Embryonic Development of the Pacific Lamprey, Entosphenus tridentatus

Yamazaki, Y.; Fukutomi, Norio; Takeda, Kazuya; Iwata, Akihisa

doi:10.2108/zsj.20.1095

Cited by 18 publications

(13 citation statements)

References 4 publications

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“…This study examining the early development of L. japonica generally appears to demonstrate a similar developmental pattern to that reported for other lamprey species, such as the pacific lamprey ( E. tridentatus ) (Yamazaki et al, ), sea lamprey ( P. marinus ) (Piavis, ) and brook lamprey ( L. reissneri ) (Tahara, ), which were characterized by similar morphological and physiological features. Additionally, the embryonic development of L. japonica proceeds at a rate that is fairly similar to those reported for other lamprey species (Piavis, ; Tahara, ; Yamazaki et al, ). The inconsistency in embryonic development, including developmental rate, lengths of the stages and the overlap between stages, results from the effect of different water temperatures and species (Langille & Hall, ; Piavis, ).…”

Section: Discussionsupporting

confidence: 80%

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Early development of LampreyLampetra japonica(Martens, 1868)

Han

et al. 2019

Aquac Res

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Studies of lamprey early development have produced major insights into primitive developmental patterns and the evolution of vertebrates. In this study, the effectiveness of the morphological and histological characteristics of Lampetra japonica during embryological, yolk‐sac larval and ammocoete stages were examined. Based on the external and histological morphology, the embryological phase was divided into eight stages, including the zygote, cleavage, blastula, gastrula, neural plate and groove, head protrusion, prehatching and hatching stages. A set of key morphological and histological transformations occurred through the yolk‐sac larval stage, reflecting the larva‐ammocoete transition. In the ammocoete stage, all organ systems were differentiated. Except for the melanophores, the lamprey did not develop any further morphological complexity beyond the ammocoete stage. The total length and body weight of larva and ammocoete generally increased over time. We hope that this study might form the basis for future studies of the phylogenetic development of this interesting group of animals.

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Section: Discussionsupporting

confidence: 80%

“…There are some relationships between the development of adult lamprey and the effective accumulated temperature. The optimum temperature for spawning in L. japonica is the same as that of P. marinus (Piavis, ) and E. tridentatus (Yamazaki et al, ), which are diadromous and parasitic on fish.…”

Section: Discussionmentioning

confidence: 99%

Early development of LampreyLampetra japonica(Martens, 1868)

Han

et al. 2019

Aquac Res

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“…All lamprey fossils have skin without a dermal skeleton, a trait likely to have arisen in stem gnathostomes (Gess et al, 2006; Janvier, 2006; Tahara, 1988). These lamprey fossils date to 360 Mya, while the minimum age of hagfish is about 300 Mya (Janvier, 2007; Yamazaki et al, 2003). Assuming monophyletic cyclostomes, based on the ages of stem gnathostome fossils, it is likely that cyclostomes and gnathostomes split no less than 475–500 Mya (Janvier, 2007; Tahara, 1988).…”

Section: Introduction1mentioning

confidence: 99%

“…Early embryology of lampreys has been described in several species, including the European brook lamprey Lampetra fluviatilis (Damas, 1944; Horigome et al, 1999), the Atlantic sea lamprey P. marinus (Horigome et al, 1999; Piavis, 1971; Richardson and Wright, 2003), Lampetra reissneri (Horigome et al, 1999; McCauley and Bronner-Fraser, 2003; Tahara, 1988), and the Pacific lamprey Entosphenus tridentatus (McCauley and Bronner-Fraser, 2003; Yamazaki et al, 2003). Generally, embryology of these lamprey species is quite similar, varying only in developmental rate.…”

Section: Introduction1mentioning

confidence: 99%

The lamprey: A jawless vertebrate model system for examining origin of the neural crest and other vertebrate traits

Green

Bronner‐Fraser

2014

Differentiation

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Summary Lampreys are a group of jawless fishes that serve as an important point of comparison for studies of vertebrate evolution. Lampreys and hagfishes are agnathan fishes, the cyclostomes, which sit at a crucial phylogenetic position as the only living sister group of the jawed vertebrates. Comparisons between cyclostomes and jawed vertebrates can help identify shared derived (i.e. synapomorphic) traits that might have been inherited from ancestral early vertebrates, if unlikely to have arisen convergently by chance. One example of a uniquely vertebrate trait is the neural crest, an embryonic tissue that produces many cell types crucial to vertebrate features, such as the craniofacial skeleton, pigmentation of the skin, and much of the peripheral nervous system (Gans and Northcutt, 1983). Invertebrate chordates arguably lack unambiguous neural crest homologs, yet have cells with some similarities, making comparisons with lampreys and jawed vertebrates essential for inferring characteristics of development in early vertebrates, and how they may have evolved from nonvertebrate chordates. Here we review recent research on cyclostome neural crest development, including research on lamprey gene regulatory networks and differentiated neural crest fates.

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“…Recently, the occurrence of mature adult individuals and natural spawning of the species were found from the Naka River, eastern Honshu Island, Japan (Fukutomi et al, 2002). Using eggs and sperms from these individuals, Yamazaki et al (2003b) elucidated the early developmental pattern under artificial conditions. However, the status of populations (resident or short-term exploratory) has been unknown, being treated as "data deficient" in the Red Data Book of Japan (Japan Ministry of the Environment, 2003).…”

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confidence: 99%

Occurrence of larval Pacific lamprey Entosphenus tridentatus from Japan, detected by random amplified polymorphic DNA (RAPD) analysis

et al. 2005

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Species identifications of the Pacific lamprey Entosphenus tridentatus from four other Japanese lampreys, Lethenteron japonicum, L. kessleri, and two undescribed Lethenteron species (L. sp. N and L. sp. S), were carried out on the basis of random amplified polymorphic DNA (RAPD) using the polymerase chain reaction (PCR) method. Of 65 RAPD loci, seven loci possessing species-specific fragments were obtained for E. tridentatus. Based on these RAPD loci, four larval individuals of E. tridentatus from the Naka River (eastern Honshu Island, Japan) were recognized in 2001 and 2002. The existence of larval individuals of E. tridentatus, as well as spawning adults previously reported from the same river, indicated the possibility of residence in that species.

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Embryonic Development of the Pacific Lamprey, Entosphenus tridentatus

Cited by 18 publications

References 4 publications

Early development of LampreyLampetra japonica(Martens, 1868)

Early development of LampreyLampetra japonica(Martens, 1868)

The lamprey: A jawless vertebrate model system for examining origin of the neural crest and other vertebrate traits

Occurrence of larval Pacific lamprey Entosphenus tridentatus from Japan, detected by random amplified polymorphic DNA (RAPD) analysis

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