Larval abundance and recruitment of Carcinus maenas L. close to its southern geographic limit: a case of match and mismatch

The hepatopancreas consists of a pair of bilobed tubules comprised of two epithelial cell types. S cells are absorptive and accumulate metals such as copper and zinc. Ca++ concentrations vary between the S and B cells and during the molt cycle. Roer and Dillaman implicated Ca++-ATPase in calcium transport during molting in Carcinus maenas. This study was undertaken to compare the localization of Ca++-ATPase activity in the S and B cells during intermolt.

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THULIUM BIOACCUMULATION BY THE SHORE CRAB CARCINUS MAENAS COLLECTED FROM THE FRENCH COASTS OF THE CHANNEL : A STRUCTURAL, ULTRASTRUCTURAL AND MICROANALYTICAL STUDY BY SECONDARY ION MASS AND X RAY SPECTROMETRY

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19842123 ◽

1984 ◽

Vol 45 (C2) ◽

pp. C2-541-C2-544

Author(s):

C. Chassard-Bouchaud ◽

P. Hallegot ◽

M. Meignan

Keyword(s):

Carcinus Maenas ◽

Shore Crab ◽

X Ray ◽

Secondary Ion

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Linking eelgrass decline and impacts on associated fish communities to European green crab Carcinus maenas invasion

Marine Ecology Progress Series ◽

10.3354/meps11674 ◽

2016 ◽

Vol 548 ◽

pp. 31-45 ◽

Cited By ~ 27

Author(s):

K Matheson ◽

CH McKenzie ◽

RS Gregory ◽

DA Robichaud ◽

IR Bradbury ◽

...

Keyword(s):

Carcinus Maenas ◽

Fish Communities ◽

Green Crab ◽

European Green Crab

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Interannual variation in larval abundance and growth in snapper Chrysophrys auratus (Sparidae) is related to prey availability and temperature

Marine Ecology Progress Series ◽

10.3354/meps10388 ◽

2013 ◽

Vol 487 ◽

pp. 151-162 ◽

Cited By ~ 19

Author(s):

HM Murphy ◽

GP Jenkins ◽

PA Hamer ◽

SE Swearer

Keyword(s):

Interannual Variation ◽

Prey Availability ◽

Larval Abundance

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

Marine Ecology Progress Series ◽

10.3354/meps13431 ◽

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.

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Larval Transport in the Coastal Zone: Biological and Physical Processes

10.1093/oso/9780198786962.003.0011 ◽

2018 ◽

Cited By ~ 5

Keyword(s):

Simulation Models ◽

Population Connectivity ◽

Larval Transport ◽

Larval Abundance ◽

Transport Mechanisms ◽

Larval Behavior ◽

Physical Processes ◽

Ecological Processes ◽

Emergent Technologies ◽

Advection Diffusion

Larval transport is fundamental to several ecological processes, yet it remains unresolved for the majority of systems. We define larval transport, and describe its components, namely, larval behavior and the physical transport mechanisms accounting for advection, diffusion, and their variability. We then discuss other relevant processes in larval transport, including swimming proficiency, larval duration, accumulation in propagating features, episodic larval transport, and patchiness and spatial variability in larval abundance. We address challenges and recent approaches associated with understanding larval transport, including autonomous sampling, imaging, -omics, and the exponential growth in the use of poorly tested numerical simulation models to examine larval transport and population connectivity. Thus, we discuss the promises and pitfalls of numerical modeling, concluding with recommendations on moving forward, including a need for more process-oriented understanding of the mechanisms of larval transport and the use of emergent technologies.

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Control of Lepidopterous Larvae on Collard, 1997

Arthropod Management Tests ◽

10.1093/amt/23.1.91 ◽

1998 ◽

Vol 23 (1) ◽

pp. 91-91

Author(s):

J. V. Edelson ◽

M. Peters ◽

J. Duthie ◽

W. Roberts

Keyword(s):

Experimental Design ◽

Larval Abundance ◽

Hollow Cone ◽

Broadcast Application

Abstract Collard seed was planted in Mar at the AREC, Lane, OK. The experimental design was a RCB with 4 replicates and 9 treatments. Plots were 2 rows wide (72 inches) and 20 ft long with 20 ft alleys cut between plots. Plots were treated with insecticides using a CO2-powered backpack sprayer with a broadcast application of 72 inches from 4 hollow-cone nozzles applying 33 gal/A at 40 psi. Plots were treated on 4, 8, and 14 Jul. Plots were surveyed to determine larval abundance on 7, 11, and 17 Jul by examining 3 plants per plot and recording all larvae present.

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