Results 61 to 70 of about 10,315 (217)

Length-weight relationship and organ indices of pond raised and wild population of C. gariepinus (Burchell 1822) pisces-Claridae [PDF]

, 1999
Samples of C. gariepinus collected from the wild and cultured populations in Plateau and Niger States of Nigeria were analyzed for length-weight relationship and organ indices (Gonadosomatic index (GSI), hepatosomatic index (HSI), renalsomatic index (RSI)
Tsadu, S.M.
core  

The physiological response of juvenile diploid and triploid Arctic charr Salvelinus alpinus to exhaustive exercise

Journal of Fish Biology, EarlyView.
Abstract Triploidy is an effective tool for producing sterile fishes but often results in impaired performance in commercial aquaculture. In light of this, our study compared the physiological response to exhaustive exercise in juvenile diploid and triploid Arctic charr Salvelinus alpinus, a polar species with great potential for aquaculture.
John D. Clark, Tillmann J. Benfey
wiley   +1 more source

Conservation Challenges for Macrognathus acuelatus: A Case Study of Threatened Fish in Bengawan Solo and Brantas Rivers, East Java

Journal of Aquaculture Science
Macrognathus aculeatus is a local fish from the Bengawan Solo and Brantas Rivers threatened with extinction. Due to the lack of literacy on the biology of this fish.
Nida'an Khofiyyah, Akhmad Taufiq Mukti, Laksmi Sulmartiwi   +2 more
doaj   +1 more source

Using the gonadosomatic index to estimate the maturity ogive: application to Chilean hake (Merluccius gayi gayi) [PDF]

ICES Journal of Marine Science, 2014
Abstract The proportion of mature fish at age or length is one of the most important population attributes in assessing reproductive potential. This proportion is usually named the maturity ogive. The most crucial step in estimating this proportion deals with maturity staging assessed by macroscopic or histology analysis.
Flores, A., Wiff, Rodrigo, Diaz, E.
openaire   +4 more sources

Plasticity in the reproductive biology of Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake following lake trout Salvelinus namaycush invasion

Journal of Fish Biology, EarlyView.
Abstract Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake are the focus of intensive conservation efforts due to the threat of predation by invasive lake trout Salvelinus namaycush. Suppression gillnetting has reduced the abundance of predatory lake trout, and the Yellowstone cutthroat trout population is recovering ...
Michelle A. Briggs, Molly A. H. Webb, Christopher S. Guy, Todd M. Koel   +3 more
wiley   +1 more source

Reproductive parameters of Oreochromis mossambicus in Laguna de Los Patos, Cumaná, Venezuela [PDF]

Brazilian Journal of Biology
A total of 381 specimens of the tilapia Oreochromis mossambicus collected monthly from May 2017 to May 2018 in the Laguna de Los Patos, Cumaná, Venezuela, to evaluate reproductive parameters of this non-native species.
T. Urbano, P. Velásquez, C. Lodeiros, A. N. Maeda-Martínez   +3 more
doaj   +1 more source

Gonadosomatic index and weight/length relationship in females of three penaeoidean shrimps impacted by fisheries on the southeastern Brazilian coast

Nauplius, 2020
The aim of this study was to evaluate the gonadosomatic index (GSI) and the weight/length ratio in important shrimp populations (Xiphopenaeus kroyeri (Heller, 1862), Litopenaeus schmitti (Burkenroad, 1936), Rimapenaeus constrictus (Stimpson, 1874)) from ...
Renan Augusto Pereira dos Santos, Alexandre Ribeiro da Silva, Isabela Ribeiro Rocha de Moraes, Mariana Antunes, Ana Elisa Bielert Lopes, Rogério Caetano da Costa, Antonio Leão Castilho   +6 more
doaj   +1 more source

Reproductive parameters of wild and hatchery‐reared sea trout (Salmo trutta m. trutta L.) females from the Łeba River (southern Baltic Sea)

Journal of Fish Biology, EarlyView.
Abstract Sea trout Salmo trutta m. trutta L. has high socioeconomic and ecological importance in the Atlantic region; therefore, stocking hatchery‐reared fish is widely practiced for stock enhancement and recovery of wild populations. In this study, fecundity of wild and stocked hatchery‐reared sea trout sampled from the Łeba River (southern Baltic Sea
Adam M. Lejk, Piotr Hliwa
wiley   +1 more source

Biological aspects and population dynamics of the European pilchard Sardina pilchardus (Walbaum, 1792) in the southeastern Mediterranean waters

Journal of Fish Biology, EarlyView.
Abstract The European pilchard, Sardina pilchardus, is a key small pelagic fish sustaining Mediterranean ecosystems and fisheries. This study represents the first comprehensive biological and population dynamics assessment of the European pilchard by applying the length‐based spawning potential ratio (LB‐SPR) approach to S.
Mohab Badreldin, Reda M. Fahim, Lafi Al Solami, Hatem H. Mahmoud   +3 more
wiley   +1 more source

Reproductive Biology of Puntius sophore in Bangladesh

Fishes, 2018
Pool barb (Puntius sophore) is an important small indigenous species of Bangladesh, belonging to the family Cyprinidae of the order Cypriniformes.
Tajmira Hasan, Md. Foysul Hossain, Md. Mamun, Md. Jahangir Alam, Mohammad Abdus Salam, S. M. Rafiquzzaman   +5 more
doaj   +1 more source