On the current state of taxonomy of the Baikal Lake amphipods (Crustacea, Amphipoda) and the typological ways of constructing their system

Тахтеев, В. В.

doi:10.15298/arthsel.28.3.03

Cited by 23 publications

(18 citation statements)

References 19 publications

(58 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As an example, we emphasize the similarity among the Ponto-Caspian genus Dikerogammarus and the widespread littoral genus Elasmopus Costa, 1853 (Fig. 7d).The Baikalian analogues of this ecomorph could be envisioned in Eulimnogammarus and Corophiomorphus (Naumenko et al 2017;Takhteev 2019). Body armature is extremely diverse in amphipods, with similar phenotypes having evolved independently multiple times (Copilaş-Ciocianu, Borko, et al 2020;Lowry and Myers 2017;Naumenko et al 2017).…”

Section: Morphological Evolutionmentioning

confidence: 78%

“…Both exhibit typical features for substrate boring such as a large head with protruding mandibles adapted to cutting into tough material, and extremely short antennae and pereopods due to living in narrow self-constructed tunnels (Mejaes et al 2015). Within the Baikal Lake Acanthogammaride radiation, the symbiotic ecomorph is probably represented by the parasitic genus Pachyschesis (Naumenko et al 2017;Takhteev 2019). The fossorial ecomorph seems to be the most common among Ponto-Caspian amphipods.…”

Section: Morphological Evolutionmentioning

confidence: 99%

“…7b). Additionally, in Lake Baikal this ecomorph is possibly represented by the Micruropodidae radiation, comprising fossorial species living on fine substrate (Naumenko et al 2017;Takhteev 2019). The clinger ecomorph characterizes species with elaborate body armature/ornamentation and preference for living (plant) substrate.…”

Section: Morphological Evolutionmentioning

confidence: 99%

See 2 more Smart Citations

Taxonomic, ecological and morphological diversity of Ponto-Caspian gammaridean amphipods: a review

Copilaş‐Ciocianu

Sídorov

2021

Preprint

View full text Add to dashboard Cite

Thanks to its dynamic geological history the Ponto-Caspian region harbors a unique and unusually adaptable fauna, notorious for its invasive species. Gammarid amphipods attained considerable diversity, becoming the world’s second most speciose ancient-lake amphipod radiation. Nonetheless, apart from a few invasive species, this group remains poorly studied. Herein, we review and quantify the taxonomic, morphological and ecological diversity, as well as phylogenetic context of Ponto-Caspian gammarids within the adaptive radiation framework. Published molecular phylogenies indicate that this radiation has a monophyletic mid-Miocene Paratethyan origin, and is nested within the morphologically-conserved Atlanto-Mediterranean genus Echinogammarus. We find extensive disparity in body shape, size, ornamentation and appendage length, along a broad ecological gradient from mountain springs to depths exceeding 500 m, on virtually all substrate types (including symbiosis). We propose four putative ecomorphs that appear convergent with distantly related oceanic and Baikal Lake taxa. Thus, the identified patterns support the adaptive radiation model, although extensive further research is needed. A checklist and provisional key to all known endemic species are provided to facilitate taxonomic research. Ponto-Caspian gammarids could be a potentially powerful model for studying adaptive radiations and invasive species evolution.

show abstract

Section: Morphological Evolutionmentioning

confidence: 78%

Section: Morphological Evolutionmentioning

confidence: 99%

See 1 more Smart Citation

Taxonomic, ecological and morphological diversity of Ponto-Caspian gammaridean amphipods: a review

Copilaş‐Ciocianu

Sídorov

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Manuscript to be reviewed Lake Baikal is home to over 350 endemic species and subspecies of gammaridean amphipods (Crustacea: Malacostraca: Amphipoda), which constitutes about half of the diversity of the amphipod fauna of surface freshwaters (Takhteev, 2019). These species differ significantly by preferred habitats and appearance.…”

Section: Introductionmentioning

confidence: 99%

Peer Review #1 of "The level of putative carotenoid-binding proteins determines the body color in two species of endemic Lake Baikal amphipods (v0.1)"

Knigge¹

2020

View full text Add to dashboard Cite

Color is an essential clue for intra-and interspecies communication, playing a role in selection and speciation. Coloration can be based on nanostructures and pigments; carotenoids and carotenoproteins are among the most widespread pigments in animals. Over 350 species and subspecies of amphipods (Crustacea: Amphipoda) endemic to Lake Baikal exhibit an impressive variability of colors and coloration patterns, including intraspecific color morphs. However, the mechanisms forming this diversity are underexplored, as while the carotenoid composition of several transparent, green, and red species was investigated, there have been no reports on the corresponding carotenoidbinding proteins. In this work, we analyze the coloration of two brightly colored Baikal amphipods characterized by intraspecific color variability, Eulimnogammarus cyaneus and E.vittatus. We showed that the color of either species is defined by the level of putative carotenoid-binding proteins similar to the pheromone/odorant-binding protein family, as the concentration of these putative crustacyanin analogs was higher in blue or teal-colored animals than in the orange-or yellow-colored ones. At the same time, the color did not depend on the total carotenoid content, as it was similar between animals of contrasting color morphs. By exploring the diversity of these sequences within a larger phylogeny of invertebrate crustacyanins, we show that amphipods lack orthologs of the well-studied crustacyanins A and C, even though they possess some crustacyanin-like sequences. The analysis of expression levels in E. cyaneus showed that the transcripts encoding crustacyanin analogs had much higher expression than the crustacyanin-like sequences, suggesting that the former indeed contribute to the color of these brightly colored animals. The crustacyanin analogs seem to act in a similar way to the well-studied crustacyanins in body color formation, but the details of their action are still to be revealed.

show abstract

“…Among them, there are several prominent species flocks including sculpins and amphipods (Cristescu et al, 2010). Baikal sculpins (Pisces: Cottidae) include 33 species (Goto et al, 2015), while Baikal amphipods (Crustacea: Malacostraca: Amphipoda: Gammaridae) include over 350 species and subspecies (Takhteev, 2019), and both taxa have representatives inhabiting all depths of the lake. The visual system of sculpins is wellstudied, and it is known that the maximum sensitivity of short wavelength-sensitive visual pigments shifts towards shorter wavelengths with increasing habitat depth (Bowmaker et al, 1994;Cowing et al, 2002).…”

mentioning

confidence: 99%

Spectral sensitivity of the visual system of endemic Baikal amphipods

Drozdova

Saranchina

Timofeyev

2020

LFWB

View full text Add to dashboard Cite

show abstract

On the current state of taxonomy of the Baikal Lake amphipods (Crustacea, Amphipoda) and the typological ways of constructing their system

Cited by 23 publications

References 19 publications

Taxonomic, ecological and morphological diversity of Ponto-Caspian gammaridean amphipods: a review

Taxonomic, ecological and morphological diversity of Ponto-Caspian gammaridean amphipods: a review

Peer Review #1 of "The level of putative carotenoid-binding proteins determines the body color in two species of endemic Lake Baikal amphipods (v0.1)"

Spectral sensitivity of the visual system of endemic Baikal amphipods

Contact Info

Product

Resources

About