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Articles 61 - 90 of 121
Full-Text Articles in Zoology
In-Stream Monitoring Of Sediments And Water In The Lower Ouachita River For Site Impact To Aquatic Biota, Jerry L. Farris, J. T. Knight, C. D. Milam, F. Buzen, J. F. Nix
In-Stream Monitoring Of Sediments And Water In The Lower Ouachita River For Site Impact To Aquatic Biota, Jerry L. Farris, J. T. Knight, C. D. Milam, F. Buzen, J. F. Nix
Journal of the Arkansas Academy of Science
Reported reduced sportfish densities in the main channel of the Ouachita River prompted an investigation, beginning in 1990, into potential causes of ongoing impairment to aquatic biota. In-stream monitoring that incorporated toxicity testing of sediments and water was conducted to discern potential sources of contaminants that might be related to the suboptimal fishery populations. Organisms selected to evaluate chronic impairment included larval fish, clams, midges and water fleas. The fathead minnow {Pimephales promelas) and cladoceran (Ceriodaphnia dubid) were used to estimate patterns of toxicity associated with water from seven designated reaches and selected tributaries of the Ouachita River. Larval survival …
Telemetric Observations Of Foraging Ozark Big-Eared Bats In Arkansas, J. D. Wilhide, V. Rick Mcdaniel, Michael J. Harvey, Daniel R. White
Telemetric Observations Of Foraging Ozark Big-Eared Bats In Arkansas, J. D. Wilhide, V. Rick Mcdaniel, Michael J. Harvey, Daniel R. White
Journal of the Arkansas Academy of Science
Ozark big-eared bat (Corynorhinus townsendii ingens) foraging activities were studied during 1995 in Marion County, Arkansas. Adult bats were equipped with radiotransmitters and tracked during June and July. Foraging activities were generally within 1 kilometer (km) of the roost cave. Male bats ranged farther than females with the exception of one female that flew 2.5 km into a different watershed. Male big-eared bats and northern long-eared bats (Myotis septentrionalis) were also found within the maternity colony.
Caudal Courtship Glands In The Cave Salamander, Eurycea Lucifuga (Caudata: Plethodontidae), Butch E. Hamlett, Andy G. Strecker, Stanley E. Trauth
Caudal Courtship Glands In The Cave Salamander, Eurycea Lucifuga (Caudata: Plethodontidae), Butch E. Hamlett, Andy G. Strecker, Stanley E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
Arkansas Range Extension Of The Seminole Bat (Lasiurus Seminolus), J. D. Wilhide, Brady Baker, David A. Saugey
Arkansas Range Extension Of The Seminole Bat (Lasiurus Seminolus), J. D. Wilhide, Brady Baker, David A. Saugey
Journal of the Arkansas Academy of Science
No abstract provided.
Nutritional Condition And Reproduction Of Deer At Fort Chaffee, Arkansas, Thomas A. Nelson, Donald A. Phillips
Nutritional Condition And Reproduction Of Deer At Fort Chaffee, Arkansas, Thomas A. Nelson, Donald A. Phillips
Journal of the Arkansas Academy of Science
No abstract provided.
Behaviour Of Gilbert's Potoroo (Potorous Gilbertii Gould) In Captivity, Kylie Dijon Burke
Behaviour Of Gilbert's Potoroo (Potorous Gilbertii Gould) In Captivity, Kylie Dijon Burke
Theses : Honours
In late 1994, Gilbert's Potoroo was rediscovered almost 120 years after it was believed to have become extinct. It was found at Two Peoples Bay Nature Reserve, near Albany, Western Australia. Since then, it has become urgent that detailed studies of the potoroo's behaviour and ecology be undertaken, so as to increase the understanding of the needs of 'this critically endangered marsupial. Due to its critical status, increasing the number of animals is of paramount importance to the continued survival of this species. An understanding of the behavioural repertoire of the species will aid in its recovery and provide the …
Cladistic Analysis Of 37 Mediterranean Bogidiellidae (Amphipoda), Including Bogidiella Arista, New Species, From Turkey, Stefan Koenemann, Ronald Vonk, Frederick R. Schram
Cladistic Analysis Of 37 Mediterranean Bogidiellidae (Amphipoda), Including Bogidiella Arista, New Species, From Turkey, Stefan Koenemann, Ronald Vonk, Frederick R. Schram
Biological Sciences Faculty Publications
A new subterranean amphipod species, Bogidiella (Medigidiella) arista, found in the mesopsam mic ground waters of southern Anatolia, Turkey, is described, together with Bogidiella (Bogidiella) calicali Karaman, the latter being recorded for the first time in the eastern Mediterranean. A cladistic analysis of 37 Mediterranean species of the family Bogidiellidae is performed, using 4 species from the Canary Islands as an outgroup. Alternatively, 2 cladistic software packages, PAUP 3.1.1 and HENNIG86, are employed to calculate consensus trees of minimal length. The resulting trees show more or less identical robust clades, characterizing a central, a central-eastern, …
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. …
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.
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.
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 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.
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, …
Metazoan Parasites And Other Symbionts Of Cetaceans In The Caribbean, Antonio A. Mignucci-Giannoni, Eric P. Hoberg, Doug Siegel-Causey, Ernest H. Williams Jr.
Metazoan Parasites And Other Symbionts Of Cetaceans In The Caribbean, Antonio A. Mignucci-Giannoni, Eric P. Hoberg, Doug Siegel-Causey, Ernest H. Williams Jr.
Harold W. Manter Laboratory of Parasitology: Faculty Publications
The parasite fauna in cetaceans from Puerto Rico, the Virgin Islands, and the larger Caribbean region is poorly known. We provide the first records for parasite biodiversity among a diverse assemblage of cetaceans from the Caribbean Sea. Internal and external parasites and commensals were collected from stranded whales and dolphins salvaged in Puerto Rico, the United States and British Virgin Islands, Jamaica, and Venezuela between 1989 and 1997. A total of 47 individuals of 16 species of whales and dolphins (15 odontocetes and one mysticete) were examined. Overall, parasites and commensals were found in 34 (72.3%) animals, representing 13 species …
Chondrocranial Anatomy And Skeletogenesis In Dendrobates Auratus, Rafael O. De Sá, Shannon Hill
Chondrocranial Anatomy And Skeletogenesis In Dendrobates Auratus, Rafael O. De Sá, Shannon Hill
Biology Faculty Publications
The larval chondrocranium and visceral skeleton of Dendrobates auratus ls described and compared with those of other dendrobatids. Four characters, i.e. lack of fusion between orbital cartilages and otic capsules, wide processus muscularis palatoquadrati, lack of processus pseudopterygoideus, and lack of processus anterolateralis hyalis, represent derived conditions for Dendrobates within Dendrobatidae. Cranial and postcranial ossification sequences are reported for D. auratus and Epipedobates tricolor. Skeletogenesis is earlier in E. tricolor, but the overall pattern of ossification is similar in the two species.
Four New Species And One New Subspecies Of The Genus Cobitis(Pisces:Ostariophysi: Cobitidae) From Turkey, Füsun Erkakan, F. Güler Atalay - Ekmekçi̇, Teodor T. Nalbant
Four New Species And One New Subspecies Of The Genus Cobitis(Pisces:Ostariophysi: Cobitidae) From Turkey, Füsun Erkakan, F. Güler Atalay - Ekmekçi̇, Teodor T. Nalbant
Turkish Journal of Zoology
On the basis of morphological characters such as the shape of the mouth, suborbital spines, lamina circularis subdorsal scales, pigmentation and fin ray formulas four new species ( kellei, fahireae, splendens and puncticulata) and one subspecies ( C. vardarensis kurui) of genus Cobitis from Turkey are described.
Early Development Of Barbel ( Barbus Barbus L.) Larvae, Metin Çalta
Early Development Of Barbel ( Barbus Barbus L.) Larvae, Metin Çalta
Turkish Journal of Zoology
In this study, the early development of barbel ( Barbus barbus L.) larvae has been determined by measuring their wet weight, dry weight, whole body mineral content (Ca, Mg, Na and K), skeletal development and gill development. It has been observed that wet weight, whole body mineral contents, the number of lamellae per filament of gill and the number of calcified vertebrae of larvae during early development stage increased by age, whereas dry weight decreased. The increase of whole body magnesium content has been very low compared with that of other minerals. In addition, a possitive relationship between whole body …
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 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.
A New Record For The Turkish Fauna: Tycherobius Stramenticola Bolland(Acari, Actinedida, Camerobiidae), Kamil Koç, Nusret Ayyildiz
A New Record For The Turkish Fauna: Tycherobius Stramenticola Bolland(Acari, Actinedida, Camerobiidae), Kamil Koç, Nusret Ayyildiz
Turkish Journal of Zoology
In this study, the characters and distribution of Tycherobius stramenticola Bolland, 1986 which is a new record for the Turkish fauna are given.
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.
Fluctuation Of Dominant Mesozooplankton Species In The Black Sea, North Sea And The Baltic Sea: Is A General Trend Recognisable?, Ulrich Niermann, Ferit Bi̇ngel, Güner Ergün
Fluctuation Of Dominant Mesozooplankton Species In The Black Sea, North Sea And The Baltic Sea: Is A General Trend Recognisable?, Ulrich Niermann, Ferit Bi̇ngel, Güner Ergün
Turkish Journal of Zoology
The distribution and fluctation of dominant pelagic species>300µ(Copepoda, Chaetognatha, Scyhozoa, Ctenophora and ichthyoplankton) of the southern Black Sea were compared with that of dominant species of the North Sea and the Baltic Sea in relation to oceanographic and environmental features. In all three seas, similar changes in the zooplankton composition took place at the end of the 1980's, and the beginning of the 1990's. - decreasing or increasing abundances of certain species, - occurrence of new species (North Sea: Muggiaea atlantica Lusitanean fish species; Black Sea: Mnemiopsis leidyl), - changes with respect to onset and duration of the bloom …
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.
Erythrocyte Sizes Of Some Urodeles From Turkey, Mehmet K. Atatür, H. Arikan, A. Mermer
Erythrocyte Sizes Of Some Urodeles From Turkey, Mehmet K. Atatür, H. Arikan, A. Mermer
Turkish Journal of Zoology
This study is on the erythrocyte sizes of some urodeles ( Salamandra salamandra, Triturus vulgaris, Triturus karelinii, Tri-turus vittatus, Mertensiella luschani, Mertensiella caucasica) living in various localities of Turkey. Blood smears stained with Wright's stain were utilized.
A New Subspecies Of Jerboa From Turkey;Allactaga Euphratica Kivanci Subsp. N., Ercüment Çolak, Nuri Yi̇ği̇t
A New Subspecies Of Jerboa From Turkey;Allactaga Euphratica Kivanci Subsp. N., Ercüment Çolak, Nuri Yi̇ği̇t
Turkish Journal of Zoology
In this study, 42 specimens of Allactaga euphratica from Urfa (Turkey) were examined based on morphological, cranial, external and karyological characters. A comparison of specimens from Urfa with those from Syria, Jordan, Kuwait and Iraq showed that specimens from Urfa, Syria and Jordan, Kuwait and Iraq showed that specimens from Urfa, Syria and Jordan differ from those from Kuwait and Iraq. Thus, specimens from Urfa (Turkey), Syria and Jordan were included in a new subspecies, Allactaga euphratica kivanci subsp. 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 …
A Study On Taxonomic Status Of Microtus Subterraneus (De Selyslongchamps, 1836) And Microtus Majori Thomas, 1906 (Mammalia:Rodentia) In Turkey, Ercüment Çolak, Nuri Yi̇ği̇t, Mustafa Sözen, Şakir Özkurt
A Study On Taxonomic Status Of Microtus Subterraneus (De Selyslongchamps, 1836) And Microtus Majori Thomas, 1906 (Mammalia:Rodentia) In Turkey, Ercüment Çolak, Nuri Yi̇ği̇t, Mustafa Sözen, Şakir Özkurt
Turkish Journal of Zoology
Specimens collected from Veliköprüsü in Thrace (European Turkey), Akçaalan (Abant, Bolu), Akkus, (Ordu), and Meryemana (Trabzon), which is the type locality of M. majori, were examined according to morphological, external, cranial, bacular, phallic and karyological characters. Specimens from Thrace were included in Microtus subterraneus. Populations of M. subterraneus in Thrace karyologically differ from those in Anatolia, the former having 2n = 52 chromosomes, NFa = 56, NF =60, and the latter 2n = 54 chromosomes, NFa = 56, NF = 60. The karyotype of M. majori at its type locality contains 2n = 54 chromosomes along with NFa = 56 …
A Study On The Long-Eared Hedgehog, Hemiechinus Auritus(Gmelin, 1770)(Mammalia: Insectivora) In Turkey, Ercüment Çolak, Nuri Yi̇ği̇t, Mustafa Sözen, Şakir Özkurt
A Study On The Long-Eared Hedgehog, Hemiechinus Auritus(Gmelin, 1770)(Mammalia: Insectivora) In Turkey, Ercüment Çolak, Nuri Yi̇ği̇t, Mustafa Sözen, Şakir Özkurt
Turkish Journal of Zoology
Thirteen specimens of Hemiechinus auritus collected in Turkey were examined for external, cranial, karyological and phallic characteristics along with postnatal development. The karyotype of H. auritus has 2n = 48 chromosomes, NFa = 92 and NF = 96. The X chromosome is a large metacentric and the Y chromosome is the smallest metacentric. There are two rows of spines on the dorsal of the glans penis. The pups were born with an average weight of 6.74 g, and they opened their eyes and ears 20 days after birth. Weaning took place on day 31.
Comparative Efficacy Of Bromadiolone, Cholecalciferol And Zinc Phosphideagainst Short -Tailed Mole Rat Nesokia Indica In Captivity, Amjad Pervez, Syed M. Ahmad, S. Waqar, A. Rizvi
Comparative Efficacy Of Bromadiolone, Cholecalciferol And Zinc Phosphideagainst Short -Tailed Mole Rat Nesokia Indica In Captivity, Amjad Pervez, Syed M. Ahmad, S. Waqar, A. Rizvi
Turkish Journal of Zoology
We conducted no-choice and paired choice feeding trials with individually caged Nesokia indica to evaluate the efficacy of Bromadiolone, Cholecalciferol and Zinc phosphide baits. Under no-choice test (1 day and 3 day) male rats consumed less bromadiolone bait. However, sex-wise difference was observed non-significant. Under choice feeding test, difference between bromadiolone bait intake and sex was observed non-significant. Under cholecalciferol bait, treated bait was consumed more than plain bait. Among the baits tested, cholecalciferol appeared promising for controlling short-tailed mole rat, Nesokia indica.
An Investigation On The Reproduction Properties Of Chub ( Leuciscus Cephalusl., 1758) In Lake Tödürge (Zara/Sivas)*, Bülent Ünver
An Investigation On The Reproduction Properties Of Chub ( Leuciscus Cephalusl., 1758) In Lake Tödürge (Zara/Sivas)*, Bülent Ünver
Turkish Journal of Zoology
In this study, the reproductive properties of the chub population ( Leuciscus cephalusL., 1758) in lake Tödürge, Zara/Sivas, were investigated. A total of 674 specimens were caught between April and November 1994. The age and sex distributions and the age of sexual maturity were determined. The reproduction period of the population was determined. Fecundity was determined and the relationships between the fecundity and body weight, length and age were investigated. The age composition of specimens of the population consisting of 68.25% female and 31.75% male, was found to be between I and VII. Males reached maturity in their second or …