Results 201 to 210 of about 14,329 (219)
Some of the next articles are maybe not open access.
Heterochromatin and karyotype reorganization in fish of the family Anostomidae (Characiformes)
Cytogenetic and Genome Research, 1991Mitotic chromosomes of four fish species of the family Anostomidae, belonging to the genera <i>Leporinus, Leporellus, </i>and <i>Schizodon, </i>were studied. With 2n = 54 meta- and submetacentric chromosomes, this family appears to be characterized by marked karyotypic stability. Although perceptible differences exist, mainly in
Galetti, P. M. +3 more
openaire +3 more sources
Characiformes SENSU FINK AND FINK 1981
2004Published as part of FILLEUL, ARNAUD & MAISEY, JOHN G., 2004, Redescription of Santanichthys diasii (Otophysi, Characiformes) from the Albian of the Santana Formation and Comments on Its Implications for Otophysan Relationships, pp. 1-22 in American Museum Novitates 3455 (1) on pages 4-16, DOI: 10.1206/0003-0082(2004)4552.0.CO;2, http://zenodo.org ...
FILLEUL, ARNAUD, MAISEY, JOHN G.
openaire +1 more source
Ionoregulatory Characteristics of Non–Rio Negro Characiforms and Cichlids
Physiological and Biochemical Zoology, 2017We examined ionoregulatory characteristics of two species of characiform fish and two species of cichlids that are not native to the Rio Negro, an extremely ion-poor, acidic tributary of the Amazon River, in order to gain insight into the origin of the specializations possessed by Rio Negro fish.
R J, Gonzalez, S L, Jones, T V, Nguyen
openaire +2 more sources
Curimatopsis myersi, a new curimatid characiform fish (Pisces: Characiformes) from Paraguay
1982(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +1 more source
A phylogeny of Astyanax (Characiformes: Characidae) in Central and North America
Zootaxa, 2016A phylogeny is presented for 34 species of Astyanax, 27 of them once included within A. aeneus or A. fasciatus in Central America and Mexico, based on 52 morphological characters (mostly osteological, but also pigmentation and meristics), with three outgroups. Monophyly is not supported for A. aeneus s. lat., as Brazilian species such as A. fasciatus s.
openaire +2 more sources
Intromittent Organ in the Genus Monotocheirodon (Characiformes: Characidae)
Copeia, 2006Abstract We herein document intromittent organs in four Peruvian populations of inseminating fishes of the family Characidae, genus Monotocheirodon, which may comprise new species. All females histologically analyzed from these populations, as well as a female of Monotocheirodon pearsoni, had spermatozoa within the ovary, confirming insemination.
John R. Burns, Stanley H. Weitzman
openaire +1 more source
Revision of the Piranha Genus Pygocentrus (Teleostei, Characiformes)
Copeia, 1993, AND M. V. PLUMMER. 1987. Population ecology, p. 253-301. In: Snakes: ecology and evolutionary biology. R. A. Seigel, J. T. Collins, and S. S. Novak (eds.). Macmillan Publ. Co., New York, New York. , PLUMMER, M. V. 1990. High predation on green snakes, Opheodrys aestivus. J. Herpetol. 24:327-328. Ross, D. A. 1989.
openaire +1 more source