Osmoregulation in the sheepshead minnow, Cyprinodon variegatus: Influence of a fluctuating salinity regime

  title={Osmoregulation in the sheepshead minnow, Cyprinodon variegatus: Influence of a fluctuating salinity regime},
  author={Dennis C. Haney},
Cyprinodon variegatus (sheepshead minnow), a common coastal resident of the western Atlantic Ocean and Gulf of Mexico, can live in ambient salinities ranging from 0‰ to greater than 140‰. Fish in this study were obtained from a Gulf of Mexico salt marsh near Cedar Key, Florida. This study examined the ability of individual C. variegatus to regulate plasma osmolality under the influence of a cycling salinity regime. Individuals of C. variegatus were exposed for 21 d to one of seven cyclical… 

Salinity acclimation modulates copper toxicity in the sheepshead minnow, Cyprinodon variegatus

It is shown that even in euryhaline fish, salinity acclimation can have a drastic effect on Cu toxicity, having increased whole-body Cu and liver LPO and decreased whole- body Na levels.

The impact of environmental changes on the fish faunas of Western Australian south-coast estuaries

Data on the fish communities and environmental conditions in three normally-closed estuaries (Stokes, Culham and Hamersley inlets) on the central south coast of Western Australia have been obtained

Linking Hydrologic Connectivity in Salt Marsh Ponds to Fish Assemblages across a Heterogenous Coastal Habitat

ABSTRACT Ragan, A.N. and Wozniak, J.R., 2019. Linking hydrologic connectivity in salt marsh ponds to fish assemblages across a heterogenous coastal habitat. Journal of Coastal Research, 35(3),

Relationships Between Fish Assemblage Structure and Selected Environmental Factors in Maryland's Coastal Bays

It is demonstrated that environmental gradients important for structuring fish assemblages differ between summer and non-summer months and there is a general shift in habitat use during summer from the lower estuary to other areas of the coastal bays.

The Role of Hybrid Vigor in the Replacement of Pecos Pupfish by Its Hybrids with Sheepshead Minnow

Results indicate that eradication of hybrids and restoration of C. pecosensis to its native range is unlikely, and illustrates how, after hybridization has occurred, conflict may arise between formerly complementary conservation goals.

Rapid Changes in Salinity and Cyanobacterial Exposure Influence condition of Young of the Year (YOY) Perch (Perca fluviatilis) : A Field Study in the Curonian Lagoon(Lithuania)

Two decades ago the recruitment of YOY perch (Perca fluviatilis) started to decline along the Swedish east cost of the Baltic Sea. Factors that influence recruitment are e.g. eutrophication that ca

Multi-stressor Effects of Ultraviolet Light, Temperature, and Salinity on Louisiana Sweet Crude Oil Toxicity in Larval Estuarine Organisms

Environmental conditions at the time of an oil spill will significantly influence oil toxicity and organismal response and should be taken into consideration in toxicity testing and oil spill damage assessments.

Sexual selection promotes hybridization between Pecos pupfish, Cyprinodon pecosensis and sheepshead minnow, C. variegatus

Results indicate that active inter‐ and intra‐sexual selection contributed to the accelerated hybridization between these two species and by including the possibility that some aspects of a hybridization and introgression event may be under positive selection, researchers may better understand the dynamics that lead to hybrid zone stability or the spread of introgressed genetic material.



Osmotic regulation in the Sheepshead Minnow Cyprinodon variegatus Lacépède

The range of ambient salinities over which good regulation of plasma concentration was shown was found to be directly correlated with the magnitude of the salinity tolerance range of all of the species compared.

A study of the adaptation of marine organisms to changing salinities with special reference to the shore crab Carcinus maenas (L.).

  • D. H. Spaargaren
  • Environmental Science
    Comparative biochemistry and physiology. A, Comparative physiology
  • 1974

Ontogeny and evolution of salinity tolerance in anadromous salmonids: Hormones and heterochrony

Differences in developmental patterns of endocrine activity are hypothesized to be responsible for the differences in timing (heterochrony) of increased salinity tolerance among and within salmonid species.

Electrophoretic Comparison of Cyprinodon variegatus Lacépède and Cyprinodon hubbsi Carr, with Comments on the Genus Cyprinodon (Atheriniformes: Cyprinodontidae)

The data support Johnson and Snelson's (1978) placing of C. hubbsi in synonymy with C. variegatus, and a number of nominal allopatric species are seemingly related to it, constituting a "variegatus complex" within the genus.

Comparative-analysis of ionoregulation in rainbow-trout (Salmo-Gairdneri) of different sizes following rapid and slow salinity adaptation

Plasma ionic values and gill (Na+,K+)-ATPase activity were compared for rainbow trout (Salmo gairdneri) of three different fork lengths (  15 cm) following transference (1) from freshwater directly

Body water content over a range of ambient salinities in the sheepshead minnow

Body water content was determined on groups of Cyprinodon variegatus after sequential acclimation to ambient salinities in the range from fresh water to 100%, with only a 2·5% difference in body water content over this wide range of ambientsalinities.