Search Results - "Weitzman, Stanley H."

Relationships among major lineages of characid fishes (Teleostei: Ostariophysi: Characiformes), based on molecular sequence data by Javonillo, Robert, Malabarba, Luiz R., Weitzman, Stanley H., Burns, John R.

“…The family Characidae is a group of freshwater bony fishes that exhibits high species-level diversity and whose members inhabit parts of Texas, Mexico, and…”
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Systematics of the neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae) by Menezes, Naércio A.(Universidade de São Paulo Museu de Zoologia), Weitzman, Stanley H.(Smithsonian Institution Division of Fishes)

“…The systematics of the Glandulocaudinae is reviewed in detail and justification for the recognition of the group as a subfamily is discussed. The subfamily…”
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A new genus and species of characid fish from the Amazon basin: the recognition of a relictual lineage of characid fishes (Ostariophysi: Cheirodontinae: Cheirodontini) by Bührnheim, Cristina M.(Universidade Federal do Amazonas ICB Lab. Zoologia), Carvalho, Tiago P.(University of Louisiana at Lafayette Department of Biology), Malabarba, Luiz R.(Universidade Federal do Rio Grande do Sul Departamento de Zoologia), Weitzman, Stanley H.(National Museum of Natural History Department of Zoology Division of Fishes)

“…Amazonspinther dalmata, a new miniature characid from the streams of rio Purus and rio Madeira, right bank tributaries of the rio Amazonas, is described as a…”
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Comparison of spermiogenesis in the externally fertilizing Hemigrammus erythrozonus and the inseminating Corynopoma riisei (Teleostei: Characiformes: Characidae) by Pecio, Anna(Jagiellonian University Institute of Zoology Department of Comparative Anatomy), Burns, John R.(George Washington University Department of Biological Sciences), Weitzman, Stanley H.(Smithsonian Institution National Museum of Natural History Department of Vertebrate Zoology)

“…Spermiogenesis and sperm ultrastructure were analyzed in two species of characids with different modes of fertilization: externally fertilizing Hemigrammus…”
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Two new species and a review of the inseminating freshwater fish genus Monotocheirodon (Characiformes: Characidae) from Peru and Bolivia by Menezes, Naércio A., Weitzman, Stanley H., Quagio-Grassiotto, Irani

“…Two new species of inseminating freshwater fishes of the genus Monotocheirodon, family Characidae, are described from Peru. Males and females of both new…”
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A systematic review of diapoma (teleostei: characiformes: characidae: stevardiinae: diapomini) with descriptions of two new species from southern Brazil by Menezes, Naércio A., Weitzman, Stanley H.

“…Diapoma is reviewed and four species are recognized: (1) Diapoma thauma, new species, from streams of the rio Jacuí basin, state of Rio Grande do Sul; (2) D…”
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Reproductive morphology of Brittanichthys axelrodi (Teleostei: Characidae), a miniature inseminating fish from South America by Javonillo, Robert, Burns, John R., Weitzman, Stanley H.

“…Light and electron microscopy were used to investigate the morphology of reproductive characters in a characid fish, Brittanichthys axelrodi. Spermatozoa were…”
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Sperm and spermatozeugma ultrastructure in the inseminating species Tyttocharax cochui, T. tambopatensis, and Scopaeocharax rhinodus (Pisces: Teleostei: Characidae: Glandulocaudinae: Xenurobryconini) by Pecio, Anna, Burns, John R., Weitzman, Stanley H.

“…This article presents the scanning and transmission electron microscopy of the spermatozoa and sperm packets of three inseminating species of the…”
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Sperm ultrastructure in the inseminating Macropsobrycon uruguayanae (Teleostei: Characidae: Cheirodontinae) by de Oliveira, Cristina L.C., Burns, John R., Malabarba, Luiz R., Weitzman, Stanley H.

“…Macropsobrycon uruguayanae is a small, inseminating characid (tetra) of the tribe Compsurini. Although spermatozoa can be found within the ovarian cavity close…”
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Gill-derived glands in glandulocaudine fishes (teleostei: Characidae: Glandulocaudinae) by Bushmann, Paul J., Burns, John R., Weitzman, Stanley H.

“…The Glandulocaudinae is a subfamily of neotropical characid fishes from Central and South America. A unifying feature of the subfamily is the caudal gland,…”
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Hyphessobrycon melanopleurus uruguayensis Messner, 1962, an available name and a senior synonym of Cyanocharax macropinna Malabarba & Weitzman, 2003 (Ostariophysi: Characidae) by Malabarba, Luiz R., Weitzman, Stanley H., Litz, Thomas

“…Hyphessobrycon melanopleurus uruguayensis, Astyanacinus platensis, and Astyanax stenohalinus, published in a mimeographed paper by Messner in 1962 are…”
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Sperm and Spermatozeugma Structure in Xenurobrycon (Teleostei: Characidae: Stevardiinae: Xenurobryconini) by Burns, John R, Pecio, Anna, Weitzman, Stanley H

“…The main purpose of this study was to describe the morphology of the sperm packets produced by species in the genus Xenurobrycon. Males of the three species…”
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Morphology and histology of the male reproductive system in two species of internally inseminating South American catfishes,Trachelyopterus lucenai andT. galeatus (Teleostei: Auchenipteridae) by Meisner, Amy Downing, Burns, John R., Weitzman, Stanley H., Malabarba, Luiz R.

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Intromittent Organ in the Genus Monotocheirodon (Characiformes: Characidae) by Burns, John R, Weitzman, Stanley H

“…We herein document intromittent organs in four Peruvian populations of inseminating fishes of the family Characidae, genus Monotocheirodon, which may comprise…”
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Sperm and Spermatozeugma Ultrastructure in the Inseminating Catfish, Trachelyopterus lucenai (Ostariophysi: Siluriformes: Auchenipteridae) by Burns, John R, Meisner, Amy D, Weitzman, Stanley H, Malabarba, Luiz R

“…This study presents details of the ultrastructure of the spermatozeugmata and spermatozoa of the South American catfish, Trachelyopterus lucenai, an…”
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Sperm and spermatozeugma ultrastructure in the inseminating speciesTyttocharax cochui,T. tambopatensis, andScopaeocharax rhinodus (Pisces: Teleostei: Characidae: Glandulocaudinae: Xenurobryconini) by Pecio, Anna, Burns, John R., Weitzman, Stanley H.

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Morphology and histology of the male reproductive system in two species of internally inseminating South American catfishes, Trachelyopterus lucenai and T. galeatus (Teleostei: Auchenipteridae) by Meisner, Amy Downing, Burns, John R., Weitzman, Stanley H., Malabarba, Luiz R.

“…As part of an effort to characterize reproductive modifications in internally inseminating catfishes, ovaries and male reproductive systems were examined…”
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NO TITLE AVAILABLE by Weitzman, Stanley H., Menezes, Naércio A., Evers, Hans-Georg, Burns, John R.

“…A new inseminating fish species of the family Characidae, Bryconadenos tanaothoros, from tributaries of the upper rio Xingu and upper rio Tapajós basins, Mato…”
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Ducts of the labral glands of Leptestheria dahalacensis (Crustacea: Branchiopoda: Spinicaudata) by Zeni, Cristina, Stagni, Annamaria

“…Inside the labrum of Leptestheria dahalacensis are situated three types of large epidermal gland cells, whose ducts open onto the outer dorsal surface of the…”
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Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae) by Stanley H. Weitzman, Naércio A. Menezes, Hans-Georg Evers, John R. Burns

“…A new inseminating fish species of the family Characidae, Bryconadenos tanaothoros, from tributaries of the upper rio Xingu and upper rio Tapajós basins, Mato…”
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