Results 81 to 90 of about 2,561 (172)

Reproductive biology of Yellowfin Seabream Acanthopagrus latus in coastal waters of Hormozgan [PDF]

بوم‌شناسی آبزیان, 2012
Some reproductive biology features of Yellowfin Seabream Acanthopagrusl atus including gonadosomatic index, hepatosomatic index, sex ratio, macroscopic and microscopic survey of gonad development, frequency of different maturationstages and absolute and ...
Shahlah Nikkhah Khaje Ataei, Iman Sourinejad, Ehsan Kamrani, Mehdi Ghodrati Shojaei, Majid Shahsavari, Mohammad Asadi   +5 more
doaj  

EFFECTS OF ZINC AND CADMIUM ON CONDITION FACTOR, HEPATOSOMATIC AND GONADOSOMATIC INDEX OF Oreochromis niloticus

, 2019
Effects of Zn and Cd on condition factor (CF), hepatosomatic (HIS) and gonadosomatic (GSI) of Oreochromis niloticus, after exposing the animals to 10 % of their LC50 values, namely 6.0 ppm Zn and 1.6 ppm Cd, over 7, 15, and 30 days. Standard mathematical formulations were used in determining the mentioned parameters.
Çiftçi N., Ay Ö., Karayakar F., Cicik B., Erdem C.   +4 more
openaire   +2 more sources

Toxic Effects of Lead Exposure on Freshwater Climbing Perch, Anabas testudineus, and Bioremediation Using Ocimum sanctum Leaf Powder

Toxics
The acute and chronic toxicity of lead to Anabas testudineus was determined in this study using static replacement bioassay testing. During the chronic toxicity studies, an experiment on the bioremediation of lead toxicity using Ocimum sanctum leaf ...
Nimai Chandra Saha, Arnab Chatterjee, Priyajit Banerjee, Ritwick Bhattacharya, Auroshree Sadhu, Paolo Pastorino, Shubhajit Saha   +6 more
doaj   +1 more source

Length-Weight Relationships, Reproduction, Hepatosomatic Index of The Lesser Spotted Catshark, Scyliorhinus canicula [L.] The Sea of Marmara, Turkey

Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
Some biological aspects of 91 lesser spotted catshark Scyliorhinus canicula [L.] were examined. The samples were caught with trawl hauls from Bandırma Bay in the years of 2013-2014. Total lenghts of fishes ranged from 18.0-47.4 cm while their weights ranged from 28.78-583.78 g. It was observed that lenght-weight increased allometrically. As the overall
Koç, Hatice Torcu, Erdoğan, Zeliha
openaire   +2 more sources

Prevalence and Intensity Effects of Anisakidae Nematode on Eastern Baltic Cod (Gadus morhua Linnaeus, 1758) Condition Factors and Energy Reserves

Fishes
Over the past few decades, the population of cod in the Eastern Baltic has faced numerous challenges due to environmental changes, overfishing, and predation, as well as the effects of infection by third-stage larvae of the Anisakidae parasite in the ...
Maija Selezņova, Ēriks Krūze, Aivars Cīrulis, Tatjana Baranova, Maira Mateusa, Ivo Šics, Kārlis Heimrāts, Jānis Gruduls, Laura Briekmane, Gunita Deksne   +9 more
doaj   +1 more source

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

Nekton
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, Rizky Kusma Pratiwi, Anissa Aprilia Nurkhasanah, Andi Masriah, Amalia Febryane Adhani Mazaya, Maura Yasmin Dhia, Fajar Maulana Akmal Firdaus   +6 more
openaire   +1 more source

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

Neotropical 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, Everton Rodolfo Behr   +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

Frontiers 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, Shaoliang Lyu, Alma Alfatat, Happiness Moses Mwemi, Jamaluddin Fitrah Alam, Ning Chen, Xuefeng Wang   +6 more
doaj   +1 more source

Growth, feed utilization, survival and body composition of fingerlings of Slender walking catfish, Clarias nieuhofii, fed diets containing different protein levels [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2012
The effects of test diets, containing different dietary protein levels (32, 36, 40, and 44%), on growth, feed conversionrate and survival of slender walking catfish (Clarias nieuhofii) fingerlings were studied.
Anut Kiriratnikom, Suphada Kiriratnikom
doaj  

Microplastic contamination in the endemic Fiji maskray (Neotrygon romeoi)

Frontiers in Marine Science
Plastic waste accumulates in coastal environments, posing risks to marine organisms and the human communities that depend on them. Fiji relies heavily on inshore fisheries, yet the extent and physiological implications of microplastic (MP) contamination ...
Ramona Davuke, Waisiki Sevakarua, Tom Vierus, Kerstin Glaus   +3 more
doaj   +1 more source