Grass Carp Larvae in the Lower Missouri River and Its Tributaries

Brown, Danny J.; Coon, Thomas G.

doi:10.1577/1548-8675(1991)011<0062:gclitl>2.3.co;2

Cited by 23 publications

(12 citation statements)

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“…Collections made between 1981 and 1983 found grass carp larvae in four major rivers of the lower Mississippi River Valley: the Atchafalaya River, the Ouachita River, the Mississippi River Diversion Channel and the Red River (Zimpfer et al, 1987). More recently, Brown and Coon (1991) found grass carp larvae in four tributaries of the Missouri River and at three sampling stations in the river itself. Clearly, a growing database indicates that grass carp are not functionally sterile in US waters.…”

Section: Background and Distributionmentioning

confidence: 99%

Biology and management of grass carp (Ctenopharyngodon idella, Cyprinidae) for vegetation control: a North American perspective

Chilton

Muoneke

1992

Rev Fish Biol Fisheries

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Section: Background and Distributionmentioning

confidence: 99%

Biology and management of grass carp (Ctenopharyngodon idella, Cyprinidae) for vegetation control: a North American perspective

Chilton

Muoneke

1992

Rev Fish Biol Fisheries

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“…For many years after their initial introduction, concern regarding natural reproduction was minimal (Chilton and Muoneke 1992). Evidence of the natural reproduction of grass carp was found in the Mississippi River in 1980 (Conner et al 1980) and in the Missouri River in 1984 (Brown and Coon 1991). Although Menn and Pitman (1986) found no evidence of reproduction in the Trinity River in 1984and 1985, Noble et al (1986 and Trimm et al (1989) contended that natural reproduction of grass carp had occurred within the Galveston watershed.…”

Section: Introductionmentioning

confidence: 99%

Grass Carp (Ctenopharyngodon idella) in the Trinity River, Texas

Elder

Murphy

1997

Journal of Freshwater Ecology

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Recent confirmation of grass carp spawning in the river systems entering Galveston Bay is a serious concern to many fisheries ecologists. Researchers suspect a portion of recent losses in submersed vegetation and marsh habitat in Galveston Bay may be due to the presence of grass carp. Grass carp captured in the Trinity River were examined to determine population structure, ploidy, fecundity, and diet. Fish captured were primarily diploids and represented a broad range of cohorts, providing strong evidence that naturally spawned grass carp are being recruited to adult sizes in the Trinity River. No evidence of submersed estuarine vegetation exclusive to Trinity Bay was found in the gut contents of grass carp examined.

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“…These grass carp have been found on occasion to have developed gonads. Because wild populations of diploid grass carp have been documented as far north as the central Missouri River (Brown and Coon 1991), some concern has been expressed regarding the ability of feral grass carp to establish breeding populations in the Chesapeake Bay watershed.…”

mentioning

confidence: 99%

Ploidy of Feral Grass Carp in the Chesapeake Bay Watershed

Schultz¹,

Steinkoenig²,

Brown³

2001

North American Journal of Fisheries Management

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We examined the ploidy of feral grass carp Ctenopharyngodon idella captured from open waterways of the Chesapeake Bay watershed. Using flow cytometry, we determined the ploidy of blood and gonads (when mature ovaries or testes were present) to elaborate upon several issues associated with stocking grass carp, namely, escapism, illegal stockings, and the reproductive potential of triploid grass carp. During a 3‐year period (1994–1997), ploidy was determined for 11 of 16 feral individuals, 2 of which were diploid (18%). In the survey, we detected gonadal development in one diploid female, three triploid females, and one triploid male. Flow cytometry analysis revealed multiple ploidy in the gonadal tissue of both sexes of triploids. This is the first examination of gonad ploidy in feral triploids, and we provide evidence that although some triploid grass carp may produce gametes, viable offspring would be produced only under extremely unlikely conditions.

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Grass Carp Larvae in the Lower Missouri River and Its Tributaries

Cited by 23 publications

References 0 publications

Biology and management of grass carp (Ctenopharyngodon idella, Cyprinidae) for vegetation control: a North American perspective

Biology and management of grass carp (Ctenopharyngodon idella, Cyprinidae) for vegetation control: a North American perspective

Grass Carp (Ctenopharyngodon idella) in the Trinity River, Texas

Ploidy of Feral Grass Carp in the Chesapeake Bay Watershed

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