<i>Sundasalanx</i>(Sundasalangidae) is a progenetic clupeiform, not a closely‐related group of salangids (Osmeriformes): mitogenomic evidence

Ishiguro, Nozomu; Miya, Masaki; Inoue, Jun; Nishida, Mutsumi

doi:10.1111/j.0022-1112.2005.00746.x

Cited by 26 publications

(13 citation statements)

References 34 publications

(29 reference statements)

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“…Siebert [34] proposed that Sundasalanx is indeed a clupeid possibly related to the genus Jenkinsia . Ishiguro et al [35] confirmed the placement of Sundasalanx within the Clupeiformes, but as a distinct family (Sundasalangidae) of uncertain affinities. Subsequent molecular studies did not provide better evidence to resolve the phylogenetic position of Sundasalanx within the Clupeiformes because of incomplete taxonomic sampling [24], [26], [27], [36].…”

Section: Discussionmentioning

confidence: 95%

Mitogenomic Evidence for an Indo-West Pacific Origin of the Clupeoidei (Teleostei: Clupeiformes)

et al. 2013

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The clupeoid fishes are distributed worldwide, with marine, freshwater and euryhaline species living in either tropical or temperate environments. Regional endemism is important at the species and genus levels, and the highest species diversity is found in the tropical marine Indo-West Pacific region. The clupeoid distribution follows two general pattern of species richness, the longitudinal and latitudinal gradients. To test historical hypotheses explaining the formation of these two gradients, we have examined the early biogeography of the Clupeoidei in reconstructing the evolution of their habitat preferences along with their ancestral range distributions on a time-calibrated mitogenomic phylogeny. The phylogenetic results support the distinction of nine main lineages within the Clupeoidei, five of them new. We infer several independent transitions from a marine to freshwater environment and from a tropical to temperate environment that occurred after the initial diversification period of the Clupeoidei. These results combined with our ancestral range reconstruction hypothesis suggest that the probable region of origin and diversification of the Clupeoidei during the Cretaceous period was the tropical marine precursor to the present Indo-West Pacific region. Thus, our study favors the hypotheses of “Region of origin” and “Tropical conservatism” to explain the origins of the longitudinal and latitudinal gradients of clupeoid species richness, respectively. Additional geological and paleontological evidence further define the tropical marine paleo-region of origin as the eastern Tethys Sea region. The Cretaceous fossil record of the Clupeoidei is partially incongruent with the results here as it contains taxa found outside this region. We discuss three possible causes of conflict between our biogeographical hypothesis and the distributions of the Cretaceous clupeoid fossils: regional extinction, incomplete taxonomic sampling and incorrect timescale estimation.

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Section: Discussionmentioning

confidence: 95%

Mitogenomic Evidence for an Indo-West Pacific Origin of the Clupeoidei (Teleostei: Clupeiformes)

et al. 2013

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“…The examination of the neurocranium-with the presence of a recessus lateralis-and the supporting skeleton of the caudal fin unambiguously supports the placement of this taxon within the order Clupeiformes (T. Yoshino, personal observation). Superficially, this fish resembles Sundasalanx, another paedomorphic clupeiform taxon endemic to South-East Asia that comprises seven morphologically closely related freshwater species (Siebert 1997;Ishiguro et al 2005), sharing several characteristics caused by the extreme developmental truncation of their larvae-like condition, such as body scaleless, early maturation (\20 mm SL), lack of pigmentation, incomplete ossification, as well as similar counts of dorsal and anal fin rays and vertebrae. A closer examination shows important differences in external and internal morphology between both taxa, e.g., presence of pectoral bony rays (versus absence in Sundasalanx), presence of W-shaped pelvic scute (versus absence in Sundasalanx), indicating that this undescribed clupeiform taxon is probably only distantly related to Sundasalanx (T. Yoshino, personal observation).…”

Section: Introductionmentioning

confidence: 96%

“…March 2007; http://mitofish.ori.u-tokyo.ac.jp/), covering a large part of higher-level teleostean diversity. Large-scale taxonomic analyses of mt datasets have provided a new perspective on the phylogeny of the Teleostei by resolving controversial issues and challenging some traditional relationships (Inoue et al , 2004Ishiguro et al 2003;Miya et al 2003;Yamanoue et al 2004;Ishiguro et al 2005;Lavoué et al 2005;Miya et al 2005). In particular, our recent study on the Clupeiformes (Lavoué et al 2007) provides an useful framework for examining the phylogenetic position of this undescribed paedomorphic taxon.…”

Section: Introductionmentioning

confidence: 99%

The phylogenetic position of an undescribed paedomorphic clupeiform taxon: mitogenomic evidence

et al. 2008

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Molecular characters may offer a useful alternative to confidently estimate the phylogenetic position of paedomorphic taxa otherwise difficult to place based on morphology because of the reduction or absence of characters in their larvae-like adult stage. Here, we sequenced the complete mitogenome of a remarkable undescribed marine paedomorphic clupeiform fish to gain insight into its phylogenetic position. Of a length of 17,507 bp, this mitogenome exhibits a unique gene order within the Teleostei because of the inversion of the contiguous tRNA Gln and tRNA Ile within the IQM region and the presence of a putative second control region inserted between these tRNAs. Mitogenomic data from 27 clupeiform species and 22 nonclupeiform species were subjected to partitioned maximum likelihood and Bayesian analyses. All resultant phylogenetic trees strongly supported the placement of this undescribed taxon within the order Clupeiformes, suborder Clupeoidei, and the family Clupeidae, as the sister group of the tribe Spratelloidini (Jenkinsia + Spratelloides) of the subfamily Dussumieriinae. Together, they form a monophyletic group with Chirocentrus and, possibly, Etrumeus. Despite its overall resemblance to Sundasalanx, this undescribed taxa (Clupeidae gen. et sp. indet.) is not closely related to that genus and represents an independent paedomorphic lineage within the Clupeoidei.

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“…Also, phylogenetic studies using the mitochondrial DNA genome sequences proposed a close relationship between Plecoglossus (as Osmeridae) and Salangidae (icefishes) in the Osmeroidei clade (Ishiguro et al 2003(Ishiguro et al , 2005. However, the origin and divergence time of Plecoglossus within the osmerids have not been examined.…”

Section: Discussionmentioning

confidence: 99%

Discovery of fossil Ayu (Plecoglossus altivelis) from the Upper Miocene of Shimane Prefecture, Japan

Kodera

Tomoda²

2011

Ichthyol Res

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The Ayu, Plecoglossus altivelis, comprising three subspecies, is the only species in the genus Plecoglossus in the family Osmeridae. Here, we describe for the first time the discovery of fossil specimens of P. altivelis from the Upper Miocene sediment of Matsue, Shimane Prefecture, Japan. The fossil individuals are subadult and have comb teeth in the second and third generations. These fossil specimens are clearly similar to the recent P. altivelis, the former's meristic characters being included in the three recent subspecies. In terms of numbers of pectoral fin rays and vertebrae, the fossil specimens are more similar to the subspecies Plecoglossus altivelis ryukyuensis than the other subspecies, but they also show different dorsal fin shapes and anal fin ray counts. This discovery of fossil P. altivelis indicates the persistence of the species for at least 10 million years, from the Late Miocene to the present.

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Sundasalanx(Sundasalangidae) is a progenetic clupeiform, not a closely‐related group of salangids (Osmeriformes): mitogenomic evidence

Cited by 26 publications

References 34 publications

Mitogenomic Evidence for an Indo-West Pacific Origin of the Clupeoidei (Teleostei: Clupeiformes)

Mitogenomic Evidence for an Indo-West Pacific Origin of the Clupeoidei (Teleostei: Clupeiformes)

The phylogenetic position of an undescribed paedomorphic clupeiform taxon: mitogenomic evidence

Discovery of fossil Ayu (Plecoglossus altivelis) from the Upper Miocene of Shimane Prefecture, Japan

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