Morphological comparison of early stages of two Japanese species of eight-barbel loaches: Lefua echigonia and Lefua sp. (Nemacheilidae)

Aoyama, Shigeru; Doi, Takehiko

doi:10.25225/fozo.v60.i4.a14.2011

Cited by 6 publications

(6 citation statements)

References 7 publications

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“… * L. costata and L. echigonia in newly hatched larvae : total length; L. echigonia and L. torrentis : body length. 1) Present study, 2) Aoyama & Doi (2011) with CC-BY. …”

Section: Discussionmentioning

confidence: 87%

“… * Total length of L. echigonia 1) Present study 2) Uchida (1939) 3) Aoyama & Doi (2011) TL. total length; BL, body length.…”

Section: Discussionmentioning

confidence: 94%

“…https://doi.org/10.12717/DR.2020.24.4.307 Aoyama & Doi (2011) suggested the external morphological differences between the two species because L. echigonia's eye size is larger than the length from mouth to nostrils, and L. torrentis has an eye size smaller than the length from mouth to nostrils. L. costata's eye size (0.003-0.005 mm) is similar to the length from mouth to nostrils (0.003-0.005 mm), showing a difference from L. echigonia, and L. torrentis.…”

Section: Discussionmentioning

confidence: 99%

“…Genus Lefua fish living in Japan are 5 species including L. costata , L. nikkonis, L. echigonia, L. torrentis, and L. tokaiensis ( Hosoya, 2019 ). In case of L. torrentis, previous research by Aoyama & Doi (2011) distinguished the morphological differences of the head and the distribution location of melanocyte appearing in the early life period. In addition, it was found that L .…”

Section: Introductionmentioning

confidence: 97%

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Early Life History of Lefua costata (Cypriniformes : Balitoridae) from Korea

Park¹,

Cho²,

Han

2020

Dev. Reprod.

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The purpose of this study is to observe the early life history of Korean Lefua costata and use the result as basic taxonomic research data for balitorid fish. The fertilized eggs were light green color with completely circle shape and mean size was 1.21±0.06 mm (n=30). Immediately after hatching, the size of the larvae was 2.81±0.11 mm (n=5) in mean length, with egg yolk. On the 3rd day after hatching, the preflexion larvae had a mean length of 4.64±0.09 mm (n=5), and their mouth was opened to start feeding. On the 8th day after hatching, a mean length of the postflexion larvae was 9.43±0.46 mm (n=5), the distal part of the notochord was bent to 45°, and 16 fin rays were developed on the caudal fin. On the 31st day after hatching, a mean length of juveniles was 22.3±0.85 mm (n=5), and the number of fin rays was the same as that of adult fish with (iv8) dorsal fins and (iii8) anal fins.

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“… * L. costata and L. echigonia in newly hatched larvae : total length; L. echigonia and L. torrentis : body length. 1) Present study, 2) Aoyama & Doi (2011) with CC-BY. …”

Section: Discussionmentioning

confidence: 87%

“… * Total length of L. echigonia 1) Present study 2) Uchida (1939) 3) Aoyama & Doi (2011) TL. total length; BL, body length.…”

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Early Life History of Lefua costata (Cypriniformes : Balitoridae) from Korea

Park¹,

Cho²,

Han

2020

Dev. Reprod.

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“…2. Some studies showed embryological differences in Lefua loaches [9] [10] [11] [12]. However, we cannot perform comparative embryology among the above six species and among intraspecific populations of each species, because those studies have been done using only limited samples of two species, Lefua sp.…”

Section: In the Red List Issued By The Japanese Ministry Of The Envirmentioning

confidence: 99%

Intraspecific Relationships and Variation of Two Lefua Species (Balitoridae, Cypriniformes) in the Tokai Region, Honshu, Japan

Miyazaki¹,

Hida²,

Ozaki³

et al. 2017

JWARP

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Two species Lefua echigonia and Lefua sp. 2 of the eight-barbel loach inhabit the Tokai region of Honshu, Japan. We determined sequences of the mitochondrial D-loop region to elucidate intraspecific phylogenetic relationships and variation in these two species. Lefua sp. 2 represented high intraspecific genetic similarity and complicated haplotype network, but three assemblages were recognized, including specimens mainly from Yahagi, Toyo, and Tenryu River systems, respectively, and named Groups 1 to 3. Divergence of Group 1 from the others was marginally supported, but Group 2 was paraphyletic to Group 3, suggesting the existence of two populations, i.e. Yahagi River population and Toyo-Tenryu River population. Lefua echigonia also represented high intraspecific genetic similarity, and two assemblages with slight genetic differentiation were discernible, including specimens from Shizuoka and southeastern Aichi prefectures and those from northwestern Aichi, Gifu, and Mie prefectures, respectively, and named Groups A and B. Star-like relationships of haplotypes suggested the dispersal origin located in eastern Aichi prefecture. The two species are threatened to extinction and thus we proposed evolutionary significant units for conservation.

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Ten-year ecological investigation into eight-barbel loach, Lefua tokaiensis (Nemacheilidae, Cypriniformes)

Miyazaki,

Ogata,

Takano

et al. 2024

Limnology

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Morphological comparison of early stages of two Japanese species of eight-barbel loaches: Lefua echigonia and Lefua sp. (Nemacheilidae)

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 6 publications

References 7 publications

Early Life History of Lefua costata (Cypriniformes : Balitoridae) from Korea

Early Life History of Lefua costata (Cypriniformes : Balitoridae) from Korea

Intraspecific Relationships and Variation of Two <i>Lefua</i> Species (Balitoridae, Cypriniformes) in the Tokai Region, Honshu, Japan

Ten-year ecological investigation into eight-barbel loach, Lefua tokaiensis (Nemacheilidae, Cypriniformes)

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Morphological comparison of early stages of two Japanese species of eight-barbel loaches: Lefua echigonia and Lefua sp. (Nemacheilidae)

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 6 publications

References 7 publications

Early Life History of Lefua costata (Cypriniformes : Balitoridae) from Korea

Early Life History of Lefua costata (Cypriniformes : Balitoridae) from Korea

Intraspecific Relationships and Variation of Two &lt;i&gt;Lefua&lt;/i&gt; Species (Balitoridae, Cypriniformes) in the Tokai Region, Honshu, Japan

Ten-year ecological investigation into eight-barbel loach, Lefua tokaiensis (Nemacheilidae, Cypriniformes)

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Intraspecific Relationships and Variation of Two <i>Lefua</i> Species (Balitoridae, Cypriniformes) in the Tokai Region, Honshu, Japan