Comparison of estuarine species sensitivities to three toxicants

1982 ◽  
Vol 11 (6) ◽  
pp. 681-692 ◽  
Author(s):  
Morris H. Roberts ◽  
J. Ernest Warinner ◽  
Chu -Fa Tsai ◽  
David Wright ◽  
L. Eugene Cronin
Keyword(s):  
Estuarine Species

The Gastropod Genus Bembicium Philippi

1958 ◽  
Vol 9 (4) ◽  
pp. 546 ◽  
Author(s):  
H Anderson
Keyword(s):  
Early Summer ◽  
Egg Masses ◽  
Estuarine Species ◽  
History Of ◽  
Living Species ◽  
The Times

A history of the nomenclature of the littorinid genus, Bembicium Phllippi, 1846, and its characters are given, and the anatomy of species of the genus is discussed. Three species are recognized and redescribed: a reef-living species, B. nanum (Lamarck); an estuarine species, B. auratum (Quoy & Gaimard); and the species B. melanostoma (Gmelin) which normally inhabits sheltered bays and inlets. Although all are intertidal animals, and show some measure of adaptability, each appears to be best suited to a particular habitat. B. melanostoma and B. nanum are usually found where the chlorinity of the water is close to that of the sea. B. auratum can withstand considerable variation in the chlorinity of its environment for periods of time which are not likely to be exceeded in its normal habitat. B. melanostoma mostly lives at higher tidal levels than B. nanum. In the aquarium B. nanum proved the most susceptible to desiccation. The egg masses of B. melanostoma contain fewer and larger eggs than those of B. auratum. In the laboratory spawning of B. auratum occurred during the spring and early summer. Under the same conditions specimens of B. melanostoma deposited eggs in October. The differences between the eggs and their development, and between the times of spawning of the two species collected from different littoral regions are also discussed.

Length-weight relationships of three estuarine species in the Comacchio Lagoon, Po River delta, Italy

2016 ◽  
Vol 32 (6) ◽  
pp. 1284-1285 ◽  
Author(s):  
M. Lanzoni ◽  
A. Gavioli ◽  
V. Aschonitis ◽  
M. Merighi ◽  
E. A. Fano ◽  
...  
Keyword(s):  
River Delta ◽  
Po River ◽  
Estuarine Species

Opportunity and taxon pulse: the central influence of coastal geomorphology on genetic diversification and endemism of strict estuarine species

2017 ◽  
Vol 44 (7) ◽  
pp. 1626-1639 ◽  
Author(s):  
Rafael A. Baggio ◽  
Sérgio B. Stoiev ◽  
Henry L. Spach ◽  
Walter A. Boeger
Keyword(s):  
Coastal Geomorphology ◽  
Estuarine Species

scholarly journals A new species of Anchoviella Fowler, 1911 (Clupeiformes: Engraulidae) from the Amazon basin, Brazil

2012 ◽  
Vol 10 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Marina V. Loeb
Keyword(s):  
New Species ◽  
Standard Length ◽  
Posterior Margin ◽  
Amazon Basin ◽  
Head Length ◽  
Estuarine Species ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Upper Jaw ◽  
A New Species

Anchoviella juruasanga is described from the drainages of rios Negro, Madeira, Tapajós, Trombetas, Tocantins, and Jari, in the Amazon basin, Brazil. The new species is distinguished from its congeners by having a short upper jaw, with its posterior tip extending between the verticals through anterior and posterior margins of the pupil (vs. posterior tip of upper jaw extending beyond the vertical through posterior margin of the pupil). Anchoviella juruasanga is also distinct from other strictly freshwater Amazonian species of the genus by the distance from tip of snout to posterior end of upper jaw between 8 and 11% in standard length (vs. 14% or more in A. alleni, A. carrikeri, A. guianensis, and A. jamesi). The anal-fin origin slightly posterior to or at the vertical through the base of the last dorsal-fin ray further distinguishes the new species from A. alleni (anal-fin origin posterior to the vertical through the last anal-fin ray by at least 14% of head length) and A. jamesi (anal-fin origin anterior to the vertical through the last anal-fin ray). An identification key for the Amazonian species of Anchoviella, including marine and estuarine species known to occur in the lower portion of the basin, is presented.

scholarly journals Impacts of climate change on the ecotoxicology of chemical contaminants in estuarine organisms

2015 ◽  
Vol 61 (4) ◽  
pp. 641-652 ◽  
Author(s):  
Marie E. Delorenzo
Keyword(s):  
Climate Change ◽  
Global Climate ◽  
Life Stage ◽  
Interactive Effects ◽  
Chemical Pollution ◽  
Chemical Contaminants ◽  
Climate Conditions ◽  
Mechanisms Of Toxicity ◽  
Estuarine Species ◽  
Impacts Of Climate Change

Abstract Global climate change effects will vary geographically, and effects on estuaries should be independently considered. This review of the impacts of climate change on the ecotoxicology of chemical contaminants aims to summarize responses that are specific to estuarine species. Estuarine organisms are uniquely adapted to large fluctuations in temperature, salinity, oxygen, and pH, and yet future changes in climate may make them more susceptible to chemical contaminants. Recent research has highlighted the interactive effects of chemical and nonchemical stressors on chemical uptake, metabolism, and organism survival. Assessments have revealed that the nature of the interaction between climate variables and chemical pollution will depend on estuarine species and life stage, duration and timing of exposure, prior stressor exposure, and contaminant class. A need for further research to elucidate mechanisms of toxicity under different abiotic conditions and to incorporate climate change factors into toxicity testing was identified. These efforts will improve environmental risk assessment of chemical contaminants and management capabilities under changing climate conditions.

Acute toxicity of Bisphenol A (BPA) to tropical marine and estuarine species from different trophic groups

2021 ◽  
Vol 268 ◽  
pp. 115911 ◽  
Author(s):  
Clarissa Naveira ◽  
Nathália Rodrigues ◽  
Fernanda S. Santos ◽  
Luciano N. Santos ◽  
Raquel A.F. Neves
Keyword(s):  
Acute Toxicity ◽  
Bisphenol A ◽  
Trophic Groups ◽  
Estuarine Species

The early life stages of an estuarine fish, the red drum (Sciaenops ocellatus), are tolerant to high pCO2

2017 ◽  
Vol 74 (4) ◽  
pp. 1042-1050 ◽  
Author(s):  
Joshua Lonthair ◽  
Rasmus Ern ◽  
Andrew J. Esbaugh
Keyword(s):  
Heart Rate ◽  
Fish Species ◽  
Early Life ◽  
Red Drum ◽  
Sciaenops Ocellatus ◽  
High Pco2 ◽  
Estuarine Fish ◽  
Life Stages ◽  
Early Life Stages ◽  
Estuarine Species

Ocean acidification (OA) and other climate change induced environmental alterations are resulting in unprecedented rates of environmental deterioration. This environmental change is generally thought to be too fast for adaptation using typical evolutionary processes, and thus sensitivity may be dependent on the presence of existing tolerant genotypes and species. Estuaries undergo natural pCO2 fluctuations over a variety of time scales, and levels regularly exceed the predicted end of the century values. Interestingly, estuarine fish species have been overlooked in reference to the impacts of OA. Here, we use the estuarine red drum (Sciaenops ocellatus) as a model to explore the hypothesis that early life stages of estuarine species have intrinsic tolerance to elevated pCO2. Our sensitivity endpoints included: survival, growth, yolk consumption, heart rate, and scototaxis. Survival was significantly decreased when exposed to 1300 μatm and 3000 μatm, and coincided with a significant increase in heart rate at the 3000 μatm exposure. However, these effects were less pronounced than the findings of previous studies on other marine fish species. Yolk depletion rate and standard length were not significantly affected by pCO2. Scototaxis behaviour was also not significantly affected by exposure to elevated levels of pCO2 under both acute and acclimated exposure scenarios. Overall, these results support the hypothesis that estuarine life history and habitat usage may play a critical role in determining sensitivity of fish species to OA. Furthermore, estuarine species may provide present-day insight into the physiological and ecological foundation of OA tolerance.

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