A Clade of Non-Sexually Dimorphic Ponyfishes (Teleostei: Perciformes: Leiognathidae): Phylogeny, Taxonomy, and Description of a New Species

@inproceedings{Sparks2004ACO,
  title={A Clade of Non-Sexually Dimorphic Ponyfishes (Teleostei: Perciformes: Leiognathidae): Phylogeny, Taxonomy, and Description of a New Species},
  author={John S. Sparks and Paul V. Dunlap},
  year={2004}
}
Abstract A phylogeny was generated for Leiognathidae, commonly known as ponyfishes, using nucleotide characters from two mitochondrial genes. Results indicate that Leiognathidae comprises two major clades, one consisting of species that exhibit internally sexually dimorphic light-organ systems (LOS), and the Leiognathus equulus species complex, whose members exhibit neither internal nor external sexual dimorphism of the LOS. Species with internally sexually dimorphic LOS generally also exhibit… 

Description of a new genus of ponyfishes (Teleostei: Leiognathidae), with a review of the current generic-level composition of the family.

TLDR
Photolateralis, new genus, is unique among ponyfishes in possessing a translucent mid-lateral flank stripe, which depending on the species, may be either a composite "stripe" comprised of numerous independent translucent windows, or a continuous translucent lateral stripe.

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TLDR
It is hypothesized that the species‐specific, sexually dimorphic internal and external modifications of the leiognathid LOS provide compelling evidence for an assortative mating scheme in which males use species‐ specific patterns of lateral luminescence signaling to attract mates, and that this system functions to maintain reproductive isolation in these turbid coastal environments.

A New Species of Ponyfish (Teleostei: Leiognathidae: Photoplagios) from Madagascar, with a Phylogeny for Photoplagios and Comments on the Status of Equula lineolata Valenciennes

TLDR
A phylogeny for Photoplagios is provided based on the simultaneous analysis of anatomical features of the light-organ system and nucleotide characters and the taxonomic status of Equula lineolata Valenciennes is discussed, and the species is concluded to be a nomen dubium of uncertain placement beyond the family level.

Evolution of the light organ system in ponyfishes (Teleostei: Leiognathidae)

TLDR
Both internal and external sexual dimorphism in the ponyfish LOs were recovered as most likely to have evolved in the common ancestor of Leiognathidae, and likelihood‐based correlation analyses indicate that the evolution ofinternal and external dimorphisms in males is statistically correlated.

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Is sexual selection driving diversification of the bioluminescent ponyfishes (Teleostei: Leiognathidae)?

TLDR
The results suggest that if sexual selection is occurring in ponyfish evolution, it is likely acting only as a genetic isolating mechanism that has allowed ponyfishes to continuously diversify over time, with no overall impact on increases in diversification rate or morphological disparity.

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TLDR
A new species belonging to the leiognathid genus Photolateralis, collected from the coastal waters of Oman, is described herein and is characterized by a lower jaw that is deep and convex in lateral view.

Early Miocene Ponyfishes (Acanthuriformes, Leiognathidae) of the Carpathian Basin

The fossil record of ponyfishes (Leiognathidae) is documented by the presence of skeletal remains and otoliths in Europe, Africa and Asia. Here we describe in detail a set of skeletal imprints from

MOLECULAR PHYLOGENY OF LEIOGNATHIDAE IN THE WATERS OF PERHENTIAN ISLANDS, TRENGGANU, MALAYSIA

TLDR
16S mitochondrial rRNA gene sequences were used to infer the phylogenetic relationships among nine morphospecies of leiognathids and showed that 16S mitochondria rDNA is a good marker for phylogenetic analysis of the Leiognathidae.

The new genus Eoleiognathus for the percoid fish Pygaeus dorsalis Agassiz from the Eocene of Bolca in northern Italy, a putative ponyfish (Perciformes, Leoignathidae)

The new genus Eoleiognathus of putative leiognathid fish (Perciformes, Percoidei) is established for Pygaeus dorsalis Agassiz, 1838 from the Eocene locality of Bolca in northern Italy. This genus

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It is hypothesized that the species‐specific, sexually dimorphic internal and external modifications of the leiognathid LOS provide compelling evidence for an assortative mating scheme in which males use species‐ specific patterns of lateral luminescence signaling to attract mates, and that this system functions to maintain reproductive isolation in these turbid coastal environments.

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