Atlantic and shortnose sturgeons of the Hudson River: Common and divergent life history attributes

Bain, Mark B.

doi:10.1007/0-306-46854-9_23

Cited by 76 publications

(154 citation statements)

References 17 publications

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“…We also do not know what proportion of sturgeon remain in river systems during summer versus move to marine habitats. Generally it is thought that juvenile Atlantic Sturgeon stay in riverine areas year-round, while adults move into rivers during spring for spawning but move out into marine environments during other times (Smith 1985;Bain 1997). Our study and others (Moser and Ross 1995;Collins et al 2000) have observed adult and subadult Atlantic Sturgeon in riverine areas during summer.…”

Section: Discussionsupporting

confidence: 61%

Estimating Sturgeon Abundance in the Carolinas Using Side‐Scan Sonar

Flowers

Hightower

2015

Mar Coast Fish

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Sturgeons (Acipenseridae) are one of the most threatened taxa worldwide, including species in North Carolina and South Carolina. Populations of Atlantic Sturgeon Acipenser oxyrinchus in the Carolinas have been significantly reduced from historical levels by a combination of intense fishing and habitat loss. There is a need for estimates of current abundance, to describe status, and for estimates of historical abundance in order to provide realistic recovery goals. In this study we used N‐mixture and distance models with data acquired from side‐scan sonar surveys to estimate abundance of sturgeon in six major sturgeon rivers in North Carolina and South Carolina. Estimated abundances of sturgeon greater than 1 m TL in the Carolina distinct population segment (DPS) were 2,031 using the count model and 1,912 via the distance model. The Pee Dee River had the highest overall abundance of any river at 1,944 (count model) or 1,823 (distance model). These estimates do not account for sturgeon less than 1 m TL or occurring in riverine reaches not surveyed or in marine waters. Comparing the two models, the N‐mixture model produced similar estimates using less data than the distance model with only a slight reduction of estimated precision. Received May 3, 2014; accepted October 14, 2014

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Section: Discussionsupporting

confidence: 61%

Estimating Sturgeon Abundance in the Carolinas Using Side‐Scan Sonar

Flowers

Hightower

2015

Mar Coast Fish

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“…Spawning adult Atlantic sturgeon generally migrate upriver in spring/early summer, which occurs in February-March in southern systems, April-May in Mid-Atlantic systems, and MayJuly in Canadian systems (Bain 1997;Caron et al 2002;Murawski et al 1977;Smith 1985a;Smith and Clugston 1997). In some southern rivers, a fall spawning migration may also occur (Moser et al 1998;Rogers and Weber 1995;Weber and Jennings 1996).…”

Section: Life History Informationmentioning

confidence: 99%

“…Estuarine habitats are important for juveniles, serving as nursery areas by providing abundant foraging opportunities, as well as thermal and salinity refuges, for facilitating rapid growth. Some juveniles will take up residency in non-natal rivers that lack active spawning sites (Bain 1997). Residency time of young Atlantic sturgeon in estuarine areas varies between one and six years (Schueller and Peterson 2010;Smith 1985a), after which Atlantic sturgeon start outmigration to the marine environment.…”

Section: Life History Informationmentioning

confidence: 99%

Kemp's Ridley Sea Turtle Saga and Setback: Novel Analyses of Cumulative Hatchlings Released and Time-Lagged Annual Nests in Tamaulipas, Mexico

Caillouet¹,

Gallaway

Putman

2016

Chelonian Conservation and Biology

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“…Juveniles grow quickly and subadults reach lengths of as much as 130 cm total length or more (Bain 1997), which could promote high levels of intraspecific competition within a natal system. Moreover, its large size and plated torso should reduce its field of predators when moving through coastal waters compared with other anadromous fishes.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, its large size and plated torso should reduce its field of predators when moving through coastal waters compared with other anadromous fishes. Finally, Atlantic sturgeon may exit natal estuaries as young as age 2 (Bain 1997), or, in rare instances, at age 1 (Savoy et al 2011), but some females from northern populations may not mature until well into their 20s (Scott and Crossman 1973). This means that individual subadults may have almost a decade to as much as two decades with no imperative to return to their natal river and are thus free for an extended time to inhabit both coastal waters and non-natal estuaries.…”

Section: Introductionmentioning

confidence: 99%

Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound

Waldman

King

Savoy

et al. 2012

Estuaries and Coasts

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The anadromous acipenserid Atlantic sturgeon Acipenser oxyrinchus was listed in 2012 under the U.S. Endangered Species Act as having four endangered and one threatened distinct population segment (DPS) in American waters. Anthropogenic activities outside of natal estuaries, particularly bycatch, may hinder the abilities of some populations to rebuild. Most Atlantic sturgeon are residential for their first 2-6 years within their natal estuaries, whereas older subadults and adults may migrate to nonnatal estuaries and coastal locations. Previous studies demonstrated that subadults and adults aggregate during summer at locations in Long Island Sound (LIS) and its tributary, the Connecticut River; however, the population origin of these fish is unknown. Because of its geographic proximity and relatively robust population, we hypothesized that the LIS and Connecticut River aggregations were almost solely derived from the Hudson River. We used microsatellite nuclear DNA analysis at 11 loci and mitochondrial DNA control region sequence analyses to estimate the relative contributions of nine Atlantic sturgeon populations and the five DPS to these aggregations using individual-based assignment tests and mixed-stock analysis. From 64 to 73 % of specimens from LIS were estimated to be of Hudson origin. Similarly, 66-76 % of specimens from the Connecticut River were of Hudson origin. However, moderate numbers of specimens were detected from distant spawning populations in the southeastern DPS and from two populations once thought to be extirpated or nearly so, the James River (6-7.3 %), and the Delaware River (7.6-12 %). Additionally, specimens were detected from all five DPS in both the LIS and Connecticut River collections. These results highlight the difficulty of evaluating the status of individual Atlantic sturgeon populations because of the propensity of subadults and adults to migrate for extended duration to distant sites where they may be vulnerable to anthropogenic disturbances.

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Atlantic and shortnose sturgeons of the Hudson River: Common and divergent life history attributes

Cited by 76 publications

References 17 publications

Estimating Sturgeon Abundance in the Carolinas Using Side‐Scan Sonar

Estimating Sturgeon Abundance in the Carolinas Using Side‐Scan Sonar

Kemp's Ridley Sea Turtle Saga and Setback: Novel Analyses of Cumulative Hatchlings Released and Time-Lagged Annual Nests in Tamaulipas, Mexico

Stock Origins of Subadult and Adult Atlantic Sturgeon, Acipenser oxyrinchus, in a Non-natal Estuary, Long Island Sound

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