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Articles 14461 - 14490 of 36499
Full-Text Articles in Animal Sciences
Communicating The Overall Experience Of Research Through Various Approaches Using Art: A Case Study Of The Prothonotary Warbler, Hannah Huddle, Lesley P. Bulluck, Sarah E. Faris
Communicating The Overall Experience Of Research Through Various Approaches Using Art: A Case Study Of The Prothonotary Warbler, Hannah Huddle, Lesley P. Bulluck, Sarah E. Faris
Rice Rivers Center Research Symposium
Recommended Citation
In general, scientific research has publication of data as the end goal. The process and experience, which are of great importance in art disciplines, is not necessarily represented or valued. However, science has an inherent element of art to it, which deserves to be shown. I have been studying Prothonotary Warblers with a team from the VCU Biology Department to learn how I can reinterpret the research in a way that bridges the gap between the experience and typical scientific products. The research team measured spatial and temporal variation in warbler prey abundance (caterpillars and mayflies) and assessed …
Post-Weaning Nutritional Programming Of Ovarian Developmentin Beef Heifers, O.L. Amundson, T.G. Fountain, E.L. Larimore, B.N. Richardson, A.K. Mcneel, E.C. Wright, D.H. Keisler, R.A. Cushman, G.A. Perry, H.C. Freetly
Post-Weaning Nutritional Programming Of Ovarian Developmentin Beef Heifers, O.L. Amundson, T.G. Fountain, E.L. Larimore, B.N. Richardson, A.K. Mcneel, E.C. Wright, D.H. Keisler, R.A. Cushman, G.A. Perry, H.C. Freetly
South Dakota Beef Report, 2015
The nutritional management of replacement females from weaning to breeding is critical to lifetime productivity. Traditionally, cereal grains have been used to develop replacement heifers to attain puberty and enter the breeding system at a younger age. However, overfeeding heifers decreases number of calves weaned, while peri-pubertal caloric restriction increased primordial follicle numbers in the developing ovary. The number of primordial follicles a female has can determine her overall fertility; females with a greater amount of follicles have greater reproductive lifespans. In this study, two groups of heifers were developed to prebreeding status. One group received a control diet (228 …
The Jackrabbit Dairy Review, Vikram Mistry
The Jackrabbit Dairy Review, Vikram Mistry
The Jackrabbit Dairy & Food Review
No abstract provided.
Changes In Zebrafish (Danio Rerio) Startle Responses Due To Stressors Related To Marine Bycatch, Margot Wilsterman
Changes In Zebrafish (Danio Rerio) Startle Responses Due To Stressors Related To Marine Bycatch, Margot Wilsterman
Biology Honors Papers
Marine bycatch is one of the most pressing issues that result from modern industrialized fishing. Scientists do not have good estimates of rates of cryptic mortality, which is the mortality of individuals that are not landed but die from interactions with fishing gear below the water surface. One of the main causes of cryptic mortality is depredation, which occurs after individuals have escaped through fishing equipment and are eaten by predators waiting close behind for an effortless meal. In this study the effects of scale loss, slime loss, and exhaustion on the startle response of zebrafish were examined. These stressors …
2015 Oklahoma Research Day Full Program, Northeastern State University
2015 Oklahoma Research Day Full Program, Northeastern State University
Oklahoma Research Day Abstracts
This document contains all abstracts from the 2015 Oklahoma Research Day held at Northeastern State University.
A New Record Of Zerconid Mites (Acari, Mesostigmata, Zerconidae) From The Thrace Region Of Turkey, Mehmet Karaca, Raşi̇t Urhan
A New Record Of Zerconid Mites (Acari, Mesostigmata, Zerconidae) From The Thrace Region Of Turkey, Mehmet Karaca, Raşi̇t Urhan
Turkish Journal of Zoology
In this study, Prozercon martae Ujvári, 2010 is recorded for the first time from Turkey. On the basis of the samples collected from the Thrace region of Turkey, its morphological features are given with drawings.
Occurrence Of The Serpent Eel, Ophisurus Serpens (Linnaeus, 1758) (Osteichthyes: Ophichthidae), Close To The Bay Of İzmir (Aegean Sea, Turkey), Ali̇ Ulaş, Okan Akyol
Occurrence Of The Serpent Eel, Ophisurus Serpens (Linnaeus, 1758) (Osteichthyes: Ophichthidae), Close To The Bay Of İzmir (Aegean Sea, Turkey), Ali̇ Ulaş, Okan Akyol
Turkish Journal of Zoology
A specimen of the serpent eel, Ophisurus serpens, with a total length of 1917 mm was caught on 2 March 2014 by an angler on a boat off the coast of Karaburun, in front of the Sarpıncık lighthouse. This specimen is the second record for the central Aegean Sea since that of Aliağa, Çandarlı Bay, in August 1966.
Copidosoma Boucheanum Ratzeburg (Hym.: Encyrtidae): New Record From Iran, Hossein Lotfalizadeh, Mehri Bab-Morad
Copidosoma Boucheanum Ratzeburg (Hym.: Encyrtidae): New Record From Iran, Hossein Lotfalizadeh, Mehri Bab-Morad
Turkish Journal of Zoology
The encyrtid species Copidosoma boucheanum Ratzeburg (Hym.: Chalcidoidea, Encyrtidae) was identified and is reported for the first time from Iran. These specimens were reared from leafroller larvae (Lep.: Tortricidae) on Populus sp. as a polyembryonic endoparasitoid. Copidosoma species of Iran are listed with their distribution.
First Record Of The Genus Diarthrodella Klie, 1949 (Copepoda, Harpacticoida, Paramesochridae) From The Mediterranean Sea, With Description Of A New Species From Turkey, Serdar Sönmez, Suphan Karaytuğ, Serdar Sak
First Record Of The Genus Diarthrodella Klie, 1949 (Copepoda, Harpacticoida, Paramesochridae) From The Mediterranean Sea, With Description Of A New Species From Turkey, Serdar Sönmez, Suphan Karaytuğ, Serdar Sak
Turkish Journal of Zoology
Both sexes of Diarthrodella ergeneae sp. nov. (Copepoda, Harpacticoida, Paramesochridae), which were collected from the intertidal zone of Kurtpınarı Beach along the Mediterranean coast of Turkey, are described in detail. The new species is morphologically most similar to D. convexa Kunz, 1981; D. secunda secunda Kunz, 1954; and D. lancifera Kunz, 1981 according to the setal formula of the swimming legs, but D. ergeneae sp. nov. can easily be differentiated from D. convexa by the ratio of P1 exopod/enp-1, by the lack of an inner seta on P2 enp-2, and by the shape and armature of P5; from D. secunda …
The Genus Glyptholaspis Filipponi & Pegazzano (Acari: Macrochelidae) Of Kelkit Valley (Turkey), With First Description Of Male Of The Species G. Saprophila Mašán, Hasan Hüseyi̇n Özbek, Sali̇h Doğan, Durmuş Ali̇ Bal
The Genus Glyptholaspis Filipponi & Pegazzano (Acari: Macrochelidae) Of Kelkit Valley (Turkey), With First Description Of Male Of The Species G. Saprophila Mašán, Hasan Hüseyi̇n Özbek, Sali̇h Doğan, Durmuş Ali̇ Bal
Turkish Journal of Zoology
This study was carried out on the genus Glyptholaspis in Kelkit Valley, Turkey, during 2007-2012. Three species, G. americana (Berlese, 1888), G. confusa (Foa, 1900), and G. saprophila Masan, 2003, were recorded from Kelkit Valley. G. americana has been previously recorded from Turkey; G. confusa and G. saprophila are first records for the Turkish fauna. The male of G. saprophila is described for the first time in this study. Original drawings for all known species of the genus from Kelkit Valley are included. Additionally, an identification key to the Turkish species of Glyptholaspis is given here.
Investigation Of Genetic Variation Among Turkish Populations Ofandricus Lignicola Using Mitochondrial Cytochrome B Gene Sequence Data, Serap Mutun, Hülya Karagözoğlu
Investigation Of Genetic Variation Among Turkish Populations Ofandricus Lignicola Using Mitochondrial Cytochrome B Gene Sequence Data, Serap Mutun, Hülya Karagözoğlu
Turkish Journal of Zoology
No abstract provided.
Growth Hormone (Gh), Prolactin (Prl), And Diacylglycerol Acyltransferase (Dgat1) Gene Polymorphisms In Turkish Native Cattle Breeds, Emel Özkan Ünal, Eda Şeyma Kepenek, Havva Di̇nç, Füsun Özer, Gi̇zem Sönmez, İnci̇ Zehra Toğan, Mehmet İhsan Soysal
Growth Hormone (Gh), Prolactin (Prl), And Diacylglycerol Acyltransferase (Dgat1) Gene Polymorphisms In Turkish Native Cattle Breeds, Emel Özkan Ünal, Eda Şeyma Kepenek, Havva Di̇nç, Füsun Özer, Gi̇zem Sönmez, İnci̇ Zehra Toğan, Mehmet İhsan Soysal
Turkish Journal of Zoology
No abstract provided.
On The Genus Sunius Curtis, 1829 Of Turkey I. Two New Micropterous Species From Central Western Turkey (Coleoptera: Staphylinidae, Paederinae), Si̇nan Anlaş
Turkish Journal of Zoology
In this study, Sunius cokelezensis sp. Nov. From Çökelez Mountain in Denizli Province and Sunius sandiklicus sp. Nov. From the Sandıklı Mountains in Afyonkarahisar Province in central western Anatolia, Turkey, are described, illustrated, and distinguished from related congeners by the different shape of the ventral process of the aedeagus.
Trichodinid Fauna Of Freshwater Fishes With Infestation Indices In The Lower Kızılırmak Delta In Turkey And A Checklist Of Trichodinids(Ciliophora: Trichodinidae) In Turkish Waters, Ahmet Özer, Türkay Öztürk
Trichodinid Fauna Of Freshwater Fishes With Infestation Indices In The Lower Kızılırmak Delta In Turkey And A Checklist Of Trichodinids(Ciliophora: Trichodinidae) In Turkish Waters, Ahmet Özer, Türkay Öztürk
Turkish Journal of Zoology
This paper provides both the results of a comprehensive research study on trichodinid parasites of several fish species and a review of current trichodinid fauna of fish species revealed during parasitological survey studies in Turkey. The present study yielded 1 Tripartiella, 1 Paratrichodina, and 8 Trichodina identified to the species level and 3 Trichodina identified to the generic level in 12 fish species belonging to several families; their host preferences and infestation indices have also been presented. As a result of fish parasite investigations, a total of 33 trichodinid species have been identified on 30 fish species in Turkey. Considering …
Description Of The New Species Chthonius (Ephippiochthonius) Negarinae Sp. Nov. (Pseudoscorpiones: Chthoniidae) From Iran, Mahrad Nassirkhani, Reza Vafai Shoushtari
Description Of The New Species Chthonius (Ephippiochthonius) Negarinae Sp. Nov. (Pseudoscorpiones: Chthoniidae) From Iran, Mahrad Nassirkhani, Reza Vafai Shoushtari
Turkish Journal of Zoology
A new species, Chthonius (Ephippiochthonius) negarinae sp. Nov., is described from Iran. In addition, illustrations and measurements are given.
Some New Records And One New Species Of The Genus Lebertia Neuman (Acari: Hydrachnidia: Lebertiidae) From Turkey, Yunus Esen, Orhan Erman
Some New Records And One New Species Of The Genus Lebertia Neuman (Acari: Hydrachnidia: Lebertiidae) From Turkey, Yunus Esen, Orhan Erman
Turkish Journal of Zoology
In this study, water mites of the genus Lebertia Neuman, 1880 (Acari: Hydrachnidia) collected from Antalya, Artvin, Bingöl, Erzurum, Kahramanmaraş, and Siirt provinces of Turkey are presented. In total, 12 species were determined. Of these, Lebertia (s. Str.) marasensis sp. Nov. İs described as new to science, while L. (s. Str.) rufipes Koenike, 1902; L. (Pilolebertia) longiseta Bader, 1955; L. (Pilolebertia) pilosa Maglio, 1924; L. (Mixolebertia) separata Lundblad, 1930; and L. (Brentalebertia) minutipalpis K. Viets, 1920 are new records for the Turkish fauna.
Contributions To The Genus Platystoma (Diptera: Platystomatidae) Fauna Of Turkey With Seven New Records, Seda Mesci̇, Abdullah Hasbenli̇
Contributions To The Genus Platystoma (Diptera: Platystomatidae) Fauna Of Turkey With Seven New Records, Seda Mesci̇, Abdullah Hasbenli̇
Turkish Journal of Zoology
This study evaluated specimens belonging to the genus Platystoma collected from different provinces in Turkey between 1992 and 2007 and currently deposited at the Zoology Museum of Gazi University (ZMGU); 12 species and 2 subspecies belonging to this genus were identified. The species P. Dimidiatum (Hendel, 1913), P. Tegularium (Loew, 1859), P. Gemmationis (Rondani, 1869), P. Chrysotoxum (Hendel, 1913), P. Pubescens (Loew, 1845), P. Plantationis (Rondani, 1869), and P. Subtile bezzii (Hendel, 1913) have been recorded in Turkey for the first time. Wing pictures and distribution maps of the discovered species are given.
Taxonomical Investigations On The Fauna Of Opiinae (Hymenoptera: Braconidae) In Ardahan, Erzurum, Iğdır, And Kars Provinces Of The Turkish Northeastern Anatolian Region, Ahmet Beyarslan
Turkish Journal of Zoology
In order to determine the Braconidae fauna of Turkey, adult specimens of Opiinae were collected from various habitats of the Turkish northeastern Anatolian region using Malaise and light traps and sweeping nets between 2012 and 2014. In total, 86 species belonging to 7 genera are reported for the studied regions, among which 22 are recorded for the first time from Turkey: Biosteres (Biosteres) analis (Wesmael), Biosteres (Chilotrichia) clypealis (Thomson), B. (C.) sylvaticus (Haliday), Phaedrotoma zomborii (Papp), Opius (Adontopius) adentatus Fischer, O. (A.) nanosoma Fischer, Opius (Agnopius) austriacus Fischer, O. (A.) novosimilis Fischer, O. (A.) similoides Fischer, Opius (Allotypus) geniculatus Thomson, …
Oxytorinae, A New Subfamily For The Turkish Fauna (Hymenoptera: Ichneumonidae), Janko Kolarov, Sali̇ha Çoruh, İrfan Çoruh
Oxytorinae, A New Subfamily For The Turkish Fauna (Hymenoptera: Ichneumonidae), Janko Kolarov, Sali̇ha Çoruh, İrfan Çoruh
Turkish Journal of Zoology
Oxytorus luridator (Gravenhorst, 1820) is redescribed, figured, and reported for the first time from Turkey. A key for the Western Palearctic species of the genus Oxytorus Förster is given.
Chewing Lice (Phthiraptera: Amblycera, Ischnocera) Species Found On Birds In Turkey, With New Records And A New Host Association, Bi̇lal Di̇k, Esra Per, Ki̇raz Erci̇yas Yavuz, Eli̇f Yamaç
Chewing Lice (Phthiraptera: Amblycera, Ischnocera) Species Found On Birds In Turkey, With New Records And A New Host Association, Bi̇lal Di̇k, Esra Per, Ki̇raz Erci̇yas Yavuz, Eli̇f Yamaç
Turkish Journal of Zoology
This study was carried out between 2011 and 2014 to detect chewing louse species found on birds in Turkey. For this purpose, 246 birds were examined for lice. Thirty-three birds (13.4%) were found to be infested by 25 louse species; 17 Ischnoceran species belonging to 15 genera and 8 Amblyceran species belonging to 5 genera were recorded in this study. In this study, usually 1 or 2 louse species were detected on a single bird, and in only 2 cases, 3 louse species were found on the same bird. Rhynonirmus helvolus (Burmeister, 1838) and Saemundssonia sp. (nymph: N) from the …
A Contribution To The Alysiinae Of Southeastern Iran, With Description Of The Male Of Chorebus Longiarticulis, Shima Ghotbi Ravandi, Seyed Massoud Madjdzadeh, Francisco Javier Peris Felipo, Majid Askari Hesni, Ehsan Rakhshani
A Contribution To The Alysiinae Of Southeastern Iran, With Description Of The Male Of Chorebus Longiarticulis, Shima Ghotbi Ravandi, Seyed Massoud Madjdzadeh, Francisco Javier Peris Felipo, Majid Askari Hesni, Ehsan Rakhshani
Turkish Journal of Zoology
A survey was conducted from 2012 to 2013 in order to study the Alysiinae (Hymenoptera: Braconidae) species of the southeastern part of Iran. A total of 11 species belonging to 5 genera have been listed, of which 4 species, Dinotrema contracticorne (Fischer 1974), Synaldis ultima Fischer 1970, Chorebus parvungula (Thomson 1895), and Dacnusa abdita (Haliday 1839), are reported for the first time from Iran. In addition, the male of Chorebus longiarticulis Fischer, Lashkari Bod, Rakhshani and Talebi 2011 is recorded for the first time and described.
Spider Assemblages And Dynamics On A Seasonal Island In The Pripyat River, Belarus, Izabela Hajdamowicz, Lucyna Pilacka, Wlodzimierz Meissner
Spider Assemblages And Dynamics On A Seasonal Island In The Pripyat River, Belarus, Izabela Hajdamowicz, Lucyna Pilacka, Wlodzimierz Meissner
Turkish Journal of Zoology
Spider assemblages on a seasonal river meadow island were studied in spring 2006 and 2007. Samples were collected with a set of 20-30 pitfall traps once every 5 days. Altogether, 1179 spiders belonging to 30 species were collected. There were 5 constant dominant species: medium-sized wandering Pardosa prativaga, and small-sized air colonizers Oedothorax retusus, Erigone dentipalpis, Oedothorax fuscus, and Pachygnatha degeeri. The relatively low species diversity was higher in 2007 and grew throughout the season with the lowering of the water level. The total turnover of species involved the least abundant species (below 1% of the total), mainly Linyphiidae. Abundance …
Distribution Of Two Pine Processionary Moth Species In Turkey Evidences A Contact Zone, Kahraman İpekdal, Christian Burban, Carole Kerdelhue, Seli̇m Süalp Çağlar
Distribution Of Two Pine Processionary Moth Species In Turkey Evidences A Contact Zone, Kahraman İpekdal, Christian Burban, Carole Kerdelhue, Seli̇m Süalp Çağlar
Turkish Journal of Zoology
The pine processionary moths Thaumetopoea pityocampa and T. Wilkinsoni are among the most important Mediterranean pine defoliators. Although recent studies suggest that the two species may coexist in Turkey, the relevant literature lacks precise information on the occurrence and exact distribution of the two species in this country. In particular, whether the two sister taxa form a contact zone is still unknown. In this study, we aimed to reveal the limits of the ranges of the two species in Turkey by using nuclear (ITS-1, photolyase) and mitochondrial markers (COI). Multilocus molecular characterization of the two species showed for the first …
The Genus Macrocheles Latreille (Acari: Mesostigmata: Macrochelidae) From Kelkit Valley (Turkey), With Three Newly Recorded Mite Species, Hasan Hüseyi̇n Özbek, Durmuş Ali̇ Bal, Sali̇h Doğan
The Genus Macrocheles Latreille (Acari: Mesostigmata: Macrochelidae) From Kelkit Valley (Turkey), With Three Newly Recorded Mite Species, Hasan Hüseyi̇n Özbek, Durmuş Ali̇ Bal, Sali̇h Doğan
Turkish Journal of Zoology
This survey was carried out on the genus Macrocheles in Kelkit Valley, Turkey, during 2007-2012. Seven species, M. Muscaedomesticae (Scopoli, 1772); M. Glaber (Müller, 1860); M. Perglaber Filipponi and Pegazzano, 1962; M. Scutatus (Berlese, 1904); M. Merdarius (Berlese, 1889); M. Subbadius (Berlese, 1904); and M. Robustulus (Berlese, 1904), were recorded from the valley. M. Perglaber, M. Scutatus, and M. Subbadius are first records for the Turkish fauna. Original drawings and diagnoses for all known species of the genus from the valley are included. In addition, an identification key to the Turkish species of Macrocheles is provided here.
Carnivores From The Late Miocene Locality Of Hayranlı (Hayranlı, Sivas, Turkey), Şaki̇r Önder Özkurt, Erksi̇n Güleç, Ahmet Cem Erkman
Carnivores From The Late Miocene Locality Of Hayranlı (Hayranlı, Sivas, Turkey), Şaki̇r Önder Özkurt, Erksi̇n Güleç, Ahmet Cem Erkman
Turkish Journal of Zoology
The locality of Hayranlı-Sivas is situated in the central Anatolian plateau (Sivas, Turkey) and includes many fossil remains, including carnivores collected from 2 different spots. The aim of this study is to contribute to knowledge of carnivore evolution in Turkey based on the fossil specimens in Hayranlı-Sivas. The studied collection indicates the presence of the following taxa: Hyaenictitherium wongii, Hyaenictitherium intuberculatum, Lycyaena dubia, and Machairodus giganteus. L. Dubia is the first record from Anatolia. The material of each taxon was described and determined by comparison with other materials from various Eurasian localities. During the Early or Middle Turolian 9-7 Ma. …
Length-Weight And Length-Length Relationships For Three Endemic Cyprinid Species Of The Aegean Region (Turkey) With Proposed Standard Weight Equations, Daniela Giannetto, Ali̇ Serhan Tarkan, Feri̇t Akbaş, Ni̇ldeni̇z Top, Sevan Ağdamar, Uğur Karakuş, Laura Pompei̇, Massi̇mo Lorenzoni̇
Length-Weight And Length-Length Relationships For Three Endemic Cyprinid Species Of The Aegean Region (Turkey) With Proposed Standard Weight Equations, Daniela Giannetto, Ali̇ Serhan Tarkan, Feri̇t Akbaş, Ni̇ldeni̇z Top, Sevan Ağdamar, Uğur Karakuş, Laura Pompei̇, Massi̇mo Lorenzoni̇
Turkish Journal of Zoology
Empirical standard weight equations and length-weight and length-length relationships were estimated for Barbus pergamonensis, Capoeta bergamae, and Ladigesocypris irideus, three endemic cyprinid species of Turkey that are still not widely studied. To the best knowledge of the authors, empirical standard weight equations for the three species and L-W parameters for L. İrideus are given here for the first time. In this study, length and weight data for B. Pergamonensis, C. Bergamae, and L. İrideus were collected throughout the watercourses of Muğla Province and were used to develop species-specific Ws equations. The results were for B. Pergamonensis (total length [TL] range: …
Broad-Scale Ecological Distribution Of Dominant Macrozoobenthic Taxa Of The Northern Cilician Shelf, Eastern Mediterranean Sea: Crustaceans, Erhan Mutlu
Turkish Journal of Zoology
The distribution of crustaceans in 3 transects (İskenderun, Mersin, and Anamur bays, including depths of 10, 25, 50, 75, 100, and 200 m) located within Turkish coastal borders of the Cilician shelf was studied between 2005 and 2007 to show the association with habitat types, eutrophication level, and depth-dependent environmental parameters in representative months of each season (winter, spring, summer, and autumn). A total of 153 crustacean taxa were found. Of the specimens identified at species level, 93 species were distributed in the Mediterranean Sea and Atlantic Ocean, 12 in the Indian Ocean and the Red Sea, and 4 in …
Diet Of Barn Owl Tyto Alba In Central South Bulgaria As Influenced By Landscape Structure, Boyan Milchev
Diet Of Barn Owl Tyto Alba In Central South Bulgaria As Influenced By Landscape Structure, Boyan Milchev
Turkish Journal of Zoology
This study of the diet of Barn Owl Tyto alba analyzed pellets containing 18,810 prey specimens. Small mammals (98.2% by number, 97.5% by biomass) dominated, while birds, reptiles, amphibians, and insects constituted a negligible portion of the diet (1.8% by number, 2.5% by biomass). Voles (Microtus spp.) were the most numerous prey (35.3 ± 14.4%, range 14.6%-67.1%) in 9 localities (69.2%, n = 13 individually studied localities) and dominated the biomass in all diets (51.4 ± 14.1%, range 27.4%-78.2%). The lesser white-toothed shrew (Crocidura suaveolens) (20.8 ± 7.6%, range 7.3%-32.8%) was the most frequent prey in the other 4 localities …
Preliminary Report Of A Biometric Analysis Of Greater Pipefish Syngnathus Acus Linnaeus, 1758 For The Western Black Sea, Taner Yildiz, Uğur Uzer, Fi̇rdes Saadet Karakulak
Preliminary Report Of A Biometric Analysis Of Greater Pipefish Syngnathus Acus Linnaeus, 1758 For The Western Black Sea, Taner Yildiz, Uğur Uzer, Fi̇rdes Saadet Karakulak
Turkish Journal of Zoology
The main objective of this study was to analyze the differences and similarities in morphometric characteristics among specimens of greater pipefish Syngnathus acus Linnaeus, 1758 that were collected and described based on data from bottom-trawl surveys and commercial trawl fisheries in the western Black Sea between September 2010 and October 2011. A total of 280 specimens were analyzed, of which 191 were female and 89 were male. Female individuals ranged from 15.6 to 33.8 cm in total length, whereas male individuals ranged from 16.6 to 39.2 cm. For the biometric analysis, 14 morphometric characteristics were analyzed. The females and males …
Monthly Variations In The Shell Structure Of Two Freshwater Ostracod (Crustacea) Species In Karapınar Spring (Bolu, Turkey), Okan Külköylüoğlu, Manuel R. Palacios-Fest, Dirk Baron, Necmetti̇n Sari
Monthly Variations In The Shell Structure Of Two Freshwater Ostracod (Crustacea) Species In Karapınar Spring (Bolu, Turkey), Okan Külköylüoğlu, Manuel R. Palacios-Fest, Dirk Baron, Necmetti̇n Sari
Turkish Journal of Zoology
The variations of environmental conditions (T °C, pH, Δ13C, Δ18O, Mg/Ca, and Sr/Ca) for two ostracod species (Psychrodromus olivaceus, Potamocypris similis) were analyzed and compared to identify the controls of environmental parameters on the chemical and isotopic composition of their valves. The specimens were collected from Karapınar Spring (Bolu, Turkey) between October 2009 and November 2010. The species were observed throughout the year. Psychrodromus olivaceus showed relatively constant Mg/Ca ratios during the study period, whereas those of P. Similis showed more variability. The ratio was also significantly different (P < 0.05) between the two species. We did not find significant correlation between water temperature and either of the species' Mg/Ca ratios. The stable isotope record for P. Similis was very patchy, showing a small range of values consistent with the groundwater source, similar to the behavior of Sr/Ca. The Sr/Ca ratio displayed little variation throughout the year, suggesting hydrochemical stability over time, most likely in response to the groundwater source. The stable isotope data displayed pronounced variability for P. Similis but little for P. Olivaceus, suggesting that the former may be responding to seasonality, whereas the latter responds to groundwater.