Karyotypic diversity and evolution of Loricariidae (Pisces, Siluriformes)

@article{Kavalco2005KaryotypicDA,
  title={Karyotypic diversity and evolution of Loricariidae (Pisces, Siluriformes)},
  author={Karine Frehner Kavalco and Rubens Pazza and Luiz Antonio Carlos Bertollo and Orlando Moreira-Filho},
  journal={Heredity},
  year={2005},
  volume={94},
  pages={180-186}
}
We present cytogenetic analyses of four fish species, belonging to four Loricariidae subfamilies: Neoplecostomus microps (Neoplecostominae) with 2n=54 chromosomes, Harttia loricariformis (Loricariinae) with 2n=56 chromosomes, Hypostomus affinis (Hypostominae) with 2n=66 chromosomes and Upsilodus sp. (Upsilodinae), with 2n=96 chromosomes. In addition to karyotypes, data on the location of 18s rDNA sites are presented, derived from indirect (silver nitrate impregnation) and direct (FISH) methods… 
Chromosome analyses in species of Pareiorhina (Siluriformes, Loricariidae) and cytotaxonomic considerations on the group
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Occurrence of diploid chromosome number and presence of only one pair of NOR bearing chromosomes makes these species to comprised of most plesiomorphic karyotype of Loricariidae and supports its clustering with the genus Neoplecostomus.
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TLDR
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Karyotypic evolution trends in Rhamdia quelen (Siluriformes, Heptapteridae) with considerations about the origin and differentiation of its supernumerary chromosomes.
TLDR
To carry out a wide comparative cytogenetic study in R. quelen from southern and southeastern Brazil and examine a species complex, the chromosomes of 14 populations from the main hydrographic basins of these two regions were analyzed.
Diversity and chromosomal evolution in the genus Ancistrus Kner, 1854 (Loricariidae: Ancistrini) from three hydrographic basins of Mato Grosso State, Brazil
TLDR
Data corroborate the hypotheses of reduction of diploid number in species with derived features such as presence of sex chromosomes and polymorphisms, besides allowing inferences about the evolutionary mechanisms and the ancestor karyotype that favored the diversification of this important genus in the tribe Ancistrini.
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