The Difference in Growth of Male and Female Channel Catfish in Hatchery Ponds

Beaver, John A.; Sneed, Kermit E.; Dupree, H.K.

doi:10.1577/1548-8640(1966)28[47:tdigom]2.0.co;2

Cited by 18 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Culture of all-male populations of channel catfish, Ictalum punctatus, could have a significant economic impact on commercial aquaculture. In ponds stocked with mixed sexes, male channel catfish grow faster than females (Beaver et al 1966;Simco et al 1989). Average weights of channel catfish in all-male ponds are 10% higher than in mixed-sex ponds and 15% higher than in all-female ponds (Goudie et al 1994).…”

mentioning

confidence: 93%

Masculinization of Channel Catfish Ictalurus punctatus by Oral Administration of Trenbolone Acetate

Galvez

Mazik

Phelps

et al. 1995

J World Aquaculture Soc

View full text Add to dashboard Cite

All‐male populations of channel catfish, Ictalurus punelatus, were produced by feeding a diet containing trenbolone acetate to swim‐up fry for 60 d. This hormone was effective in producing 100% males at doses of 50 to 150 mg/kg of diet. Fish that received 0 or 1 mg/kg of diet did not differ from the expected 1:1 sex ratio. Survival of control fish and fish fed diets containing trenbolone acetate were similar (P > 0.05) at the end of the treatment period and after a 60‐d grow‐out period. Our results represent the first report of successful masculinization of channel catfish with a synthetic anabolic androgenic steroid.

show abstract

mentioning

confidence: 93%

Masculinization of Channel Catfish Ictalurus punctatus by Oral Administration of Trenbolone Acetate

Galvez

Mazik

Phelps

et al. 1995

J World Aquaculture Soc

View full text Add to dashboard Cite

show abstract

“…These data suggest that sex genotype and sex phenotype both contribute some of the observed differences in male sex bias for growth. Many papers document the larger size of male channel catfish in mixed-sex ponds (Beaver et al 1966;El-Ibary et al 1976;Brooks et al 1982;Gjedrem 1983;Dunham et al 1985). Simco et al (1989) showed that sex did not influence the growth of fish weighing less than 50 g, but that sex had an increasing influence with increasing age up to 26 months.…”

Section: Discussionmentioning

confidence: 99%

“…The aquaculture of monosex fish can result in increased growth and size, suppression of undesired reproduction, and the prevention of early stunting as a result of precocious maturation (Craig 1977;Johnstone et al 1978;Malison et al 1985;Scott et al 1989). Male channel catfish Ictalurus punctatus grow larger than females in mixed-sex culture (Beaver et al 1966;Brooks et al 1982;Dunham et al 1985). Size differences due to sex begin early in life, increase with age, and vary with family (Simco et al 1989).…”

mentioning

confidence: 99%

Sex Genotype and Sex Phenotype Contribute to Growth Differences between Male and Female Channel Catfish

Davis¹,

Goudie²,

Simco

2007

N American J Aquac

View full text Add to dashboard Cite

Channel catfish Ictalurus punctatus have an XX female‐XY male genotypic system of sex determination, and male channel catfish grow faster than females. Through selective breeding and appropriately timed hormone administration, we have produced phenotypic male channel catfish with a YY sex genotype and female channel catfish with an XY or YY sex genotype. In this study, we evaluated the relative role of sex genotype and sex phenotype in regulating sexually dimorphic growth in this important aquaculture species. Ten families of genotypic XY male fish were produced by matings of normal XX female fish with YY male fish, and females were produced by hormonal feminization of a subsample from each family. The growth rate and body composition of sibling males and females in ponds where the sexes were maintained together were compared with those in ponds where the sexes were maintained separately. Generally, phenotypic males had higher body weight (15.25% and 11.36% when the sexes were together or separated, respectively), standard length (3.28% and 2.24%, respectively), and condition factor (2.94 and 2.65, respectively), while phenotypic females had higher liposomatic index (7.11% and 13.69%, respectively) and dress‐out percentage (0.91% and 1.06%, respectively). Statistical differences between the phenotypic sexes were not as consistent as observed in previous studies with normal males and females because growth and body composition differences were enhanced when the sexes were maintained together; however, monosex culture restrained these differences. These results demonstrate that sex genotype and sex phenotype both contribute to the male growth advantage in channel catfish and provide further evidence that monosex male culture would produce an economic gain of about 5% for the industry compared with conventional mixed‐sex culture.

show abstract

“…For example, males grow faster than females in channel catfish, Ictalurus punctatus (Beaver et al, 1966), yellow catfish, Pelteobagrus fulvidraco (Liu et al, 2013), and tilapia, Oreochromis mossambicus (Hickling, 1963;Mair et al, 1995). In many ornamental fish species, males have higher market values than females because males usually have more attractive external morphology (Treves-Brown, 2000).…”

Section: Introductionmentioning

confidence: 99%

Successful production of functional Y eggs derived from spermatogonia transplanted into female recipients and subsequent production of YY supermales in rainbow trout, Oncorhynchus mykiss

et al. 2015

View full text Add to dashboard Cite

The Difference in Growth of Male and Female Channel Catfish in Hatchery Ponds

Cited by 18 publications

References 0 publications

Masculinization of Channel Catfish Ictalurus punctatus by Oral Administration of Trenbolone Acetate

Masculinization of Channel Catfish Ictalurus punctatus by Oral Administration of Trenbolone Acetate

Sex Genotype and Sex Phenotype Contribute to Growth Differences between Male and Female Channel Catfish

Successful production of functional Y eggs derived from spermatogonia transplanted into female recipients and subsequent production of YY supermales in rainbow trout, Oncorhynchus mykiss

Contact Info

Product

Resources

About