An Ultrastructural Approach to Feeding Behaviour in Philodina Roseola and Brachionus Calyciflorus (Rotifers) III. Cilia and Muscles. Conclusions

Clément, Pierre; Amsellem, Jacqueline; Cornillac, Annie; Luciani, Anna Maria; Ricci, Claudia

doi:10.1007/978-94-009-9209-2_23

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Asplanchna have been the subject of research for over a century. To date, asplanchnids are some of the most common rotifers in studies of neurobiology, where histology and electron micros- copy have elucidated several aspects of nervous system structure and function (e.g., Eakin and Westfall, 1965;Ware, 1971;Seldon, 1972;Clément, 1975Clément, , 1977Clément, , 1980Clément, , 1987Ware and Lopresti, 1975;Clément and Wurdak, 1991;Clément et al, 1980Clément et al, , 1983Wurdak et al, 1983). More recently, histochemical methodologies have been applied to study the general distribution of enzymes in neurotransmitter metabolism (Nogrady and Alai, 1983) and the organization of catecholamines in whole mount specimens Nogrady, 1987, 1988;Kotikova, 1998).…”

Section: Species Ofmentioning

confidence: 99%

“…Specifically, the ultrastructural investigations of Eakin and Westfall (1965), Clément (1975Clément ( , 1977Clément ( , 1980Clément ( , 1987, Amsellem (1986, 1989), Clément and Wurdak (1984), Clément et al (1980Clément et al ( , 1983, and Wurdak et al (1983) provided details on the structure and innervation of sensory receptors, muscles and the coronal cilia. However, the only detailed studies on the structure of the cerebral ganglion are those of Clément (1975) on Trichocerca and the dissertations of Ware (1971) and Seldon (1972) on Asplanchna brightwellii.…”

Section: Introductionmentioning

confidence: 99%

“…In some of the earliest investigations of rotifers (Zelinka, 1888(Zelinka, , 1891(Zelinka, , 1892Hirschfelder, 1910;Martini, 1912;Nachtwey, 1925;Remane, 1929Remane, -1933, researchers documented the structure of the brain as part of a larger monograph on anatomy and taxonomy, but details about specific cerebral connections and the innervation of organ systems came later with the advent of electron microscopy. Specifically, the ultrastructural investigations of Eakin and Westfall (1965), Clément (1975Clément ( , 1977Clément ( , 1980Clément ( , 1987, Amsellem (1986, 1989), Clément and Wurdak (1984), Clément et al (1980Clément et al ( , 1983, and Wurdak et al (1983) provided details on the structure and innervation of sensory receptors, muscles and the coronal cilia. However, the only detailed studies on the structure of the cerebral ganglion are those of Clément (1975) on Trichocerca and the dissertations of Ware (1971) and Seldon (1972) on Asplanchna brightwellii.…”

Section: Introductionmentioning

confidence: 99%

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Three‐dimensional reconstruction and neural map of the serotonergic brain of Asplanchna brightwellii (Rotifera, Monogononta)

Hochberg

2008

Journal of Morphology

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The basic organization of the rotifer brain has been known for nearly a century; yet, fine details on its structure and organization remain limited despite the importance of rotifers in studies of evolution and population biology. To gain insight into the structure of the rotifer brain, and provide a foundation for future neurophysiologic and neurophylogenetic research, the brain of Asplanchna brightwellii was studied with immunohistochemistry, confocal laser scanning microscopy, and computer modeling. A three-dimensional map of serotonergic connections reveals a complex network of approximately 28 mostly unipolar, cerebral perikarya and associated neurites. Cells and their projections display symmetry in quantity, size, connections, and pathways between cerebral hemispheres within and among individuals. Most immunopositive cells are distributed close to the brain midline. Three pairs of neurites form decussations at the brain midline and may innervate sensory receptors in the corona. A single neuronal pathway appears to connect both the lateral horns and dorsolateral apical receptors, suggesting that convergence of synaptic connections may be common in the afferent sensory systems of rotifers. Results show that the neural map of A. brightwellii is much more intricate than that of other monogonont rotifers; nevertheless, the consistency in neural circuits provides opportunities to identify homologous neurons, distinguish functional regions based on neurotransmitter phenotype, and explore new avenues of neurophylogeny in Rotifera.

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Section: Species Ofmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three‐dimensional reconstruction and neural map of the serotonergic brain of Asplanchna brightwellii (Rotifera, Monogononta)

Hochberg

2008

Journal of Morphology

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“…Using an ultrastructural approach, Clement et al (1980 ; described and localized possible sensory receptors along the B . calyciflorus feeding system .…”

Section: Introductionmentioning

confidence: 99%

Modification of the swimming behaviour of Brachionus calyciflorus (Pallas) according to food environment and individual nutritive state

Charoy

1995

Hydrobiologia

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The swimming behaviour of orthoclonal Brachionus calyciflorus (Pallas) females was studied with the aid of a system of automated trajectometry . The swimming was observed in response to the food environment and the individual's nutritive state . Eighteen hours before testing, neonates were placed either in a suspension of Chlorella, or in a freshwater medium. For each nutritive state, the test consisted of an analysis of the swimming behaviour of B. calyciflorus in 5 different environmental food conditions : in an algal suspension, in an algal solution (obtained from filtration of the algal suspension), in a freshwater medium, in the same freshwater medium with a suspension of polystyrene beads, and in the algal solution with the same suspension of beads . Three variables were used to describe the swimming path : linear speed (mm s-1), angular speed (degrees s -1 ), and mean angle (degrees) . The results showed a modification in the swimming pattern dependent on both food environment and nutritive state of females . The nature of stimulations inducing these behavioural modifications, and their interactions with the individual nutritive state are briefly discussed .

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A simplified method for the preparation of rotifers for transmission and scanning electron microscopy

Amsellem

Cl�ment

1980

Hydrobiologia

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An Ultrastructural Approach to Feeding Behaviour in Philodina Roseola and Brachionus Calyciflorus (Rotifers) III. Cilia and Muscles. Conclusions

Cited by 4 publications

References 3 publications

Three‐dimensional reconstruction and neural map of the serotonergic brain of Asplanchna brightwellii (Rotifera, Monogononta)

Three‐dimensional reconstruction and neural map of the serotonergic brain of Asplanchna brightwellii (Rotifera, Monogononta)

Modification of the swimming behaviour of Brachionus calyciflorus (Pallas) according to food environment and individual nutritive state

A simplified method for the preparation of rotifers for transmission and scanning electron microscopy

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