51813_Sturgeon biodioversity an.PDF

with landings substantially reduced from those re- ported before the turn of the century (Figure 1). From about 1951–1982, U.S. ...

ly to severely degraded. Dredging and filling dis- turbs benthic fauna, eliminates deep holes and al- ters rock substrates, all ...

per kg, respectively (Table 2). In GA, where there is a directed gill net fishery focused on capture of roe females, the ex-vess ...

Commission (ASMFC) completed development of coastal waters but harvest in freshwater has been a Fishery Management Plan (FMP) fo ...

and Canada (Dean 1894, Leach^14. Harkness & Dy- mond 1961, Hoff^2 , Smith & Dingley 1984). In recent years, there has be ...

been prepared by the Atlantic Sturgeon Aquacul- Acknowledgements ture and Stocking Committee (Smith^17 , St. Pierre^15 ). Prelim ...

Lazzari, M. A., J. C. OHerron, II& R. W. Hastings. 1986. Occur- rence of juvenile Atlantic sturgeon,Acipenser oxyvhynchus,in ...

Environmental Biology of Fishes48:347–358, 1997. © 1997Kluwer Academic Publishers. Printed in the Netherlands Atlantic and short ...

Endangered Species Act, 1973) of the U. S. endan- species was assigned to the National Marine Fisher- gered species list (specie ...

Figure 1.Life intervals and seasonal distribution of shortnose sturgeon in the Hudson Riverestuaryrelative to river features, ri ...

reported that females spawn every third to fifth year, and males every second year in the Saint John River, New Brunswick. This ...

Figure 3. Life intervals and seasonal distribution of Atlantic sturgeon in the Hudson River estuary relative to river features, ...

behaviorso I treat them as one life history interval (Figure 1). Growth rates for shortnose sturgeon vary by re- gion and sex bu ...

(Buckley & Kynard 1981, Taubert 1980), with Hud- son River embryos ranging in size from 15 to 18 mm TL at 10 to 15 days of a ...

Den Avyle^7 ). Large Atlantic sturgeon arelikely to be femalesbecause ofmarkedsexualdimorphism (Figure 4). stream of aspawning s ...

fromlarva to juvenilesappears tooccur atabout 30 mm T L (Table 1 )based onHudsonRiver specimens (Bath et al.1981). Juvenilemarin ...

(Waldman et al.1996).Consequently,latejuvenile Atlantic sturgeon from the HudsonRiver may an- nually use otherriverine habitats ...

The protracted period of Atlantic sturgeonemigra- tion (4 years) indicatesthat the twospeciesoverlap considerably in space,rood, ...

D.P.Dodge(ed.) Proceedings of theInternationalLarge River Symposium,Can.Spec. Publ.Fish.Aquat.Sci. 106. McDowall, R.M.1987. Theo ...

Environmental Biology of fishes 48:359–370. 1997. © 1997KluwerAcademic Publishers.Printed in theNetherlands Biological character ...