Larval Production of the Caridean Shrimp, Crangon septemspinosa, in Waters Adjacent to Chesapeake Bay in Relation to Oceanographic Conditions

Ingo S. Wehrtmann

doi:10.2307/1352680

Larval Production of the Caridean Shrimp, Crangon septemspinosa, in Waters Adjacent to Chesapeake Bay in Relation to Oceanographic Conditions

Estuaries ◽

10.2307/1352680 ◽

1994 ◽

Vol 17 (2) ◽

pp. 509 ◽

Cited By ~ 5

Author(s):

Ingo S. Wehrtmann

Keyword(s):

Chesapeake Bay ◽

Caridean Shrimp ◽

Larval Production ◽

Crangon Septemspinosa ◽

Oceanographic Conditions

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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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Seasonal Distribution and Abundance of Sand Shrimp Crangon septemspinosa in the York River-Chesapeake Bay Estuary

Chesapeake Science ◽

10.2307/1351058 ◽

1976 ◽

Vol 17 (2) ◽

pp. 131 ◽

Cited By ~ 5

Author(s):

Paul A. Haefner

Keyword(s):

Chesapeake Bay ◽

Seasonal Distribution ◽

York River ◽

Crangon Septemspinosa

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Between ‘Savage Man’ and ‘Most Faithful Englishman’ Manteo and the Early Anglo-Indian Exchange, 1584–1590

Itinerario ◽

10.1017/s0165115300044545 ◽

2000 ◽

Vol 24 (2) ◽

pp. 146-169 ◽

Cited By ~ 1

Author(s):

Michael Leroy Oberg

Keyword(s):

North Carolina ◽

Chesapeake Bay ◽

One Year ◽

Anglo Indian

In August of 1587 Manteo, an Indian from Croatoan Island, joined a group of English settlers in an attack on the native village of Dasemunkepeuc, located on the coast of present-day North Carolina. These colonists, amongst whom Manteo lived, had landed on Roanoke Island less than a month before, dumped there by a pilot more interested in hunting Spanish prize ships than in carrying colonists to their intended place of settlement along the Chesapeake Bay. The colonists had hoped to re-establish peaceful relations with area natives, and for that reason they relied upon Manteo to act as an interpreter, broker, and intercultural diplomat. The legacy of Anglo-Indian bitterness remaining from Ralph Lane's military settlement, however, which had hastily abandoned the island one year before, was too great for Manteo to overcome. The settlers found themselves that summer in the midst of hostile Indians.

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