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Articles 1 - 30 of 59
Full-Text Articles in Life Sciences
Research On The Herpetofauna Of Murat Mountain (Kütahya-Uşak), Adem Özdemi̇r, İbrahi̇m Baran
Research On The Herpetofauna Of Murat Mountain (Kütahya-Uşak), Adem Özdemi̇r, İbrahi̇m Baran
Turkish Journal of Zoology
In this study, the amphibians and reptilians of Murat Mountain, where only mountain frogs have been investigated so far, are introduced. A total of 99 specimens from 15 different species were collected. Four of the species belong to anurans, one belongs to tortoises, six belong to lizards and four belong to the snakes group.
Cladocera And Copepoda (Crustacea) Fauna Of Lake Terkos (Durusu), Hüseyi̇n Güher
Cladocera And Copepoda (Crustacea) Fauna Of Lake Terkos (Durusu), Hüseyi̇n Güher
Turkish Journal of Zoology
Field studies were conducted by taking samples vertically and horizontally during a specific period of each month between April 2000 and March 2001 in Lake Terkos. A total of 28 species belonging to six families of Cladocera and 13 species from seven families of Copepoda are identified. Their known geographical distribution in Turkey have been given according to provinces.
Two Macrochelid Species (Acari: Gamasida: Macrochelidae) New To Turkish Fauna, Ali̇ Nafi̇z Eki̇z, Raşi̇t Urhan
Two Macrochelid Species (Acari: Gamasida: Macrochelidae) New To Turkish Fauna, Ali̇ Nafi̇z Eki̇z, Raşi̇t Urhan
Turkish Journal of Zoology
Two macrochelid species, Macrocheles (Glyptholaspis) americana and M. (G.) fimicola, which are new to Turkish fauna, are examined. The morphological characters of these species are reviewed and figures are drawn. Moreover, their zoogeographical distributions and habitats are given.
Cephalopod Fauna Of The Eastern Mediterranean, Alp Salman, Tuncer Katağan, Hüseyi̇n Avni̇ Benli̇
Cephalopod Fauna Of The Eastern Mediterranean, Alp Salman, Tuncer Katağan, Hüseyi̇n Avni̇ Benli̇
Turkish Journal of Zoology
Studies on the cephalopods of Turkish coasts have been going on since 1988. As a result of these studies, a total of 43 species have been determined, comprising 11 species from the Sea of Marmara, 38 from the Aegean Sea and 24 from the Mediterranean Sea. With respect to other studies carried out excluding Turkish coasts, the eastern Mediterranean cephalopod fauna has increased to 51 species. Among the species determined, Ancistrocheirus lesueurii and Ancistroteuthis lichtensteini are new records for the eastern Mediterranean; Sepietta obscura, Ancistrocheirus lesueurii, Ancistroteuthis lichtensteini and Tremoctopus violaceus for the Aegean Sea; and Alloteuthis media, Rossia macrosoma …
Effects Of Antimicrobial Agents On The Survival And Development Of Larvae Of Pimpla Turionellae L. (Hymenoptera: Ichneumonidae) Reared On An Artificial Diet, Kemal Büyükgüzel, Şevki̇ Yazgan
Effects Of Antimicrobial Agents On The Survival And Development Of Larvae Of Pimpla Turionellae L. (Hymenoptera: Ichneumonidae) Reared On An Artificial Diet, Kemal Büyükgüzel, Şevki̇ Yazgan
Turkish Journal of Zoology
The effects of 13 antimicrobial agents that have different structures and modes of action, on the survival and development of the hymenopterous endoparasitoid, Pimpla turionellae L., were investigated by rearing the larvae aseptically on chemically defined synthetic diets. These effects varied according to their kind and dietary levels. The agents tested exerted their effects generally during the post-larval development of the insect. The post-larval survival and development were negatively affected by most of the agents tested at certain levels. The antimicrobial agents tested also affected the larval development but had no significant effects on the larval survival of the insect. …
Degradation Products Of Adenine Nucleotide In Rainbow Trout (Oncorhynchus Mykiss) Stored In Ice And In Modified Atmosphere Packaging, Yeşi̇m Özoğul, Fati̇h Özoğul
Degradation Products Of Adenine Nucleotide In Rainbow Trout (Oncorhynchus Mykiss) Stored In Ice And In Modified Atmosphere Packaging, Yeşi̇m Özoğul, Fati̇h Özoğul
Turkish Journal of Zoology
The breakdown products of adenosine triphosphate (ATP) were separated using a rapid HPLC method. The K-value, Ki-value and H-value were also determined as a means of evaluating the quality of rainbow trout held in ice and modified atmosphere packaging comparing with sensory and microbiological analysis in terms of fresh fish quality. Results from the present research indicated that modified atmosphere did not extend the shelf life of trout but inhibited microbial growth compared to ice storage. However, there was no significant difference (P>0.05) between the two conditions. K and Ki-values provided a useful freshness index of fish for both …
Effect Of Temperature Change On Maximum Swimming Speed Of Whiting, Merlangius Merlangus (Linnaeus, 1758), Hüseyi̇n Özbi̇lgi̇n
Effect Of Temperature Change On Maximum Swimming Speed Of Whiting, Merlangius Merlangus (Linnaeus, 1758), Hüseyi̇n Özbi̇lgi̇n
Turkish Journal of Zoology
Seasonal changes in sea temperature levels affect the swimming performance of fish. This study investigates if a change of 5°C from 7 to 12°C in water temperature has a significant effect on the maximum swimming performance of whiting, Merlangius merlangus, which is one of the most common species caught in the bottom trawl fisheries of the North Sea. The effect of this seasonal change on swimming performance was shown by two experiments. A temperature increase from 7°C to 12°C was shown to cause a decrease in the minimum twitch contraction time of the lateral muscle, when stimulated by an electric …
First Records Of Oreodytes Seidlitz, 1887 (Dytiscidae, Coleoptera) From Turkey: Oreodytes Septentrionalis (Gyllenhal, 1826) And Oreodytes Davisii (Curtis, 1831), Ömer Köksal Erman, Orhan Erman
First Records Of Oreodytes Seidlitz, 1887 (Dytiscidae, Coleoptera) From Turkey: Oreodytes Septentrionalis (Gyllenhal, 1826) And Oreodytes Davisii (Curtis, 1831), Ömer Köksal Erman, Orhan Erman
Turkish Journal of Zoology
Oreodytes septentrionalis (Gyllenhal, 1826) and Oreodytes davisi (Curtis, 1831) are recorded in Turkey for the first time and are reviewed according to our specimens and their distributions around the world.
Androgenesis: The Best Tool For Manipulation Of Fish Genomes, Minal P. Bhise, Tariq A. Khan
Androgenesis: The Best Tool For Manipulation Of Fish Genomes, Minal P. Bhise, Tariq A. Khan
Turkish Journal of Zoology
Androgenesis involves the development of an organism with only paternal chromosomes. The induction of androgenesis using diploid sperm, highly effective UV-irradiation of egg, dispermy using heterologous eggs, the possibility of producing supermales for all male production and the recovery of cryopreserved sperm are recent technological developments in androgenesis in fish. However, few researchers have successfully produced viable diploid androgens in fish. The authors made an attempt to induce androgenesis in the common carp (Cyprinus carpio L.) and the results are discussed along with the potential applications of androgenesis in conserving fish genomes and current knowledge on inducing androgenesis in fish.
Chelonus Jurine (Hymenoptera: Braconidae: Cheloninae) Species Of The Marmara Region, Mi̇tat Aydoğdu, Ahmet Beyarslan
Chelonus Jurine (Hymenoptera: Braconidae: Cheloninae) Species Of The Marmara Region, Mi̇tat Aydoğdu, Ahmet Beyarslan
Turkish Journal of Zoology
The genus Chelonus Jurine (Hymenoptera: Braconidae: Cheloninae) species in the Marmara region of Turkey are defined, 12 species recorded and a key to species is provided. Of these species, Chelonus asiaticus Telenga, Chelonus bidens Tobias, Chelonus canescens Wesmael, Chelonus microsomus Tobias, Chelonus oculator (Panzer), Chelonus ocellatus Alexeev, Chelonus scabrator (Fabricius), Chelonus smirnovi Telenga, Chelonus szepligetii Dalla Torre, Chelonus tuberculifer Tobias, and Chelonus varimaculatus Tobias are new records for Turkey and Chelonus inanitus (Linnaeus) is a new record for the Marmara region of Turkey.
Pulluterina Karachiensis Sp.N. (Cestoda: Anaplocephalidae) From The Wild Pigeon Columba Livia Gmelin, Rafia Rehana Ghazi, Nasira Khatoon, Sofia Mansoor, Fatima Mujib Bilqees
Pulluterina Karachiensis Sp.N. (Cestoda: Anaplocephalidae) From The Wild Pigeon Columba Livia Gmelin, Rafia Rehana Ghazi, Nasira Khatoon, Sofia Mansoor, Fatima Mujib Bilqees
Turkish Journal of Zoology
A new species, Pulluterina karachiensis, is described from the common pigeon Columba livia Gmelin in Karachi. The new species is characterized by possessing small suckers; a longer neck; fewer testes, smaller in size, and the comparatively smaller size of ova. This is the second species of the genus from Pakistan and third in the literature.
The Species Of Tryphoninae (Hymenoptera: Ichneumonidae) In Turkish Thrace, Murat Yurtcan, Ahmet Beyarslan
The Species Of Tryphoninae (Hymenoptera: Ichneumonidae) In Turkish Thrace, Murat Yurtcan, Ahmet Beyarslan
Turkish Journal of Zoology
This study was carried out to investigate the species of the subfamily Tryphoninae (Hymenoptera: Ichneumonidae) in Turkish Thrace between 1992 and 1994. A total of 89 samples were collected from 42 localities and 26 species belonging to 11 genera were determined. Diagnostic keys to the species, subgenera and genera were prepared. In order to distinguish morphological characters that were mentioned in the keys, 31 original figures are given. Of these species, Phytodietus polyzonias (Foerster), Netelia (Prosthodocis) japonicus (Uchida), N. (Bessobates) cristatus (Thomson), N. (Netelia) ocellaris (Thomson), N. (Netelia) rufescens (Tosquinet), Neleges proditor (Gravenhorst), Dyspetes arrogator Heinrich, Ctenochira angulata (Thomson), Exyston …
Detection Of Mutagenic-Carcinogenic Pollutants In Aquatic Systems Using Cytogenetic Methods In Fish, Mehmet Ulupinar, İbrahi̇m Okumuş
Detection Of Mutagenic-Carcinogenic Pollutants In Aquatic Systems Using Cytogenetic Methods In Fish, Mehmet Ulupinar, İbrahi̇m Okumuş
Turkish Journal of Zoology
In this study, the detection of mutagenic-carcinogenic pollutants in water by using cytogenetic methods in fish was examined along with the necessity of sister chromatid exchange (SCE), anaphase aberrations (AA) and micronucleus (MN) tests for chemical analysis in aquatic systems. It has been reported that central mudminnow (Umbra limi) appear to be the most suitable species for such analysis because of its large and fewer chromosomes (2n=22) and high cell division ratio. This species also has a wide distribution, and can be easily captured and held for study. In such analysis, intestines, stomach, kidney and gill tissues stand out as …
Floral Choices, Parasites And Micro-Organisms In Natural Populations Of Bumblebees (Apidae: Hymenoptera) In Ankara Province, Ahmet Murat Ayteki̇n, Neşe Çağatay, Selçuk Hazir
Floral Choices, Parasites And Micro-Organisms In Natural Populations Of Bumblebees (Apidae: Hymenoptera) In Ankara Province, Ahmet Murat Ayteki̇n, Neşe Çağatay, Selçuk Hazir
Turkish Journal of Zoology
In this study, the flower choices of different bumblebee species in Ankara province regarding their associations among various parasites and micro-organisms were determined. A total of 21 different species of the genera Bombus Latreille and Psithyrus Lepeletier were examined. The motile hypopus of the mite species Acarus farris (Oudemans, 1905) (Acaridae) was found to be phoretic on Bombus (Bombus) terrestris, Megabombus (Megabombus) argillaceus, Megabombus (Thoracobombus) zonatus and Pyrobombus (Sibiricobombus) niveatus queens. Nosema bombi was also determined to be an internal parasite of B. terrestris. Finally, a nematode species belonging to the family Allantonematidae (Tylenchida) was isolated from Megabombus (Thoracobombus) sylvarum …
Antimicrobial Agents: Their Combined Effects On Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel
Antimicrobial Agents: Their Combined Effects On Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel
Turkish Journal of Zoology
The effects of some antibiotics and antifungal agents in combination on the total protein content of young pupae of the hymenopterous endoparasitoid, Pimpla turionellae L., were investigated by rearing the larvae aseptically on chemically defined synthetic diets. These effects varied with the kinds and levels of the combination of antimicrobial agents in the diets. The combinations of antibiotics generally increased the total protein content according to their individual levels in the diets. Antifungal agent combinations caused a slight but significant increase in the total protein content. However, some tested combinations of nystatin with methyl p-hydroxybenzoate or cycloheximide significantly decreased the …
Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat
Relative Importance Of Food Items In Feeding Of Chondrostoma Regium Heckel, 1843, And Its Relation With The Time Of Annulus Formation, Aysun Gümüş, Mahmut Yilmaz, Nazmi̇ Polat
Turkish Journal of Zoology
In this study, we analyzed the relative importance of food items of Chondrostoma regium Heckel, 1843. A total of 145 individuals were sampled between April 1993 and March 1994 in Suat Uğurlu Dam Lake. Stomach content analysis was used to determine dietary composition. Relative measures of food item quantity were estimated by two different approaches: the Index of Relative Importance (IRI) and the Geometric Index of Importance (GII). The results from these indices were compared and the most reliable way of estimating dietary composition was discussed. Navicula, Cymbella and Synedra were the most frequently consumed organisms. As C. regium mostly …
The Occurrence Of The Rumen Ciliate Metadinium Banksi Dehority, 1985 (Ophryoscolecidae, Entodiniomorphida) From Domestic Goats (Capra Hircus L.) In Southeastern Turkey, Bayram Göçmen, Burk A. Dehority, Sami̇ye Rastgeldi̇
The Occurrence Of The Rumen Ciliate Metadinium Banksi Dehority, 1985 (Ophryoscolecidae, Entodiniomorphida) From Domestic Goats (Capra Hircus L.) In Southeastern Turkey, Bayram Göçmen, Burk A. Dehority, Sami̇ye Rastgeldi̇
Turkish Journal of Zoology
Metadinium banksi was observed in rumen contents from a single goat out of eight living in southeastern Turkey. It constituted 0.25% of the total ciliate population and had a 12.5% frequency of appearance. The size and percentage occurrence of this species in the present study are compared to those previously reported for other animal hosts living in different geographical locations. This study reports for the first time in Turkey the presence of Metadinium banksi in arctic ruminants.
A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan
A New Record Of A Water Mite (Acari, Hydrachnellae) For The Turkish Fauna: Gnaphiscus Setosus Koenike, 1898, Ahmet Bursali, Muhli̇s Özkan
Turkish Journal of Zoology
The morphological characters and geographical distribution of Gnaphiscus setosus Koenike, 1898, a new record for the Turkish fauna, are given.
New Distributional Records For Rana Bedriagae Caralitana In Anatolia, Uğur Kaya, İ. Ethem Çevi̇k, Uğur C. Eri̇şmi̇ş
New Distributional Records For Rana Bedriagae Caralitana In Anatolia, Uğur Kaya, İ. Ethem Çevi̇k, Uğur C. Eri̇şmi̇ş
Turkish Journal of Zoology
We conducted a herpetofaunal survey on the southern part of the Lake District in Anatolia searching and documenting new sites for herptile species. During the two years of our study three new sites, Gencek Lake (Derebucak/Konya), Derebucak (Konya) and Tınaztepe (Seydişehir/Konya), were recorded for Rana bedriagae caralitana. Of these, the two southernmost records extend the distribution of these subspecies in the Lake District of Anatolia.
Some Rumen Ciliates (Isotrichidae, Trichostomatida; Epidininae, Ophryoscolecidae) Of The Domestic Goat (Capra Hircus L.) In Turkey, Bayram Göçmen, Mehmet Kutsay Atatür
Some Rumen Ciliates (Isotrichidae, Trichostomatida; Epidininae, Ophryoscolecidae) Of The Domestic Goat (Capra Hircus L.) In Turkey, Bayram Göçmen, Mehmet Kutsay Atatür
Turkish Journal of Zoology
Rumen contents obtained from domesticated goats (Capra hircus L.) slaughtered at abattoirs in the vicinity of Adana were surveyed for holotrichous ciliate protozoans and the genus Epidinium. The presence of two holotrichous ciliate genera including three species (Isotricha prostoma, I. intestinalis and Dasytricha ruminantium) and also of seven formae of Epidinium ecaudatum (E. e. f. ecaudatum, E. e. f. caudatum, E. e. f. bicaudatum, E. e. f. tricaudatum, E. e. f. quadricaudatum, E. e. f. parvicaudatum and E. e. f. cattanei) were established. The mean ciliate density in our surveyed goats, 34.62x10^4 cells/ml, was lower than those of domestic sheep …
The Ephemeroptera (Insecta) Fauna Of Lake Ulubat Basin, Mustafa Tanatmiş
The Ephemeroptera (Insecta) Fauna Of Lake Ulubat Basin, Mustafa Tanatmiş
Turkish Journal of Zoology
In this study, 1812 Ephemeroptera nymphs were collected in order to determine the Ephemeroptera fauna of Lake Ulubat Basin between April 1996 and September 1999. The distribution of 38 species belonging to 22 genera and 10 families is presented. Among these, the genus Brachycercus Curtis, 1834 and the species Brachycercus harrisella Curtis, 1834 are recorded in Turkey for the first time. In addition, previous records on the distribution of all 38 species in Turkey are given.
An Investigation On Fish Fauna Of The River Mert (Samsun), Selma Uğurlu (Helli̇), Nazmi̇ Polat
An Investigation On Fish Fauna Of The River Mert (Samsun), Selma Uğurlu (Helli̇), Nazmi̇ Polat
Turkish Journal of Zoology
This study was carried out between May 1999 and June 2000 in order to determine the fish species of the River Mert. In total, 244 individuals from different sampling stations were caught by electric shock, scoop nets, fish nets and fishing lines. In this study, 3 species and 2 subspecies were identified as belonging to 3 families (Cyprinidae, Cobitidae, Gobiidae). The systematic characteristics of fish species were explained. These characteristics were then compared with those in previous studies, and keys to identification were also presented.
Effects Of Some Antimicrobial Agents On The Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel
Effects Of Some Antimicrobial Agents On The Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel
Turkish Journal of Zoology
The effects of thirteen antimicrobial agents that have different structures and modes of action on the total protein content of pupae of the hymenopterous endoparasitoid, Pimpla turionellae L., were investigated by rearing the larvae aseptically on chemically defined synthetic diets. These effects varied according to the their kind and dietary levels. The protein content of the pupae was significantly increased by penicillin, streptomycin, rifampicin, tetracycline hydrochloride, lincomycin hydrochloride, methyl p-hydroxybenzoate, cycloheximide and sodium benzoate, while it was decreased by nystatin. The other tested antimicrobial agents had no significant effects on the total protein content of the insect. Depending on dietary …
Faunistic Studies On The Species Pachybrachis Chevrolat And Cryptocephalus Geoffroy (Coleoptera, Chrysomelidae, Cryptocephalinae) Of Dedegöl Mountains (Isparta), Ali̇ Gök
Turkish Journal of Zoology
The material of the subfamily Cryptocephalinae collected from Dedegöl Mountains (Isparta) between 1996 and 1998 consisted of 21 species belonging to the genera Pachybrachis and Cryptocephalus. A diagnostic key and distribution records for the species are presented. The species except for Cryptocephalus bipunctatus (L.), C. turcicus Suffrian, C. connexus Olivier, Pachybrachis limbatus (Menetries), P. fimbriolatus (Suffrian) and P. tessellatus orientalis Weise are new for Isparta.
Effects Of Some Dna Gyrase Inhibitors On The Survival And Development Of Pimpla Turionellae (Hymenoptera: Ichneumonidae) Larvae Reared On An Artificial Diet, Kemal Büyükgüzel
Effects Of Some Dna Gyrase Inhibitors On The Survival And Development Of Pimpla Turionellae (Hymenoptera: Ichneumonidae) Larvae Reared On An Artificial Diet, Kemal Büyükgüzel
Turkish Journal of Zoology
The effects of novobiocin, nalidixic and oxolinic acids, which are potent antibacterial agents, on the survival and development of the hymenopterous endoparasitoid Pimpla turionellae L. were investigated alone by rearing the larvae aseptically on chemically defined synthetic diets. The percentage of fifth instar larvae was not significantly affected by the diets with different levels of the antibiotics used in the study. A diet containing the lowest level of novobiocin significantly increased the yields of pupae and adults. This level also significantly shortened the developmental time for fifth instar, but had no significant effect on the complete development of the larvae …
Range Extension Of Caridina Weberi Sumatrensis De Man, 1892 (Decapoda, Caridea, Atyidae) To Sindh Waters (Karachi, Pakistan), Quddusi̇ Bashi̇r Kazmi̇, Feroz Akhtar Siddiqui, Mohammad Afzal Kazmi̇
Range Extension Of Caridina Weberi Sumatrensis De Man, 1892 (Decapoda, Caridea, Atyidae) To Sindh Waters (Karachi, Pakistan), Quddusi̇ Bashi̇r Kazmi̇, Feroz Akhtar Siddiqui, Mohammad Afzal Kazmi̇
Turkish Journal of Zoology
A freshwater atyid Caridina weberi sumatrensis is being reported for the first time from Sindh waters. This report from Karachi is evidently at the margin of its range.
Level Of Lactate Dehydrogenase (Ldh) In Resistant And Susceptible Strains Of Culicine Mosquitoes Of The Karachi Region After Treatment With Ddt, Malathion And Cyfluthrin, M. Arshad Azmi, Imtiaz Ahmed, Syed Naim-Ul-Hasan Naqvi, Kahkashan Akhtar
Level Of Lactate Dehydrogenase (Ldh) In Resistant And Susceptible Strains Of Culicine Mosquitoes Of The Karachi Region After Treatment With Ddt, Malathion And Cyfluthrin, M. Arshad Azmi, Imtiaz Ahmed, Syed Naim-Ul-Hasan Naqvi, Kahkashan Akhtar
Turkish Journal of Zoology
The effects of Malathion, Cyfluthrin, and DDT were observed on the activity of lactate dehydrogenase (LDH) in susceptible and resistant strains of culicine mosquitoes. Biochemical estimation (colorimetry) revealed a remarkable increase in the enzyme activity in Culex fatigans (L.Y. strain). In contrast, in Culex fatigans (G.I. strain) and Culex fatigans (K.U strain), inhibition of enzyme activity was found after treatment with pesticides.
Evaluation Of Methiocarb 50%-Wp As A Taste Repellent Against The House Sparrow (Passer Domesticus L.), Syed Waqar Ali̇ Ri̇zvi̇, Amjad Pervez, Syed Muzaffar Ahmed
Evaluation Of Methiocarb 50%-Wp As A Taste Repellent Against The House Sparrow (Passer Domesticus L.), Syed Waqar Ali̇ Ri̇zvi̇, Amjad Pervez, Syed Muzaffar Ahmed
Turkish Journal of Zoology
Laboratory studies in cages and outdoor aviaries were conducted, using different concentrations of methiocarb 50%-WP to estimate the ideal dose needed to produce taste aversion in the house sparrow (Passer domesticus). Under a nochoice test, sparrows showed a clear difference in millet bait preference among various concentrations. Under choice tests, in cages and outdoor aviaries a clear repellency trend was recorded in both sexes with increases in poison concentration. However, female birds showed a higher repellency pattern than males. It was concluded that methiocarb grain bait at 0.1% proved to be highly effective in repelling sparrows and may function as …
Behavioural Abnormalities Of Cyprinion Watsoni On Exposure To Copper And Zinc, Syed Lal Shah
Behavioural Abnormalities Of Cyprinion Watsoni On Exposure To Copper And Zinc, Syed Lal Shah
Turkish Journal of Zoology
Cyprinion watsoni were exposed to three treatments of copper (0.03, 0.06, 0.12 mg/L) and three treatments of zinc (0.5, 3.0, 7.0 mg/L) for a period of one week to allow behavioural changes to be observed. None of the treatments caused mortality. Treatment with 0.03 mg Cu/L caused little change in fish behaviour; however, 0.06 mg Cu/L caused increased swimming activity and breathing movements. The highest treatment of copper (0.12 mg Cu/L) caused lethargy and loss of equilibrium in C. watsoni. Similarly, the lowest concentration of zinc (0.5 mg/L) caused no visible change in fish behaviour; however, with 3.0 mg Zn/L, …
A Preliminary Study On The Population Dynamics Parameters Of Whiting (Merlangius Merlangus Euxinus) In Turkish Black Sea Coastal Waters, Ali̇ İşmen
Turkish Journal of Zoology
Some population parameters of the whiting (Merlangius merlangus euxinus) distributed along the Turkish Black Sea coast, were determined by using age-length data. The mean annual growth rate in length was found to be 3.7 cm. The maximum age group was determined as IX for females and VI for males. The seasonalized von Bertalanffy growth parameters in length were estimated to be L_o=39.1 cm, K = 0.15 year^{-1}, t_o = -1.53 year, C=0.23, t_s=0.48. There was a difference in growth rate between male and female fish. The females grow faster than males and reach a greater maximum length. Total mortality and …