Some peculiar features of the hydrochemical regime and the fauna of mesohaline waters

Khlebovich, V. V.

doi:10.1007/bf00351637

Cited by 55 publications

(14 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tolerance of sichel to water salinity is similar to that demonstrated by spined loach, bream or carp, for which the water salinity of 5–6 ppt is the upper ecophysiological limit to the development of eggs (Chlebovic ; Klinkhardt & Winkler ). In view of the above, it seems likely that there are some specific regional adaptations among sichel populations to reproduction in water of higher salinity (9.7–10.6), such as for example in the Aral Sea (Goteeva & Markova ; Rass ) or else the sichel inhabiting that water body migrates to rivers during the spawning season.…”

Section: Discussionsupporting

confidence: 64%

Influence of water salinity on the survival of embryos and growth of the sichel larvaePelecus cultratus(L.) under controlled conditions

et al. 2016

View full text Add to dashboard Cite

The purpose of this study was to analyse the influence of water salinity on the incubation of eggs and growth of the larvae of sichel Pelecus cultratus (L.) under controlled conditions. The following water salinity was considered: 3, 6, 9, 12, 15 and 0 ppt for the control. The eggs incubation time depended on the water salinity, lasting from 56.3°D [9 ppt] to 107.7°D [0 ppt]. The higher water salinity, shorter the incubation time. The highest survivability of larvae was obtained in water of the salinity equal 3 ppt and in freshwater, where respectively 87% and 84% of the larvae survived. No hatched larvae were obtained in water of the salinity of 12 and 15 ppt, as all embryos died during the experiment. Larvae were reared up for 21 days. The final body weight, depending on the water salinity, reached from 43.5 mg [9 ppt] to 74.6 mg [3 ppt], at the respective body lengths of 19.3 mm and 23.2 mm. The highest body gains and lengths of larvae were observed in water of the salinity of 3 ppt. The lowest survivability of sichel larvae occurred in water of the salinity 9 ppt, where it was only 53.2%. The survivability of larvae in freshwater and water of the salinity of 3 ppt was quite similar: 96.2% and 95.6% respectively. Water salinity degree of 12 and 15 ppt appeared to be lethal for both embryos and larvae of the sichel.

show abstract

Section: Discussionsupporting

confidence: 64%

Influence of water salinity on the survival of embryos and growth of the sichel larvaePelecus cultratus(L.) under controlled conditions

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The Baltic was thought to be a species-poor water body because the average surface-water salinity in the Baltic Sea proper is 5 to 8 -a critical level at which sharp changes in the ionic composition of seawater diluted with freshwater occur (Khlebovich 1968). Khlebovich (1969) argued that these ionic changes constitute a physico-chemical barrier between marine and freshwater faunas, and Kinne (1971) coined the name 'horohalinicum' (from the Greek 'horos': limit, boundary line) for this specific salinity range.…”

Section: Introductionmentioning

confidence: 99%

“…Deaton & Greenberg (1986) stated that species abundance declined to a minimum between salinity 5 and 8 not only in estuaries, but in all bodies of brackish water. Those authors re-examined the hydrochemical data used by Khlebovich (1968) and found that, in fact, while the ionic composition of diluted seawater changed slightly between salinity 5 and 8, the changes in ionic ratios below salinity 2 were much larger; thus it was concluded that the proposed physico-chemical barrier did not exist only between salinity 5 and 8. The latter finding fits well with the idea of plurality of barrier salinity zones and the existence of the specific 'δ-horohalinicum' at salinity 0.5 to 2.0 (Aladin 1988).…”

Section: Introductionmentioning

confidence: 99%

Revisiting Remane’s concept: evidence for high plankton diversity and a protistan species maximum in the horohalinicum of the Baltic Sea

Telesh¹,

Schubert²,

Skarlato³

2011

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Ecological and evolutionary processes have shaped current biodiversity patterns. For brackish-water ecosystems, Remane's Artenminimum ('species minimum') concept argues that taxonomic diversity in organisms is lowest within the horohalinicum, which occurs at salinity 5 to 8. This concept developed from macrozoobenthos data; it originated from, and is still applied to, the geologically young Baltic Sea, the world's largest semi-enclosed, brackish water body with a unique permanent salinity gradient. We re-assessed pelagic biodiversity in the Baltic Sea, which had long remained underestimated. We show that phyto-and zooplankton in Baltic waters exhibit unexpectedly high diversity (> 4000 taxa), with dominance by protists. Protists in the Baltic Sea follow a binomial distribution mode, while metazooplankton diversity decreases exponentially with higher salinity; however, species richness of both groups peaks in the horohalinicum. Drifting within large water masses, planktonic organisms are affected by only moderate salinity fluctuations (compared to benthic species), and thus prosper in brackish environments. The present study challenges Remane's concept for large water bodies with relatively stable salinity gradients and substantiates a novel ecological perspective of the previously overlooked high protistan diversity in brackish waters. We infer that the pronounced adaptability and advanced osmoregulation strategies of protists are the result of large-scale ecological and evolutionary processes. The novel brackish-water biodiversity pattern underpins the proposed protistan species-maximum concept, which refines Remane's model by discriminating between the effects of the horohalinicum on the biodiversity of small motile versus large sessile organisms.

show abstract

“…This indicates rather stronger species-specific than familyspecific adaptations to salinity. Chlebovic (1968, cited by Klinkhardt & Winkler, 1989 stated that a salinity of 5-6‰ acts as a general ecophysiological barrier for the development of freshwater fish eggs. Cobitis taenia reaches the upper limit of this range which corresponds to the tolerances of bream, carp and pikeperch, Stizostedion lucioperca (L.).…”

mentioning

confidence: 99%

Influence of salinity on early development in the spined loach

Bohlen

1999

Journal of Fish Biology

View full text Add to dashboard Cite

Spined loach Cobitis taenia developed successfully between 0·12 and 4·80‰ salinity. At 6·00‰, net production was strongly reduced, and development failed at or above 7·20‰. Below 0·12‰ S, net production became variable, indicating restrictive effects. In comparison with other primary freshwater fish species C. taenia has a low sensitivity to salinity. The upper limit for early development was equal to the highest salinity under which C. taenia adults are found along the Baltic coast. Therefore, salinity should not limit early development within the brackish habitats of spined loach. 1999 The Fisheries Society of the British Isles

show abstract

Some peculiar features of the hydrochemical regime and the fauna of mesohaline waters

Cited by 55 publications

References 2 publications

Influence of water salinity on the survival of embryos and growth of the sichel larvaePelecus cultratus(L.) under controlled conditions

Influence of water salinity on the survival of embryos and growth of the sichel larvaePelecus cultratus(L.) under controlled conditions

Revisiting Remane’s concept: evidence for high plankton diversity and a protistan species maximum in the horohalinicum of the Baltic Sea

Influence of salinity on early development in the spined loach

Contact Info

Product

Resources

About