Importance of male and ephippial female characters for differentiating three Palaearctic species of Macrothrix Baird, 1843 (Cladocera: Anomopoda), with a redescription of Macrothrix dadayi Behning, 1941

Kotov, Alexey A.

doi:10.1051/limn:2008022

Cited by 12 publications

(5 citation statements)

References 11 publications

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“…Since M. hirsuticornis is one of the extremely few cladoceran species recorded from Svalbard (Husmann et al . 1978), and since it is known to have usually two‐egg ephippia (Kotov 2008), the few fossil two‐egg ephippia were identified to M. hirsuticornis .…”

Section: Resultsmentioning

confidence: 99%

Late quaternary ecological turnover in high arctic lake einstaken, nordaustlandet, svalbard (80° n)

Luoto

Nevalainen

Kubischta

et al. 2011

Geografiska Annaler: Series A, Physical Geography

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Multiproxy palaeolimnological analyses of a sediment core record from Lake Einstaken, Nordaustlandet, give insight into long-term ecological and environmental dynamics in the High Arctic Svalbard during the last c. 13 000 cal yr BP. Fossil remains of foraminifera, chironomidae, cladocera and diatoms (Bacillariophyta) revealed several distinct ecological turnovers during the late Quaternary. The foraminiferal assemblages in a marine interval in the lower part of the core indicated one distinct faunal turnover and two subsequent minor changes. The foraminiferal assemblages reflected high-arctic, shallow-water conditions in an area of changing salinity conditions. A development of gradually more restricted marine conditions, presumably related to a decrease in water depth during the isostatic uplift, was evident from the foraminiferal assemblages. The Holocene was characterized by a freshwater environment in the isolated Lake Einstaken. The cladoceran assemblages experienced two complete faunal turnovers in the early part of the lacustrine sediment sequence, most likely related to inlake processes. The chironomid assemblages went through five distinct Holocene faunal changes that were probably mostly related to climate development and changes in nutrient conditions. The freshwater diatoms revealed four distinct episodes of change in their assemblages that could be related to their sensitivity to pH and nutrient status. The most distinct common feature in the Holocene faunal and floral assemblages was the pioneer phase during the early Holocene. The recent environmental changes, which were most visibly reflected in the chironomid records, are possibly related to a coupled effect of elevated nutrient conditions and increased temperatures.

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Section: Resultsmentioning

confidence: 99%

Late quaternary ecological turnover in high arctic lake einstaken, nordaustlandet, svalbard (80° n)

Luoto

Nevalainen

Kubischta

et al. 2011

Geografiska Annaler: Series A, Physical Geography

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“…The specimens were examined under a Leica DM 5000 camera attached to a microscope fitted with an image analyzer, and then identified following Smirnov (1971Smirnov ( , 1996, Michael and Sharma (1988), Subhash Babu and Nayar (2004); Kotov et al (2012Kotov et al ( , 2013 and Pascual et al (2014). We used specialized papers to aid in the identification of species of Macrothrix (Dumont et al, 2002;Kotov, 2008), Kurzia (Hudec, 2000;Padhye and Van Damme, 2015), Celsinotum (Rajapaksa and Fernando, 1985), Chydorus (Rajapaksa and Fernando, 1986a;Smirnov, 1996;Van Damme and Dumont, 2007), Alona (Sinev, 1999;, Karualona (Dumont and Silva-Briano, 2000;Van Damme et al, 2013), Coronatella (Van Damme andSousa et al, 2015a), Notoalona (Rajapaksa and Fernando, 1987), Anthalona (Van Damme et al, 2011;Sinev and Kotov, 2012;Sousa et al, 2015b), Dadaya (Rajapaksa and Fernando, 1982a), Diaphanosoma (Korovchinsky, 1998, 2002, Pleuroxus (Hudec and Illyova, 1998;Chiambang and Dumont, 2004;Sinev and Sanoamuang, 2013), Simocephalus (Young et al, 2012), Bosmina (Taylor et al, 2002;Kotov et al, 2009), Bosminopsis (Rey and Vasquez, 1986;Kotov, 1999), and Ephemeroporus (Frey, 1982b;Smirnov, 1996). The specimens were deposited in the Laboratory of Fisheries and Aquatic Ecology of the Rajiv Gandhi University, Itanagar, India.…”

Section: Sampling Sorting Quantification and Identificationmentioning

confidence: 99%

Faunal diversity of Cladocera (Crustacea: Branchiopoda) with notes on biogeographically important species in the floodplain wetlands of the Subansiri river basin, India

Gogoi

Sousa

Das

2018

Ann. Limnol. - Int. J. Lim.

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The plankton samples collected from the Subansiri floodplain wetlands revealed a rich Cladocera assemblage of 55 species belonging to 30 genera and 7 families. The species richness represents 42% and 75% of the total amount of fresh water species reported from India and Assam, respectively. Chydoridae was the most speciose family, with 31 species, while Ilyocryptidae was represented by a single species. Sididae, Daphniidae, Bosminidae, Moinidae and Macrothricidae were represented by four, five, three, two and four species, respectively. The faunal composition is represented by cosmopolitan, tropical and oriental elements. The documentation of Diaphanosoma dubium, Latonopsis australis, Simocephalus mixtus, Chydorus sphaericus, Chydorus parvus, Chydorus ovalis, Alonella clathratula, Pleuroxus cf. denticulatus, Picripleuroxus quasidenticulatus, Celsinotum macronyx, Coronatella anodonta and Kurzia (Rostrukurzia) brevilabris has biogeographic importance. We provide brief geographical distributional remarks about these 12 species from the collected samples. This was a preliminary study, as the fauna from the Indian subcontinent is poorly documented, and requires a taxonomic revision as a whole. The faunistic diversity of cladocerans comprises a clear representation of a tropical cladoceran assemblage.

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“…However, in recent times, the male morphology has received increased attention because of its potential to allow accurate taxonomic identification when the parthenogenetic females of certain species are too similar in morphology (Sinev, 1999;2013;Kotov, 2008;Sinev and Shiel, 2012;Kotov and Fuentes-Reines, 2015). Although the recent literature points to the importance of male morphology in cladoceran systematics, many species still lack or require improvements in the descriptions of male morphology.…”

Section: Introductionmentioning

confidence: 99%

Description of the male of Coronatella paulinae (Crustacea, Branchiopoda, Chydoridae) with an identification key for the genus based on the male morphology

et al. 2016

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Importance of male and ephippial female characters for differentiating three Palaearctic species of Macrothrix Baird, 1843 (Cladocera: Anomopoda), with a redescription of Macrothrix dadayi Behning, 1941

Cited by 12 publications

References 11 publications

Late quaternary ecological turnover in high arctic lake einstaken, nordaustlandet, svalbard (80° n)

Late quaternary ecological turnover in high arctic lake einstaken, nordaustlandet, svalbard (80° n)

Faunal diversity of Cladocera (Crustacea: Branchiopoda) with notes on biogeographically important species in the floodplain wetlands of the Subansiri river basin, India

Description of the male of Coronatella paulinae (Crustacea, Branchiopoda, Chydoridae) with an identification key for the genus based on the male morphology

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