DOCSLIB.ORG

The Growth and Reproduction of White Bream (Blicca Bjoerkna

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Growth and Reproduction of White Bream (Blicca Bjoerkna H. C. OKGERMAN, M. ELP, S. ATASAGUN Turk J Biol 36 (2012) 125-134 © TÜBİTAK doi:10.3906/biy-1012-157 Th e growth and reproduction of white bream (Blicca bjoerkna L. 1758) in an oligo-mesotrophic lake in northwest Anatolia (Sapanca, Turkey) Hacer Canan OKGERMAN1, Mahmut ELP2, Sibel ATASAGUN3 1Fisheries Faculty, İstanbul University, İstanbul - TURKEY 2Agriculture Faculty, Yüzüncü Yıl University, Campus, Van - TURKEY 3Hydrobiology Section, Biology Department, Ankara University, Ankara - TURKEY Received: 09.12.2010 Abstract: Growth parameters and the reproduction period of white bream (Blicca bjoerkna L. 1758) sampled from Sapanca Lake were determined monthly between November 2000 and October 2001. Th ree hundred and fi ft y white bream specimens caught ranged in age from 1+ to 9+ years, and the majority of the samples consisted of individuals of the 5+-year-old age group. Th e von Bertalanff y equation was determined as Lt = 22.169 (1 – exp {–0.215[t + 0.986]}), Ø’: 2.02 for males and Lt = 31.917 (1 – exp {–0.122[t + 1.087]}), Ø’: 2.10 for females. Th e length-weight relationship was estimated as W = 0.0046 TL exp. 3.315 ± 0.002 for males (r2 = 0.9653, P < 0.05), and W = 0.0036 TL exp. 3.417 ± 0.002 for females (r2 = 0.9671, P < 0.05). Regression coeffi cients for sex were signifi cant (t-test, P < 0.05). Th e slope (b) signifi cantly diff ered (ANCOVA, P < 0.05) between months. Th e fact that the b values for male and female white breams diff ered from 3.0 indicates that there was positive allometric growth. Sex ratio was 1:1.36 (χ2; P < 0.05). Spawning period of white breams began at the end of April and continued until the beginning of July; water temperature during this period ranged between 13.7 and 28.5 °C. Key words: White bream, Blicca bjoerkna L. 1758, Sapanca Lake, von Bertalanff y length-weight relationship, GSI Kuzeybatı Anadolu’da oligo-mezotrofi k bir göldeki tahta balığının (Blicca bjoerkna L. 1758) büyümesi ve üremesi (Sapanca, Türkiye) Özet: Kasım 2000 ve Ekim 2001 tarihleri arasında Sapanca Gölü’nden aylık olarak yakalanan tahta balığının (Blicca bjoerkna L., 1758) büyüme parametreleri ve üreme periyodu belirlenmiştir. Yakalanan 350 tahta balığının yaş değerleri 1+ ve 9+ arasındadır ve çoğunluğu 5+ yaşındaki bireylerden oluşmaktadır. von Bertalanff y büyüme eşitliği erkeklerde; Lt = 22,169 (1 – exp {–0,215[t + 0,986]}), Ø’: 2,02; ve dişilerde Lt = 31,917 (1 –exp {–0,122[t + 1,087]}), Ø’: 2,10 olarak belirlenmiştir. Boy ağırlık ilişkisi erkek bireyler için W = 0,0046 TL3,315 ± 0,002 ve dişiler için W = 0,0036 L3,417 ± 0,002 olarak hesaplanmıştır. Cinsiyetler arasındaki regresyon katsayısı önemlidir (t-test, P < 0,05). “b” değeri aylara göre önemli derecede farklılık göstermiştir (ANCOVA, P < 0,05). Dişi ve erkek tahta balıklarının “b” değeri 3’ten büyüktür ve pozitif allometrik büyüme göstermektedir. Cinsiyet oranı 1:1,36’dır (χ2; P < 0,05). Tahta balığının yumurtlama periyodu Nisan sonunda başlamakta ve Temmuz başına kadar devam etmektedir. Bu dönemdeki su sıcaklığı 13,7 ile 28,5 °C arasındadır. Anahtar sözcükler: Tahta balığı, Blicca bjoerkna L. 1758, Sapanca Gölü, von Bertalanff y boy-ağırlık ilişkisi, GSI 125 Th e growth and reproduction of white bream (Blicca bjoerkna L. 1758) in an oligo-mesotrophic lake in northwest Anatolia (Sapanca, Turkey) Introduction period in white bream from Sapanca Lake, an oligo- Fish constitute almost 50% of the total number mesotrophic lake in northwest Turkey. In addition, of recognized vertebrate species. About 39% of these we compared the data obtained in this study with fi sh species are found in, or almost always found previously reported data in an eff ort to improve in, fresh water (1). White bream (Blicca bjoerkna L. our understanding of the growth parameters and 1758) spreads widely in inland waters and lagoons reproduction period in white bream in Sapanca Lake. of Marmara, Black Sea, Caspian Sea, and Europe (2,3). White bream is euryphagous, with numerous Materials and methods populations inhabiting euthrophic waters (4). It inhabits the lower reaches of larger rivers in the Sapanca Lake is located in northwest Turkey bream zone, valley reservoirs, lakes, blind river arms, (40°41ʹN-40°44ʹN and 30°09ʹE-30°20ʹE). Th e surface and pools. Males of the species become partially area of the lake is 46.8 km2, mean and maximum mature as early as in the 2nd year, and females in the depths are 29 m and 52 m, respectively (Figure 1). 3rd-5th year. White bream can live up to 16 years (5). Th is lake is largely used for commercial and amateur Despite being an abundant species, white bream is of fi shing purposes as well as a source of drinking little importance as its meat is of poor quality, with water and industrial water. Th e littoral zone of the a great number of intermuscular bones. It forms an lake is dominated by Phragmites spp. Th ere are important component in the diet of predatory fi shes. some submerged macrophytes in the lake, such as White bream was zoogeographically introduced Chara spp., Myrophyllum spp., Ceratophyllum spp., into Turkey from the Western Th race region, and Potamogeton spp., Najas spp., and Nuphar spp. Th e it mainly spread in north and northwest parts of minimum and maximum temperature of the surface Anatolia (2). White bream (22.98%) is caught less water was 8 °C and 29 °C, respectively. Th e minimum in Sapanca Lake compared to rudd [Scardinius and maximum PO4-P, NO3-N, and Chlorophyll-a eryhthrophthalmus L. (24.43%)] and more compared values year round were 0.006-0.063 mg/L, 0.043- to vimba [Vimba vimba L. (8.71%) and roach 0.344 mg/L, and 7.97-21.59 mg/m3, respectively [Rutilus rutilus L. (21.71%)] (6). Although there is no (7). Sapanca Lake is changing from an oligotrophic economic value of white bream in general, it is now to oligo-mesotrophic state (8). Ten fi sh families caught for consumption in Sapanca Lake due to the were found in Lake Sapanca, namely Cobitidae, decrease of commercial fi sh as a result of overfi shing. Cyprinidae, Atherinidae, Clupeidae, Gobiidae, Th e aim of the present study was to determine the Balitoridae, Esocidae, Salmonidae, Siluridae, and length-weight relationship, growth, and reproduction Syngnathidae (9,10). SAPANCA LAKE 4 3 2 1 Figure 1. Sapanca Lake - sampling stations. 126 H. C. OKGERMAN, M. ELP, S. ATASAGUN White breams were caught in Sapanca Lake was used to compare the parameters obtained from between November 2000 and October 2001 (at all grouped data (general coeffi cient) using the data monthly intervals). Since populations of white bream grouped by month (monthly coeffi cients). Condition were intensively caught at the eastern region of the coeffi cient (CF) was calculated for each sex using the lake according to the local fi shermen, these specimens equation CF = W/L3 × 100 (13). were sampled at 4 stations in this region of the lake Th e overall sex ratio was determined. Th e (Figure 1). All the fi sh specimens were caught using diff erence between sex ratios was tested using χ2 (chi gill nets of various mesh sizes (10, 22, 26, 30, 34, 38, 42, square) (16). Th e gonads were removed and weighed 48, 50 mm knot to knot). Th e study sample included to the nearest 0.1 g. Th e gonadosomatic index (GSI 350 white breams (202 males and 148 females). Fish %) (gonad weight/total body weight × 100) was were brought to the laboratory soon aft er capture. calculated for each fi sh and all values were averaged Th e total length (TL) of each fi sh was measured in on a monthly basis (13). In each sampling month, the laboratory (to the nearest 0.1 cm) and the fi sh water temperature was measured to determine the were weighed in grams (to the nearest 0.1 g). Th e sex relationship between temperature and gonad growth. of the specimens was determined by macroscopic Statistical analyses were carried out using SPPS for and microscopic observation of the gonads. Scales Windows V 11.0 and Statistica 6. on the left side of the body between the lateral line and dorsal fi n were collected and analyzed between 2 slides in order to determine age (11). Scales of 6 Results and discussion individuals out of the 350 were deformed, and not Female and male white breams ranged in age used for assessment. groups from 1+ to 9+ years (excluding 2+); the 5+ Growth was investigated by applying the von year-old age group was the most abundant (36.04%). Bertalanff y growth function to pooled size-at-age for Total length ranged from 6.6 to 24.3 cm and weight both sexes using standard non-linear optimization ranged from 2.8 to 159.4 g (Table 1). Th e diff erence methods. Th e von Bertalanff y growth function was in growth between male and female white breams calculated as follows: Lt = L∞ (1 – exp {–K[t – to]}), was signifi cant (P < 0.05). Body size calculations where Lt is length at age t, L∞ is asymptotic length, k made according to sex and age showed that male + + is the growth coeffi cient, and to is the hypothetical age white breams in the age groups 1 and 3 were longer at which length is equal to zero (12-14). Th e growth compared to females of the same age groups (Table performance index (Ø’) was calculated using the 1).
Load more

Recommended publications
  • Length-Weight Relationship of Ten Species of Leuciscinae Sub-Family (Cyprinidae) from Iranian Inland Waters
    Int Aquat Res (2020) 12:133–136 https://doi.org/10.22034/IAR(20).2020.1891648.1004 SHORT COMMUNICATION Length-weight relationship of ten species of Leuciscinae sub-family (Cyprinidae) from Iranian inland waters Soheil Eagderi . Atta Mouludi-Saleh . Erdogan Çiçek Received: 23 January 2020 / Accepted: 16 April 2020 / Published online: 16 May 2020 © The Author(s) 2020 Abstract In this study, the length-weight relationships (LWRs) were estimated for 697 specimens belonging to ten species of Leuciscinae subfamily, viz. Squalius berak, S. namak, S. turcicus, Acanthobrama marmid, A. microlepis, Chondrostoma esmaeilii, Leuciscus latus, Alburnus doriae, Leucaspius delineates and Blicca bjoerkna from Iranian inland waters, including the Persian Gulf, Caspian Sea, Namak Lake, Dasht-e Kavir, Hari River and Isfahan basins. Total length and total weight of the examined specimens ranged 3.8-27.8 cm and 0.59-247 g, respectively. Fishes were collected using electrofishing device between July 2010 and August 2017. This study represents the first reports of LWRs data for A. doriae, C. esmaeilii, L. latus and L. delineates. The length-weight parameter b found to be 2.75 (A. microlepis) - 3.44 (B. bjoerkna) with regression coefficients (r2) ranging 0.87 to 0.99 for the studied fishes. The student’s t-test showed all studied species have a positive allometric growth pattern except A. doriae (isometric) and A. microlepis (negative allometric). Keywords LWRs . Leuciscinae . Chondrostoma esmaeilii . Leuciscus latus Introduction Study of fish species and their populations are important to understand their biological aspects in order to optimal management of their resources (Jalili et al.
    [Show full text]
  • Some Investigations on Incidence and Infestation Level in Cyprinid Postodiplostomosis
    Some investigations on incidence and infestation level in Cyprinid postodiplostomosis Octavian NEGREA1), Vioara 1), Camelia 1), Grigore ONACIU1), 1) 1) 1)* Octavia NEGREA , , Daniel COCAN MIREŞAN RĂDUCU 1University of AgriculturalCălin LAIU Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Animal Science and Biotechnologies Cluj-Napoca, 3-5 Street, 400372, Romania *Corresponding author, e-mail: [email protected] Mănăştur Bulletin UASVM Animal Science and Biotechnologies 72(2) / 2015 Print ISSN 1843-5262; Electronic ISSN 1843-536X DOI:10.15835/buasvmcn-asb:11457 Abstract In our study, we sampled 82 fish specimens as follows: 62 rudd (Scardinius erythrophthalmus), 8 roach (Rutilus rutilus) and 12 silver bream (Blicca bjoerkna). The sampling was done in Mare Lake, Cluj County. The investigations took into account the incidence and infestation levels of fish with Posthodiplostomum cuticola metacercaria. The study results show an incidence of parasitosis of 80.60% for rudd, 75.00%aga for roach and 25.05% for silver bream. Regarding the intensity of infestation (low, medium and high), low levels of infestation are predominant (rudd 72%; roach 83.30%; silver bream 66.60%). The preferred body area for metacercaria (in descending order) are as follows: for rudd 90.00% on the body, 86.00 on the fins and caudal peduncle, and 28.80% on the head; for roach– - 50.00% on the body, 66.00% on the– fins and caudal peduncle, and 33.00% on the head; for silver bream 100.00% on the body, 33.00%– on the fins and caudal peduncle, and 33.00% on the head. Histopathological sections were taken from musculocutaneous tissue extracted from the dorsal –area of fish which was parasitized with cystic metacercariae.
    [Show full text]
  • Age, Growth and Reproductive Period of White Bream, Blicca Bjoerkna (L., 1758) in Lake Ladik, Turkey
    LIMNOFISH-Journal of Limnology and Freshwater Fisheries Research 1(1): 9-18 (2015) Age, Growth and Reproductive Period of White Bream, Blicca bjoerkna (L., 1758) in Lake Ladik, Turkey Savaş YILMAZ1,*, Okan YAZICIOĞLU2, Ramazan YAZICI3, Nazmi POLAT1 1 Ondokuz Mayıs University, Faculty of Arts and Science, Department of Biology, Samsun-Turkey 2 Ahi Evran University, Technical Vocational Schools of Higher Education, Botanic and Animal Production Department, Organic Farming Program, Kırşehir-Turkey 3 Ahi Evran University, Çiçekdağı Technical Vocational Schools of Higher Education, Laboratory and Veterinary Health Department, Kırşehir-Turkey ABSTRACT ARTICLE INFO The white bream, Blicca bjoerkna (L., 1758) specimens (n=434) were collected RESEARCH ARTICLE from Lake Ladik between November 2009 and October 2010 in order to determine the age, growth, and reproductive season. Fork lengths and weights of Received : 08.01.2015 these samples varied between 11.5-24.3 cm and 22.80-259.00 g, respectively. Age Revised : 16.03.2015 estimates obtained from scales and vertebrae were compared to determine the most reliable bony structure for ageing. The precision analyses indicated that Accepted : 17.03.2015 scales were the most appropriate hard structures for determining the age of white Published : 20.04.2015 bream. Ages of all the specimens ranged from I to VI years and age group III was dominant. The parameters of the von Bertalanffy growth equations were -1 calculated as L∞ = 32.85 cm, W∞ = 707.76 g, k = 0.11 year and t0 = -2.64 year, and the growth performance index (Φ') value was computed as 2.074 for * CORRESPONDING AUTHOR combined sexes.
    [Show full text]
  • Impact of Fish Species on Levels of Lead Accumulation in the Meat of Common Bream (Abramis Brama L.), White Bream (Blicca Bjoerk
    Journal of Central European Agriculture, 2015, 16(2), p.62-71 DOI: 10.5513/JCEA01/16.2.1590 Impact of fish species on levels of lead accumulation in the meat of common bream (Abramis brama L.), white bream (Blicca bjoerkna L.) and common bleak (Alburnus alburnus L.) from the Vistula River (Poland) Wpływ gatunku ryby na koncentrację ołowiu w mięsie leszcza (Abramis brama L.), krąpia (Blicca bjoerkna L.) i uklei (Alburnus alburnus L.) odłowionych z rzeki Wisły (Polska) Magdalena STANEK1*, Janusz DĄBROWSKI2, Bogdan JANICKI1, Aleksandra ROŚLEWSKA1 and Anita STRZELECKA 1Division of Biochemistry and Toxicology, Faculty of Animal Breeding and Biology, University of Sciences and Technology, Mazowiecka Street 28, 85-084 Bydgoszcz, Poland, *correspondence: [email protected] 2Division of Ecology, Faculty of Animal Breeding and Biology, University of Sciences and Technology, Bydgoszcz, Poland Abstract The aim of this work was to compare the concentration of lead in the meat of common bream (Abramis brama L.), white bream (Blicca bjoerkna L.) and common bleak (Alburnus alburnus L.). The experimental fish were obtained in natural condition from Vistula River, located within Toruń, near wastewater treatment plant. The study involved 60 individuals of freshwater fish caught in autumn. Analyses were carried out on 10 individuals of common bream, 20 white bream and 30 individuals of common bleak. The muscles samples for analyses were taken from the large side muscle of fish body above the lateral line. There were chosen for analyses individuals with similar biometric measurements. Due to a relatively low amounts of meat obtained from white bream and common bleak, the material from individuals of similar body length was combined (about 2-3 pieces).
    [Show full text]
  • Assessment of the Impact of Seasonal Patterns Climatic Conditions on Spawning Events of the White Bream Blicca Bjoerkna (Linnaeus, 1758) in Astronomical and Biological Time
    Altai State University www.asu.ru ISSN 2412-1908 Acta Biologica Sibirica, 2018, 4(2), 61–77 RESEARCH ARTICLE UDC 574(470.4-751.1)(082) Assessment of the impact of seasonal patterns climatic conditions on spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758) in astronomical and biological time D. Bondarev1, O. Kunah2, O. Zhukov2 1 “Dnipro-Orylskiy” Nature Reserve 52030 Obukhovka, Dniprovsk district, Dnipropetrovsk region, Ukraine; e-mail: [email protected] 2Department of Zoology and Ecology, Oles Honchar Dnipro National University, pr. Gagarina, 72, 49010 Dnipro, Ukraine; e-mail: [email protected], [email protected] This paper describes spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758 )in astronomical and biological time depending on seasonal patterns of climatic conditions. The research was conducted in the "Dnipro-Orilskiy" Nature Reserve (Ukraine) during the years 1997–2015 in four habitat types. The timing of the spawning event (start, end) was evaluated using astronomical time (number of days from January 1 each year), with correction for the lunar and the semilunar cycle, and using biological time (number of days from the end of spawning in the previous year to the beginning and end of spawning in the current year). The spawning phenology of the white bream was found to be dependent on the dynamics of weather conditions over time. Patterns of varying climatic regimes which are expressed by means of multivariate principal component are the most informative predictors of the spawning events. Evaluation of occurrence of spawning events in astronomic or biological time gives somewhat different models of the impact of climate regimes.
    [Show full text]
  • Synopsis of Biological Data an the Bream Abramis Brama
    FAO Fisheries Synopsis No. 36 FRi/b JO (Distribution restricted) SAST - A. brama 1,40(02),001,02 SYNOPSIS OF BIOLOGICAL DAT: ON Ï 114EAM _ramis brama (Linnaeus, 1758) Prepared by T. Backiel and J. Zawisza F FOOD AND AGRICULTII a' ORGANIZATION OF THE UNITED NATIONS Rome, 1968 4- p DOCUMENTS OF THE FISHERY DOCUMENTS DE LA DIVISION DOCUMENTOS DE LADIRECCION RESOURCES AND EXPLOITATION DES RESSOURCES ET DE L'EX- DE RECURSOS PESQUEROS Y EX- DIVISION OF FAO DEPARTMENT PLOITATION DES PECHES DU De- PLOTACION DEL DEPARTAMENTO OF FISHERIES PARTEMENT DES PECHES DE LA DE PESCA DE LA FAO FAO Documents whicharenotofficial Des documents qui ne figurent pas Esta Subdirección publica varias se- FAO publications are issued in several parmi les publications officielles de la ries de documentos que no pueden series.They aregiven a restricted FAO sont publiés dans diverses series. considerarse como publicacionesofi- distribution andthisfactshould be Ils font seulement l'objet d'une distri- ciales de la FAO. Todos ellos tienen indicatedifthey arecited.Most of butionrestreinte, aussi convient-il de distribución limitada, circunstancia que them are prepared as working papers le préciser lorsque ces documents sont debe indicarse en el caso de ser ci- for meetings, or are summaries of infor- cites.IIs'agit le plus souvent de do- tados. La mayoría de los títulos que mationforuseof member govern- cuments de travail prepares pour des figuranendichasseries son docu- ments,organizations,andspecialists réunions, ou de resumes d'information mentos de trabajopreparadospara concerned. l'intention des gouvernements des reuniones o resúmenes de información pays membres, ainsi que des organi- destinados alosestados miembros, sations et specialistes intéressés.
    [Show full text]
  • The Annual Reproductive Cycle of Rudd, Scardinius Erythrophthalmus (Cyprinidae) from the Lower Oder River and Lake D¹bie, (NW Poland)
    e-ISSN 1734-9168 Folia Biologica (Kraków), vol. 68 (2020), No 1 http://www.isez.pan.krakow.pl/en/folia-biologica.html https://doi.org/10.3409/fb_68-1.04 The Annual Reproductive Cycle of Rudd, Scardinius erythrophthalmus (Cyprinidae) from the Lower Oder River and Lake D¹bie, (NW Poland) Józef DOMAGA£A, Lucyna KIRCZUK , Katarzyna DZIEWULSKA , and Ma³gorzata PILECKA-RAPACZ Accepted January 21, 2020 Published online March 30, 2020 Issue online March 31, 2020 Original article DOMAGA£A J., KIRCZUK L., DZIEWULSKA K., PILECKA-RAPACZ M. 2020. The annual reproductive cycle of rudd, Scardinius erythrophthalmus (Cyprinidae) from the lower Oder River and Lake D¹bie, (NW Poland). Folia Biologica (Kraków) 68: 23-33. The rudd is a common freshwater species of the European ichthyofauna, however, this species’ sexual cycle has not yet been described based on the histological analysis of its gonads. The aim of this study was to analyze the annual gonad development cycle of rudd from the watercourses of north-western Poland. Adult individuals aged 2+ to 13+, of both sexes were caught in the Oder River and Lake D¹bie. A standard paraffin technique and six-stage scales were used to assess the development of gonad maturity in both sexes. Rudd gonads developed similarly in the Oder River and Lake D¹bie. Eggs were deposited in batches from the beginning of May to the half of June. Females deposited at least two batches of eggs. In the majority of females collected from these sites, the gonads developed asynchronously throughout the year. Rudd males attained reproductive readiness in the same period as the females, but retained gametes in their gonads for a month longer than the females.
    [Show full text]
  • Filter-Feeding in Common Bream(Abramis Brama)
    Filter-feeding in common bream (Abramis brama),whit e bream (Blicca bjoerkna)an d roach (Rutilusrutilus); structures , functions and ecological significance CENTRALE LANDBOUWCATALOQUS 0000 0513941 1 Promotor: Prof. Dr. J.W.M. Osse Hoogleraar Algemene Dierkunde Co-promotor: Dr. F.A. Sibbing Universitair Hoofddocent Functionele Diermorfologie ^jQSZV'i '6c/c/ Coen van den Berg Filter-feeding in common bream (Abramis brama),whit e bream (Blicca bjoerkna) and roach (Rutilusrutilus)\ structures , functions and ecological significance Proefschrift ter verkrijging van de graad van doctor in de landbouw- en milieuwetenschappen op gezag van de rector magnificus, dr. H.C. van der Plas, in het openbaar te verdedigen op donderdag 17jun i 1993 des namiddags te vier uur in de aula van de Landbouwuniversiteit te Wageningen ^ BlBtlOFHEEN taNDBOUWUNlVERSflW WAGENINGEN Hetonderzoek dat in dit proefschrift is beschreven ismogelijk gemaakt door een subsidie van NWOIStichting BION(projectnummer 428-265) aanProf. Dr.J.W.M. Osse vande sectie Functionele Diermorfologie van devakgroep Experimentele Diermorfologie en Celbiologie van de LandbouwuniversiteitteWageningen Stellingen 1 Deeffectivitei t vanee nkieuwzee f inhe ttegenhoude nva nprooideeltje s hangta f vand evor m van diedeeltjes . Verschillen inretenti eeffectivitei t perprooisoor t geven bovendienaanwijzinge n over devor m vand emaze n vand ekieuwzee f endaarme eteven sove r hetretenti emechanisme . ditproefscivrift 2 Microscopische anatomischedetail skunne nee ngroo teffec t hebbeno pd emogelijkhede n vanee n individu om zijn omgeving teexploiteren . Morfologie enautoecologi ezij nster k verweven. ditproefschrift 3 Bijhe tbiomechanisc h onderzoek vanvisse ni she tgebruikelij k teprobere n bewegingenloodrech t opd ebewegingsrichtin g tefilmen . Projectiefouten wordenhierdoo r echterverhul d zodatee ntwee ­ dimensionaleanalys e vand ebeweginge n uitzulk efilms ongemerk t totgrot e fouten kan leiden.
    [Show full text]
  • Silver Bream (Blicca Bjoerkna) ERSS
    Silver Bream (Blicca bjoerkna) Ecological Risk Screening Summary U.S. Fish and Wildlife Service, March 2014 Revised, February 2018 Web Version, 8/30/2018 Photo: A. Harka. Licensed under Creative Commons (CC-BY 3.0). Available: http://www.fishbase.org/photos/ThumbnailsSummary.php?Genus=Blicca&Species=bjoerkna# (February 2018). 1 Native Range and Status in the United States Native Range From Froese and Pauly (2017): “Europe and Asia: North, Baltic, White, Black (south to Rioni drainage) and Caspian Sea basins, Atlantic basin southward to Adour drainage (France; possibly introduced southward of Loire) and Mediterranean basin in France (Hérault and Rhône drainages). In Aral, Marmara and Anatolian Black Sea basins west of Ankara. Naturally absent from Iberian Peninsula, Italy, 1 Adriatic basin, Crimea, Great Britain (except southeast), Scandinavia north of Sundsvall (Sweden) and 65° N (Finland).” Status in the United States This species has not been reported in the United States. Means of Introductions in the United States This species has not been reported in the United States. 2 Biology and Ecology Taxonomic Hierarchy and Taxonomic Standing From ITIS (2018): “Kingdom Animalia Subkingdom Bilateria Infrakingdom Deuterostomia Phylum Chordata Subphylum Vertebrata Infraphylum Gnathostomata Superclass Osteichthyes Class Actinopterygii Subclass Neopterygii Infraclass Teleostei Superorder Ostariophysi Order Cypriniformes Superfamily Cyprinoidea Family Cyprinidae Genus Blicca Species Blicca bjoerkna” “Taxonomic Status: valid” Size, Weight, and Age Range From Froese and Pauly (2017): […] Max length : 36.0 cm TL male/unsexed; [Gerstmeier and Romig 1998]; common length : 20.0 cm TL male/unsexed; [Muus and Dahlström 1968]; max. published weight: 1.0 kg [Billard 1997]” 2 Environment From Froese and Pauly (2017): “Freshwater; brackish; demersal; potamodromous [Riede 2004]; depth range 0 - ? m.
    [Show full text]
  • Cyprinids in Estonian Small Lakes: Comparison Between Main Water Basins
    Cyprinids in Estonian Small Lakes: Comparison between Main Water Basins Anu Palm (1) amd Teet Krause (1), Ain Järvalt(1), Maidu Silm (1) (1) Estonian University for Life Sciences, Centre for Limnology at PKI, Tartu, Estonia Abstract In last 16 years, we sampled slightly over a hundred small lakes in Estonia with Nordic type of multimesh gillnets for cyprinids. We captured 15 cyprinid species out of 18 considered as natural of origin in Estonian inland waters. Rheophilic riffle minnow (Alburnoides bipunctatus) and minnow (Phoxinus phoxinus) in addition to stocked carp (Cyprinus carpio) never occurred in samples, whereas vimba bream (Vimba vimba) and piscivorous asp (Aspius aspius) occurred twice. Extremely rare in samples were also chub (Leuciscus cephalus), gudgeon (Gobio gobio), dace (L. leuciscus), and ide (L. idus). The gibel carp (Carassius gibelio), crussian carp (Carassius carassius), and tench (Tinca tinca) were caught mostly in coastal and closed lakes. Open lakes with in- and outlet were preferred by bream (Abramis brama), bleak (Alburnus alburnus), and white bream (Blicca bjoerkna). Numbers of cyprinid species co-increased with the numbers of individuals in a sample both either water basins or lake types along the water course were compared; coastal lakes were the only exception. We consider the ratio numbers of cyprinid individuals per cyprinid species to indicate directly the pressure of piscivory and hence indirectly the quality of lake water. Keywords: Cyprinidae, lake type, multimesh gill net, water quality Introduction The fish distribution of Northern Europe is described as a outcome of postglacial dispersal (Mooi, Gill, 2002) in the long-lasting processes of retreat southwards by ice formation and recolonization of ice- free areas (Paaver, Lõugas, 2003).
    [Show full text]
  • SPIXIANA ©Zoologische Staatssammlung München;Download
    ©Zoologische Staatssammlung München;download: http://www.biodiversitylibrary.org/; www.biologiezentrum.at SPIXIANA ©Zoologische Staatssammlung München;download: http://www.biodiversitylibrary.org/; www.biologiezentrum.at Fig. 1. Distribution of the Euro-Siberian and Eastern North American fish species and of their vicariant sisters. 1. Esox luciHs; 2. E. reicherti; 3. ThymaÜMs thymallus, 4. Th. grübet. Five species are Palaearctic, living in Europe, Siberia and East Asia (or only in Europe and East Asia); a single one of them, the cold-adapted Phoxinus phoxinus, has a vicariant sister: the eastern North American Ph. neogaeus (Howes 1985) (Fig. 2). Eight species have Euro-Siberian ranges; one of them, Tinea tinca, has no sister in the recent fauna; the sisters of two others, Rutilus rutilus and Gymnocephalus cernuus, hve sympatrically with these in a part of their ranges. Five Euro-Siberian species have vicariant sisters: that of Perca fluviatilis is the eastern North American P. flavescens, those of the salmonid Hucho hucho and of the cyprinids Leu- ciscHs idus and Carassms carassius are East Asian (L. walecki and C. auratus, Fig. 3) while Leuciscus leuciscus has five vicariant sisters, each with a hmited ränge: one in the western Balkan, the four others in various areas of western Asia (Berg 1932, 1948—1949; Banarescu 1964, Fig. 136). Several European (or partially also western Asian) species, either widely distributed throughout the continent or confined to a part of it, have vicariant sisters in other continental areas : the sisters of Cot- tus gohio and C. poecilopus ränge in the Arctic Ocean basin of Siberia (C. Sibiriens and C.
    [Show full text]
  • The Analysis of the Pharyngeal-Sieve Mechanism and the Efficiency of Food Intake in the Bream (Abramis Brama
    The analysis of the pharyngeal-sieve mechanism and the efficiency of food intake in the bream (Abramis brama. Cyprinidae) Coverdesign: Wim Valen _ "•'milium 1 0456 6663 ^1 Promoter: dr. J.W.M. Osse, hoogleraar algemene dierkunde Co-promotoren: dr. E.H.R.R. Lammens, wetenschappelijk onderzoeker bij het Limnologisch Instituut van de Koninklijke Nederlandse Academie van Wetenschappen dr. F.A. Sibbing, universitair hoofddocent algemene dierkunde p^}o8^©^ *w Willem Hoogenboezem THE ANALYSIS OF THE PHARYNGEAL-SIEVE MECHANISM AND THE EFFICIENCY OFFOOD INTAKE IN THEBREAM (Abramis brama.Cypriaidae) Proefschrift ter verkrijging van de graad van doctor in de landbouw- en milieuwetenschappen op gezag van de rector magnificus, dr. H.C. van der Plas, in het openbaar te verdedigen op woensdag 4 december 1991 des namiddags te vier uur in de aula van de Landbouwuniversiteit te Wageningen. VyMl Sn Voor Tineke, Daphne en Remco Het onderzoek dat in dit proefschrift wordt beschreven werd mogelijk gemaakt door een subsidie van NWO/Stichting BION (beleidsproject 437.241 B) aan Prof. Dr. J.W.M. Osse (LUW) en Dr. J. Vijverberg (Limnologisch Instituut, KNAW), werkgroepleiders van de werkgroep Morfologie van Mens en Dier respectievelijk Aquatische Oecologie. Door vertraging van dit project in het eerstejaar werd deze subsidie aangevuld door LUW en KNAW waardoor verlenging met 1jaar mogelijk werd gemaakt. LANDBOU'W'UNIVERSITEIT WACENTNOF.N ^MO?)^ ^5Lf Stellingen 1 De brasem maakt bij het foerageren achtereenvolgens de volgende keuzen: benthisch of pelagisch; "particulate-" of "filter-feeding" en in het laatste geval met of zonder gereduceerde kieuwfilter kanalen (dit proefschrift). 2 De prooi-grootte selectie bij zooplanktivore brasem wordt voor een belangrijk deel bepaald door de "feeding-mode" (Janssen, 1976; dit proefschrift).
    [Show full text]