Effects of Seasonal Variations, Thyroid and Steroid Hormones, and Carp Pituitary Extract on the Artificial Production of Channel Catfish Ictalurus punctatus× Blue Catfish I. furcatus Hybrids

. The primary objective was to compare thyroid hormones and levels of carp pituitary extract for the artificial production of female Ictalurus punctatus× male I. furcatus hybrid catfish. The effects of different carp pituitary extract dosage rates (5, 6, 9, and 10 mg/kg), carp pituitary extract (6 and 10 mg/kg) supplemented with the thyroid hormones thyroxine (T4) and triiodothyronine (T3), or pregnenolone (DHP) were determined for inducing ovulation of female channel catfish, fertilization of channel catfish eggs with male blue catfish sperm, and hatching rate of these embryos. Hormone treatments thyroxine and tri-iodothyronine with carp pituitary extract, carp pituitary extract alone, and pregnenolone with carp pituitary extract used to artificially produce hybrid catfish were not different in terms of ovulation rates, eggs/kg, fry/kg body weight of female channel catfish, fertilization rates, or hatching rates (P > 0.05). These findings suggest that lower amounts of carp pituitary extract may be used to induce spawn of female channel catfish for production of channel-blue catfish hybrids and the addition of thyroid and steroid hormones is ineffective at the rates used in this study.

[1]  R. Dunham,et al.  Transcriptional activities in the pituitaries of channel catfish before and after induced ovulation by injection of carp pituitary extract as revealed by expressed sequence tag analysis. , 1998, Journal of molecular endocrinology.

[2]  R. Dunham,et al.  Gonadotropin alpha-subunit glycoprotein from channel catfish (Ictalurus punctatus) and its expression during hormone-induced ovulation. , 1997, Molecular marine biology and biotechnology.

[3]  R. Patiño.  Manipulations of the Reproductive System of Fishes by Means of Exogenous Chemicals , 1997 .

[4]  K. Tachihara,et al.  Improved Seed Production of Goldstriped Amberjack Seriola lalandi under Hatchery Conditions by Injection of Triiodothyronine (T3) to Broodstock Fish , 1997 .

[5]  J. D. Tan-Fermin,et al.  LHRHa and pimozide-induced spawning of Asian catfish Ciarias macrocephalus (Gunther) at different times during an annual reproductive cycle , 1997 .

[6]  P. Thomas,et al.  A receptor for the oocyte maturation-inducing hormone 17alpha,20beta,21-trihydroxy-4-pregnen-3-one on ovarian membranes of striped bass. , 1997, Biology of reproduction.

[7]  M. Islam,et al.  Production of hybrid vigor through cross breeding between Clarias batrachus Lin. and Clarias gariepinus Bur. , 1995 .

[8]  T. J. Lam.  Hormones and Egg/Larval Quality in Fish , 1994 .

[9]  U. Na-Nakorn,et al.  Suitable conditions for induction of gynogenesis in the catfish, Clarias macrocephalus, using sperm of Pangasius sutchi , 1993 .

[10]  L. Garg,et al.  Induced spawning of catfish, Heteropneustes fossilis (Bloch), using D-Lys6 salmon gonadotropin-releasing hormone analog , 1993 .

[11]  F. Piferrer,et al.  Effects of natural, synthetic, aromatizable, and nonaromatizable androgens in inducing male sex differentiation in genotypic female chinook salmon (Oncorhynchus tshawytscha). , 1993, General and comparative endocrinology.

[12]  T. J. Lam,et al.  Thyroxine injection of female rabbitfish (Siganus guttatus) broodstock: changes in thyroid hormone levels in plasma, eggs, and yolk-sac larvae, and its effect on larval growth and survival , 1993 .

[13]  B. A. Simco,et al.  Reproductive Performance of Pigmented and Albino Female Channel Catfish Induced to Spawn with HCG or Ovaprim , 1992 .

[14]  R. L. Busch,et al.  An Evaluation of a Leuteinizing Hormone‐Releasing Hormone Analog to Induce Spawning of Channel Catfish Ictalurus punctatus , 1990 .

[15]  P. Manickam,et al.  Induction of maturation and ovulation by pimozide-LHRH analogue treatment and resulting high quality egg production in the Asian catfish, Clarias batrachus (L.) , 1989 .

[16]  Christopher L. Brown,et al.  Maternal triiodothyronine injections cause increases in swimbladder inflation and survival rates in larval striped bass, Morone saxatilis , 1988 .

[17]  F. Billett,et al.  Oocyte Growth and Maturation , 1988, Springer US.

[18]  S. Miwa,et al.  Effects of various doses of thyroxine and triiodothyronine on the metamorphosis of flounder (Paralichthys olivaceus). , 1987, General and comparative endocrinology.

[19]  P. Thomas,et al.  Identification of 17α,20β,21-trihydroxy-4-pregnen-3-one as the major ovarian steroid produced by the teleost Micropogonias undulatus during final oocyte maturation , 1986, Steroids.

[20]  S. Miwa,et al.  Thyroid hormone induces metamorphosis of flounder larvae. , 1985, General and comparative endocrinology.

[21]  T. J. Lam,et al.  Effect of thyroxine on growth and development in post-yolk-sac larvae of milkfish, Chanos chanos , 1985 .

[22]  Y. Nagahama,et al.  Identification of maturation-inducing steroid in a teleost, the amago salmon (Oncorhynchus rhodurus). , 1985, Developmental biology.

[23]  T. J. Lam,et al.  Effects of salinity and thyroxine on larval survival, growth and development in the carp, Cyprinus carpio , 1985 .

[24]  D. Higgs,et al.  Diet composition as a factor in the anabolic efficacy of 3,5,3′-triiodo-L-thyronine administered orally to steelhead trout (Salmo gairdneri) , 1984 .

[25]  F. Goetz,et al.  The in vitro effects of phosphodiesterase inhibitors on 17α,20β-dihydroxy-4-pregnen-3-one induced germinal vesicle breakdown in brook trout (Salvelinus Fontinalis) oocytes , 1984 .

[26]  R. Dunham,et al.  Response to selection and realized heritability for body weight in three strains of channel catfish, Ictalurus punctatus, grown in earthen ponds , 1983 .

[27]  T. J. Lam.  Thyroxine enhances larval development and survival in Sarotherodon (Tilapia) mossambicus Ruppell , 1980 .

[28]  J. Eales,et al.  Influence of orally administered L-thyroxine or 3,5,3′-triiodo-L-thyronine on growth, food consumption, and food conversion of underyearling coho salmon (Oncorhynchus kisutch) , 1979 .

[29]  T. Dettlaff,et al.  Differential sensitivity of cells of follicular epithelium and oocytes in the stellate sturgeon to unfavorable conditions, and correlating influence of triiodothyronine. , 1979, General and comparative endocrinology.

[30]  J. R. McBride,et al.  Influence of Bovine Growth Hormone and L-Thyroxine on Growth, Muscle Composition, and Histological Structure of the Gonads, Thyroid, Pancreas, and Pituitary of Coho Salmon (Oncorhynchus kisutch) , 1976 .

[31]  H. Kleerekoper,et al.  The Locomotor Responses of Male Ictalurus punctatus, the Channel Catfish, to a Pheromone Released by the Ripe Female of the Species , 1972 .

[32]  J. J. Giudice.  Growth of a Blue X Channel Catfish Hybrid as Compared to its Parent Species , 1966 .

[33]  W. R. Meehan.  Infection in a Juvenile Coho Salmon Resulting from Ingestion of a Threespine Stickleback , 1964 .

[34]  S. Dales,et al.  EFFECTS OF THYROXINE AND THIOUREA ON THE EARLY DEVELOPMENT OF CHUM SALMON (ONCORHYNCHUS KETA) , 1954 .