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Full-Text Articles in Life Sciences
Age, Growth And Maturation Of Swordtip Squid (Photololigo Edulis) In The Southern East China Sea, Kae-Yih Wang, Kuo-Tien Lee, Cheng-Hsin Liao
Age, Growth And Maturation Of Swordtip Squid (Photololigo Edulis) In The Southern East China Sea, Kae-Yih Wang, Kuo-Tien Lee, Cheng-Hsin Liao
Journal of Marine Science and Technology
The reproductive biology, and age and growth of the swordtip squid (Photololigo edulis) in the East China Sea were examined based on the growth ring of statoliths from 1797 specimens during the period of November 2002 to November 2004. The maximum age observed was 261 days in female and 253 days in male, an evidence showing that swordtip squid has a longevity of about 9 months in both sexes. Growth in mantle length (ML) and body weight (BW) in both sexes was best described by the exponential model. There was significantly difference in somatic or statolith growth between the sexes. …
Age And Growth Of The Mesopotamian Spiny Eel, Mastacembelus Mastacembelus(Banks & Solender, 1794), From Southeastern Anatolia, Aysun Gümüş, Erdi̇nç Şahi̇nöz, Zafer Doğu, Nazmi̇ Polat
Age And Growth Of The Mesopotamian Spiny Eel, Mastacembelus Mastacembelus(Banks & Solender, 1794), From Southeastern Anatolia, Aysun Gümüş, Erdi̇nç Şahi̇nöz, Zafer Doğu, Nazmi̇ Polat
Turkish Journal of Zoology
Mesopotamian spiny eels, Mastacembelus mastacembelus (Banks & Solender, 1794), were collected from a large dam lake located on the Euphrates River in order to determine the most reliable ageing method among different hard structures and to estimate growth parameters. Vertebra, otolith, and opercle series were removed from 195 individuals. Vertebrae displayed the most interpretable annulus formations. Total length ranged from 14.4 cm to 76.9 cm and total weight ranged from 6.0 g to 950.0 g. The length and weight frequency distribution was significantly different between the 2 sexes (K-S test, P < 0.001). The length-weight relationship, determined as W = 0.004TL^{2.84} (r = 0.98), revealed no sex-based significant difference (GLM, P > 0.05). Age classes ranged from 1 to 21 years …
On The Growth Of The Scaldfish Arnoglossus Laterna (Walbaum, 1792) From İzmir Bay, Central Aegean Sea, Di̇lek Uçkun İlhan, Sencer Akalin, Okan Özaydin, Zafer Tosunoğlu, Semi̇h Leblebi̇ci̇
On The Growth Of The Scaldfish Arnoglossus Laterna (Walbaum, 1792) From İzmir Bay, Central Aegean Sea, Di̇lek Uçkun İlhan, Sencer Akalin, Okan Özaydin, Zafer Tosunoğlu, Semi̇h Leblebi̇ci̇
Turkish Journal of Zoology
Scaldfish (Arnoglossus laterna) (n = 1892) were caught in İzmir Bay (Aegean Sea) from January 2005 to December 2006. Total length and weight of all specimens ranged from 3.9 to 16.0 cm and from 0.47 to 41.63 g, respectively. The overall ratio of females to males was 1:1.91. The length-weight relationships for females, males, and all specimens combined were estimated, respectively, as W = 0.0096 × L^{2.921}, W = 0.0111 × L^{2.857}, and W = 0.0096 × L^{2.917}; and the parameters of the von Bertalanffy growth equations were, respectively, L_{\infinity}= 17.58, 15.36, and 17.19 cm; k = 0.412, 0.461, and …
Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki
Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki
Turkish Journal of Zoology
The Caspian Sea forms the southern limit of the distribution range of the three-spined stickleback (Gasterosteus aculeatus), but little is known about its life history in this area. A total of 362 specimens were collected from the Gomishan wetland (southeast Caspian Sea, Iran) to describe the stickleback's life history characteristics. Samples were taken monthly between February and July of 2008. The maximum ages of the population observed were 2+ years for males and 3+ years for females. The length-weight relationship (LWR) was estimated as W = 0.0042TL^{3.711} for immature specimens, W = 0.0095TL^{3.1328} for males, and W = 0.0057TL^{3.4678} for …
Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Turkish Journal of Zoology
Age, growth, and reproduction of the large-scaled gurnard were studied in the central Aegean Sea to provide fisheries managers with the essential data for science-based management. A total of 2342 samples were collected by trawl hauls between July 2004 and June 2007 from İzmir Bay (Turkey). The size of the samples ranged from 3.4 to 15.2 cm total length and the samples were composed of 35.2% females, 25.7% males and 39.1% immature individuals, with a female to male ratio of 1:0.73. The length-weight relationship was calculated as W = 0.0086L^{3.16} for all samples. The age composition of the samples was …
Age, Growth, Length-Weight Relationship And Reproduction Of The Striped Seabream (Lithognathus Mormyrus L., 1758) (Sparidae) In The Beymelek Lagoon (Antalya, Turkey), Yilmaz Emre, İsmet Balik, Çeti̇n Sümer, D. Aytuğ Oskay, H. Özgür Yeşi̇lçi̇men
Age, Growth, Length-Weight Relationship And Reproduction Of The Striped Seabream (Lithognathus Mormyrus L., 1758) (Sparidae) In The Beymelek Lagoon (Antalya, Turkey), Yilmaz Emre, İsmet Balik, Çeti̇n Sümer, D. Aytuğ Oskay, H. Özgür Yeşi̇lçi̇men
Turkish Journal of Zoology
Age, growth, length-weight relationship and reproduction were investigated for striped seabream (Lithognathus mormyrus L., 1758) collected from Beymelek Lagoon (Antalya, Turkey) between February 2006 and January 2007. The ages of striped seabream ranged from 0 to 3 years for males and from 0 to 4 years for females. Their total lengths and weights ranged between 14.4 and 26.4 cm and 42 and 297 g for males and 14.3 and 27.4 cm and 40 and 329 g for females, respectively. The growth parameters of the von Bertalanffy equation were: L_{\infinity} = 28.3 cm, K = 0.456 year^{-1} and t_0 = -1.859 …
Growth And Length-Weight Relationships Of The Horse Mackerel, Trachurus Mediterraneus Ponticus (Aleev, 1956), Off The Bulgarian Black Sea Coast, Maria Hristova Yankova, Violin Stoyanov Raykov, Dimitar Borisov Gerdzhikov, Petya Bogomilova Frateva
Growth And Length-Weight Relationships Of The Horse Mackerel, Trachurus Mediterraneus Ponticus (Aleev, 1956), Off The Bulgarian Black Sea Coast, Maria Hristova Yankova, Violin Stoyanov Raykov, Dimitar Borisov Gerdzhikov, Petya Bogomilova Frateva
Turkish Journal of Zoology
Between April 2007 and October 2008 we collected 1995 horse mackerel specimens from the territorial waters of the Bulgarian Black Sea. Age, length, and weight of these specimens were determined to estimate length-weight relationships and age composition. The present study utilized otolith characterization to determine age. The sex ratio was 1:1.36686 (M:F). The prevalent age classes were 2+, 3+, and 4+. The exponent b of equation resulted in the value 3.3046, which indicates that the weight growth is positive allometric. Growth parameters of the von Bertalanffy equation were separately evaluated for females and males as follows: L_{\infinity} = 19.66, K …