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Full-Text Articles in Animal Sciences
On The Oviposition Of Homonota Aff. Darwinii In The Puna Region Of The Central Andes Of Argentina, Franco Valdez Ovallez, Rodrigo Gómez Alés, Rodrigo Nieva Cocilio, Tomás Martínez, Juan Carlos Acosta, José Villavicencio, Graciela Blanco
On The Oviposition Of Homonota Aff. Darwinii In The Puna Region Of The Central Andes Of Argentina, Franco Valdez Ovallez, Rodrigo Gómez Alés, Rodrigo Nieva Cocilio, Tomás Martínez, Juan Carlos Acosta, José Villavicencio, Graciela Blanco
Turkish Journal of Zoology
Communal nest egg-laying refers to females laying their eggs with those of their conspecifics under or within artificial or natural structures. Homonota aff. darwinii is a recently discovered species that has not yet been formally described. The objective of this work is to characterise the oviposition of this species in the Puna region in the Central Andes of Argentina. We recorded the type and surface of the rocks where the eggs were laid, the temperature of the substrate, and the temperature of the rock surface facing the substrate. In addition, we recorded the daily temperature variation that a randomly selected …
Androgenic Hormones In Crustacean Aquaculture: A Review, Muzaffer Mustafa Harlioğlu, Ardavan Farhadi̇
Androgenic Hormones In Crustacean Aquaculture: A Review, Muzaffer Mustafa Harlioğlu, Ardavan Farhadi̇
Turkish Journal of Zoology
Increased demands of the seafood market have led to the rapid growth in crustacean aquaculture production in various parts of the world. Therefore, an expansion in the knowledge of the reproductive biology of crustaceans has become more important. Hormones released from the androgenic gland (AG) in crustaceans are liable for both the separation of primary and secondary sexual features and reproductive behavior. AG removal in male crustaceans causes a transformation of the intersex animals towards the females and a degeneration of spermatids and reproductive organs. AG implantation and injection of AG extracts are common approaches for crustacean masculinization. In this …
Some Histological Reveals On Reproduction Of One Of The Lessepsian Species, Nemipterus Randalli In Antalya (Turkey), Mehmet Rüştü Özen
Some Histological Reveals On Reproduction Of One Of The Lessepsian Species, Nemipterus Randalli In Antalya (Turkey), Mehmet Rüştü Özen
Turkish Journal of Veterinary & Animal Sciences
In this study, the reproduction of Nemipterus randalli, one of the lessepsian fish catch from the Gulf of Antalya, Turkey was interpreted histologically. Regarding the fish used in this study (N = 1715), it is noteworthy to mention that male individuals are larger than females. The first sexual maturity in males was determined 17 cm TL and 60 g in BW, whereas 13 cm TL and 25 g BW in females. Females reached sexual maturity at age I+ and males at the age of II+. Seven different stages (O1-O7) were identified in oocyte maturation in the ovaries. The spawning time …
The Use Of Doppler Ultrasound As A Potential Fertility Predictor In Male Goats, Diego Luiz Dos Santos Ribeiro, Larissa Sarmento Santos, Itamara Gomes França, Hellyda Gomes Pereira, Joaquim De Sousa Lima, Bento Douglas Brito Miranda, Alcina Vieira Carvalho Neta, Jose Ribamar S Torres Junior
The Use Of Doppler Ultrasound As A Potential Fertility Predictor In Male Goats, Diego Luiz Dos Santos Ribeiro, Larissa Sarmento Santos, Itamara Gomes França, Hellyda Gomes Pereira, Joaquim De Sousa Lima, Bento Douglas Brito Miranda, Alcina Vieira Carvalho Neta, Jose Ribamar S Torres Junior
Turkish Journal of Veterinary & Animal Sciences
The aim of the current study is to correlate Doppler flowmetry with andrological features in male goats belonging to different age and fertility groups. Thirty native crossbreed bucks bred in Northeastern Brazil were subjected to B-mode, spectral and color Doppler ultrasound, as well as to andrological examinations. Color Doppler ultrasound was used to evaluate blood flow in the pampiniform plexus and testicular parenchyma. Semen was collected through the electroejaculation method in order to have its physical and morphological features evaluated. The animals were grouped based on age (young, mature, and old) and fertility level (high and low) before analysis. Data …
In Vitro Exposure To Di-(2-Ethylhexyl) Phthalate (Dehp) Stimulates Spontaneous Felineuterine Contractions, Ruhi̇ Kabakçi, Hasan Ceyhun Macun, Ebru Yildirim, İbrahi̇m Mert Polat, Taha Burak Eli̇foğlu
In Vitro Exposure To Di-(2-Ethylhexyl) Phthalate (Dehp) Stimulates Spontaneous Felineuterine Contractions, Ruhi̇ Kabakçi, Hasan Ceyhun Macun, Ebru Yildirim, İbrahi̇m Mert Polat, Taha Burak Eli̇foğlu
Turkish Journal of Veterinary & Animal Sciences
Di-(2-ethylhexyl) phthalate (DEHP) is widely used as a plasticizer in various products such as PVC-derived plastics, toys, packaging materials, cosmetics, and pharmaceuticals. This study aimed to investigate the effect of DEHP on spontaneous contractions of the feline uterus in vitro. Tubal 1-cm uterine samples prepared from 10, 9, and 12 uteri obtained from adult cats in estrus (n = 5), diestrus (n = 5), and interestrus (n = 5), respectively, after ovariohysterectomy were suspended in an isolated organ bath in aerated Krebs solution at 39 ± 1 °C, and an initial 1 g tension was given. After 1 h equilibration …
Lichens In The Nests Of European Starling Sturnus Vulgaris Serve A Mate Attraction Rather Than Insecticidal Function, Lucia Mariel Ibañez, Renato Andres García, Vanina Dafne Fiorini, Diego Montalti
Lichens In The Nests Of European Starling Sturnus Vulgaris Serve A Mate Attraction Rather Than Insecticidal Function, Lucia Mariel Ibañez, Renato Andres García, Vanina Dafne Fiorini, Diego Montalti
Turkish Journal of Zoology
The European starling Sturnus vulgaris is a hole-nesting bird in which the male builds a voluminous nest using a wide variety of materials such as twigs, grass, leaves, feathers, and lichens. The function of lichens in starling nests has not been assessed until now and we hypothesize that this material is related to a mate attraction function or is used to protect nestlings from parasites due to the presence of secondary compounds with insecticidal effects with the lichens. We aimed to identify the lichen species and frequency of lichen use in European starling nests, and to determine if the presence …
Seasonal Hormones, Female Reproductive Tract Changes, And Some Field Observations Onbreeding Activities Of The Small Indian Mongoose (Herpestes Javanicus) From Its Nativerange Of Potohar Plateau, Pakistan, Faraz Akrim, Hira Fatima, Saidia Nazir, Tariq Mahmood, Riaz Hussain, Muhammad Sajid Nadeem
Seasonal Hormones, Female Reproductive Tract Changes, And Some Field Observations Onbreeding Activities Of The Small Indian Mongoose (Herpestes Javanicus) From Its Nativerange Of Potohar Plateau, Pakistan, Faraz Akrim, Hira Fatima, Saidia Nazir, Tariq Mahmood, Riaz Hussain, Muhammad Sajid Nadeem
Turkish Journal of Zoology
The small Indian mongoose acts as a biological control agent for rodents, snakes, and many insects in agroecosystems. Its reproductive physiology has been studied mostly from its introduced range. We investigated the reproductive pattern of the female small Indian mongoose on the Potohar Plateau, i.e. its native range. We found a male:female ratio of 0.67 (n = 52); only 16% of the live-trapped females were found to be pregnant. Elevated estradiol and progesterone levels were found during March to May. LH levels showed 2 peaks: the first during March (25.5 mIU/mL) and the second in September (29.8 mIU/mL); however, FSH …
Seasonal Pattern Of Population Dynamics, Spawning Activities, And Diet Composition Of Sardine (Sardina Pilchardus Walbaum) In The Eastern Adriatic Sea, Barbara Zorica, Vanja Cikes Kec, Olja Vi̇djak, Viktor Kraljevic, Goran Brzulja
Seasonal Pattern Of Population Dynamics, Spawning Activities, And Diet Composition Of Sardine (Sardina Pilchardus Walbaum) In The Eastern Adriatic Sea, Barbara Zorica, Vanja Cikes Kec, Olja Vi̇djak, Viktor Kraljevic, Goran Brzulja
Turkish Journal of Zoology
Monthly samples from commercial catches obtained with purse seiners operating in the Croatian fishing grounds (eastern Adriatic Sea) were collected throughout 2013, excluding January and December due to a fishing ban. Overall, 1010 sardine individuals were analyzed. Total body length ranged from 10.4 to 17.6 cm (mean ± SD: 13.9 ± 1.28 cm). Slightly larger individuals were caught during autumn at the beginning of the spawning season. Analysis of length-mass relationship showed that sardine specimens grow isometrically (b = 3.063). Seasonal oscillations of condition factor indicated that the examined specimens were in the best condition at the beginning of the …
An Investigation On Some Biological And Reproduction Characteristics Oferiphia Verrucosa (Forskål, 1775) In The South Black Sea (Turkey), Uğur Karadurmuş, Mehmet Aydin
An Investigation On Some Biological And Reproduction Characteristics Oferiphia Verrucosa (Forskål, 1775) In The South Black Sea (Turkey), Uğur Karadurmuş, Mehmet Aydin
Turkish Journal of Zoology
In this study, a total of 1360 specimens of Eriphia verrucosa were collected from the South Black Sea region of Turkey between February 2012 and January 2013 to determine their biological and reproductive characteristics. The overall sex ratio of all individuals was calculated as 1:0.42 (M/F). The mean carapace width was determined as 6.76, 5.57, and 5.62 cm for males, nonovigerous, and ovigerous females, respectively. The minimum and maximum weight was recorded as 4.07 and 301.4 g for both sexes. The highest correlation between morphological characteristics was determined for carapace length and crab weight in nonovigerous females (R2 = 0.973; …
Growth And Reproduction Of Cyprinion Macrostomus (Heckel, 1843) And Cyprinion Kais (Heckel, 1843) Populations In Karakaya Dam Lake (Euphrates River), Turkey, Aysel Alkan Uçkun, Di̇dem Gökçe
Growth And Reproduction Of Cyprinion Macrostomus (Heckel, 1843) And Cyprinion Kais (Heckel, 1843) Populations In Karakaya Dam Lake (Euphrates River), Turkey, Aysel Alkan Uçkun, Di̇dem Gökçe
Turkish Journal of Zoology
This study investigated the age-length relationship, length-weight relationship, somatic condition, gonadosomatic index, and reproduction properties of Cyprinion macrostomus and Cyprinion kais. C. Kais is an endemic species included on the IUCN Red List of Threatened Species in the Tigris-Euphrates Basin. A total of 153 C. Macrostomus and 114 C. Kais were collected. The estimated length-weight relationships were W = 0.725 × FL2.92 (r2 = 0.87) for C. Macrostomus and W = 0.417 × FL3.02 (r2 = 0.93) for C. Kais. The age-length relationships were Lt = 15.0 [1 - e-0.212 (t + 0.407)] and Lt = 15.4 [1 - e-0.205 …
Reproduction, Postnatal Development, And Social Behavior Of Ellobius Lutescens Thomas, 1897 (Mammalia: Rodentia) In Captivity, Alaetti̇n Kaya, Yüksel Coşkun
Reproduction, Postnatal Development, And Social Behavior Of Ellobius Lutescens Thomas, 1897 (Mammalia: Rodentia) In Captivity, Alaetti̇n Kaya, Yüksel Coşkun
Turkish Journal of Zoology
The reproduction, postnatal development, and social behaviors of the Transcaucasian mole vole (Ellobius lutescens) were studied in the laboratory in 2012/2013. The collected voles were kept in glass cages in captivity conditions and observations were made throughout the year. The litter size, gestation period, neonate weight, eye-opening, weaning, and earliest sexual maturity age were observed. Pups were born with 'nipple-seizing incisors'. These incisors were different from those of adults. The molars and normal incisor eruption appeared after 19-21 days. Females have three pairs of nipples. The adult females were bigger in size than the males, yet the males consumed more …
Assessing Age, Growth, And Reproduction Of Alburnus Mossulensis And Acanthobrama Marmid (Cyprinidae) Populations In Karakaya Dam Lake (Turkey), Aysel Alkan Uçkun, Di̇dem Gökçe
Assessing Age, Growth, And Reproduction Of Alburnus Mossulensis And Acanthobrama Marmid (Cyprinidae) Populations In Karakaya Dam Lake (Turkey), Aysel Alkan Uçkun, Di̇dem Gökçe
Turkish Journal of Zoology
In total, 626 individuals of Alburnus mossulensis and 586 individuals of Acanthobrama marmid were collected monthly from Karakaya Dam Lake on the upper Euphrates River. The gonadosomatic index, somatic condition, oocyte size, and fecundity were calculated on a monthly basis. Reading of scales indicated that the maximum age was 4+ years for A. mossulensis and A. marmid. The estimated length-weight relationships were W = 0.206 × FL^{2.065} for females and W = 0.119 × FL^{2.138} for males in A. mossulensis, and W = 0.029 × FL^{2.678} for females and W = 0.030 × FL^{2.631} for males in A. marmid. Growth …
In Vivo Embryo Production In Some Native Goat Breeds In Turkey, Ali̇ Reha Ağaoğlu, Kübra Karakaş, Mustafa Kaymaz
In Vivo Embryo Production In Some Native Goat Breeds In Turkey, Ali̇ Reha Ağaoğlu, Kübra Karakaş, Mustafa Kaymaz
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to assess the efficacy of the repeated administration of superovulatory protocol and surgical procedure in in vivo embryo production, as well as to determine the differences in the responses to superovulatory treatment among several Turkish native goat breeds (Angora, Kilis, Honamli, Hair, and Norduz). A superovulatory treatment procedure was repeated 3 times in this study. The estrus cycles were synchronized and superovulatory response was induced with porcine follicle-stimulating hormone during the natural breeding season. Natural mating was performed following CIDR removal. Embryo recovery was performed surgically on day 6, after the first mating. According …
Age, Growth, And Reproductive Biology Of Atlantic Bonito (Sarda Sarda Bloch, 1793] From The Turkish Coasts Of The Black Sea And The Sea Of Marmara, Abdullah Ekrem Kahraman, Di̇dem Göktürk, Taner Yildiz, Uğur Uzer
Age, Growth, And Reproductive Biology Of Atlantic Bonito (Sarda Sarda Bloch, 1793] From The Turkish Coasts Of The Black Sea And The Sea Of Marmara, Abdullah Ekrem Kahraman, Di̇dem Göktürk, Taner Yildiz, Uğur Uzer
Turkish Journal of Zoology
This study aims to investigate some biological characteristics of Atlantic bonito, Sarda sarda Bloch, 1793, from the Turkish coasts of the Black Sea and the Sea of Marmara. A total of 212 S. sarda (100 females, 89 males, and 23 undetermined) were sampled monthly between May 2011 and September 2012. The sex ratio (male/female) was 0.89; females prevailed but not statistically significantly so. Fork lengths of all sampled individuals ranged from 17.7 to 63.0 cm. The length-weight relationship for all individuals was calculated as W = 0.01 L^{3.085}. The ages of the fish ranged from 0+ to 2+. Growth parameters …
General Reproductive Properties In Pigs, İrfan Tur
General Reproductive Properties In Pigs, İrfan Tur
Turkish Journal of Veterinary & Animal Sciences
Pig breeding is usually undertaken for fat and meat production, but different sectors (cosmetics industry, pharmaceutical industry, medical sector, etc.) can also use pigs for alternate purposes. Pork is evaluated based on the status of an amended law regarding butchers' meat in Turkey. There have been 25 pig farms registered in Turkey since 7 July 2006 in the framework of compliance with the European Union. On average, a sow has 2.3 farrowings per year, producing 9.5 to 12.5 piglets per litter. It is important that high proportions of selected replacement gilts reach puberty at an early age in order to …
The Effect Of Selenized Yeast Supplementation On Some Performance Parameters In Sheep, Bogumila Pilarczyk, Agnieszka Tomza-Marciniak, Zbigniew Dobrzanski, Malgorzata Szewczuk, Tomasz Stankiewicz, Dariusz Gaczarzewicz, Wlodzimierz Lachowski
The Effect Of Selenized Yeast Supplementation On Some Performance Parameters In Sheep, Bogumila Pilarczyk, Agnieszka Tomza-Marciniak, Zbigniew Dobrzanski, Malgorzata Szewczuk, Tomasz Stankiewicz, Dariusz Gaczarzewicz, Wlodzimierz Lachowski
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to determine the levels of serum selenium in coarse-haired Pomeranian sheep and to evaluate the effect of the oral supplementation of selenized yeast on selected performance parameters in such sheep. The sheep were divided into 2 groups, with 53 ewes forming the experimental group and 34 ewes forming the control group. The concentration of serum selenium in all 87 sheep from the 2 groups was analyzed. The sheep in the experimental group received selenized yeast for the 3 days before and 3 days after mating (1 g preparation/animal daily, with 1 g of preparation …
Growth And Reproduction Of Brown Comber (Serranus Hepatus Linnaeus, 1758) In The Central Aegean Sea, Turkey, Ozan Soykan, Akin Türker İlkyaz, Gülnur Meti̇n, Hasan Tuncay Kinacigi̇l
Growth And Reproduction Of Brown Comber (Serranus Hepatus Linnaeus, 1758) In The Central Aegean Sea, Turkey, Ozan Soykan, Akin Türker İlkyaz, Gülnur Meti̇n, Hasan Tuncay Kinacigi̇l
Turkish Journal of Zoology
The growth and reproduction of brown comber (Serranus hepatus Linnaeus, 1758) were studied using specimens collected from the central Aegean Sea between July 2004 and June 2007. A total of 2410 specimens were analyzed, and of those, 2290 individuals were mature and 120 individuals were juvenile. Analyses covered all individuals because the species is a simultaneous hermaphrodite. The length-weight relationship was determined as W = 0.013L^{3.11}, indicating a positive allometric growth for all samples. The estimated von Bertalanffy growth parameters were L_{\infinity} = 13.19 cm, k = 0.252 y^{-1}, and t_o = -0.630 y, and the infinite weight (W_{\infinity}) was …
Evaluation Of The Possibility Of Using Oligosaccharide-Free Pea In Japanese Quail Nutrition, Danuta Szczerbinska, Zofia Tarasewicz, Piotr Gulewicz, Danuta Majewska, Marek Ligocki
Evaluation Of The Possibility Of Using Oligosaccharide-Free Pea In Japanese Quail Nutrition, Danuta Szczerbinska, Zofia Tarasewicz, Piotr Gulewicz, Danuta Majewska, Marek Ligocki
Turkish Journal of Veterinary & Animal Sciences
In this paper, evaluation of the effect of processed pea seeds (free of raffinose family oligosaccharides) on the performance traits and the results of reproduction in Japanese quails is presented. A flock of 72 quails was divided into 3 groups consisting of equal numbers of birds (18 females and 6 males). Birds were kept in cages in an environmentally controlled room with a lighting cycle of 17 h of light and 7 h of dark, and they were fed 1 of 3 different diets. Whereas diet 1 served as the control, diet 2 was supplemented with 5% and diet 3 …
On The Life History Of Spirlin Alburnoides Bipunctatus (Bloch, 1782) In The Qanat Of Uzineh, Northern Iran, Rahman Patimar, Mohsen Zare, Mehdi Hesam
On The Life History Of Spirlin Alburnoides Bipunctatus (Bloch, 1782) In The Qanat Of Uzineh, Northern Iran, Rahman Patimar, Mohsen Zare, Mehdi Hesam
Turkish Journal of Zoology
Within the wide distribution of spirlin in Iran, populations of this species inhabit a great variety of habitats, including qanats. We hypothesized that qanats may contribute to habitat-specific variation in the life history of the fish. To test this, a total of 240 specimens of Alburnoides bipunctatus, caught in the qanat of Uzineh (northern Iran) from October 2007 to August 2008, were examined for life history attributes. The population had a 5-year life cycle. The weight-length relationship (WLR) was estimated as W = 0.0068TL^{3.2559} for males, W = 0.0079TL^{3.2067} for females, and W = 0.0072TL^{3.2387} for the population, having a …
Reproduction Of The Root Vole (Microtus Oeconomus) At The Edge Of Its Distribution Range, Linas Balciauskas, Laima Balciauskiene, Agne Janonyte
Reproduction Of The Root Vole (Microtus Oeconomus) At The Edge Of Its Distribution Range, Linas Balciauskas, Laima Balciauskiene, Agne Janonyte
Turkish Journal of Zoology
Data on the reproduction of the root vole (Microtus oeconomus) in Lithuania, the margin of its geographic range, are presented in the context of litter size analysis. In Lithuania, the breeding season lasts from April until the end of October. The average litter size was 5.93 ± 0.11 (2-14), decreasing from a mean of 8.0 embryos in June to 4.3 in October, with 2-3 litters per year. The average body mass of breeding females was 40.4 ± 0.6 (16.5-77.0) g. However, 6.25% of females start breeding with a body mass of under 25 g. Litter size was found to increase …
The Reproductive Performance Of Wild And Hatchery-Reared Flounder, Platichthys Flesus Luscus, In The Southern Black Sea Coast, İlhan Aydin, Temel Şahi̇n, Hamza Polat, Erdi̇nç Güneş
The Reproductive Performance Of Wild And Hatchery-Reared Flounder, Platichthys Flesus Luscus, In The Southern Black Sea Coast, İlhan Aydin, Temel Şahi̇n, Hamza Polat, Erdi̇nç Güneş
Turkish Journal of Zoology
The spawning period, total fecundity, egg size, and fertilization and hatching rates of wild and hatchery-reared flounder, Platichthys flesus luscus, are investigated in this report. Wild and hatchery-reared broodstock consisted of 18 females (452.8 ± 193.2 g) and 17 females (138.9 ± 47.4 g), respectively. The spawning period lasted 79 days, from 22 January to 10 April. Mean total fecundity was 285 ± 157.9 × 10^3 per female for wild broodstock while it was 115.6 ± 53.6 × 10^3 eggs for hatchery-reared broodstock. The fertilization and hatching rates were 38.2 ± 17.0% and 62.3 ± 24.1% for wild and 45.3 …
Growth, The Length-Weight Relationship, And Reproduction In Vimba (Vimba Vimba L. 1758) Sampled From An Oligo-Mesotrophic Lake In Northwest Anatolia (Turkey), Hacer Okgerman, Mahmut Elp, Cumhur H. Yardimci
Growth, The Length-Weight Relationship, And Reproduction In Vimba (Vimba Vimba L. 1758) Sampled From An Oligo-Mesotrophic Lake In Northwest Anatolia (Turkey), Hacer Okgerman, Mahmut Elp, Cumhur H. Yardimci
Turkish Journal of Zoology
The growth parameters and reproduction period in vimba (Vimba vimba L. 1758) sampled from Sapanca Lake were determined monthly between September 2003 and July 2004. The 335 vimba specimens caught ranged in age from 2^+ to 6^+ years, and the majority of the samples consisted of individuals of the 4^{+}-year-old age group. The length-weight relationship was estimated to be W = 0.0084 FL^{3.1797±0.0035} for males (r^2 = 0.94, P < 0.05) and W = 0.0089 FL^{3.1572±0.0033} for females (r^2 = 0.93, P < 0.05). Regression coefficients for sex were significant (t-test, P < 0.05). The slope (b) significantly differed (ANCOVA, P < 0.05) between months. The fact that the b values for male and female vimba specimens differed from 3.0 indicates that there was positive allometric growth. The von Bertalanffy equation was determined using Lt = 28.940 (1-exp {-0.123[t+2.193]}), \phi': 2.030, (r = 0.999) for males and Lt = 24.708 [1-exp {-0.205[t+1.464]}), \phi': 2.097, (r = 0.999) for females. The sex ratio was 1:1.86 (\chi^2; P < 0.05). The spawning period of vimba began at the end of April and continued until the beginning of July; the water temperature during this period was between 14.8 and 25.9 °C.
Reproductive Performance Of Turbot (Psetta Maxima) In The Southeastern Black Sea, İlhan Aydin, Temel Şahi̇n
Reproductive Performance Of Turbot (Psetta Maxima) In The Southeastern Black Sea, İlhan Aydin, Temel Şahi̇n
Turkish Journal of Zoology
Spawning time, total fecundity, fertilization, and hatching rates of turbot (Psetta maxima) were investigated in 10 wild female broodstock (mean wt: 3809.7 ± 1238.4 g). Spawning lasted 37 days, from April 17 to May 23. Mean total fecundity was 2329 ± 1260 x 10^3 eggs per female. Fertilization and hatching rates were 30.6 ± 25.4% and 17.9 ± 16.1%, respectively. A significant positive correlation was observed between body weight and total fecundity (r = 0.637, P < 0.05). The timing and frequency of hand stripping, fecundity, fertilization, and hatching rates in turbot are presented.
Age, Growth And Reproduction Of Four-Spotted Goby, Deltentosteus Quadrimaculatus (Valenciennes, 1837), In İzmir Bay (Central Aegean Sea), Gülnur Meti̇n, Akin Türker İlkyaz, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Age, Growth And Reproduction Of Four-Spotted Goby, Deltentosteus Quadrimaculatus (Valenciennes, 1837), In İzmir Bay (Central Aegean Sea), Gülnur Meti̇n, Akin Türker İlkyaz, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Turkish Journal of Zoology
Length distribution, sex ratio, length-weight relationship, age, growth, spawning period, age, and length at first maturity of four-spotted goby inhabiting İzmir Bay were investigated. A total of 1696 four-spotted goby were collected by trawl hauls between July 2004 and June 2007. The size of the fish sampled ranged from 3.1 to 9.2 cm total length. The samples were composed of 31.1% females, 27.7% males, and 41.2% juvenile individuals, with a female to male ratio of 1:0.89. The age of the fish ranged from 1 to 5 years. The length-weight relationship and the von Bertalanffy growth function were estimated for all …
Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki
Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki
Turkish Journal of Zoology
The Caspian Sea forms the southern limit of the distribution range of the three-spined stickleback (Gasterosteus aculeatus), but little is known about its life history in this area. A total of 362 specimens were collected from the Gomishan wetland (southeast Caspian Sea, Iran) to describe the stickleback's life history characteristics. Samples were taken monthly between February and July of 2008. The maximum ages of the population observed were 2+ years for males and 3+ years for females. The length-weight relationship (LWR) was estimated as W = 0.0042TL^{3.711} for immature specimens, W = 0.0095TL^{3.1328} for males, and W = 0.0057TL^{3.4678} for …
Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Turkish Journal of Zoology
Age, growth, and reproduction of the large-scaled gurnard were studied in the central Aegean Sea to provide fisheries managers with the essential data for science-based management. A total of 2342 samples were collected by trawl hauls between July 2004 and June 2007 from İzmir Bay (Turkey). The size of the samples ranged from 3.4 to 15.2 cm total length and the samples were composed of 35.2% females, 25.7% males and 39.1% immature individuals, with a female to male ratio of 1:0.73. The length-weight relationship was calculated as W = 0.0086L^{3.16} for all samples. The age composition of the samples was …
Age, Growth, Length-Weight Relationship And Reproduction Of The Striped Seabream (Lithognathus Mormyrus L., 1758) (Sparidae) In The Beymelek Lagoon (Antalya, Turkey), Yilmaz Emre, İsmet Balik, Çeti̇n Sümer, D. Aytuğ Oskay, H. Özgür Yeşi̇lçi̇men
Age, Growth, Length-Weight Relationship And Reproduction Of The Striped Seabream (Lithognathus Mormyrus L., 1758) (Sparidae) In The Beymelek Lagoon (Antalya, Turkey), Yilmaz Emre, İsmet Balik, Çeti̇n Sümer, D. Aytuğ Oskay, H. Özgür Yeşi̇lçi̇men
Turkish Journal of Zoology
Age, growth, length-weight relationship and reproduction were investigated for striped seabream (Lithognathus mormyrus L., 1758) collected from Beymelek Lagoon (Antalya, Turkey) between February 2006 and January 2007. The ages of striped seabream ranged from 0 to 3 years for males and from 0 to 4 years for females. Their total lengths and weights ranged between 14.4 and 26.4 cm and 42 and 297 g for males and 14.3 and 27.4 cm and 40 and 329 g for females, respectively. The growth parameters of the von Bertalanffy equation were: L_{\infinity} = 28.3 cm, K = 0.456 year^{-1} and t_0 = -1.859 …
Growth And Reproduction Of Blotched Picarel (Spicara Maena Linnaeus, 1758) In The Central Aegean Sea, Turkey, Ozan Soykan, Akin Türker İlkyaz, Gülnur Meti̇n, Hasan Tuncay Kinacigi̇l
Growth And Reproduction Of Blotched Picarel (Spicara Maena Linnaeus, 1758) In The Central Aegean Sea, Turkey, Ozan Soykan, Akin Türker İlkyaz, Gülnur Meti̇n, Hasan Tuncay Kinacigi̇l
Turkish Journal of Zoology
Growth and reproduction of the blotched picarel, Spicara maena (Linnaeus, 1758), were determined based on specimens (n = 2547) collected from the central Aegean Sea between July 2004 and June 2007. The samples consisted of 71.9% females, 16.2% males, and 11.9% immature individuals. The sex ratio of females to males was 1:0.23. The length-weight relationship was W = 0.011L^{3.02}, W = 0.011L^{3.00}, and W = 0.011L^{2.99} for the combined sexes, females, and males, respectively. For all samples and both sexes the length-weight relationship showed isometric growth. The von Bertalanffy growth equation was fitted on the basis of mean length-at-age data, …
Associations Between Ghr And Igf-1 Gene Polymorphisms, And Reproductive Traits In Wenchang Chickens, Hui Fang Li, Wen Qi Zhu, Kuan Wei Chen, Xu Wu, Qing Ping Tang, Yu Shi Gao
Associations Between Ghr And Igf-1 Gene Polymorphisms, And Reproductive Traits In Wenchang Chickens, Hui Fang Li, Wen Qi Zhu, Kuan Wei Chen, Xu Wu, Qing Ping Tang, Yu Shi Gao
Turkish Journal of Veterinary & Animal Sciences
Alleles of physiological candidate genes for reproductive traits, insulin-like growth factor-1 (IGF-1), and growth hormone receptor (GHR) were assessed to determine their associations with total egg production (NE), average days of continual egg-laying (ADCE), and number of double yolk eggs (DYE) in Wenchang chickens (Chinese indigenous breed). PCR-RFLP was used for genotype identification. The frequency of restriction enzyme C1/C2 alleles in the population was 0.53 (C1) and 0.47 (C2) for IGF-1. For GHR-intron 2 it was 0.06 and 0.94 for (A1) and (A2), respectively, while for GHR-intron 5 it was 0.20 (B1) and 0.80 (B2). Four significant associations were found …
Growth, Mortality, And Reproduction Of Poor Cod (Trisopterus Minutus Linn., 1758) In The Central Aegean Sea, Gülnur Meti̇n, Akin Türker İlkyaz, Hasan Tuncay Kinacigi̇l
Growth, Mortality, And Reproduction Of Poor Cod (Trisopterus Minutus Linn., 1758) In The Central Aegean Sea, Gülnur Meti̇n, Akin Türker İlkyaz, Hasan Tuncay Kinacigi̇l
Turkish Journal of Zoology
A total of 1527 of poor cod (Trisopterus minutus Linn., 1758) were collected by trawl hauls between April 2001 and March 2002 from İzmir Bay (central Aegean Sea). The size of the fish (total length) ranged from 10.6 cm (minimum, September) and 24.8 cm (April). The population was composed of 53% males, 41% females, and 6% immature individuals, with a female to male ratio of 1:1.3. The age composition of the samples was from I to V. The von Bertalanffy growth parameters were L_{\infinity} = 28.1 cm, W_{\infinity} = 254.0 g, K = 0.26 y^{-1}, and t_{o} = -1.52 y. …