Gametogenesis of pacific salmon. 2. Chum salmon Oncorhynchus keta
https://doi.org/10.26428/1606-9919-2023-203-852-870
EDN: FYXYWM
Abstract
All available information on gametogenesis of chum salmon Oncorhynchus keta cited in scientific literature is summarized. The phases of indifferent development and sex differentiation are overviewed, specific features of the testes and ovaries development are noted, forming of fecundity is analyzed.
About the Author
O. V. ZelennikovRussian Federation
Oleg V. Zelennikov, D.Biol., assistant professor
7/9, Universitetskaya Emb., Sankt-Peterburg, 199034
References
1. Andreeva, M.A., Experiments on hybridization of Pacific salmon, Rybn. Khoz., 1953, no. 11, pp. 42–43.
2. Barannikova, I.A., Dyubin, V.P., Boev, A.A., Bukovskaya, O.S., Vasil’eva, E.V., and Travkin, B.G., The role of hormonal actions in the regulation of maturation in female autumn chums, Oncorhynchus keta, Vopr. Ikhtiol., 1990, vol. 30, no. 4, pp. 660–667.
3. Barannikova, I.A., Dyubin, V.P., Bukovskaya, O.S., Rebrova, L.V., and Travkin, B.G., The gonadotropic function of the hypophysis and the dynamics of gonadotropin and sexual steroids in the blood of the Amur River autumn chum, Oncorhynchus keta, on completion of the sexual cycle, Vopr. Ikhtiol., 1989, vol. 29, no. 5, pp. 823–830.
4. Belyanina, T.N., On the fertility of summer Amur chum salmon, Scientific report higher schools, Biol. Sciences, 1963, no. 4, pp. 24–30.
5. Bushuev, V.P., Interspecific variations in the heat resistance of the sperm of some Pacific salmon (Genus Oncorhynchus), Vopr. Ikhtiol., 1971, vol. 11, no. 3, pp. 479–483.
6. Volobuev, V.V., About wintering of juvenile chum salmon in their native spawning reservoir, Tezisy dokl. 10 Vses. simp. “Biologicheskiye problemy Severa” (Proc. 10th All-Union Symp. “Biological problems of the North”), Magadan, 1983, part 2, p. 158.
7. Volobuyev, V.V. and Nikulin, O.A., Data of biology of Anadir Keta, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 1970, vol. 71, pp. 219–230.
8. Galkina, L.A., Geographical variability in the size of eggs of pink salmon and chum salmon (genus Oncorhynchus) in connection with issues of acclimatization, Tr. Murm. Morsk. Biol. Inst., 1965, vol. 9, no. 3, pp. 33−40.
9. Gorodovskaya, S.B. and Sushkevich, A.S., Gametogenesis of juvenile chum salmon during the periods of early sea and autumn migration in the Sea of Okhotsk and some ovary histomorphologic changes in 2014, Vestn. Kamchatskogo Gos. Tekh. Univ., 2017, no. 39, pp. 46–54.
10. Gorodovskay, S.B. and Sushkevich, A.S., The rates of the oogenesis of juvenile pacific salmon in the Sea of Okhotsk in the fall period in 2011–2013, Issled. Vodn. Biol. Resur. Kamchatki Sev.- Zapadn. Chasti Tikhogo Okeana, 2015, vol. 36, pp. 34–41. doi 10.15853/2072-8212.2015.36.34-41
11. Gorodovskay, S.B. and Sushkevich, A.S., The gonad formation rate in juvenile pacific salmon in the early marine period in the coastal waters of the Sea of Okhotsk, Issled. Vodn. Biol. Resur. Kamchatki Sev.-Zapadn. Chasti Tikhogo Okeana, 2021, vol. 62, pp. 26–37. doi 10.15853/2072-8212.2021.62.26-37
12. Gorodovskaya, S.В. and Shershneva, V.I., More accurate improvement of immature state criteria for chum and sockeye salmons, Issled. Vodn. Biol. Resur. Kamchatki Sev.-Zapadn. Chasti Tikhogo Okeana, 2007, vol. 9, pp. 122–130.
13. Goryainov, A.A., Lysenko, A.V., and Shatilina, T.A., Mature two-year-old (0.1) chum salmon from Peter the Great Bay (Primorsky Krai), in Byull. N 3 realizatsii “Kontseptsii dal’nevostochnoi basseinovoi programmy izucheniya tikhookeanskikh lososei” (Bull. No. 3 Implementation of “The Concept of the Far Eastern Basin Program for the Study of Pacific Salmon”), Vladivostok: TINRO-Tsentr, 2008, pp. 75–78.
14. Grachev, L.E., Variations in the number of ovocytes in chum salmon Oncorhynchus keta (Walb.), Vopr. Ikhtiol., 1971, vol. 11, no. 4, pp. 686–696.
15. Grachev, L.E., Some data of the fecundity of Pacific salmon, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 1968, vol. 64, pp. 43−51.
16. Gritsenko, O.F., Mikulin, A.E., Lyubaev, V.Ya., Pukova, N.V., and Novikov, A.V., Abnormal eggs in the ovaries of chum salmon, Ryb. khoz-vo. Ser. Vosproizvodstvo i pastbishchnoye vyrashchivaniye gidrobiontov (Fish. household. Ser. Reproduction and pasture cultivation of hydrobionts: analytical and abstract information), Moscow: VNIERKh, 2001, no. 1, pp. 37–51.
17. Dvinin, P.A., Salmon of South Sakhalin, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 1952, vol. 37, pp. 69−108.
18. Dolbenskaya, T.S., On the method of sex determination in hatchery juvenile chum salmon, in Tezisy dokl. 2-y naucho-prakt. konf. “Itogi issledovaniy po voprosam ratsional’nogo ispol’zovaniya i okhrany vodnykh, zemel’nykh i biologicheskikh resursov Sakhalina i Kuril’skikh ostrovov” (Proc. 2nd Sci.-Pract. Conf. “Results of research on the rational use and protection of water, land and biological resources of Sakhalin and the Kuril Islands”), Yuzhno-Sakhalinsk, 1984, pp. 126–127.
19. Dubin, V.P. and Bayunova, N.N., Study of the consequences of the condition of juvenile chum salmon Oncorhynchus keta, grown from eggs of females matured after hormonal stimulation, Vopr. Ikhtiol., 1992, vol. 32, no. 5, pp. 193–197.
20. Evseeva, I.A., Morphological deviations in the structure of internal organs in chum salmon and pink salmon of the river Arman (Tauyskaya Bay of the Sea of Okhotsk), in Sostoyanie rybokhozyaistvennykh issledovanii v basseine severnoi chasti Okhotskogo morya (The Status of Fisheries Research in the Northern Sea of Okhotsk), Magadan: MagadanNIRO, 2009, no. 3, pp. 80−87.
21. Elnikov, A.N. and Zelennikov, O.V., On state of commercial herd of chum salmon Oncorhynchus keta and forecasting its abundance at Iturup Island, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2023, vol. 203, no. 1, pp. 58–74. doi 10.26428/1606-9919-2023-203-58-74. EDN: QPTWBF.
22. Zavarina, L.О., and Gorodovskaya, S.B., Characterization of smoltifying chum salmon (Oncorhynchus keta) migrants and some of hystological parameters of their gonads in the Khailulya river system in 2002–2003 (north-east coast of Kamchatka), Issled. Vodn. Biol. Resur. Kamchatki Sev.-Zapadn. Chasti Tikhogo Okeana, 2011, vol. 22, pp. 63–67.
23. Zelennikov, O.V., Influence of early oogenesis processes on the development of inflammation of the system in fish, Extended Abstract of Doctoral (Biol.) Dissertation, Moscow: VNIRO, 2021.
24. Zelennikov, O.V., Gamethogenesis of pacific salmons. 1. Development of gonad in young chum salmon Oncorhynchus keta Walbaum under various temperature regimes, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2019, vol. 198, pp. 209–220. doi 10.26428/1606-9919-2019-198-209-220
25. Zelennikov, O.V., Gametogenesis of the pacific salmon. 3. Comparative analysis of the state of gonads in juvenile pacific salmon due to fertility formation, Trudy ZIN RAN, 2019, vol. 323, no. 4, pp. 429–441. doi 10.31610/trudyzin/2019.323.4.429
26. Zelennikov, O.V., Comparative analysis of the state of ovaries in juvenile pacific salmon as related to the problem of monocyclicity formation, Vopr. Ikhtiol., 2003, vol. 43, no. 4, pp. 490–498.
27. Zelennikov, O.V., Kuznetsov, Yu.K., Mosyagina, M.V., and Golod, V.M., Gametogenesis of Caspian trout during the period of first puberty during the creation of broodstock, Tr. Vses. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2019, vol. 177, pp. 28–39.
28. Zelennikov, O.V., Pogodin, V.P., and Otstavnaya, E.G., The distribution of juvenile pacific salmon and associated fish species in Lake Sopochnoye, Iturup Island, Russ. J. Mar. Biol., 2016, vol. 42, no. 2, pp. 190–192. doi 10.1134/S1063074016020139
29. Ivankov, V.N., Hybrids of autumn chum salmon Oncorhynchus keta (Walb.) with coho salmon O. kisutch (Walb.), Vopr. Ikhtiol., 1973, vol. 13, no. 1, pp. 175–176.
30. Ivankov, V.N., Reproduktivnaya biologiya ryb (Reproductive biology of fish), Vladivostok: Dal’nevost. Gos. Univ., 2001.
31. Ivankov, V.N. and Andreev, V.L., The fecundity among Oncorhynchus, Vopr. Ikhtiol., 1969, vol. 9, no. 1, pp. 80−89.
32. Ivanova, S.A., Histological study of the gonads of pink salmon and summer chum salmon, Vopr. Ikhtiol., 1956, vol. 6, pp. 96–99.
33. Ievleva, M.Ya., Histological structure of salmon gonads during sea migrations, in Lososevoye khozyaystvo Dal’nego Vostoka (Salmon farming in the Far East), Moscow: Nauka, 1964, pp. 127–141.
34. Kaev, A.M., To assess the sexual maturity of salmon of the genus Oncorhynchus in the Kuril waters of the Pacific Ocean, Vopr. Ikhtiol., 2001, vol. 41, no. 3, pp. 368−373.
35. Kaev, A.M., On the cause of great diversity of chum salmon (Oncorhynchus keta) by the stage of sexual maturity during migration to the Okhotsk Sea, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2003, vol. 132, pp. 230–244.
36. Kaev, A.M. and Kaeva V.E., Variability of fecuntidy and egg sizes in the chum Oncorhynchus keta (Walbaum) and pink salmon Oncorhynchus gorbuscha (Walbaum) in relation to size-age structure of the spawning population, Vopr. Ikhtiol., 1986, vol. 26, no. 6, pp. 955–964.
37. Kaev, A.M. and Romasenko, L.V., Morpho-biological features of the river and lake forms of chum salmon Oncorhynchus keta (Salmonidae) on the southern Kuril Islands, J. Ichthyol., 2010, vol. 50, no. 4, pp. 285−294.
38. Kamyshnaya, M.S., Hybrids of chum salmon and pink salmon in the rivers of the North, Rybn. Khoz., 1963, no. 4, pp. 24−26.
39. Klokov, V.K., About the bloom of chum salmon populations on the northern coast of the Sea of Okhotsk, Tr. Vses. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 1975, vol. 106, pp. 85–96.
40. Kovtun, A.A., On the formation of fertility of chum salmon Oncorhynchus keta (Walbaum) on the southwestern coast of Sakhalin, in Tezisy dokl. II naucho-prakt. konf. «Itogi issledovaniy po voprosam ratsional’nogo ispol’zovaniya i okhrany biologicheskikh resursov Sakhalina i Kuril’skikh ostrovov» (Proc. II Sci.-Pract. Conf. “Results of research on the rational use and protection of biological resources of Sakhalin and the Kuril Islands”), 1984, pp. 117–119.
41. Kolomytsev, V.S., Lapshina, A.E., and Zelennikov, O.V., The condition of ovaries in hatcheryreared juvenile summer- and fall-run chum salmon, Oncorhynchus keta (Walbaum, 1792), in Sakhalin Oblast, Russ. J. Mar. Biol., 2018, vol. 44, no. 1, pp. 36–40.
42. Kondratyev, A.K., Functional morphology of pre-vitelligenous oocytes in the Siberian sterlet Acipenser ruthenus marsilii Brandt at different periods of the annual biological cycle, Vopr. Ikhtiol., 1977, vol. 17, no. 5, pp. 912–921.
43. Krykhtin, M.L., Capture of two-year-old (1+) summer chum salmon Oncorhynhus keta (Walbaum) in the Amur estuary, Vopr. Ikhtiol., 1962, vol. 2, no. 3, pp. 556–557.
44. Kusnetzow, I.I., Some observations on the spawning of the Amur and Kamchatka salmons, Izv. Tikhookean. Nauchno-Promysl. Stn., 1928, vol. 2, no. 3.
45. Kuznetsov, Ju.K. and Mosyagina, M.V., The peculiarities in gametogenesis of males of the paliya (Sahelinus alpinus complex) in conditions of specialized fish farming, Vestn. S.-Peterb. Univ., Ser. 3: Biol., 2009, vol. 3, pp. 58–68.
46. Kuznetsov, Yu.K., Mosyagina, M.V., and Naseka, A.M., On the hatching of the oocyte pool in mono- and polycyclic salmonids, Vestn. S.-Peterb. Univ., Ser. 3: Biol., 1997, vol. 3, pp. 8–30.
47. Kulikova, N.I. and Nikolaeva, E.T., Morphological Features of the Basic Stocks of Kamchatka Chum Salmon, Izv. Tikhookean.Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 1972, vol. 82, pp. 117–123.
48. Landyshevskaya, A.E., Qualitative composition of the descending young of Oncorhynchus gorbuscha (Walbaum) and Oncorhynchus keta (Walbaum) of the Sakhalin rivers, Vopr. Ikhtiol., 1967, vol. 7, no. 4, pp. 640–646.
49. Lukina, N.A., Svimonishvili, T.N., and Gorodilov, Yu.N., Gametogenesis in chum salmon Oncorhynchus keta (Walb.) during the embryonic-larval period and during the growing of juveniles in different constant temperatures, Sb. Nauchn. Tr. — Gos. Nauchno-Issled. Inst. Ozern. Rechn. Rybn. Khoz., 1988, vol. 276, pp. 80–93.
50. Magomedov, G.M., Shikhshabekov, M.M., and Ten, B.V., Development and growth of germ cells of autumn chum salmon Oncorhynchus keta (Walbaum) in the Caspian Basin, Vopr. Ikhtiol., 1979, vol. 19, no. 5, pp. 949–952.
51. Mikodina, E.V., Mikulin,A.E., and Mikulina, Yu.A., Abnormal eggs in pacific salmon females at Sakhalin hatcheries: biotechnical, technological and legislative (norms) problems, Rybn. Khoz., 2007, no. 1, pp. 61–63.
52. Mikulin, A.E. and Lyubaev, V.Ya., Features of the structure of the ovaries of Far Eastern salmon and issues of their evolution, Tr. Vseross. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2010, vol. 148, pp. 47–57.
53. Mikulina, Yu.A., Study of abnormal oocytes in chum and pink salmon in relationship with their artificial reproduction, Extended Abstract of Cand. Sci. (Biol.) Dissertation, Moscow: Mosk. Gos. Univ. Tekhnol. Upr., 2007.
54. Mosyagina, M.V. and Zelennikov, O.V., On the role of steroid-secreting cells in the regulation of gonad development in juvenile Pacific salmon, J. Ichthyol., 2006, vol. 46, no. 3, pp. 265–270. doi 10.1134/S0032945206030064
55. Mosyagina, M.V., and Kuznetsov, Yu.K., Histological study of the ovaries of juvenile chum salmon Oncorhynchus keta (Walbaum) from the rivers of. Iturup, in Problemy nadezhnosti funktsionirovaniya reproduktivnoy sistemy u ryb (Problems of reliable functioning of the reproductive system in fish), Tr. Biolog. nauchn.-issled.kiy institut, St. Petersburg: S.-Peterb. Gos. Univ., 1997, pp. 18–28.
56. Murza, I.G., Rate of sexual maturation of brown trout in the Baltic Sea basin, Sb. Nauchn. Tr. — Gos. Nauchno-Issled. Inst. Ozern. Rechn. Rybn. Khoz., 1985, vol. 228, pp. 136–162.
57. Panasenko, N.M., State of the reproductive system and potential fertility of juvenile autumn chum salmon during migration to the Amur riverbed, in Tez. dokl. 2-y Vsesoz. konf. «Voprosy rannego ontogeneza ryb» (Abstract report 2nd Vsesoz. conf. “Issues of early ontogenesis of fish”), Kiev, 1978, pp. 85–86.
58. Persov, G.M., Differentsirovka pola u ryb (Sex Differentiation in Fish), Leningrad: Leningrad. Gos. Univ., 1975.
59. Persov, G.M., Early period of gametogenesis in anadromous salmon, Tr. Murm. Morsk.Biol. Inst., 1966, vol. 12, no. 16, pp. 7–44.
60. Persov, G.M., Early period of gametogenesis in anadromous salmon, Tr. Murm. Morsk.Biol. Inst., 1965, vol. 9, no. 13, pp. 95–105.
61. Pukova, N.V., Features of the structure and development of the reproductive system in the chum salmon Oncorhynchus кета (Walbaum) during the life cycle, Extended Abstract of Cand. Sci. (Biol.) Dissertation, Moscow: VNIRO, 2002.
62. Pukova, N.V., Mikodina, E.V., Korolev, A.L., and Novikov, A.V., Polymorphism of testes in Far Eastern salmon p. Oncorhynchus, Tr. Vseross. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2002, vol. 141, pp. 152–166.
63. Roslyy, Yu.S., On the structure of biological groups in Amur chum salmon, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 1967, vol. 61, pp. 162–172.
64. Sedova, M.A., Samarskii, V.G., and Pavlov, E.D., State of gonads in hatchery-reared juveniles of chum salmon (Oncorhynchus keta) depending on the timing of its feeding, in Chteniya pamyati Vladimira Yakovlevicha Levanidova (Vladimir Yakovlevich Levanidov’s Biennial Memorial Meetings), Vladivostok: Dal’nauka, 2008, vol. 4, pp. 339–345.
65. Smirnov, A.I., Biologiya, razmnozheniye i razvitiye tikhookeanskikh lososei (Biology, Reproduction, and Development of Pacific Salmon), Moscow: Mosk. Gos. Univ., 1975.
66. Smirnov, A.I., Production of sperm by the Pacific Ocean Oncorhynchus, Vopr. Ikhthyol., 1963, vol. 3, no. 1, pp. 84−98.
67. Khorevin, L.D., Changes in fecundity of chum salmon in southwest Sakhalin as a result of artificial culture, Sov. J. Mar. Biol., 1990, vol. 16, no. 1, pp. 51–57.
68. Khorevin, L.D., Production and qualitative characteristics of sperm in the autumn chum, Onchorhynchus keta, from the Kalininka River (Sakhalin), Vopr. Ikhthyol., 1987, vol. 27, no. 6, pp. 956−961.
69. Shvydkiy, G.V., Dynamics of physiological parameters of chum salmon Oncorhynchus keta during the process of generative growth, Vopr. Ikhtiol., 2000, vol. 40, no. 3, pp. 418−420.
70. Shershneva, V.I. and Gorodovskaya, S.B., Distribution of energetic substances in salmon bodies during anadromous migrations, Issled. Vodn. Biol. Resur. Kamchatki i Sev.-Zapadn. Chasti Tikhogo Okeana, 2010, vol. 17, pp. 66–72.
71. Shirokov, D.A., Pukova, N.V., Mikodina, E.V., and Storozhuk, N.G., State of gonads and microelement composition of the body of juvenile chum salmon from the eastern shelf of Sakhalin, in Problemy reproduktsii i rannego ontogeneza morskikh gidrobiontov (Problems of reproduction and early ontogenesis of marine aquatic organisms), Murmansk, 2004, pp. 137–140.
72. Yaroslavtseva, L.M., Sergeeva, E.P., Chaga, I.L., and Khorevina, N.B., Motility of spermatozoa of chum salmon in the water from different rivers of Sakhalin, Russ. J. Mar. Biol., 1986, no. 5, pp. 34–38.
73. Beacham, T.D., Fecundity of coho salmon (Oncorhynchus kisutch) and chum salmon (O. keta) in the northeast Pacific Ocean, Can. J. Zool., 1982, vol. 60, pp. 1463–1469.
74. Hikita, T. and Yokohira, Y., Biological study on hybrids of the salmonid fishes: a note of hybrids between chum (Oncorhynchus keta) and pink salmon (Oncorhynchus gorbuscha), Sci. Rep. Hokkaido Salmon Hatchery, 1964, vol. 18, pp. 57−65. (In Japanese with English summary)
75. Hiroi, O. and Yamamoto, K., Studies on the maturation of salmonid fishes. Changes in the testes of the chum salmon (Oncorhynchus keta) during anadromous migration, Bull. Fac. Fish. Hokkaido Univ., 1968, vol. 19, no. 3, pp. 173−184.
76. Hitron, J.W. and Bonham, K., Hermaphroditism in a chum salmon, Oncorhynchus keta, Copeia, 1977, no. 3, pp. 591−592.
77. Honma, Y. and Chiba, A., Another case of synchronous (balanced) hermaphroditism found in a chum salmon, Oncorhynchus keta (Walbaum), from the Sea of Japan, Rep. Sado Mar. Biol. Stn. Niigata Univ., 1985, no. 15, pp. 27–30.
78. Kitahashi, T., Ando H., Ban M., Ueda, H., and Urano, A., Changes in the Levels of Gonadotropin Subunit mRNAs in the Pituitary of Pre-Spawning Chum Salmon, Zool. Sci., 1998, vol. 15, no. 5, pp. 753–760.
79. Kobayashi, H., Biological study of hybrids of the salmonid fishes. Cytological observation of fertilization in the cross between chum salmon and pink salmon, Sci. Rep. Hokkaido Salmon Hatchery, 1964, vol. 18, pp. 67−71. (In Japanese with English summary)
80. Morita, K., Morita, S.H., Fukuwaka, M., and Hiroyuki, M., Rule of age and size at maturity of chum salmon (Oncorhynchus keta): Implications of recent trends among Oncorhynchus spp., Can. J. Fish. Aquat. Sci., 2005, vol. 62, no. 12, pp. 2752−2759. doi 10.1139/f05-182
81. Nakatsukasa, Y., An example of the hermaphroditic gonad found in Oncorhynchus keta (Walbaum), Japan J. Ichthyol., 1965, vol. 13, no. 1/3, pp. 59–63.
82. Onuma, T.A., Sato, S., Katsumata, H., Makino, K., Hu, W., Jodo, A., Davis, N.D, Dickey, J., Ban, M., Ando, A., Fukuwaka, M., Azumaya, T., Swanson, P., and Urano, A., Activity of the pituitary — gonadal axis is increased prior to the onset of spawning migration of chum salmon, J. Exp. Biol., 2009, vol. 212, no. 1, pp. 56−70.
83. Robertson, J.G., Sex differentiation in the Pacific salmon Oncorhynchus keta (Walbaum), Can. J. Zool., 1953, vol. 31, no. 3, pp. 73−79. doi 10.1139/z53-007
84. Salo, E.O., Life history of chum salmon (Oncorhynchus keta), Pacific Salmon Life Histories, Groot, C. and Margolis, L., eds., Vancouver: UBC Press, 1991, pp. 231–310.
85. Simon, R.C. and Noble, R.E., Hybridization in Oncorhynchus (Salmonidae). I. Viability and inheritance in articial crosses of chum and pink salmon, Trans. Amer. Fish. Soc., 1968, vol. 97, pp. 109−118.
86. Sufi, G.B., Mori, K., and Sato, R., Histochemical study of dehydrogenases related to steroidogenesis in the tissues of the fry and juvenile of chum salmon Oncorhynchus keta, Tohoku J. Agric. Res., 1978, vol. 29, no. 1, pp. 44–61.
87. Takagi, K., The seasonal change of gonad weight of sockeye and chum salmon in the North Pacific Ocean, especially with reference to mature and immature fish, Bull. Hokkaido Reg. Fish. Res. Lab., 1961, vol. 23, pp. 17–34.
88. Zhivotovsky, L.A., Tochilina, T.G., Shaikhaev, E.G., Pogodin, V.P., Malinina, T.V., and Gharrett, A.J., Hybrids between chum Oncorhynchus keta and pink Oncorhynchus gorbuscha salmon: age, growth and morphology and effects on salmon production, J. Fish Bio., 2016, vol. 89, no. 4, pp. 2098−2106. doi 10.1111/jfb.13118
89. Zhukova, K. and Ponomarev, S.S., Histological observation of hermaphroditism of chum salmon Oncorhynchus keta (Walbaum, 1792), in PICES-2017. Annual Meeting: Environmental Changes in the North Pacific and Impact on Biological, Vladivostok, Russia, 2017, p. 155.
Review
For citations:
Zelennikov O.V. Gametogenesis of pacific salmon. 2. Chum salmon Oncorhynchus keta. Izvestiya TINRO. 2023;203(4):852-870. (In Russ.) https://doi.org/10.26428/1606-9919-2023-203-852-870. EDN: FYXYWM