A brief survey of the ecology and biology of the Caspian Polyphemoidea

Mordukhai-Boltovskoi, Ph. D.; Rivier, I. K.

doi:10.1007/bf00350931

Cited by 21 publications

(8 citation statements)

References 8 publications

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“…The Caspian Sea is exceptional in having several endemic planktonic onychopod branchiopods (Mordukhai-Boltovskoi & Rivier 1971). This situation is proba.bly related to the complex history of the Ponto-Caspian region which involved periods of both connection and isolation of its component basins, and wide fluctuations in lake levels, but details of the story are yet to be worked out.…”

Section: Mutualistic Associationsmentioning

confidence: 99%

Endemism, speciation and adaptive radiation in great lakes

Fryer

1996

Environ Biol Fish

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SynopsisEvolution in great lakes has often been both quantitative (many endemic species of distantly related taxa often being present) and qualitative (outstanding levels of adaptive radiation having sometimes been achieved). These situations pose many questions, such as why there are so many endemics and so many superspecialists (and at the same time often many sibling species), as well as presenting problems relating to such matters as convergent evolution in different lakes, the possible role of key innovations, the nature of isolating mechanisms, competition and co-existence in complex communities, the roles of diverse mutualistic associations, and many others. These rich faunas also provide particularly favourable opportunities for studying patterns of speciation, while attempts to elucidate phylogenies in groups such as African cichlid fishes, that have radiated .in several lakes, can be pursued on both a broad scale and at the intralacustrine level using both recently devemped techniques and time-honoured methods. Rates of evolution, which differ widely between ecologically equivalent taxa in different lakes, have sometimes been extremely rapid, as attested by both molecular data and evidence from field studies. Notwithstanding their evolutionary exuberance, these rich faunas are fragile as demonstrated dramatically by the appalling tragedy that has befallen the haplochromine cichlid flock elf Lake Victoria.

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Section: Mutualistic Associationsmentioning

confidence: 99%

Endemism, speciation and adaptive radiation in great lakes

Fryer

1996

Environ Biol Fish

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“…It was noted that C. pengoi is antagonist with Bythotrephes spp. in their native habitats and, depending on the environmental conditions, either one or the other take advantage (Mordukhai-Boltovskoi and Rivier, 1971). A statistical analysis of our data showed that the biomass of Bythotrephes spp.…”

Section: Effects Of Zooplankton Predators On the Biomass Of Cercopagimentioning

confidence: 82%

“…In its natural habitat in the Northern Caspian Sea, C. pengoi prefers coastal water areas and bays, where the depth does not exceed 75 m and the salinity reaches 10 PSU; it is tolerant to temperature and disappears from plankton only when the water temperature drops below 10 • C (Mordukhai- Boltovskoi and Rivier, 1971). In the Southern Caspian Sea, this species lived in areas with surface salinity up to 12 PSU (Bagheri et al, 2014).…”

Section: Correlation Of the Biomass Of Cercopagis Pengoi With Abioticmentioning

confidence: 99%

“…In the Southern Caspian Sea, this species lived in areas with surface salinity up to 12 PSU (Bagheri et al, 2014). In terms of salinity, C. pengoi is highly tolerant and can live in wide range of salinity from completely fresh to brackish water (Mordukhai-Boltovskoi and Rivier, 1971). A consensus of the data from the present study ( Supplementary Table 1) and the literature indicates that Cercopagis is most often found at salinities of 0.3-6 PSU and temperatures of 4-24 • C in the Baltic (Krylov et al, 1999;Ojaveer et al, 2004;Litvinchuk and Telesh, 2006;Bielecka et al, 2014;Rowe et al, 2016;Helenius et al, 2017;Naumenko, 2018).…”

Section: Correlation Of the Biomass Of Cercopagis Pengoi With Abioticmentioning

confidence: 99%

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Effects of Environmental Gradients on the Biomass of Alien Cercopagis pengoi in the Neva Estuary

2020

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Biological invasions are a global trend due to globalization of the world. An important goal of invasion biology is to identify environmental characteristics that may make a region receptive to invasions. We tested the hypothesis that environmental variables have stronger effect on the biomass of the alien Cercopagis pengoi in the Neva Estuary than biotic interactions with other zooplankton species. Hierarchical cluster, principal component and Pearson correlation analyzes were used to elucidate changes within the zooplankton community along environmental gradients. The data analysis showed that the biomass of C. pengoi was higher in waters with higher salinity, low temperature, high transparency, lower chlorophyll a concentration and lower proportion of chlorophyll in particulate suspended matter. The biomass of C. pengoi showed significant positive correlations with biomasses of its potential preys. However, we did not find direct significant negative correlations between C. pengoi and larger zooplankton predators Leptodora kindtii and Bythotrephes spp. This research generally supports the hypothesis that if environmental variables are appropriate for an exotic species, then that species is likely to invade successfully, regardless of the native species already present.

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“…Comparative analyses of the data and those available in the scientific literature (Mordukhai-Boltovskoi, 1962a, b, 1965a, b, 1966, 1967a, b, 1968a, b, 1974Mordukhai-Boltovskoi & Rivier, 1970, 1971Rivier, 1966aRivier, , b, 1968Rivier, , 1969Rivier & Mordukhai-Boltovskoi, 1966) make it possible to understand the salinity and temperature tolerances of the Podonidae from the Caspian and Aral Seas .…”

Section: Discussionmentioning

confidence: 99%

The conservation ecology of the Podonidae from the Caspian and Aral seas

Аладин

1995

Hydrobiologia

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A brief survey of the ecology and biology of the Caspian Polyphemoidea

Cited by 21 publications

References 8 publications

Endemism, speciation and adaptive radiation in great lakes

Endemism, speciation and adaptive radiation in great lakes

Effects of Environmental Gradients on the Biomass of Alien Cercopagis pengoi in the Neva Estuary

The conservation ecology of the Podonidae from the Caspian and Aral seas

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