Annual development cycle of gonads of Eurasian ruffe (<i>Gymnocephalus cernuus</i>L.) females from lower Odra River sections differing in the influence of cooling water

Domagała, Józef; Kirczuk, Lucyna; Pilecka-Rapacz, M.

doi:10.1080/02705060.2013.777855

Cited by 15 publications

(19 citation statements)

References 17 publications

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“…This was demonstrated by a rapid increase in the weight of the female bream gonads analysed in late March and early April, whereas the study by Lammens (1982) was conducted in May. The spent gonads of the investigated female bream contained oocytes not expelled during spawning that underwent atresia, which is typical and has also been observed in other fish species (Luk sjen_ e and Sved€ ang, 1997; Domagała et al, 2013). The histological analysis revealed that pre-vitellogenetic and vitellogenetic oocyte stages were similar to those in other investigations (Kopiejewska, 1989;Kopiejewska et al, 2004;Fulga et al, 2009).…”

Section: Discussionmentioning

confidence: 58%

Annual development cycle of gonads of bream (Abramis brama L. 1758) females from the lower Oder River sections influenced differently by the heated effluents from a power station

2015

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Summary Gonads of female bream from three locations with varied temperature‐influenced water from power plant cooling water effluents were analysed: (i) from the Oder River (above Gryfino, with no influence of the post‐cooling water effluents from the ‘Dolna Odra’ power plant, NW Poland), (ii) from Lake Dąbie, below the canal receiving the heated effluents from the power station, and (iii) from downstream the effluent canal. Histological analysis indicated that in ambient conditions, the spawning season began at the study sites at the end of April and lasted through May and part of June. The initiation of gonad restoration (beginning of vitellogenesis, stage 3) was observed at the end of July, both in the Oder River and Lake Dąbie, and lasted throughout September. The gonads were at stage 4 in males from October to April and, in a few females, to May. The annual cycle of gonad development was similar in the female bream from both sites. The microscopic images of the oocytes were in the previtellogenesis and vitellogenesis at the two sites. The maximum diameter of the oocytes from the Oder was 909.7 μm, while oocyte diameter of fish from Lake Dąbie was 1018.4 μm. Oocytes not expelled during spawning season (May to August) were seen to undergo atresia. Female gonads from the heated effluent canal did not show any anomalies and the oocytes from the few fish caught in the winter were similar to those from the breams in other locations. Adult bream avoided excessive temperatures in the power plant effluent canal in the spring and summer, whereas juveniles were found in great numbers. In the spring, no female bream with mature gonads were caught in the cooling water effluent canal.

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Section: Discussionmentioning

confidence: 58%

Annual development cycle of gonads of bream (Abramis brama L. 1758) females from the lower Oder River sections influenced differently by the heated effluents from a power station

2015

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“…Histological analysis was performed to determine the developmental stage of the blue bream gonads using the modified 6-grade scales proposed by Domagała et al (2013Domagała et al ( , 2015b (Table 1, Table 2). …”

Section: Histological Analysis Of Gonadmentioning

confidence: 99%

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Domagała¹,

Dziewulska²,

Kirczuk³

et al. 2016

Turk. J. Fish. Aquat. Sci.

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Histological studies of the blue bream (Ballerus ballerus L., 1758) (Actinopterygii, Cypriniformes, Cyprinidae) gonad maturation have not been conducted to date. The aim of this study was to analyse the annual gonad development cycle of the blue bream from the Oder River and Lake Dąbie in north-western Poland.The spawning period of the blue bream, a single-portion spawner, was short, lasted approximately two weeks and occurred in the first half of April in Lake Dąbie, and in the second half of April in the Oder River. The blue bream male gonads reached maturity stage IV before the winter and remained at this stage until early spring. The gonads contained cells at all spermatogenetic stages and the tubule lumen was filled with numerous spermatozoa. The males from Lake Dąbie finalized their spermatogenesis in April slightly faster than those from the Oder River. Some individuals had gonad filled with large amounts of spermatozoa even in May and June.

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“…• Determining their maturity (the modified 6 degree scale applied in Domagała et al (2013) The measurements were made to the nearest of 0.01 mm. The oocyte diameter was calculated from measurements of the longest and shortest diameters of the mid cross section of the oocyte (Hunter and Goldberg 1980).…”

Section: Methodsmentioning

confidence: 99%

Annual development of gonads of pumpkinseed, Lepomis gibbosus (Actinopterygii: Perciformes: Centrarchidae) from a heated-water discharge canal of a power plant in the lower stretch of the Oder River, Poland

Domagała¹,

Kirczuk²,

Dziewulska³

et al. 2014

Acta Ichthyol. Piscat

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Annual development cycle of gonads of Eurasian ruffe (Gymnocephalus cernuusL.) females from lower Odra River sections differing in the influence of cooling water

Cited by 15 publications

References 17 publications

Annual development cycle of gonads of bream (Abramis brama L. 1758) females from the lower Oder River sections influenced differently by the heated effluents from a power station

Annual development cycle of gonads of bream (Abramis brama L. 1758) females from the lower Oder River sections influenced differently by the heated effluents from a power station

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Annual development of gonads of pumpkinseed, Lepomis gibbosus (Actinopterygii: Perciformes: Centrarchidae) from a heated-water discharge canal of a power plant in the lower stretch of the Oder River, Poland

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