Results 131 to 140 of about 4,309,103 (234)

Effectiveness of Soybean Meal as a Feed Supplement on Gonadal Maturation, Gonadosomatic Index (GSI), Hepatosomatic Index (HSI), and Spawning Success of Female Broodstock Catfish

open access: yesNekton
The increasing demand for catfish (Clarias sp.) consumption necessitates a sustainable supply of broodstock and seed for aquaculture. One of the main constraints in meeting this demand is the low gonadal maturation rate of catfish outside the natural spawning season. Reproductive hormones play a central role in regulating gonadal maturation through the
Vika Maulidiyah   +6 more
openaire   +1 more source

Population structure and reproductive biology of Loricariichthys melanocheilus Reis & Pereira, 2000 (Siluriformes: Loricariidae) in the rio Ibicuí, Brazil

open access: yesNeotropical Ichthyology
The objective of this study was to analyze population structure (spatial distribution, seasonal distribution and distribution by length classes, sex ratio and length-weight relationship) and aspects of the reproductive biology of Loricariichthys ...
Éverton Luís Zardo   +1 more
doaj   +1 more source

Population dynamics and seasonal variation in biological characteristics of black sea bream (Acanthopagrus schlegelii) in Zhanjiang coastal waters, China

open access: yesFrontiers in Marine Science
This study examined the population dynamics and seasonal variation (winter-summer) in the biological characteristics of black sea bream (Acanthopagrus schlegelii) in Zhanjiang coastal waters, China.
Hagai Nsobi Lauden   +6 more
doaj   +1 more source

Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico

open access: yesRevista de Biología Tropical, 2005
The reproductive season of tilapia was studied by monthly samplings at Emiliano Zapata dam, Morelos State, Mexico. From February 1999 through February 2000 a sample of 50 fish was taken from the commercial catch (castnet, 6.5 cm of mesh size).
B Peña-Mendoza   +3 more
doaj  

Zootechnical and reproductive performance of juvenile male <i>Astyanax lacustris</i> (Yellowtail Lambari) cultivated in Biofloc Technology (BFT) and Recirculating Aquaculture System (RAS). [PDF]

open access: yesAnim Reprod
Lima JJF   +11 more
europepmc   +1 more source

Determination of the spawning time and changes in the reproduction cycle of ribbon fish, Trichiurus lepturus, according to the hepatosomatic index and gonadosomatic index

open access: yes, 1997
The ribbon fishes, belonging to the family Trichiuridae, are one of the most important protein resources in the Indian Ocean. A considerable density of the dominant species of this family, Trichiurus lepturus has been observed in the Oman Sea. During the conducted cruises in the northern part of the Oman Sea, gonadosomatic index (GSI) and hepatosomatic
Oryan, Sh.   +3 more
openaire   +2 more sources

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