
Zootaxa, 2012A new species of eutardigrade, Hebesuncus mollispinus sp. nov. is described from Charcot Island, maritime Antarctica.The three known species of Hebesuncus are either widespread with questionable reports from the Antarctic (H.conjungens) or endemic to maritime and continental Antarctica (H. ryani and H. schusteri). Hebesuncus mollispinus sp.nov. differs
PILATO G +2 more
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An opinion on the genus Fujiscon Ito, 1991 (Eutardigrada, Hypsibiidae)
Zootaxa, 2003The structure of the claws of the genus Fujiscon and the validity of this genus are discussed. According to the authors one can conclude that the claws of Fujiscon are of Hypsibius type with an evident septum between the common basal portion and the secondary branch.
Pilato, Giovanni, Binda, Maria Grazia
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Arthropod Structure & Development, 2019
In this study, we describe the female reproductive system organization and oogenesis in the eutardigrade Thulinius ruffoi. Light, confocal and electron microscopy was used in this study. During oogenesis, three phases can be distinguished: previtellogenesis, vitellogenesis, and choriogenesis.
Kamil, Janelt +2 more
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In this study, we describe the female reproductive system organization and oogenesis in the eutardigrade Thulinius ruffoi. Light, confocal and electron microscopy was used in this study. During oogenesis, three phases can be distinguished: previtellogenesis, vitellogenesis, and choriogenesis.
Kamil, Janelt +2 more
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Zoological Science, 2019
Reproductive strategy is an important aspect of biological diversity. In tardigrades, several reproductive modes, including sexual reproduction, are known. However, tardigrade mating behavior has been observed only rarely in most species, and in some cases, especially in the freely ovipositing eutardigrades, remains entirely unknown.
Kenta, Sugiura +5 more
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Reproductive strategy is an important aspect of biological diversity. In tardigrades, several reproductive modes, including sexual reproduction, are known. However, tardigrade mating behavior has been observed only rarely in most species, and in some cases, especially in the freely ovipositing eutardigrades, remains entirely unknown.
Kenta, Sugiura +5 more
openaire +2 more sources