A New Family Caprogammaridae (Amphipoda, Gammaridea) Found in the North-West Pacific

Kudrjaschov, V.A.; Vassilenko, S. V.

doi:10.1163/156854066x00711

Cited by 13 publications

(15 citation statements)

References 1 publication

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“…When the Caprogammaridae were first described by (Kudrjaschov and Vassilenko 1966), they were regarded as a member of the Gammaridea based on several gammarid-like morphological features, such as separation of the head from the thoracic segment bearing the first pereopod (these are partially coalesced in the Caprellidea), presence of a coxal plate (reduced in the Caprellidea), and a five-segmented pleon with pleopods. However, Takeuchi and Ishimaru (1991) noted that some caprellids also possess small coxal plates.…”

Section: Phylogenetic Position Of the Caprogammaridae Phtisicidae Anmentioning

confidence: 99%

“…A family of Caprellidea, Caprogammaridae, possesses an elongated and segmented pleon with pleopods (appendages in pleon) (Fig. 2a, b), although the third and fourth pereopods are rudimentary as in other caprellids (Kudrjaschov and Vassilenko 1966;Takeuchi and Ishimaru 1991). Although three pairs of pleopods are biramous as those of gammarids (Kudrjaschov and Vassilenko 1966;Takeuchi and Ishimaru 1991), the functional significance of the abdomen and appendages of Caprogammaridae has been largely unknown.…”

Section: Introductionmentioning

confidence: 99%

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Complicated evolution of the caprellid (Crustacea: Malacostraca: Peracarida: Amphipoda) body plan, reacquisition or multiple losses of the thoracic limbs and pleons

et al. 2011

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The Caprellidea (Crustacea) have undergone an interesting morphological evolution from their ancestral gammarid-like form. Although most caprellid families have markedly reduced third and fourth pereopods (the walking thoracic limbs) and pleons (the posterior body parts), one family, Caprogammaridae, has developed pleon with swimming appendages (pleopods), whereas another family, Phtisicidae, possesses well-developed functional third and fourth pereopods. The unique character status of these families implies that there has been reacquisition or multiple losses of both pereopods and the pleon within the Caprellidea lineages. Although the Caprellidea are fascinating animals for the study of morphological evolution, the phylogenetic relationships among the Caprellidea are poorly understood. One obstacle to studying the evolution of the Caprellidea is the difficulty collecting samples of caprogammarid species. In this study, we obtained live samples of a Caprogammaridae species, and confirmed that its pleon and pleopods could perform similar locomotive functions and swimming movements as observed in gammarids. From the phylogenetic analyses on 18S ribosomal RNA gene sequences, we identified three distinct clades of Caprellidea.Ancestral state reconstruction based on the obtained phylogeny suggested that once lost, the third and fourth pereopods were regained in the Phtisicidae, while the pleon was regained in the Caprogammaridae, while we could not exclude the possibility of independent losses. In either case, the caprellid lineage underwent a quite complicated morphological evolution, and possibly the Caprellidea may be an exception to Dollo's law.

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Section: Phylogenetic Position Of the Caprogammaridae Phtisicidae Anmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Complicated evolution of the caprellid (Crustacea: Malacostraca: Peracarida: Amphipoda) body plan, reacquisition or multiple losses of the thoracic limbs and pleons

et al. 2011

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“…CeranieVivas and Gray (1966) The distribution of Paracaprella tenuis is interesting since it shows the disjunct distribution pattern which Hedgpeth (1953) Hedgpeth (1953) Mayer (1903, p. In view of these semipelagic habitats, it is not too remarkable that these organisms are spread over very large areas. Recently, Kudrjaschov and Vassilenko (1966) Stebbing (1906) Kudrjaschov and Vassilenko, 1966).…”

Section: Zoogeographymentioning

confidence: 99%

The Capreillidae (Crustacea: Amphipoda) of the Western North Atlantic

McCain¹

1968

Bulletin of the United States National Museum

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“…The Caprogammaridae contains only one genus, Caprogammarus Kudrjaschov & Vassilenko, 1966. Kudrjaschov & Vassilenko's (1966 placement of this family under the suborder Gammaridea has not been widely accepted.…”

Section: Introductionmentioning

confidence: 99%

“…Only two species of Caprogammarus are known, namely, C. gurjanovae Vassilenko, 1966 andC. micropleopodus Vassilenko, 1977.…”

Section: Introductionmentioning

confidence: 99%

Redescription of Caprogammarus gurjanovae Kudrjaschov & Vassilenko, 1966 (Crustacea: Amphipoda) from Hokkaido, Japan, with notes on the taxonomic status of Caprogammarus

Takeuchi

Ishimaru²

1991

Hydrobiologia

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Caprogammarus gurjanovae Kudrjaschov & Vassilenko, 1966 (Amphipoda: Caprellidea: Caprogammaridae) was redescribed based on the materials newly collected off Kushiro and Akkeshi, Hokkaido, Japan, which represents the southernmost record of this genus. Caprogammarus and Caprella share an identical feature, that of having the head and pereonite I 'partially fused'. Thus, Caprogammarus is considered to be a member of the suborder Caprellidea.

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A New Family Caprogammaridae (Amphipoda, Gammaridea) Found in the North-West Pacific

Cited by 13 publications

References 1 publication

Complicated evolution of the caprellid (Crustacea: Malacostraca: Peracarida: Amphipoda) body plan, reacquisition or multiple losses of the thoracic limbs and pleons

Complicated evolution of the caprellid (Crustacea: Malacostraca: Peracarida: Amphipoda) body plan, reacquisition or multiple losses of the thoracic limbs and pleons

The Capreillidae (Crustacea: Amphipoda) of the Western North Atlantic

Redescription of Caprogammarus gurjanovae Kudrjaschov & Vassilenko, 1966 (Crustacea: Amphipoda) from Hokkaido, Japan, with notes on the taxonomic status of Caprogammarus

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