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Individual-based model of the reproduction cycle of Moina macrocopa (Crustacea: Cladocera) / E. S. Zadereev [et al.] // Ecological Modelling. - 2003. - Vol. 162, Is. 1-2. - P15-31, DOI 10.1016/S0304-3800(02)00348-4 . - ISSN 0304-3800
Кл.слова (ненормированные):
Change of reproduction mode -- Cladocera -- Individual-based model -- Metabolic by-products -- ecological modeling -- individual-based model -- reproductive cycle -- Animalia -- Cladocera -- Crustacea -- Moina macrocopa
Аннотация: An individual-based model of cyclic development of Cladocera populations was developed on the basis of experimental data. The model takes into account the following processes describing the development of an individual animal: maturation, transition into other reproductive classes, selection of the reproduction mode (parthenogenetic or gamogenetic), release of parthenogenetic progeny and death. The model assumes that switching from asexual to sexual reproduction is controlled by the concentration of food and metabolic by-products of the animal population. Verification of the model by independent experiments demonstrated that (1) during population growth, metabolic by-products build up in the medium, and (2) the effect of metabolic by-products on gamogenesis induction depends on concentration. The hypothesis that the effect of regulating reproductive switching factors should synchronise the development of population with the change of environmental conditions in order to ensure production of the maximum number of diapausing eggs was tested. It is shown that combination of regulating reproductive switching factors maximises the production of diapausing eggs. В© 2002 Elsevier Science B.V. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Akademgorodok, 660036 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zadereev, E.S.; Prokopkin, I.G.; Gubanov, V.G.; Gubanov, M.V.

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Reproductive strategy of Beroe ovata (Ctenophora, Atentaculata, Beroida) - A new invader in the Black Sea [Text] / E. G. Arashkevich [et al.] // Oceanology. - 2001. - Vol. 41, Is. 1. - P. 111-115. - Cited References: 18 . - ISSN 0001-4370

РУБ Oceanography

Аннотация: Factors affecting the egg production of Beroe ovata were experimentally studied. Ctenophore clutch size increased with animal size and ranged from 40 eggs for small specimens to 5000-7000 eggs for individuals 80-120 mm long. The beginning of maturation was recorded for the ctenophores bigger than 30-35 mm. Clutch size was directly influenced by the amount of ingested food. Starving animals produced no eggs. No influence of temperature on the dutch size was indicated within the range 15-22 degreesC. Possible factors affecting the eggs viability which varied in the experiments from 20 to 80% are discussed. In the autumn of 1999, the spawning period was observed in September-October with a maximum at the beginning of October. Concentration of the larvae in the near-shore zone amounted to more than 400 ind. m(-2). Offshore, their amount decreased and in the central part of the sea they were not found.

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Держатели документа:
Russian Acad Sci, PP Shirshov Oceanol Inst, Moscow, Russia
Russian Acad Sci, PP Shirshov Oceanol Inst, So Branch, Gelendzhik, Russia
St Petersburg State Univ, Fac Biol, St Petersburg, Russia
Russian Acad Sci, Inst Biophys, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Arashkevich, E.G.; Anokhina, L.L.; Vostokov, S.V.; Dritz, A.V.; Lukasheva, T.A.; Luppova, N.E.; Musaeva, E.I.; Tolomeev, A.N.

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Individual-based model of the reproduction cycle of Moina macrocopa (Crustacea : Cladocera) [Text] / E. S. Zadereev [et al.] // Ecol. Model. - 2003. - Vol. 162, Is. 01.02.2013. - P. 15-31, DOI 10.1016/S0304-3800(02)00348-4. - Cited References: 25 . - ISSN 0304-3800

РУБ Ecology
Рубрики:
POPULATION
   ZOOPLANKTON
   FEMALES
   WATER
Кл.слова (ненормированные):
individual-based model -- Cladocera -- change of reproduction mode -- metabolic by-products
Аннотация: An individual-based model of cyclic development of Cladocera populations was developed on the basis of experimental data. The model takes into account the following processes describing the development of an individual animal: maturation, transition into other reproductive classes, selection of the reproduction mode (parthenogenetic or gamogenetic), release of parthenogenetic progeny and death. The model assumes that switching from asexual to sexual reproduction is controlled by the concentration of food and metabolic by-products of the animal population. Verification of the model by independent experiments demonstrated that (1) during population growth, metabolic by-products build up in the medium, and (2) the effect of metabolic by-products on gamogenesis induction depends on concentration. The hypothesis that the effect of regulating reproductive switching factors should synchronise the development of population with the change of environmental conditions in order to ensure production of the maximum number of diapausing eggs was tested. It is shown that combination of regulating reproductive switching factors maximises the production of diapausing eggs. (C) 2002 Elsevier Science B.V. All rights reserved.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zadereev, E.S.; Prokopkin, I.G.; Gubanov, V.G.; Gubanov, M.V.

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Ecological Forms of Black Sea Brown Trout (Salmo trutta labrax) in the Mzymta River as Manifestation of Ontogenetic Plasticity / A. A. Makhrov [et al.] // Russ. J. Dev. Biol. - 2018. - Vol. 49, Is. 2. - P117-127, DOI 10.1134/S1062360418020054. - Cited References:77. - This study was supported by the Russian Scientific Foundation, project no. 16-14-10001. . - ISSN 1062-3604. - ISSN 1608-3326

РУБ Developmental Biology
Рубрики:
ATLANTIC SALMON
   POPULATIONS
   HISTORY
   L.
   MIGRATION
   SURVIVAL
Кл.слова (ненормированные):
Salmonidae -- brown trout -- trout -- ontogenesis -- migrations -- maturation -- phenotypic plasticity -- gonads -- smolts
Аннотация: Populations of brown trout in the Mzymta River and its tributaries include anadromous (mainly female) and resident (mainly males) fish. Some resident males in the basin of the Mzymty River attain sexual maturity at the age 1+, and resident females mature at the age 2+ or 3+. The maximum age of resident fish is 4+ in the samples studied. Migrations of anadromous brown trout to the sea occur at the ages 1+, 2+, or 3+. Future spawners spend from 1 to 4 years at feeding grounds in the sea. Smolts of the population are characterized by performing not only spring but also autumn migrations to the sea. One smolt specimen has been detected upstream from the dam in the river where spawners of anadromous brown trout do not migrate; this means that the capability for sea migrations persists long in the population represented only by resident specimens of brown trout. The diversity of life cycles and ecological forms in populations of brown trout is not lower than in populations of brown trout in Northern and Western Europe. The comparison of the data obtained with published data makes it possible to come to the conclusion about the high plasticity of ontogenesis of Black Sea brown trout.

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Держатели документа:
Russian Acad Sci, Severtsov Inst Ecol & Evolut, Moscow 119071, Russia.
Russian Acad Sci, Fed Res Ctr Krasnoyarsk Sci Ctr, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
St Petersburg State Univ, St Petersburg 199034, Russia.
Azov Res Inst Fisheries, Krasnodar Branch, Krasnodar 350000, Russia.
Moscow MV Lomonosov State Univ, Moscow 119991, Russia.
Kuban State Univ, Krasnodar 350040, Russia.

Доп.точки доступа:
Makhrov, A. A.; Artamonova, V. S.; Murza, I. G.; Pashkov, A. N.; Ponomareva, M. V.; Reshetnikov, S. I.; Christoforov, O. L.; Russian Scientific Foundation [16-14-10001]

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Gonadal Development of Diploid and Triploid Pink Salmon (Oncorhynchus gorbuscha) from the White Sea / V. S. Artamonova [et al.] // Contemp. Probl. Ecol. - 2018. - Vol. 11, Is. 3. - P331-341, DOI 10.1134/S1995425518030034. - Cited References:64. - We are grateful to V. E. Gilepp, A. G. Laidinen, and A. D. Posin for their support in organizing the experiment and to E. D. Pavlov for help in conducting a histological analysis. This work was supported by the Russian Science Foundation, project no. 16-14-10001. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
PACIFIC SALMON
MORPHOBIOLOGICAL CHARACTERS
OUTBREEDING DEPRESSION
Кл.слова (ненормированные):
delayed maturation -- intersexes -- sex -- triploid -- gonads -- thermal shock -- pink salmon -- Oncorhynchus gorbuscha
Аннотация: Only males (fully mature and failing to mature) and intersexes have been found among triploids of pink salmon. Possible mechanisms of genetic sex determination in pink salmon are discussed. The possibility of using triploids to regulate sizes of artificial pink salmon populations is also discussed. Triploids of pink salmon are deemed inefficient to use in aquaculture. Delayed maturation is observed in some diploid females reared in farming cages.

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Scopus
Держатели документа:
Russian Acad Sci, Severtsov Inst Ecol & Evolut, Moscow 119071, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.
Moscow MV Lomonosov State Univ, Dept Biol, Moscow 119991, Russia.
Vygskiy Fish Hatchery, Sosnovetz 186530, Republic Of Kar, Russia.

Доп.точки доступа:
Artamonova, V. S.; Ponomareva, M. V.; Ignatenko, V. V.; Makhrov, A. A.; Russian Science Foundation [16-14-10001]

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