Population dynamics of Procambarus clarkii (Girard) and Procambarus acutus acutus (Girard) (Decapoda: Cambaridae) in commercial ponds

Romaire, Robert P.; Lutz, C. Greg

doi:10.1016/0044-8486(89)90151-8

Cited by 36 publications

(26 citation statements)

References 16 publications

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“…This occurrence is partially caused by the rapid removal of faster growing individuals from the early cohorts. However, succeeding cohorts may and usually do grow at a slower rate (Romaire and Lutz, 1989). I suggest that the principal cause of this reduced growth is depletion of the animal component of their food supply.…”

Section: Animal Material: Are Crayfish Best Classified As Obligamentioning

confidence: 97%

“…This supposedly enabled them to grow rapidly and enter the catch after reaching "legal" size of 75-mm carapace length (C.L). However, it was later discovered that the relatively high yields did not come from a single cohort but from recruitment of 2-3-4 successive cohorts produced in the same growing season (Huner, 1978;Momot and Romaire, 1983;Romaire and Lutz, 1989).…”

Section: Animal Material: Are Crayfish Best Classified As Obligamentioning

confidence: 99%

“…In poorly managed (food deficient, overcrowded) ponds crayfish "stunt" because they mature at sizes far below commercial size (Huner and Romaire, 1978). Over time mean size of the crayfish forming each succeeding cohort usually decreases (Huner and Romaire, 1978;Momot and Romaire, 1983;Romaire and Lutz, 1989). This occurrence is partially caused by the rapid removal of faster growing individuals from the early cohorts.…”

Section: Animal Material: Are Crayfish Best Classified As Obligamentioning

confidence: 99%

See 2 more Smart Citations

Redefining the role of crayfish in aquatic ecosystems

Momot

1995

Reviews in Fisheries Science

451

289

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Section: Animal Material: Are Crayfish Best Classified As Obligamentioning

confidence: 97%

Section: Animal Material: Are Crayfish Best Classified As Obligamentioning

confidence: 99%

Section: Animal Material: Are Crayfish Best Classified As Obligamentioning

confidence: 99%

See 1 more Smart Citation

Redefining the role of crayfish in aquatic ecosystems

Momot

1995

Reviews in Fisheries Science

451

289

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“…Hydrology is fundamental for the timing of release of the young and recruitment frequently occurs after water input into the system i.e. after dry periods (Romaire and Lutz, 1989;Alcorlo et al, 2008). Because water is limiting the system, crayfish can only reproduce and grow during a certain period and therefore the population adapts to these conditions.…”

Section: Population Size Structure and Recruitmentmentioning

confidence: 99%

Population dynamics of the invasive crayfish (Procambarus clarkiiGirard, 1852) at two marshes with differing hydroperiods

Anastácio

Leitão

Boavida

et al. 2009

Ann. Limnol. - Int. J. Lim.

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-The population dynamics of the red swamp crayfish (Procambarus clarkii Girard, 1852) was studied from May 2005 to May 2006 in a pond (PCD) subjected to drought between June and December and in a continuously flooded rice field drainage channel (PMG) located in the Tejo river basin, Portugal. The proportion of females in the population was not independent from the season and was negatively correlated with both female and male maturation status. Male and female maturation was synchronous but males remained in a reproductive form after recruitment while females reverted quickly to lower maturation indexes. At PCD and PMG, respectively 2 and 5 cohorts were detected by modal analysis. Large crayfish were abundant in spring, summer and early autumn and juveniles were abundant in autumn, especially at PCD. Crayfish density at PCD was lower than at PMG and mortality rate (Z) was 3.99 at PCD and 2.43 at PMG. The average lifespan of the crayfish populations was 91 days at PCD and 150 days at PMG. Our study indicated faster growth and larger maximum sizes at the site with the more stressed environment and lowest relative crayfish densities (PCD), suggesting that any exploitation or control strategies for these two populations should consider management of the hydroperiod and of maximum crayfish densities.

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“…Young-of-the-year (YOY) are not stocked as in most other pond culture systems but are produced by broodstock contained within the pond. The resulting population density in a given season is a function of the number and size of successfully spawning broodstock and the survival of the young (Romaire and Lutz 1989).…”

Section: Introductionmentioning

confidence: 99%

Reducing Population Density to Effect a Greater Production of Large Crawfish

McClain¹,

Romaire²

1996

Journal of Applied Aquaculture

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Three density. reduction methods were evaluated in earthen crawfish ponds to control overpopulation in order to mitigate density-related growth suppression and effect a greater production of large (> 22 g) crawfish. Treatments consisted of physical removal of crawfish with small-mesh-bottom traps, application of urea fertilizer with hydrated lime to create toxic levels of un-ionized ammonia, temporary draining of ponds to expose vulnerable crawfish to biological hazards, and a typical management approach (no density reduction) as a control. Density reduction measures were initiated in early February before harvesting began in late February. The temporary drain and urea applications were effective in significantly reducing crawfish population densities as indicated by dip net, baited trap, and unbaited entrapment samplings. Furthermore, forage depletion rates were significantly decreased in these two density-reduced treatments, indicating reduced grazing by lower crawfish numbers. The average size-at-harvest and proportions of large crawfish were greatest in the temporary drain and urea treatments. Mean .weights of harvested crawfish were 15.9, 14.8, 23.6, and 22.1 g for ,the control, physical-removal, urea application, and temporary drain treatments, respectively. In the control and physical-removal ueatments, only 18% and 10% of the harvested crawfish, respectively, were in the two largest size categories. In the urea application and temporary drain treatments, 68% and 61% of the crawfish, respectively, were in

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Population dynamics of Procambarus clarkii (Girard) and Procambarus acutus acutus (Girard) (Decapoda: Cambaridae) in commercial ponds

Cited by 36 publications

References 16 publications

Redefining the role of crayfish in aquatic ecosystems

Redefining the role of crayfish in aquatic ecosystems

Population dynamics of the invasive crayfish (Procambarus clarkiiGirard, 1852) at two marshes with differing hydroperiods

Reducing Population Density to Effect a Greater Production of Large Crawfish

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