scholarly journals First report of piscine nodavirus infecting wild winter flounder Pleuronectes americanus in Passamaquoddy Bay, New Brunswick, Canada

2002 ◽  
Vol 49 ◽  
pp. 99-105 ◽  
Author(s):  
DE Barker ◽  
AM MacKinnon ◽  
L Boston ◽  
MDB Burt ◽  
DK Cone ◽  
...  
Keyword(s):  
New Brunswick ◽  
Winter Flounder ◽  
Pleuronectes Americanus ◽  
First Report ◽  
Passamaquoddy Bay

Induced Cytochrome P4501A in Winter Flounder, Pleuronectes americanus, from Offshore and Coastal Sites

1994 ◽  
Vol 51 (4) ◽  
pp. 933-941 ◽  
Author(s):  
Emily Monosson ◽  
John J. Stegeman
Keyword(s):  
East Coast ◽  
Dry Weight ◽  
Winter Flounder ◽  
Boston Harbor ◽  
Pleuronectes Americanus ◽  
Georges Bank ◽  
Urban Centers ◽  
Cytochrome P4501a ◽  
Passamaquoddy Bay ◽  
Specific Activities

Cytochrome P4501A (CYP1A), Aroclor 1254 (A1254), and 3,3′,4,4′-tetrachlorobiphenyl (TCB) were measured in liver of winter flounder, Pleuronectes americanus, from Boston Harbor, Mass., Hempsted Harbor, N.Y., Niantic, Conn., and an offshore site, Georges Bank. We also measured CYP1A content and activity in flounder from Passamaquoddy Bay, N.B. Concentrations of A1254 and TCB were the least in fish from Georges Bank (0.46 and 0.002 μg∙g dry weight−1, respectively); concentrations in fish from Boston, Niantic, and Hempsted ranged from 7.6 to 11.3 μg∙g−1 and from 0.013 to 0.024 μg∙g−1. Immunodetected microsomal CYP1A contents (expressed as scup P450E equivalents) were 0.17 and 0.19 nmol∙mg−1 in fish from Georges Bank and Passamaquoddy and 0.25–0.41 nmol∙mg−1 in fish from Boston, Niantic, and Hempsted. Ethoxyresorufin-O-deethylase specific activities likewise were greater in fish from Boston, Niantic, and Hempsted (1.7–2.4 nmol∙min−1∙mg−1) than in fish from Georges Bank or Passamaquoddy (0.83 and 0.61 nmol∙min−1∙mg−1). CYP1A content and activity were correlated with hepatic concentrations of A1254 and TCB. These data, together with data reported in previous studies, indicate that strong induction of CYP1A protein occurs in winter flounder populations along most of the industrialized east coast and that induction of CYP1A is common, but less strong, at sites distant from the urban centers of the Northeast.

Digenean (Trematoda) populations in winter flounder (Pseudopleuronectes americanus) from Passamaquoddy Bay, New Brunswick, Canada

1985 ◽  
Vol 63 (7) ◽  
pp. 1699-1705 ◽  
Author(s):  
J. S. Scott
Keyword(s):  
New Brunswick ◽  
Alimentary Tract ◽  
Feeding Activity ◽  
The Body ◽  
Winter Flounder ◽  
Differential Migration ◽  
Pseudopleuronectes Americanus ◽  
Length Frequency ◽  
Frequency Distributions ◽  
Passamaquoddy Bay

Examination of monthly samples of winter flounder (Pseudopleuronectes americanus) from Passamaquoddy Bay revealed seven digenean parasites (Genolinea laticauda, Podocotyle atomon, Stenakron vetustum, Fellodistomum furcigerum, Derogenes varicus, Lecithaster gibbosus, and Steganoderma formosum) in the alimentary tract and two metacercariae (Stephanostomum baccatum and Cryptocotyle lingua) in the body surface tissues and gills. Prevalence of alimentary tract parasites ranged from 0.2 in S. formosum to 39.8 in P. atomon and intensity ranged from 1.5 for D. varicus to 7.0 for S. formosum (one fish). Monthly and seasonal levels of prevalence varied: high in spring and autumn and low in summer and winter for most species. Prevalence and length-frequency distributions of the parasites did not support differential migration by size group or diminishing feeding activity from spring to winter in winter flounder, as proposed in other studies.

Herring Fishery in Southern New Brunswick

1960 ◽  
Vol 17 (2) ◽  
pp. 133-168
Author(s):  
R. A. McKenzie ◽  
S. N. Tibbo
Keyword(s):  
New Brunswick ◽  
Tidal Power ◽  
Annual Variations ◽  
Significant Relationships ◽  
Passamaquoddy Bay

Most of the herring taken in the Passamaquoddy area of southern New Brunswick are caught in stationary weirs built close to shore. Analyses of weir catches show no significant relationships between average catches inside Passamaquoddy Bay and catches in outside areas for the same year. Weirs inside Passamaquoddy Bay are more efficient and catch about twice as many herring per weir as those outside the Bay.Seasonal and annual variations both in individual weir catches and in total catches in the various statistical districts of Charlotte County are far greater now than any changes that can be forecast as resulting from the installation of the proposed Passamaquoddy tidal power dams.

Chemical contaminants and hepatic lesions in winter flounder (Pleuronectes americanus) from the northeast coast of the United States

1993 ◽  
Vol 27 (13) ◽  
pp. 2759-2771 ◽  
Author(s):  
Lyndal L. Johnson ◽  
Carla M. Stehr ◽  
O. Paul Olson ◽  
Mark S. Myers ◽  
Susan M. Pierce ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Winter Flounder ◽  
Pleuronectes Americanus ◽  
Chemical Contaminants ◽  
Hepatic Lesions ◽  
Northeast Coast

Interannual Mixed Function Oxidase (MFO) Activity in Winter Flounder (Pleuronectes americanus) from a Coal Tar Contaminated Estuary

1994 ◽  
Vol 51 (6) ◽  
pp. 1368-1375 ◽  
Author(s):  
V. Vignier ◽  
J. H. Vandermeulen ◽  
J. Singh ◽  
D. Mossman
Keyword(s):  
Nova Scotia ◽  
Coal Tar ◽  
Dry Weight ◽  
Erod Activity ◽  
Winter Flounder ◽  
Mixed Function Oxidase ◽  
Pleuronectes Americanus ◽  
Cyt B ◽  
Sydney Estuary ◽  
Pyrene Hydroxylase

7-Ethoxyresorufin-O-deethylase (EROD), benzo[a]pyrene hydroxylase (BaPH), and cytochromes P-450 (cyt-P450) and b5 (cyt-b5) varied annually in winter flounder (Pleuronectes americanus) collected in August of 1987, 1988, and 1989 from a coal tar contaminated estuary (Sydney, Nova Scotia, Canada). For August 1989, with fish available from all estuary areas, these indices correlated strongly with a spatial (along estuary) gradient in PAH in bottom sediments (7.19 ± 6.59–191 ± 184 μg g dry weight−1). Mean EROD activities in flounder near the coal tar source were up to seven times those in other estuary areas and paralleled sediment PAH loadings; however, standard deviations were high. Correlations for all MFO indices and sediment PAH were obtained in female flounder (P < 0.01: EROD, cyt-b5, cyt-P450; P < 0.02: BaPH). For male flounder the trend was similar, but only cyt-P450 correlated with sediment PAH (P < 0.017). BaPH activity was highest near the coal tar source but was more variable and less sensitive to pollutant levels than EROD activity. Somatic indices in fish from Sydney estuary and St. George's Bay were similar. Winter flounder are vulnerable to PAH-induced MFO activities from coal tar contaminated sediments, but MFO induction does not occur equally in all fish; single-season or single-year data must be interpreted with caution.

Life history of Mysis stenolepis Smith (Crustacea, Mysidacea)

1975 ◽  
Vol 53 (7) ◽  
pp. 942-952 ◽  
Author(s):  
T. Amaratunga ◽  
S. Corey
Keyword(s):  
Young Adults ◽  
Life History ◽  
New Brunswick ◽  
Shallow Water ◽  
Field Study ◽  
Sexual Maturity ◽  
Developmental Stages ◽  
Shallow Waters ◽  
Passamaquoddy Bay ◽  
History Of

A 17-month field study showed that Mysis stenolepis in Passamaquoddy Bay, New Brunswick lives for about 1 year. Young are released in shallow water early in spring and grow rapidly during the summer. In the fall, young adults migrate to deeper water where they reach sexual maturity. Transfer of sperm lakes place during winter in deeper regions of the Bay. soon after which the males die. Females survive and in spring migrate to shallow waters to release young after which they die. Females breed once and carry an average of 157 young per brood. Developmental stages of the postmarsupial young are described and discussed.

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