Thesis

Systematics and evolution of the Glass Knifefishes Eigenmannia (Gymnotiformes: Sternopygidae): Cryptic diversity in a morphologically-conserved group

Waltz, B.T.

Record Number:
5756
Year:
2019
Pages:
302 pages
University:
Dissertation Presented to the Graduate Faculty of the University of Louisiana at Lafayette In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy
Abstract:
This doctoral dissertation focuses on the genetic, geographic, and morphological bases of speciation in glass knifefishes of the genus Eigenmannia, a species-rich but morphologically-conserved clade of Neotropical freshwater fishes. The Neotropical freshwater ichthyofauna is the most diverse on Earth, encompassing >8,000 species or approximately one-quarter of all living fishes. The freshwater fish genus Eigenmannia represents an excellent model in which to study the formation of this immense diversity, exhibiting many features commonly observed in members of the fauna. Eigenmannia has diversified into at least 21 species, including a few geographically widespread and many geographically restricted species. Further, Eigenmannia species exhibit little divergences in features of external morphology, such that most sister-species pairs do not differ substantially in ecologicallyrelated aspects of head and jaw morphology, but rather differ primarily on the basis of social communication signals and karyotypes. Such a cryptic (or in some cases pseudocryptic) nature of phenotypic differences among closely related species has hampered efforts to document diversity in this genus, as in the Neotropical fauna as a whole, and obscured the role of ecological and evolutionary processes in producing this incredible species richness.
Times Cited:
1
Related Records:
Trajano, E. and de Souza, A. M. (1994)
Behaviour of Ancistrus cryptophthalmus an armoured blind catfish from caves of central Brazil, with notes on syntopic Trichomycterus sp. (Siluriformes, Loricariidae, Trichomycteridae)
Triques, ML (1996)
Eigenmannia vicentespelaea, a new species of cave dwelling electrogenic neotropical fish (Ostariophysi: Gymnotiformes: Sternopygidae)
Bichuette, M.E. (2001)
Populational study and compared behaviour of Eigenmannia species from Goias, Central Brazil (Ostariophysi: Gymnotiformes: Sternopygidae)
Albert, J.S. (2001)
Species diversity and phylogenetic systematics of American knifefishes (Gymnotiformes, Teleostei).
Fernandez, L. and Bichuette, M.E. (2002)
A new cave dwelling species of Ituglanis from the Sao Domingos karst, central Brazil (Siluriformes: Trichomycteridae)
Bichuette, M.E. (2003)
Distribuicao, biologia, ecologia populacional e comportamento de peixes subterraneos, generos Ituglanis (Siluriformes: Trichomycteridae) e Eigenmannia (Gymnotiformes: Sternopygidae) da area carstica de Sao Domingos, nordeste de Goias
Reis, R.E., Kullander, S.O. and Ferraris, C.J. (2003)
Checklist of the freshwater fishes of South and Central America
Bichuette, M.E. and Trajano, E (2003)
Epigean and subterranean ichthyofauna from the Sao Domingos karst area, Upper Tocantins River basin, central Brazil
Moyses, C.B., Mockford, S., Almeida-Toledo, F. and Wright, J.M. (2005)
Nine polymorphic microsatellite loci in the Neotropical electric eel Eigenmannia (Teeleostei: Gymnotiformes)
Bichuette, M.E. and Trajano, E. (2006)
Morphology and distribution of the cave knifefish Eigenmannia vicentespelaea Triques, 1996 (Gymnotiformes: Sternopygidae) from central Brazil, with expanded diagnosis and comments on subterranean evolution
Bichuette, M.E. (2008)
Eigenmannia vicentespelaea Triques 1996
Bichuette, M.E. and Trajano, E. (2015)
Population density and habitat of an endangered cave fish Eigenmannia vicentespelaea Triques, 1996 (Ostariophysi: Gymnotiformes) from a karst area in central Brazil
Peixoto, L.A.W., Dutra, G.M. and Wosiacki, W.B. (2015)
The Electric Glass Knifefishes of the Eigenmannia trilineata species-group (Gymnotiformes: Sternopygidae): monophyly and description of seven new species
Trajano, E., Gallao, J.E. and Bichuette, M.E. (2016)
Spots of high biodiversity of troglobites in Brazil: the challenge of measuring subterranean diversity
Ferraris, C.J., de Santana, C.D. and Vari, R.P. (2017)
Checklist of Gymnotiformes (Osteichthyes: Ostariophysi) and catalogue of primary types
Fortune, E., Andanar, N., Madhav, M., Jayakumar, R., Cowan, N., Bichuette, M.L. and Soares, D. (2017)
Differences in electromotor behaviors in blind electric cavefish and their surface relatives
Bichuette, M.E. and Trajano, E. (2017)
Biology and behavior of Eigenmannia vicentespelaea, a troglobitic electric fish from Brazil (Teleostei: Gymnotiformes: Sternopygidae): a comparison to the epigean species, E. trilineata, and the consequences of cave life
Gallão, J.E. and Bichuette M.E. (2018)
Brazilian obligatory subterranean fauna and threats to the hypogean environment
Lin, R., Ge, J., Tran, P., Alberto Perea, L., Toole, R. and Fok, M.P. (2018)
Biomimetic photonics: jamming avoidance system in Eigenmannia
Waltz, B.T. and Albert, J.S. (2018)
Family Sternopygidae - Glass knifefishes, Rattail knifefishes
Bichuette, M.E., Simões, L.B., Zepon, T., von Schimonsky, D.M. and Gallão, J.E. (2019)
Richness and taxonomic distinctness of cave invertebrates from the northeastern state of Goiás, central Brazil: a vulnerable and singular area
Soares, D., Andanar, N., Madhav, M., Jayakumar, R., Cowan, N., Bichuette, B. and Fortune, E.S. (2019)
Differences in electrosocial behavior in troglobitic and epigean Eigenmannia
Peixoto, L.A.W. and Ohara, W.M. (2019)
A new species of Eigenmannia Jordan & Evermann (Gymnotiformes: Sternopygidae) from rio Tapajo´s, Brazil, with discussion on its species group and the myology within Eigenmanniinae
Crampton, W.G.R. (2019)
Electroreception, electrogenesis and electric signal evolution
Fortune, E.S., Andanar, N., Madhav, M., Jayakumar, R., Cowan, N.J., Bichuette, M.E. and Soares, D. (2019)
Spooky interaction at a distance in cave and surface dwelling electric fishes
Waltz, B.T. (2019)
Systematics and evolution of the Glass Knifefishes Eigenmannia (Gymnotiformes: Sternopygidae): Cryptic diversity in a morphologically-conserved group
Peixoto, L.A.W., Pastana, M.N.L. and Ballen, G.A. (2021)
New species of glass knifefish genus Eigenmannia (Gymnotiformes: Sternopygidae) with comments on the morphology and function of the enlarged cephalic lateral-line canals of Sternopygidae
Dutra, G.M., Peixoto, L.A.W., Abrahão, V.P., Wosiacki, W.B., Menezes, N.A. and de Santana, C.D. (2021)
Morphology-based phylogeny of Eigenmanniinae Mago-Leccia 1978 (Teleostei: Gymnotiformes: Sternopygidae), with a new classification.
Ford, K.L. and Albert, J.S. (2022)
Is the medium the message? Functional diversity across abiotic gradients in freshwater electric fishes. Electric fish functional diversity
Araya-Jaime, C.A., Mazzoni Zerbinato de Andrade Silva, D., Ribeiro da Silva, L.R., Neves do Nascimento, C., Oliveira C, Foresti, F. (2022)
Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences in Eigenmannia limbata and E. microstoma (Teleostei, Gymnotiformes, Sternopygidae)
Peixoto, L.A.W. and de Pinna, M. (2022)
Patterns of diversification and phylogenetic structure in the dorsolateral head musculature of Neotropical electric eels (Ostariophysi: Gymnotiformes), with a myological synonymy