Modelling the retention and survival of Browns Bank haddock larvae using an early life stage model

2001 ◽  
Vol 10 (3) ◽  
pp. 284-296 ◽  
Author(s):  
D. Brickman ◽  
N. L. Shackell ◽  
K. T. Frank
Keyword(s):  
Early Life ◽  
Life Stage ◽  
Early Life Stage ◽  
Stage Model

Modelling the dispersal and mortality of Browns Bank egg and larval haddock (Melanogrammus aeglefinus)

2000 ◽  
Vol 57 (12) ◽  
pp. 2519-2535 ◽  
Author(s):  
David Brickman ◽  
Kenneth T Frank
Keyword(s):  
Early Life ◽  
Life Stage ◽  
Model Performance ◽  
Early Life Stage ◽  
Integral Model ◽  
Melanogrammus Aeglefinus ◽  
Stage Model ◽  
Larval Stages ◽  
Abundance Data ◽  
Haddock Melanogrammus Aeglefinus

An early life stage model is described with constant mortality for egg and larval stages. The model is used to simulate the stage 4 egg and larval data for haddock (Melanogrammus aeglefinus) in southwest Nova Scotia for the years 1983-1985. The model is initialized using published abundance and mortality estimates for these years, and its output is compared with field data. We find that the model does a systematically poor job of reproducing both the spatial-temporal and area-integrated versions of the data. To understand the discrepancy, we derive an integrated version of the model (integral model) and analyze its properties. This leads to a general method for determining whether sequential stage abundance data is consistent with a stage-dependent constant-mortality model. We use this method to show that a constant-mortality early life stage model is not consistent with the data. The integral model allows for year-day dependent mortality functions, which results in almost perfect fits to the abundance data. These functions can be transferred to the early life stage model with significantly improved model performance, although spatial differences remain. The implications of the integral-model analysis for sequential stage mortality estimation are discussed.

Age and growth of early life stage Atlantic Tarpon Megalops atlanticus from the northcentral Gulf of Mexico

2021 ◽  
Author(s):  
Patrick M. Graham ◽  
James S. Franks ◽  
Evan J. Anderson ◽  
Robert T. Leaf ◽  
Jason D. Tilley
Keyword(s):  
Gulf Of Mexico ◽  
Early Life ◽  
Life Stage ◽  
Early Life Stage ◽  
Age And Growth ◽  
Megalops Atlanticus ◽  
Atlantic Tarpon

The presence of MWCNTs reduces developmental toxicity of PFOS in early life stage of zebrafish

2017 ◽  
Vol 222 ◽  
pp. 201-209 ◽  
Author(s):  
Shutao Wang ◽  
Changlu Zhuang ◽  
Jia Du ◽  
Chuan Wu ◽  
Hong You
Keyword(s):  
Early Life ◽  
Developmental Toxicity ◽  
Life Stage ◽  
Early Life Stage
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