Growth pattern of flounder, Platichthys flesus [L.] from the Gulf of Gdansk [Southern Baltic Sea]

• Autorzy: Antoszek A , Krzykawski S.
• Języki publikacji: EN

Abstrakty

EN

Background. It is a common perception that growth rates of many commercially-exploited fish species have been well known. It is evident, however, that in certain cases, especially in brackish water environments those growth rates may be diversified. Therefore, determination of growth patterns of various stocks of the same fish, living in different salinity regimes may be important for efficient fisheries management, especially fish-quotas negotiations. The aim of the presently reported study was to estimate the growth rates of length and weight of flounder Platichthys flesus (L.) from the Gulf of Gdańsk and to compare them with those from the Pomeranian Bay and Słupsk Furrow areas. Materials and Methods. A total of 200 fish, collected in the coastal waters of Hel in 1997, was analysed. The fish were caught using flatfish gill nets. The age of flounder was determined from otoliths, whereas measurements of the annual ring increments were made using a dissecting microscope with reflected light over a dark background. The microscope was outfitted with a camera and linked to computer. The images were processed using an image-processing software “Multiscan”. The method of Vovk was employed to study the growth rate of flounder, both for the whole sample and in relation to both sexes. The calculation of the growth rates of length and weight were aided by the equations of von Bertalanffy. Results. The total length of the flounder studied ranged from 4.3 to 46.0 cm for ages from one through ten. The mean length reached 23.7 cm, while the mean age was 4.6 years. The prevalent age classes were III, IV, and V. The growth rates of length were different in males and females. Until the third year of life males grew slightly faster, while from the fourth year, the females grew more rapidly. The von Bertalanffy equations that describe theoretical growth (length and weight) of flounder, from the Gulf of Gdańsk were calculated. Conclusion. The differences found in the morphometric and biological characters between the samples collected in three different locations of the southern Baltic (Pomeranian Bay, Słupsk Furrow, and Gulf of Gdańsk) may indicate that they represent separate stocks (populations).

Słowa kluczowe

EN

Platichthys flesus; fish; weight; Pomeranian Bay; length; growth rate; Baltic Sea; Gdansk Gulf; age; Southern Baltic Sea; flounder; Slupsk Furrow

• Wydawca: -
• Czasopismo: Acta Ichthyologica et Piscatoria
• Rocznik: 2005
• Tom: 35
• Numer: 1
• Opis fizyczny: p.51-60,fig.,ref.

Twórcy

autor

Antoszek A

• Agricultural Uniwersity of Szczecin, Kazimierza Krolewicza 4, 71-550 Szczecin, Poland

autor

Krzykawski S.

Bibliografia

• Anonymous, 2004. C-27. In: Fishery statistics—capture production.FAO, Roma 94 (1): 405–409.
• Antoszek A., Krzykawski S., 2003. Biomorphometry and growth rate of the flounder Platichthys flesus (L., 1758)from the Pomeranian Bay area. Acta Scientiarum Polonorum, seria Piscaria 2 (1): 3–26.
• Antoszek A., Krzykawski S., 2004. Morphometry and growth rate of the flounder Platichthys flesus (L., 1758) from the Słupsk Furrow (southern Baltic). Acta Scientiarum Polonorum, seria Piscaria 3 (1–2): 3–22.
• Antoszek A., Krzykawski S., 2005. Morphometry of flounder Platichthys flesus (L., 1758) from the Gulf of Gdańsk (southern Baltic). Acta Scientiarum Polonorum, seria Piscaria 4 (1–2): (in press).
• Ciślewicz W., 1935. Wzrost storni (Platichtchys flesus) poławianej w Zatoce Gdańskiej i w Zachodnim Bałtyku.[The growth rate of flounder (Platichthys flesus) captured In the Gulf of Gdańsk and in Western Baltic.] Archiwum Hydrobiologii i Rybactwa 9: 108–121. (In Polish.)
• Ciślewicz W., 1947. Wędrówki i wzrost znakowanych storni w Zatoce Gdańskiej i Basenie Bornholmskim. [Migrations and growth of tagged flounder in the Gulf of Gdańsk and In the Bornholm Basin.] Archiwum Hydrobiologii i Rybactwa C 13: 105–135. (In Polish.)
• Ciślewicz W., 1962. Charakterystyka biologiczna połowów storni (Platichtchys flesus L.) w Zatoce Gdańskiej.[Biological characteristics of the flounder catches in the Gulf of Gdańsk.] Prace Morskiego Instytutu Rybackiego, seria Oceanografia i Ichtiologia A 11: 201–223. (In Polish.)
• Ciślewicz W., 1972. Charakterystyka polskich połowów storni (Platichtchys flesus L.) w południowym Bałtyku w 1971 roku.[Characteristics of Polish catches of the flounder (Platichthys flesus L.) in the southern Baltic in 1971.] Ekosystemy Morskie,seria Ichtiologia, Gdynia (3): 83–101. (In Polish.)
• Ciślewicz W., 1973. Charakterystyka polskich połowów storni Platichtchys flesus (L.) w południowym Bałtyku w 1972 roku.[Characteristics of Polish catches of the flounder Platichthys flesus (L.) in the southern Baltic in 1972.] Ekosystemy Morskie, Ichtiologia, Gdynia (8), 57–72. (In Polish.)
• Ciślewicz W., 1974. Charakterystyka polskich połowów storni (Platichtchys flesus L.) w południowym Bałtyku w 1973 roku. [Characteristics of Polish catches of the flounder (Platichthys flesus L). in the southern Baltic in 1973.] Ekosystemy Morskie,Ichtiologia, Gdynia (13): 69–87. (In Polish.)
• Ciślewicz W., Draganik B., Żukowski Cz., 1969. Charakterystyka wzrostu storni (Platichtchys flesus L.)i skarpia (Scophthalmus maximus L.) za pomoca równania von Bertalanffy’ego. [Growth pattern of flounder (Platichthys flesus L.) and turbot (Scophthalmus maximus L.) by means of von Bertalanffy model.] Prace Morskiego Instytutu Rybackiego A15: 121–132. (In Polish.)
• Ciślewicz W., Hoppe G., 1970. The relation between the water temperature and the rate of growth of flounder Platichtchys flesus (L.) in Gdańsk Bay. Acta Ichthyologica et Piscatoria 1:67–72.
• Ciślewicz W., Netzel J., 1978. Analiza biologiczno-eksploatacyjna polskich połowów storni (Platichtchys flesus L.)w Południowym Bałtyku w latach 1971–1974. [Biological and exploitation analysis of Polish catches of the flounder (Platichthys flesus L.) in the southern Baltic within 1971–1974.] Studia i Materiały, Morski Instytut Rybacki A 20: 156–180. (In Polish.)
• Draganik B., Kuczyński J., 1993. A review of growth rate of the Baltic flounder (Platichtchys flesus L.) derived from otolith measurements. Biuletyn Morskiego Instytutu Rybackiego 3 (130): 21–36.
• Draganik B., Kuczyński J., 1996. Eksploatacja zasobów płastug w polskich obszarach morskich w 1995 r.[Exploitation of flatfish resources in Polish sea waters In 1995.] pp. 113–117. In: Raport Morskiego Instytutu Rybackiego, Gdynia 1995. (In Polish.)
• Fesołowicz W., Wiktor J., 1959. Płastugi w polskich połowach przybrzeżnych w Zatoce Pomorskiej. [Flatfishes in the Polish coastal catches in the Pomeranian Bay.] Prace Morskiego Instytutu Rybackiego A10: 383–402. (In Polish.)
• Kosior M., Kuczyński J., 1995. Liczebność ikry storni (Platichtchys flesus L.) południowego Bałtyku w 1993r.[Abundance of eggs of flounder (Platichtchys flesus L.)from the southern Baltic.] pp. 249–251. In: Raport Morskiego Instytutu Rybackiego 1993–1994. (In Polish.)
• Kuczyński J., 1992. Stornia (Platichtchys flesus L.). Polowy i stan zasobów dorszy i storni w Bałtyku (1980–1990). [The flounder (Platichthys flesus L.). Catches and condition of resources of cod and flounder in the Baltic Sea (1980–1990).] Studia i Materiały, Morski Instytut Rybacki B 59: 41–63. (In Polish.)
• Kuczyński J., 1995. Zasoby bałtyckich ryb płaskich eksploatowanych przez polskie rybołówstwo w 1994 r. [Resources of Baltic flatfish exploited by Polish fisheries in 1994.] pp. 265–278. In: Raport Morskiego Instytutu Rybackiego, Gdynia 1993–1994. (In Polish.)
• Kuczyński J., 1996. Charakterystyka polskich połowów storni (Platichtchys flesus L.) w południowym Bałtyku w 1995 r. [Characteristics of Polish catches of the flounder (Platichthys flesus L.) in the southern Baltic in 1995.] pp. 161–170.Raport Morskiego Instytutu Rybackiego, Gdynia. (In Polish.)
• Malorny K., 1990. Obserwacje narybku storni (P. flesus L.)występującego w strefie przybrzeżnej Zatoki Gdańskiej w latach 1982–1983. [Observations of the fry of flounder, (P. flesus L.), occurring in the coastal zone of the Gulf of Gdańsk within 1982–1983.] Zeszyty Naukowe Wydziału Biologii i Nauk o Ziemi Uniwersytetu Gdańskiego, seria Oceanografia 12: 43–58. (In Polish.)
• Miłosz J., Baniewicz D., Skorupowski W., Grelowski A., 2003.Atlas połowów bałtyckich 2002. [Catch atlas of the Baltic Sea for 2002.] Morski Instytut Rybacki, Gdynia. (In Polish).
• Minet P.J., 1973. Age and growth of the American plaice Hippoglossoides platessoides, of Cape Breton Island in ICNAF Subdivision 4 Vn. International Commission for the Northwest Atlantic Fisheries Research Bulletin 10: 99–105.
• Reimann Z., 1959. Stornia (P. flesus L.,) w połowach w rejonie bornholmskim w latach 1951–1955. [Flounder (P. flesus L.,) in the catches in the Bornholm area within 1951–1955.] Prace Morskiego Instytutu Rybackiego A 10:441–459. (In Polish.)
• Ricker W.E., 1975. Computation and interpretation of biological statistics of fish populations. Bulletin of the Fisheries Research Board of Canada 191: 1–382.
• Vovk F., 1956. O metodike rekonstrukcji rosta ryb po cesue.[On the method of growth rate determination with scalereading.]Trudy Biologiceskoj Stancii „Borok” 2: 252–392.(In Russian.)