نتایج جستجو برای: length at first maturity

تعداد نتایج: 4743450  

H Hoseinpour, B Bahrami Kamangar , E Ghaderi ,

Growth and reproductive attributes were determined for Capoeta damascina, an endemic fish species from west of Iran. A total of 147 specimens of both sexes were sampled monthly from November 2008 to October 2009. The overall sex ratio was female biased. Males were aged 0-4 years and females 0-5 years. The von Bertalanffy growth parameters were estimated as Linf=34.81 cm, k=0.27 year-1, t0=-0.65...

F. Kaymaram, M. Darvishi, M. S. Sadeghi, S. A. Hossainy, S. A. Talebzadeh,

  Reproduction and spawning patterns of the king fish (Scomberomorus commerson) were studied in the Persian Gulf (Hormozgan Province) and Oman Sea from Oct 2006 to Sep 2007. A total of 1120 fish was collected from different landing sites along the Iranian waters. Yearly analysis of the reproductive stages and gonadosomatic index showed a single reproductive cycle beginning in March and continue...

B Bahrami Kamangar, E Ghaderi H Hoseinpour

Growth and reproductive attributes were determined for Capoeta damascina, an endemic fish species from west of Iran. A total of 147 specimens of both sexes were sampled monthly from November 2008 to October 2009. The overall sex ratio was female biased. Males were aged 0-4 years and females 0-5 years. The von Bertalanffy growth parameters were estimated as Linf=34.81 cm, k=0.27 year-1, t0=-0.65...

F. Kaymaram, M. Darvishi M. S. Sadeghi S. A. Hossainy S. A. Talebzadeh

  Reproduction and spawning patterns of the king fish (Scomberomorus commerson) were studied in the Persian Gulf (Hormozgan Province) and Oman Sea from Oct 2006 to Sep 2007. A total of 1120 fish was collected from different landing sites along the Iranian waters. Yearly analysis of the reproductive stages and gonadosomatic index showed a single reproductive cycle beginning in March and continue...

Journal: :Journal of limnology and freshwater fisheries research 2022

In this study, the length at first maturity and growth characteristics of big scale sand smelt (Atherina boyeri Risso 1810) were investigated in İznik Lake. Catching trials conducted on a monthly basis 4 different stations lake between March 2014 February 2015 beach seine net with 6 mm codend mesh size was used samplings. The overall sex ratio subsample founded as 1:1.46 (F:M; 1180 females, 172...

2004
Georg H. Engelhard Mikko Heino

The Norwegian spring-spawning herring (Clupea harengus) population collapsed to the state of commercial extinction in the late 1960s; the stock remained at extremely low levels for over two decades, but has recovered fully since the 1980s. It is known that the collapse coincided with strong changes in maturation characteristics. However, the long-term patterns of maturation in this stock have r...

Journal: :international journal of aquatic biology 0
naser uddin sk regional centre of central marine fisheries research institute (icar), visakhapatnam-530 003, andhra pradesh, india shubhadeep ghosh regional centre of central marine fisheries research institute (icar), visakhapatnam-530 003, andhra pradesh, india joydev maity department of aquaculture management & technology, vidyasagar university, midnapore - 721102, west bengal, india

the present paper studies the reproductive biology, maturation size and sex ratio of penaeus monodon collected from digha fishing grounds, india during 2011-2013.  a total of 633 individual of p. monodon were examined and among them 242 were males and 391 were females. the overall yearly sex ratio was observed to be 1:1.6 (males: females). based on the results, the spawning season of p. monodon...

Journal: :international journal of aquatic biology 0
caner enver özyurt çukurova university, faculty of fisheries, 01330 adana, turkey. erdoğan çiçek nevşehir haci bektas veli university, faculty of art and sciences, department of biology, 50300 nevşehir, turkey. dursun avşar çukurova university, faculty of fisheries, 01330 adana, turkey. hacer yeldan çukurova university, faculty of fisheries, 01330 adana, turkey. meltem manaşırlı çukurova university, faculty of fisheries, 01330 adana, turkey.

this study examined the spawning characteristics and distribution of mullus barbatus and upeneus moluccensis in babadillimani bight, in the northeastern mediterranean (near mersin, turkey) between of may 1999 and april 2000. sampling was carried out monthly at depths of 0-50 m, 50-100 m and >100 m using commercial trawl net mesh size 22 mm knot to knot. the results showed no difference between ...

Reproduction and spawning patterns of the Yellowtail scad (Atule mate) were studied in the Persian Gulf and Oman Sea (Hormozgan coastal waters) from December 2016 to November 2017. A total of 447 fish were collected from Bandar Lengeh, Qeshm Island, Bandar Abbas, and Bandar Jask landing sites. Minimum and maximum fork lengths of this species were 10 and 33 cm, with average 20.63±1.73 cm. The to...

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