Two New Acanthocephalans from Neotropical Fishes: Neoechinorhynchus prochilodorum sp. n. and Gorytocephalus plecostomorum gen. et sp. n.

1971 ◽  
Vol 57 (3) ◽  
pp. 576 ◽  
Author(s):  
Brent B. Nickol ◽  
Vernon E. Thatcher
Keyword(s):  
Neotropical Fishes

Miocene marine incursions and marine/freshwater transitions: Evidence from Neotropical fishes

2006 ◽  
Vol 21 (1-2) ◽  
pp. 5-13 ◽  
Author(s):  
Nathan R. Lovejoy ◽  
James S. Albert ◽  
William G.R. Crampton
Keyword(s):  
Neotropical Fishes

scholarly journals Review of the family Rivulidae (Cyprinodontiformes, Aplocheiloidei) and a molecular and morphological phylogeny of the annual fish genus Austrolebias Costa 1998

2018 ◽  
Vol 16 (3) ◽  
Author(s):  
Marcelo Loureiro ◽  
Rafael de Sá ◽  
Sebastián W. Serra ◽  
Felipe Alonso ◽  
Luis Esteban Krause Lanés ◽  
...  
Keyword(s):  
Phylogenetic Relationships ◽  
The Self ◽  
Phylogenetic Hypothesis ◽  
Annual Life Cycle ◽  
Internal Fertilization ◽  
Annual Fish ◽  
Diapausing Eggs ◽  
Neotropical Fishes ◽  
Seasonal Ponds ◽  
The Family

ABSTRACT The family Rivulidae is the fourth most diverse clade of Neotropical fishes. Together with some genera of the related African family Nothobranchiidae, many rivulids exhibit a characteristic annual life cycle, with diapausing eggs and delayed embryonic development, which allows them to survive in the challenging seasonal ponds that they inhabit. Rivulidae also includes two species known as the only the self-fertilizing vertebrates and some species with internal fertilization. The first goal of this article is to review the systematics of the family considering phylogenetic relationships and synapomorphies of subfamilial clades, thus unifying information that is dispersed throughout the literature. From this revision, it is clear that phylogenetic relationships within Rivulidae are poorly resolved, especially in one of the large clades that compose it, the subfamily Rivulinae, where conflicting hypotheses of relationships of non-annual and annual genera are evident. The second goal of this work is to present an updated phylogenetic hypothesis (based on mitochondrial, nuclear, and morphological information) for one of the most speciose genus of Rivulidae, Austrolebias. Our results confirm the monophyly of the genus and of some subgeneric clades already diagnosed, but propose new relationships among them and their species composition, particularly in the subgenus Acrolebias.

Karyotypic Evolution in Neotropical Fishes

2007 ◽  
pp. 111-164 ◽  
Author(s):  
Claudio Oliveira ◽  
Lurdes Foresti de Almeida-Toledo ◽  
Fausto Foresti
Keyword(s):  
Karyotypic Evolution ◽  
Neotropical Fishes

scholarly journals Editorial: Genetics, Evolution, and Conservation of Neotropical Fishes

2019 ◽  
Vol 10 ◽  
Author(s):  
Rodrigo Augusto Torres ◽  
Roberto Ferreira Artoni
Keyword(s):  
Neotropical Fishes

scholarly journals New Insights into the Distribution, Physiology and Life Histories of South American Galaxiid Fishes, and Potential Threats to This Unique Fauna

Diversity ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 178 ◽  
Author(s):  
Víctor Enrique Cussac ◽  
María Eugenia Barrantes ◽  
Claudia Clementina Boy ◽  
Konrad Górski ◽  
Evelyn Habit ◽  
...  
Keyword(s):  
Life Histories ◽  
Fish Fauna ◽  
South American ◽  
World Knowledge ◽  
Neotropical Fishes ◽  
Key Species ◽  
The Family ◽  
Total Fish ◽  
Temperate Fish ◽  
Lamprey Species

South American galaxiids occupy both Patagonia and the ichthyogeographic Chilean Province, encompassing glacial Andean deep lakes, shallow plateau lakes, reservoirs, short Pacific rivers and long Atlantic rivers. The total fish fauna includes 29 species, comprising Neotropical fishes (siluriforms and characids), galaxiids, percichthyids, atherinopsids and mugilids, two lamprey species, and several exotic fishes (salmonids, Gambusia spp. and common carp). The family Galaxiidae shares a common ancestry with the Gondwanan temperate fish fauna, played a major role in the post-glacial colonization of Andean lakes and streams, and contributes key species to the food webs. Galaxiid species occupy an enormous latitudinal gradient, show a wide variety of life history patterns and are the southernmost native freshwater fishes of the world. Knowledge of South American galaxiids has improved notably, but new challenges arise due to climate change, biological invasions, damming, aquaculture and contamination. In this changing environment, the future of South American galaxiids should be carefully considered as a legacy of the old Gondwana and a unique attribute of the freshwaters of southern South America.

scholarly journals Chromosomal Evolution in Lower Vertebrates: Sex Chromosomes in Neotropical Fishes

Genes ◽  
2017 ◽  
Vol 8 (10) ◽  
pp. 258 ◽  
Author(s):  
Marcelo de Bello Cioffi ◽  
Cassia Fernanda Yano ◽  
Alexandr Sember ◽  
Luiz Antônio Carlos Bertollo
Keyword(s):  
Sex Chromosomes ◽  
Chromosomal Evolution ◽  
Neotropical Fishes ◽  
Lower Vertebrates

Genetic Resources of Neotropical Fishes

2017 ◽  
Author(s):  
Alexandre W. S. Hilsdorf ◽  
Eric M. Hallerman
Keyword(s):  
Genetic Resources ◽  
Neotropical Fishes

scholarly journals The dawn of phylogenetic research on Neotropical fishes: a commentary and introduction to Baskin (1973), with an overview of past progress on trichomycterid phylogenetics

2016 ◽  
Vol 14 (2) ◽  
Author(s):  
Mário C. C. de Pinna
Keyword(s):  
Quantitative Analysis ◽  
Molecular Data ◽  
Neotropical Fishes ◽  
Phylogenetic Methods ◽  
The Family ◽  
The Impact

ABSTRACT A review is made of the impact of the landmark Ph. D. Thesis of Jonathan N. Baskin from 1973 on the development of the phylogenetics of catfishes and some of its main subgroups and on neotropical ichthyology in general. Baskin's work is the first to propose a hypothesis of relationships for loricarioid catfishes and for the family Trichomycteridae on the basis of explicit Hennigian principles. It is arguably also the first application of phylogenetic methods to any group of neotropical fishes. The hypotheses presented by Baskin covered the monophyly of Siluriformes, the monophyly and relationships of loricarioid families and the relationships of Trichomycteridae (including the monophyly of the family and the relationships among its constituent genera). His discoveries are analyzed in view of the subsequent 40-odd years of progress on the understanding of the phylogeny of the respective groups. The ideas proposed in 1973 have resisted the test of time remarkably well, and a majority of them have been corroborated by additional characters and taxa (including molecular data and several taxa newly discovered in the meantime), as well as by modern quantitative analysis.

A new Gymnotus (Teleostei: Gymnotiformes: Gymnotidae) from the Pantanal Matogrossense of Brazil and adjacent drainages: continued documentation of a cryptic fauna

Zootaxa ◽  
2005 ◽  
Vol 933 (1) ◽  
pp. 1 ◽  
Author(s):  
FLORA M.C. FERNANDES ◽  
JAMES S. ALBERT ◽  
MARIA D.F.Z. DANIEL-SILVA ◽  
CARLOS E. LOPES ◽  
WILLIAM G.R. CRAMPTON ◽  
...  
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Dna Amplification ◽  
Molecular Data ◽  
Body Cavity ◽  
The Body ◽  
New Taxon ◽  
Neotropical Fishes ◽  
Posterior Lateral Line ◽  
Floating Macrophytes

Here we describe a new species of Gymnotus, G. pantanal n. sp., from the Pantanal Matogrossense of Brazil, using morphological, cytogenetic, and molecular data. Specimens ascribed to the new species are also known from areas downstream in Paraguay, and from the adjacent Guaporé basin of Bolivia. The new species most closely resembles G. anguillaris in possessing an elongate body, slender profile, long body cavity, and shorter head than other congeners. The new species also resembles G. anguillaris in the presence of pale narrow bands restricted to the area below the lateral line on the anterior half of the body. The new taxon differs from G. anguillaris in possessing more narrowly set eyes, a wider and deeper head, a larger branchial opening, longer pectoral fins with more fin rays, and fewer pored posterior lateral-line scales. The new species inhabits rooted grasses and floating macrophytes in small creeks and along the banks of larger blackwater rivers. Populations are found syntoptically with G. inaequilabiatus and G. sylvius. Compared with these species, the new species exhibits a distinct combination of microsatellite DNA amplification patterns, and chromosomal and external features. These results confirm earlier studies showing the power of a multidisciplinary approach to characterizing the enormous and often cryptic diversity of Neotropical fishes.

Sign in / Sign up

Export Citation Format

Share Document