Artificial maturation and larval production of the limpet Patella aspera Röding, 1798 (Patellogastropoda, Mollusca): Enhancing fertilization success of oocytes using NaOH‐alkalinized seawater

2020 ◽  
Author(s):  
Diego Castejón ◽  
José M. Cañizares ◽  
Natacha Nogueira ◽  
Carlos A. P. Andrade
Keyword(s):  
Fertilization Success ◽  
Larval Production ◽  
Artificial Maturation

Spatial ecology and growth in early life stages of bay anchovy Anchoa mitchilli in Chesapeake Bay (USA)

2020 ◽  
Vol 651 ◽  
pp. 125-143
Author(s):  
TD Auth ◽  
T Arula ◽  
ED Houde ◽  
RJ Woodland
Keyword(s):  
Chesapeake Bay ◽  
Spatial Ecology ◽  
Environmental Variability ◽  
Larval Growth ◽  
Larval Abundance ◽  
Spatial And Temporal Variability ◽  
Estuarine Ecosystem ◽  
Anchoa Mitchilli ◽  
Larval Production ◽  
Bay Anchovy

The bay anchovy Anchoa mitchilli is the most abundant fish in Chesapeake Bay (USA) and is a vital link between plankton and piscivores within the trophic structure of this large estuarine ecosystem. Baywide distributions and abundances of bay anchovy eggs and larvae, and larval growth, were analyzed in a 5 yr program to evaluate temporal and spatial variability based on research surveys in the 1995-1999 spawning seasons. Effects of environmental variability and abundance of zooplankton that serve as prey for larval bay anchovy were analyzed. In the years of these surveys, 97.6% of eggs and 98.8% of larvae occurred in the polyhaline lower bay. Median egg and larval abundances differed more than 10-fold for surveys conducted in the 5 yr and were highest in the lower bay. Within years, median larval abundance (ind. m-2) in the lower bay was generally 1-2 orders of magnitude higher than upper-bay abundance. Salinity, temperature, and dissolved oxygen explained 12% of the spatial and temporal variability in egg abundances and accounted for 27% of the variability in larval abundances. The mean, baywide growth rate for larvae over the 5 yr period was 0.75 ± 0.01 mm d-1, and was best explained by zooplankton concentration and feeding incidence. Among years, mean growth rates ranged from 0.68 (in 1999) to 0.81 (in 1998) mm d-1 and were fastest in the upper bay. We identified environmental factors, especially salinity, that contributed to broadscale variability in egg and larval production.

The relation between ovarian reserve and In-vitro fertilization success

2016 ◽  
Vol 1 (1) ◽  
pp. 8-15 ◽  
Author(s):  
Prashant Purohit ◽  
◽  
Mike Savvas ◽  
Keyword(s):  
In Vitro Fertilization ◽  
Ovarian Reserve ◽  
Fertilization Success ◽  
Vitro Fertilization

The Role of Jelly Coats in Sperm-Egg Encounters, Fertilization Success, and Selection on Egg Size in Broadcast Spawners

2001 ◽  
Vol 157 (6) ◽  
pp. 626
Author(s):  
Farley ◽  
Levitan
Keyword(s):  
Egg Size ◽  
Fertilization Success

scholarly journals Longer and faster sperm exhibit better fertilization success in Japanese quail

2021 ◽  
Vol 100 (4) ◽  
pp. 100980
Author(s):  
Mei Matsuzaki ◽  
Noritaka Hirohashi ◽  
Masaoki Tsudzuki ◽  
Mohammad Ibrahim Haqani ◽  
Teruo Maeda ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Fertilization Success

scholarly journals Potential Use of the Benthic Foraminifers Bulimina denudata and Eggerelloides advenus in Marine Sediment Toxicity Testing

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 775
Author(s):  
Mary McGann
Keyword(s):  
Sea Urchin ◽  
Marine Sediment ◽  
Sediment Toxicity ◽  
Toxicity Testing ◽  
Fertilization Success ◽  
Toxicity Tests ◽  
Sediment Chemistry ◽  
Benthic Foraminifers ◽  
Sediment Toxicity Tests ◽  
Unionized Ammonia

The benthic foraminifers Bulimina denudata and Eggerelloides advenus are commonly abundant in offshore regions in the Pacific Ocean, especially in waste-discharge sites. The relationship between their abundance and standard macrofaunal sediment toxicity tests (amphipod survival and sea urchin fertilization) as well as sediment chemistry analyte measurements were determined for sediments collected in 1997 in Santa Monica Bay, California, USA, an area impacted by historical sewage input from the Hyperion Outfall primarily since the late 1950s. Very few surface samples proved to be contaminated based on either toxicity or chemistry tests and the abundance of B. denudata did not correlate with any of these. The abundance of E. advenus also did not correlate with toxicity, but positively correlated with total solids and negatively correlated with arsenic, beryllium, chromium, lead, mercury, nickel, zinc, iron, and TOC. In contrast, several downcore samples proved to be contaminated as indicated by both toxicity and chemistry data. The abundance of B.denudata positively correlated with amphipod survival and negatively correlated with arsenic, cadmium, unionized ammonia, and TOC; E. advenus negatively correlated with sea urchin fertilization success as well as beryllium, cadmium, and total PCBs. As B. denudata and E. advenus are tolerant of polluted sediments and their relative abundances appear to track those of macrofaunal toxicity tests, their use as cost- and time-effective marine sediment toxicity tests may have validity and should be further investigated.

scholarly journals Artificial maturation of [FeFe] hydrogenase in a redox polymer film

2021 ◽  
Author(s):  
Christina Felbek ◽  
Steffen Hardt ◽  
Cecilia Papini ◽  
Debajyoti Pramanik ◽  
Vincent Artero ◽  
...  
Keyword(s):  
Polymer Film ◽  
Active Site ◽  
Redox Polymer ◽  
Artificial Maturation

We demonstrate that the insertion of the dinuclear active site of [FeFe] hydrogenase into the apo-enzyme can occur when the enzyme is embedded in a film of redox polymer, under...

Recolonization of lake whitefish river spawning ecotypes and estimates of riverine larval production in Green Bay, Lake Michigan

2021 ◽  
Author(s):  
Andrew L. Ransom ◽  
Christopher J. Houghton ◽  
S. Dale Hanson ◽  
Scott P. Hansen ◽  
Lydia R. Doerr ◽  
...  
Keyword(s):  
Lake Michigan ◽  
Lake Whitefish ◽  
Green Bay ◽  
Larval Production

Evaluation of the liquid hydrocarbon potential of coal by artificial maturation techniques

1991 ◽  
Vol 17 (6) ◽  
pp. 749-764 ◽  
Author(s):  
S.C. Teerman ◽  
R.J. Hwang
Keyword(s):  
Liquid Hydrocarbon ◽  
Hydrocarbon Potential ◽  
Artificial Maturation
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