Download or read book Phylogenetic study of the neotropical fish genere Creagrutus G nther and Piabina Reinhardt Teleostei Ostariophysi Characiformes with a revision of the cis Andean species written by Richard P. Vardi and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phylogenetic Study of the Neotropical Fish Genera Creagrutus G nther and Piabina Reinhardt Teleostei Ostariophysi Characiformes with a Revision of the Cis Andean Species written by Richard P. Vari and published by . This book was released on 2001 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phylogeny and Classification of Neotropical Fishes written by Luiz R. Malabarba and published by Edipucrs. This book was released on 1998 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neotropical ichthyology: an overview; Fossils and geological evidence; The stage for neotropical fish diversification: a history of tropical south american rivers; The temporal context for the diversification of neotropical fishes; Phylogeny of fossil characiformes and paleobiogeography of the Tremembe formation, Sao Paulo; Brazil; Maastrichtian to early late paleocene freshwater osteichthyes of Bolivia: additions and comments; Characiformes; Higher lever phylogenetic concepts within characiforms (Ostariophysi), a historical review; Relationships of the characidiinae and phylogeny of characiform fishes (Teleostei: ostariophysi); Phylogenetic study of the hemiodontidae (Ostariophysi: characiformes); Perspectives about the phylogeny and classification of the chacidae (Teleostei: Characiformes); Relationships of the tribes and genera of the glandulocaudinae (Ostariophysi: characiformes: characidae) with a description of a New Genus, Chrysobrycon; Monophyly of the Cheirodontinae, characters and major clades (Ostariophysi: characidae); Sperm ultrastructure in characid fishes (Teleostei: ostariophysi); The genus Creagrutus (Teleostei: Characiformes: Characidae): monophyly, relationships, and undetected diversity; A phylogenetic analysis of Roestes Gunther and Gilbertolus Eigenmann, with a hypothesis on the relationships of the Cynodontidae and Acestrorhynchidae (Teleostei: Ostariophysi: Characiformes); Siluriformes; Phylogenetic relationships of neotropical siluriformes: historical overview and synthesis of hypotheses; Monophyly and interrelationships of the Centromochlinae (Siluriformes: Auchenipteridae); Systematics, biogeography, and the fossil record of the Callichthyidae: a review of the available data; Phylogenetic relationships of the Loricariidae (Siluriformes) based on mitochondrial rRNA gene sequences; Conflict and resolution: impact of new taxa on phylogenetic studies of the neotropical cascudinhos (Siluroidei: Loricariidae); Gymnotiformes; The Gymnotiform "Eels" of tropical America: a history of classification and phylogeny of the South American electric Knifefishes (Teleostei: Ostariophysi: Siluriphysi); Phylogenetic systematics of Gymnotiformes with diagnoses of 58 clades: a review of available data; The phylogenetic position of the South America Electric Fish genera Sternophygus and Archolaemus (Ostariophysi: Gymnotiformes) according to 12s and 16s mitochondrial DNA sequences; Perciformes; A phylogeny and classfication of the South American Cichlidae (Teleostei: Perciformes); Molecular phylogeny of neotropical cichlids: the relationships of Cichlasomines and heroines; Mitochondrial phylogenetics, biogeography, and evolution of parental care and mating systems in Gymnogeophagus (Perciformes: Cichlidae); Atherinomorpha; Phylogenetic systematics and historical biogeography of the neotropical silverside family Atheronopsidae (Teleostei: Atheriniformes); Phylogeny and classification of the Cyprinodontiformes (Euteleostei: Atherinomorpha): a reappraisal; Phylogeny and classification of the Anablepidae (Teleostei: Cyprinodontiformes); Cytogenetic markers; Cytogenetic markers in neotropical freshwater fishes.
Download or read book The Neotropical Fish Family Ctenoluciidae Teleostei Ostariophysi Characiformes written by Richard P. Vari and published by . This book was released on 1995 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Neotropical Fish Family Ctenoluciidae Teleostei Ostariophysi Characiformes written by Alessandra R. Baptista and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Neotropical Fish Family Chilodontidae Teleostei Characiformes written by Richard P. Vari and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Neotropical Fish Family Ctenoluciidae Teleostei written by Richard P. Vari and published by . This book was released on 1995 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The neotropical fish family Ctenoluciidae Teleostei Ostariophysi Characaiformes written by Richard P. Vari and published by . This book was released on 1995 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Phylogenetic Study of the Neotropical Characiform Family Curimatidae Pisces written by Richard P. Vari and published by . This book was released on 1989 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Fishes of the Fresh Waters of Panama written by Seth Eugene Meek and published by . This book was released on 1916 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Phylogenetics of the Neotropical Electric Knifefish Genus Gymnotus Gymnotidae Teleostei Biogeography and Signal Evolution of the Trans Andean Species written by Kristen Brochu and published by . This book was released on 2011 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gymnotus, the banded electric knifefish, is a diverse genus with a range that extends from Argentina to southern Mexico and includes species distributed both east (cis-Andean) and west (trans-Andean) of the Andes. Each Gymnotus species exhibits a distinctive electric organ discharge (EOD), used for communication and navigation. Here, I present a new molecular phylogenetic hypothesis for 35 Gymnotus species based on two mitochondrial (cyt b and 16 S) and two nuclear genes (RAG2 and Zic1). I found that the trans-Andean species are distributed in four distinct lineages with varying amounts of divergence from their closest cis-Andean sister taxa. I suggest that not all trans-Andean species evolved as a result of the orogeny of the Andes. I evaluate EOD phase number evolution in Gymnotus and find a trend for reduced phase numbers in both cis- and trans-Andean regions. Finally, I suggest hypotheses to account for the patterns of EOD phase number diversification.
Download or read book Tempo and Mode of Diversification in the Neotropical Fish Superfamily Anostomoidea Ostariophysi Characiformes written by Benjamin W. Frable and published by . This book was released on 2015 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neotropical characiform fishes form one of the most diverse freshwater ichthyofauna in the world. Knowledge of evolutionary processes that generated and maintain the immense characiform lineage and morphological diversity is still poorly understood. When did characiform lineages diversify? How have major geological and environmental changes affected diversification? Why are some clades seemingly more morphologically diverse than others? I examine the characiform superfamily Anostomoidea to address these broader questions of Neotropical diversification. The abundant Neotropical freshwater fish superfamily Anostomoidea contains two clades with seemingly disparate evolutionary strategies. The first group, the anostomids, represent ~150 species with a wide variety of body coloration, mouth position, tooth shape and trophic strategies ranging from generalist to herbivory to insectivory. The other major group, the families: Curimatidae, Chilodontidae and Prochilodontidae, contains around the same number of species but members are silvery with some pigmentation, have little variation in mouth position, possess reduced or no teeth and all feed mostly on detritus. The Prochilodontidae are some of the most abundant fish by biomass in South America and participate in mass-migrations for spawning and feeding. This group is characterized by low morphological diversity, large-body size and is generally resilient to small-scale vicariance barriers. As such, I use this widespread family to investigate the influence of large-scale paleoecological events, such as the rise of the Andean Eastern Cordilleras, on diversification of Neotropical fishes. I estimated the first time-calibrated molecular phylogeny for the family Prochilodontidae and compared diversification rate and events with known paleoecological events. Vicariance barriers and other events significantly impacted the historical biogeography of Prochilodontidae, supporting their role in generating the astounding diversity of Neotropical fishes. In the second part, I investigated whether the morphologically depauperate detritivore clade actually contains a high number of ecologically equivalent species or if they are diversifying in a previously unstudied manner. There is substantially more variation in the arrangement of the gill arches, which are used in processing food, within the detritivores than in the trophically-diverse anostomids. The two clades have evolved over similar amounts of time, but differ in how efficiently they developed new gill morphologies. Through cladogenesis, detritivorous lineages evolved significantly different morphologies more readily and potentially more frequently than the anostomids. The significant diversity and evolutionary pattern of detritivore gill arch shape indicates that selection is acting on how they process food and demonstrates that detritivory encompasses a spectrum of ecomorphological specialization.
Download or read book Phylogenetic and Revisionary Taxonomic Studies of the Banded Knifefishes Gymnotus teleostei Ostariophysi Gymnotiformes with Descriptions of Fourteen New Species written by Emmanuel Maxime and published by . This book was released on 2013 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phylogenetic Revision of Atherinopsinae Teleostei Atherinopsidae with Comments on the Systematics of the South American Freshwater Fish Genus Basilichthys Girard written by Brian Spencer Dyer and published by . This book was released on 1997 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phylogeography of the Neotropical Fish Genus Rhoadsia Teleostei Characidae in Ecuador written by Roberto Valentino Cucalón Tamayo and published by . This book was released on 2019 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Western Ecuador is considered a biodiversity hotspot. Nevertheless, studies of population genetic structure and variation are rare, especially in aquatic species. The genus Rhoadsia is an endemic freshwater fish in this region with two recognized species, Rhoadsia minor and R. altipinna. Little is known about the evolutionary relationships of their populations, and due to morphological similarities, their validity as distinct species has been questioned. The present study uses a phylogeographic approach to examine the evolutionary history of the genus and the validity of the two described species. Furthermore, I investigated the possible geographical origin of the genus based on patterns of genetic diversity and genetic distance from two sister genera. I also estimated potential zoogeographic breaches based on patterns of genetic divergence that could reflect points of genetic divergence between populations of other freshwater fishes. I used several molecular markers with different rates of evolution: cytochrome oxidase I (COI) and cytochrome b (Cyt-b) from the mitochondrial genome (mtDNA) and 12 microsatellite loci from the nuclear genome (nDNA). Sampling was conducted in drainages across Western Ecuador and an effort was made to sample at different elevations (from 30 to 1260 m above sea level), given the known patterns of morphological divergence associated with elevation. The phylogenetic tree resolved with the mtDNA data confirmed the presence of two species exhibiting genetic introgression at the border between the species ranges (Northern Guayas). A Bayesian-based analysis of the microsatellite data revealed the existence of ten populations of Rhoadsia divided into three main groups (I, II, and III). Group I coincided with the distribution of R. minor while group II and III seemed to represent geographic subgroups of R. altipinna. Patterns of genetic divergence and diversity were used to suggest potential evolutionarily significant units within both species for conservation efforts. The most likely geographical origin of the genus appeared to be in the Guayas drainage. However, this result is a hypothesis and should be examined more carefully in the future using other approaches. Two major zoogeographic breaches were identified: the first one was between the two largest drainages (Esmeraldas and Guayas) and the second one was located farther south cutting through the Jubones drainage and isolating the central Guayas and drainages just south from the southernmost drainages of western Ecuador. Future research should include biological and ecological data to reinforce the validity of the species. I also suggest looking for signals of adaptive divergence between species or between populations from contrasting habitats like low and high elevations. This study provides a baseline for future studies examining biogeographic relationships of freshwater species in Western Ecuador.
Download or read book Molecular Phylogenetics of Otophysan Fishes written by Jairo Andres Arroyave Gutierrez and published by . This book was released on 2013 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Otophysan fishes (Ostariophysi: Otophysi) are members of a morphologically and ecologically diverse clade of teleosts that includes most freshwater species of fish, and comprises four major lineages classified in the orders Cypriniformes, Characiformes, Siluriformes, and Gymnotiformes, respectively. Partly because of their tremendous diversity, many groups of otophysan fishes remain poorly understood phylogenetically and in a state of taxonomic disarray. This is the case--to a greater or lesser extent--of African characiforms of the suborder Citharinoidei and the family Alestidae, Afro-Asian cypriniforms of the tribe Chedrini, and Neotropical siluriforms of the subfamily Loricariinae. To address the lack of robust, comprehensive, and/or up-to-date phylogenetic hypotheses for the aforementioned groups, this doctoral dissertation investigated their systematics and evolution through phylogenetic analyses of comparative DNA sequence data, including molecular-clock analyses that resulted in the first time-calibrated phylogenies ever proposed for both alestids and citharinoids (and characiforms for that matter). The molecular phylogenies arrived at herein represent the most comprehensive hypotheses of relationships for each of the groups investigated. Although many of the relationships revealed by this study corroborated previous hypotheses based on morphological and/or molecular data, others are newly hypothesized or in conflict. Moreover, the results of this research revealed instances of para- and polyphyly in numerous nominal taxa (e.g., Brycinus [Alestidae], Nannocharax [Distichodontidae], Raiamas [Chedrini], Lamontichthys [Loricariinae]), prompting a reassessment of the taxonomies of the groups investigated. Information on the temporal context of alestid and citharinoid diversification was used to assess biogeographic hypotheses proposed to explain the Gondwanan distribution of characiforms. Likewise, the inferred chronograms shed some critical light on the historical processes that may have influenced diversification and biogeographic patterns in these and other groups of African freshwater fishes.
Download or read book A Phylogenetic and Biogeographic Analysis of Cyprinodontiform Fishes Teleostei Atherinomorpha written by Lynne R. Parenti and published by . This book was released on 1981 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
