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Articles 1 - 30 of 49
Full-Text Articles in Life Sciences
A Study On Ecology And Biology Of Microtus Guentheridanford And Alston,1880 (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Mustafa Sözen, Nuri Yi̇ği̇t, Şakir Özkurt
A Study On Ecology And Biology Of Microtus Guentheridanford And Alston,1880 (Mammalia: Rodentia) In Turkey, Ercüment Çolak, Mustafa Sözen, Nuri Yi̇ği̇t, Şakir Özkurt
Turkish Journal of Zoology
In this study, ecology and biology of Microtus guentheriwere investigated based on both field and laboratory observations along with its effects on agricultural crops. It was determined that this vole has a shallow burrow with numerous entrances and does not store food in its burrow. In captivity, M. guentherigave litters from September to June and a female produced 42 pups, being seven litters during a reproduction season. The duration of pregnancy varied 20 to 21 days. The average litter size was 5.5 and young were born in an average weight of 3.3 g. The fur developed at an age of …
Contribution To The Taxonomy, Distribution And Karyology Of Martes Foina(Erxleben, 1777) (Mammalia: Carnivora) In Turkey, Nuri Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şakir Özkurt
Contribution To The Taxonomy, Distribution And Karyology Of Martes Foina(Erxleben, 1777) (Mammalia: Carnivora) In Turkey, Nuri Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şakir Özkurt
Turkish Journal of Zoology
In this preliminary study, nine Stone Martens were recorded from different localities in Turkey. Their morphological characteristics were found to be consistent with previously published papers. However, the throat patches of Turkish Stone Martens show variations with respect to shape. In addition, it was determined that the morphologic and biometric characteristics of Turkish samples were consistent with those of M. f. syriaca. According to the karyological findings, the diploid number of chromosomes and the fundamental number were 38 and 76, respectively.
A Contribution To The Knowledge Of The Meloidae (Coleoptera)Fauna Of Turkey Along With New Records, Hikmet Özbek, Dezso Szaloki
A Contribution To The Knowledge Of The Meloidae (Coleoptera)Fauna Of Turkey Along With New Records, Hikmet Özbek, Dezso Szaloki
Turkish Journal of Zoology
The faunistic study on Meloidae conducted from 1970s up to 1996 based on the collection of over 4000 specimens and 147 species of 17 genera in two subfamilies are reported. Among them Alosimus reitterianus(Semenov), Coryna confluensReiche, Mylabris cingulata Falderman, M. colligata Redtenbacher, M. furcimacula Sumakov, M. serana (Escherich), M. suturalis Pic, Meloe ganglbauery Apfelbeck, M. glazunovi Pliginskij, M. rufiventris Germar, M. scabriusculus Brand et Erichson, Apalus bipunctatus Germar, A. spectabilis Schaun, Stenoria analis Schaun and Zonitis nigriventris Motschulsky are new records for the Turkish fauna. Besides that Cerocoma scovitzi intermediaMaran, Lydus anatolicusMuche, L. gibbigerEscherich, Micromerus bitlisensis Kaszab, M. dersimensis Kaszab, …
The Herpetofauna Of The Ordu-Giresun Region, Yusuf Kumlutaş, Varol Tok, Oğuz Türkozan
The Herpetofauna Of The Ordu-Giresun Region, Yusuf Kumlutaş, Varol Tok, Oğuz Türkozan
Turkish Journal of Zoology
In this study, 17 reptile and amphibian species were recorded from 19 different localities in the Ordu-Giresun region. Of these, 3 belong to the urodelans species group, 6 belong to anurans, 4 belong to lizards and 4 belong to snakes.
Ornithological Observations On Karadag, Konya Province, Turkey, Guy M. Kirwan
Ornithological Observations On Karadag, Konya Province, Turkey, Guy M. Kirwan
Turkish Journal of Zoology
Few ornithological observations are available from the isolated massifs of the Central Plateau; and for Karadag, Konya province there exists only the records of Ramsay (1914) in the summer of 1907. Observations from a visit in June 1996 are pre-sented and compared with those of Ramsay and data from other sources, principally Roselaar (1995). The total number of bird species recorded on the mountain is 53, of which 18 have been proven to breed; it seems probable that the globally threatened White-tailed Eagle formerly bred in the study area.
A New Grey Mullet Species " Mugil So-Iuy Basilewsky" (Teleostei: Mugilidae)From The Aegean Coast Of Turkey, Murat Kaya, Savaş Mater, Ali Yıldırım Korkut
A New Grey Mullet Species " Mugil So-Iuy Basilewsky" (Teleostei: Mugilidae)From The Aegean Coast Of Turkey, Murat Kaya, Savaş Mater, Ali Yıldırım Korkut
Turkish Journal of Zoology
Mugil so-iuyis a freshwater fish living in Amu Darya River Basin, Far East Asia. It was first introduced to the area around the Sea of Azov for fish farming but, then migrated to the Black Sea, and from there to the Sea of Marmara. The present study is the first report from the Aegean Sea. Morphometrical and meristic characteristics of the two specimens caught are described.
Influence Of Sediment On Heavy Metal Uptake By The Polychaete Arenicola Marina, Levent Bat
Influence Of Sediment On Heavy Metal Uptake By The Polychaete Arenicola Marina, Levent Bat
Turkish Journal of Zoology
In this study, the suitability of the polychaete Arenicola marina as a test organism using clean intertidal sediment contaminated with copper, zinc and cadmium was evaluated. Metal levels in casts were significantly lower than in unworked sediment indicating that the bioturbatory activity of lugworms might be significant in the distribution of the pollutants. This study showed that sediments contaminated with specific pollutants affected the uptake of these pollutants by Arenicola in a predictable and dose–dependant way and gave further justification for the use of this species in sediment toxicity tests.
Notes On Distributional Records And Some Characteristics Of Five Carnivorespecies (Mammalia: Carnivora) In Turkey, Şakir Özkurt, Mustafa Sözen, Nuri Yi̇ği̇t, Ercüment Çolak
Notes On Distributional Records And Some Characteristics Of Five Carnivorespecies (Mammalia: Carnivora) In Turkey, Şakir Özkurt, Mustafa Sözen, Nuri Yi̇ği̇t, Ercüment Çolak
Turkish Journal of Zoology
In this study, carnivore specimens such as Herpestes ichneumon, Hyaena hyaena, Meles meles, Vulpes vulpes, Lutra lutra from various localities were evaluated based on external and cranial morphology, and then were compared with the published papers. Thus, the present status in Turkey of these species along with distribution records were evaluated.
Geographic Variations And Taxonomic Status Of Myotis Myotis (Borkhausen,1797) In Turkey ( Chiroptera: Vespertilionidae), İrfan Albayrak, Nursel Aşan
Geographic Variations And Taxonomic Status Of Myotis Myotis (Borkhausen,1797) In Turkey ( Chiroptera: Vespertilionidae), İrfan Albayrak, Nursel Aşan
Turkish Journal of Zoology
This study is a taxonomical evaluation of 146 specimens of Myotis myotis (Borkhausen, 1797) collected in Turkey between 1974 and 1994. Turkish Myotis myotis were compared with records from the Palaearctic Region. It was determined that both Myotis myotis myotis and Myotis myotis macrocephalicus are distributed in Turkey. The diagnostic characters, habitat, pelage colour, external and cranial measurements and distribution of each taxon were recorded.
Further Records Of Bats From Jordan And A Synopsis, Mazin Botros Qumsiyeh, Zuhair Sami Amr, Ratib Musa Al-Oran
Further Records Of Bats From Jordan And A Synopsis, Mazin Botros Qumsiyeh, Zuhair Sami Amr, Ratib Musa Al-Oran
Turkish Journal of Zoology
Recent records along with a synopsis of the known bats of Jordan are given. Twenty-four species of bats are reported from Jordan, including two additional records, Rhinolophus mehelyi and Asellia tridens. Five other bat species are suspected to occur.
Comparative Toxicological Studies Of Rb-A (Neem Extract) And Coopex(Permethrin+Bioallethrin) Against Sitophilus Oryzae With Reference Totheir Effects On Oxygen Consumption And Got, Gpt Activity, Mohammad Arshad Azmi, Syed Naimul Hasan Naqvi, Muhammed Farhanullah Khan, Kahkashan Akhtar, Farah Younus Khan
Comparative Toxicological Studies Of Rb-A (Neem Extract) And Coopex(Permethrin+Bioallethrin) Against Sitophilus Oryzae With Reference Totheir Effects On Oxygen Consumption And Got, Gpt Activity, Mohammad Arshad Azmi, Syed Naimul Hasan Naqvi, Muhammed Farhanullah Khan, Kahkashan Akhtar, Farah Younus Khan
Turkish Journal of Zoology
The toxicity of a neem extract RB-a in comparison with a pyrethroid, Coopex, was studied along with their effects on GPT and GOT activities and oxygen consumption in S. oryzae. The LD 50 value of Coopex was found to be 6.128 \mug/cm 2 whereas RB-a was found not to be an acute contact poison. Even at a dose of 1257 \mug/cm 2 it could cause 34% mortality of S. oryzae. The oxygen consumption under the effects of Coopex was found to decline less i.e. at 6.12 \mug/cm 2 from 0.0005191 to 0.0006589, as compared to RB-a where the rate of …
The Growth Features Of Tench ( Tinca Tinca L., 1758 ) In The Kesikköprüdam Lake, Ahmet Altindağ, Sibel Yi̇ği̇t, Seyhan Ahiska, Şakir Özkurt
The Growth Features Of Tench ( Tinca Tinca L., 1758 ) In The Kesikköprüdam Lake, Ahmet Altindağ, Sibel Yi̇ği̇t, Seyhan Ahiska, Şakir Özkurt
Turkish Journal of Zoology
In this study, the growth properties of tench ( Tinca tincaL., 1758) in the Kesikköprü Dam Lake between April 1995 and March 1996 were studied. In the specimens examined, ages ranged from I-VI in both sexes. The population was 51.43% female and 48.57% male. The fork length and weight in ranged from 16.1 to 41.4 cm and from 85 to 1350 g, respectively, and in males from 15.8 to 40.3 cm and from 83 to 1127 g, respectively. Age-length and age-weight relations were calculated according to the von Bertalanffy growth equation. The following values were obtained for females and males, …
Determination Of The Toxicities Of Fenpropathrin (Pyrethroid) And Neemformulation (Rb-A+Pbo+Tx-100) Against Alphitobius Diaperinus Adults Andtheir Effects On Transaminases, Rahila Tabassum, Syed Naimul Hasan Naqvi, Musarrat Jahan, Syed Mohammad Nurulain, Mohammad Farhanullah Khan, Mohammad Arshad Azmi
Determination Of The Toxicities Of Fenpropathrin (Pyrethroid) And Neemformulation (Rb-A+Pbo+Tx-100) Against Alphitobius Diaperinus Adults Andtheir Effects On Transaminases, Rahila Tabassum, Syed Naimul Hasan Naqvi, Musarrat Jahan, Syed Mohammad Nurulain, Mohammad Farhanullah Khan, Mohammad Arshad Azmi
Turkish Journal of Zoology
This report describes the determination of the toxicity of two pesticides, neem formulation (RB-a+PBO+Tx-100) and fenpropathrin, on Alphitobius diaperinus adults. The mortalities caused by the two compounds were found to be 70% for a 117.8\mug/cm 2 dose of neem formulation, and 88% for a 1.96 \mug/cm 2 dose of synthetic pyrethroid, fenpropathrin (Danitol). The LD 50 value of Danitol was found to be 0.2749 \mug/cm 2 , and that of neem formulation was found to be 58.92 \mug/cm 2 . Danitol-treated Alphitobius diaperinus adults showed inhibitions of 44.66% and 45.91% in GPT and GOT activity, respectively, Whereas insects treated with …
A Study On The Zooplanktonic Fauna Of The Dam Lakeskunduzlar And Çatören (Kırka-Eskişehir), Ahmet Altindağ, Şakir Özkurt
A Study On The Zooplanktonic Fauna Of The Dam Lakeskunduzlar And Çatören (Kırka-Eskişehir), Ahmet Altindağ, Şakir Özkurt
Turkish Journal of Zoology
In the present study, the zooplanktonic fauna of the Kunduzlar and Çatören dam lakes (Kirka basin-Eskişehir) was investigated during August 1994-June 1995. Eight species of Rotifera, five species of Cladocera and two species of Copepoda were identified in both dam lakes. In addition, the mean zooplankton abundance (ind. m -3 ) and physical and chemical parameters of dam lakes were given.
Biomass Analysis Of Dominant Zooplanktonic Organisms Living In Lakemogan (Turkey), Nuray Emir Akbulut
Biomass Analysis Of Dominant Zooplanktonic Organisms Living In Lakemogan (Turkey), Nuray Emir Akbulut
Turkish Journal of Zoology
In this study carbon-length regression was established for Arctodiaptomus bacilliferand length-weight relationships were established for Diaphanosoma lacustris, Keratella quadrata and Filinia longiseta, which are abundant in Lake Mogan. Great individual variation was determined in the carbon and nitrogen contents of Arctodiaptomus bacillifer, Furthermore, the length-weight regressions varied greatly for the, other zooplanktonic organisms according to sampling dates and, for some, to sampling points.
Hibernation And Body Weight In Dormice, Glis Glis Orientalis(Nehring, 1903) (Rodentia: Gliridae), Maintained Underuncontrolled Conditions, Ercüment Çolak, Nuri Yi̇ği̇t, Mustafa Sözen, Şakir Özkurt
Hibernation And Body Weight In Dormice, Glis Glis Orientalis(Nehring, 1903) (Rodentia: Gliridae), Maintained Underuncontrolled Conditions, Ercüment Çolak, Nuri Yi̇ği̇t, Mustafa Sözen, Şakir Özkurt
Turkish Journal of Zoology
Hibernation pattern and changes in the body weight of juvenile and adult dormice, Glis glis orientalis, kept in uncontrolled conditions were investigated. It was determined that G.g.orientalis entered hibernation on October 28 when its body weight was 180 g and the ambient temperature was below 18 ºC, which seems to be the critical temperature for entering hibernation. Although body weight has an important role in entering hibernation at the beginning of the hibernation season, dormice hibernated as the hibernation season progressed regardless of their body weight. Adult dormice arose from hibernation during the period of May 13 to June 6. …
The Localization And Structure Of A Neurohemal H-Organ In Acrida Bicolor(Thunberg) And Locusta Migratoria (Linneaus) (Orthoptera), Serap Mutun, Ayla Öber
The Localization And Structure Of A Neurohemal H-Organ In Acrida Bicolor(Thunberg) And Locusta Migratoria (Linneaus) (Orthoptera), Serap Mutun, Ayla Öber
Turkish Journal of Zoology
Acrida bicolor (Thunberg) and Locusta migratoria (Linneaus) nymphs were taken as objects to investigate the presence of neurohemal H-organ in Orthoptera of which was previously reported in Lepidoptera. A triangle-shaped H-organ was clearly observed in between the suboesophagial and prothoracic ganglions in two species.
Physiological Energetics Of Buccinum Undatuml. (Gastropoda) Off Douglas,Isle Of Man (The Irish Sea), Ahmet E. Kideyş
Physiological Energetics Of Buccinum Undatuml. (Gastropoda) Off Douglas,Isle Of Man (The Irish Sea), Ahmet E. Kideyş
Turkish Journal of Zoology
Physiological energetics of the common whelk ( Buccinum undatum) were studied in a population off Douglas, Isle of Man and an energy budget was constructed for the period February 1989 to January 1990. The components of the energy budget (in kJ m -2 year -1 ) for the population can be summarized thus: consumption (C)=753; growth production (P g )=34; reproductive production (P r )=4; mucus production=218; respiration (R)=96; ammonia excretion (U)=8; and faecal production (F)=393. Assimilation efficiency was 47.7%. P/B (annual production/biomass) was calculated as 1.40 representing an intermediate life span for this species.
Distribution Of Oligochaeta Species As Bioindicators Of Organic Pollution Inankara Stream And Their Use In Biomonitoring, Nilgün Kazanci, Sönmez Gi̇rgi̇n
Distribution Of Oligochaeta Species As Bioindicators Of Organic Pollution Inankara Stream And Their Use In Biomonitoring, Nilgün Kazanci, Sönmez Gi̇rgi̇n
Turkish Journal of Zoology
Specimens of the Oligochaeta species to be used as bioindicators of organic pollution were collected from Ankara Stream between April 1991 and November 1992. These species have been interpreted together with physico-chemical and the most important ecological parameters of the sampling point and evaluated to be used in biomonitoring.
A New Subspecies Of Meriones Tristrami Thomas, 1892 (Rodentia:Gerbillinae) From Kilis (Southeastern Turkey):Meriones Tristrami Kilisensis Subsp. N., Nuri Yi̇ği̇t, Ercüment Çolak
A New Subspecies Of Meriones Tristrami Thomas, 1892 (Rodentia:Gerbillinae) From Kilis (Southeastern Turkey):Meriones Tristrami Kilisensis Subsp. N., Nuri Yi̇ği̇t, Ercüment Çolak
Turkish Journal of Zoology
In this study, seventeen specimens of Meriones tristrami from Kilis were compared with the specimens of Meriones tristrami bodenheimeri along with topotypes of Meriones tristrami lycaon close to those from Kilis. It was determined that the specimens from Kilis were distinguishable from M.t. lycaon by characters such as dorsal coloration, Tx100 / HB (ratio of tail length to head and body), zygomatic breadth, occipitonasal length, basal length, diastema length, occipital width, weight, baculum shape and fundamental number of chromosomes. Thus, the specimens of M. tristrami from Kilis were determined to be a new subspecies, Meriones tristrami kilisensis subps. n.
Ecology And Biology Of Allactaga Elater, Allactaga Euphratica Andallactaga Williamsi (Rodentia: Dipodidae) In Turkey, Ercüment Çolak, Nuri Yi̇ği̇t
Ecology And Biology Of Allactaga Elater, Allactaga Euphratica Andallactaga Williamsi (Rodentia: Dipodidae) In Turkey, Ercüment Çolak, Nuri Yi̇ği̇t
Turkish Journal of Zoology
The young of Allactaga williamsi and Allactaga euphratica were born at an average weigth of 2.51 and 2.74 g., respectively. Litter size ranged from 3 to 6 with an average of 4.8 in A. williamsi, and it changed from 4 to 8 with an average of 4.8 in A. euphratica , A. williamsi breeds during the period of March to August, A. williamsi and A. euphratica produced 2 and 2 or 3 litters per year, respectively. Allactaga elater has four types of burrows: winter, summer, reproduction and temporary. A. williamsi and A. euphratica have two types of burrows: reproduction and …
An Investigation On The Blood-Serum Proteins Of Chalcides Ocellatus(Sauria: Scincidae) Populations From Southern Anatolia, Hüseyin Arikan, Mehmet K. Atatür, Ahmet Mermer
An Investigation On The Blood-Serum Proteins Of Chalcides Ocellatus(Sauria: Scincidae) Populations From Southern Anatolia, Hüseyin Arikan, Mehmet K. Atatür, Ahmet Mermer
Turkish Journal of Zoology
In this study, blood-serum proteins of 22 adult (11 MM , 11 VV ) Chalcides ocellatus (ocelated skink) specimens collected from various localities in Southern Anatolia are investigated qualitatively and quantitatively by means of polyacrylamide disc electrophoresis and densitometry. The species' serum protein electropherograms and protein distribution patterns are established for the first time.
Survival And Growth Of Corophium Volutator In Organically Enrichedsediment: A Comparison Of Laboratory And Field Experiments, Levent Bat, Dave Raffaelli
Survival And Growth Of Corophium Volutator In Organically Enrichedsediment: A Comparison Of Laboratory And Field Experiments, Levent Bat, Dave Raffaelli
Turkish Journal of Zoology
In this study, the amphipod Corophium volutator (Pallas) was evaluated as test organisms for use in sediment toxicity tests by adapting standard protocols for conducting 10-day and 28-day sediment toxicity tests. Combine laboratory and field bioas-says showed that Corophium can survive in organically enriched sediment if they have no alternative, suggesting that Corophium is relatively tolerant of organically enriched sediment. Neither were there effects on emergence or reburying behaviour. Therefore this bioassay is considered inappropriate for estimating the quality of organically enricment sediment.
The Short-Term Toxicity Of Two Toxicants To Artemia Nauplii, Melahat Toğulga
The Short-Term Toxicity Of Two Toxicants To Artemia Nauplii, Melahat Toğulga
Turkish Journal of Zoology
In this study, the short-term toxicities of sodium lauryl sulphate (an anionic detergent) and potassium dichromate on instar I and mixed instar II-III nauplii populations of Artemia were investigated. The comparisons between our results and the ARC-test (Artemia Reference Center) protocol show our experiments to be acceptable for acute toxicity standardization.
A Report On Reptiles Collected From Kumluca-Kalkan (Antalya), Turkey, Abidin Budak, Cemal Varol Tok, Ahmet Mermer
A Report On Reptiles Collected From Kumluca-Kalkan (Antalya), Turkey, Abidin Budak, Cemal Varol Tok, Ahmet Mermer
Turkish Journal of Zoology
9 species of lizards and 2 species of snakes, belonging to a total of seven families were collected from Kumluca-Kalkan between 8 and 10 April 1997.
The Taxonomy And Karyology Of Rattus Norvegicus (Berkenhout, 1769) Andrattus Rattus (Linnaeus, 1758) (Rodentia: Muridae) In Turkey, Nuri Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şakir Özkurt
The Taxonomy And Karyology Of Rattus Norvegicus (Berkenhout, 1769) Andrattus Rattus (Linnaeus, 1758) (Rodentia: Muridae) In Turkey, Nuri Yi̇ği̇t, Ercüment Çolak, Mustafa Sözen, Şakir Özkurt
Turkish Journal of Zoology
In this study, the Turkish population of Rattus norvegicus and Rattus rattus were studied with regard to external, cranial, phalli, bacula and tooth crown morphology and karyotype. External, internal and karyologic characteristics of R. norvegicus were found to be consistent with previously published results. Additionally, it was determined that there are striking color variations in the dorsal and ventral fur of R. rattus and that crown morphology is not a definitive characteristic distinguishing these species because of connected lobes in old specimens. According to the karyological studies, the diploid chromosome numbers and fundamental numbers of R. norvegicus and R. rattus …
Toxicity Of Neem Leaves Extract (Nlx) Compared Withmalathion (57 E.C.) Against Late 3rd Instar Larvaeof Culex Fatigans(Wild Strain) By Who Method, Mohammad Arshad Azmi, Syed Naeemul Hassan Naqvi, Imtiaz Ahmad, Rahila Tabassum, Bushra Anb
Toxicity Of Neem Leaves Extract (Nlx) Compared Withmalathion (57 E.C.) Against Late 3rd Instar Larvaeof Culex Fatigans(Wild Strain) By Who Method, Mohammad Arshad Azmi, Syed Naeemul Hassan Naqvi, Imtiaz Ahmad, Rahila Tabassum, Bushra Anb
Turkish Journal of Zoology
Among the filariaris causing mosquitoes Culex fatigans is considered an important intermediate host in South-East Asia. Toxicity of ethanolic extract of neem leaves (NLX) is compared with an organophosphate pesticide malathion (57 E.C.). The LC 50 value of malathion (Sisthion) determined presently is 0.45 ppm against late 3rd instar larvae of Culex fatigans (wild strain) and of neem fraction (NLX) is 390 ppm by standard WHO method.
The Behavioural Abilities Of Meteorus Versicolor Wesm. And Rogas Rossicuskok. (Hymenoptera, Branconidae) Parasitoids Of Tephrina Arenacearia Den.Et Schiff. (Lepidoptera, Geometridae), Ilhama Gudrat Gizi Kerimova
The Behavioural Abilities Of Meteorus Versicolor Wesm. And Rogas Rossicuskok. (Hymenoptera, Branconidae) Parasitoids Of Tephrina Arenacearia Den.Et Schiff. (Lepidoptera, Geometridae), Ilhama Gudrat Gizi Kerimova
Turkish Journal of Zoology
This paper concerns with the behavioural abilities of Meteorus versicolor Wesm. and Rogas rossicus Kok. (Hymenoptera, Braconidae)-internal parasitoids of Thephrina arenacearia Den. et Schiff. (Lepidoptera, Geometridae) as well. Periods of development phases and searching, ovipositional and mating behaviour of both parasitoids have been investigated.
Some Aspects Of Reproductive Biology Of Euryglossa Orientalis(Bl. & Schn.)In North Arabian Sea Along The Coast Of Karachi, Pakistan, Mohammed Atiqullah Khan
Some Aspects Of Reproductive Biology Of Euryglossa Orientalis(Bl. & Schn.)In North Arabian Sea Along The Coast Of Karachi, Pakistan, Mohammed Atiqullah Khan
Turkish Journal of Zoology
In Euryglossa orientalis,sexual maturity was separated into seven stages. Size at sexual maturity was observed at 182 mm TL in males and 178 mm TL in females. A male-female ratio of 1.00:1.60 was determined (0.385:0.615). This species has two spawning seasons in Pakistani waters. The ist spawning season starts in September and the second in February. Fecundity ranged from 9922 to 83891 with a mean value of 36361.
Some Observations On Gastric Emptying In The Black Sea Whiting,Merlangius Merlangus Euxinus, (N. 1840) Fed On Natural Prey, Kadir Seyhan, N. Selda Başçinar, Ertug Düzgüneş
Some Observations On Gastric Emptying In The Black Sea Whiting,Merlangius Merlangus Euxinus, (N. 1840) Fed On Natural Prey, Kadir Seyhan, N. Selda Başçinar, Ertug Düzgüneş
Turkish Journal of Zoology
In this study a new perspective on the feeding physiology of whiting, Merlangius merlangus euxinus, N. 1840 was investigated. The effects of the skin of the prey, double feeding and prey type on the gastric emptying rate (GER) of whiting fed on natural prey, namely anchovy ( Engraulis encrasicholus) and mussels ( Mytilus galloprovincialis), were investigated. Return of appetite was also studied. It was found that in laboratory conditions, whiting (48.0±8.30 g, n=12) had consumed about 10.2% of its body weight in mussels and return of appetite was found to be approximately 30 h. The effect of the skin of …