Results 41 to 50 of about 3,629,790 (173)

Effects of copper on hepatosomatic index, gonadosomatic index and condition factor of Oreochromis niloticus (L. 1758)

, 2007
The effects of copper on gonadosomatic and hepatosomatic indices and on condition factor of Oreochromis niloticus were studied by exposing the animals to 0.1 mg/L Cu for 30 days.
Erdem C., Cicik B., Karaytug S., Ay Ö.
core   +2 more sources

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu, I. A. Anjola, L. O. Fasasi, D. P. Fadipe, A. T. Afuye, F. O. Fasanya, O. E. Oke   +6 more
wiley   +1 more source

Reproductive biology of Caspian vimba, Vimba vimba (L.), in the coastal waters of the southwestern Caspian Sea

Archives of Polish Fisheries, 2015
The reproduction biology of Caspian vimba, Vimba vimba (L.), was investigated on the southwestern coast of the Caspian Sea using 712 fish specimens collected at three fisheries catch stations located in Talesh, Anzali, and Kiashahr over a two-year period
J. Imanpour Namin F. Tari, Shahram Abdolmalaki, Hadavi M.   +2 more
doaj   +1 more source

The integrated reproductive response: the scope for seasonal phenotypic flexibility shapes reproductive outcomes across fish populations

Oikos, EarlyView.
Across north‐temperate environments, rapid environmental change has disrupted the seasonal life histories of resident organisms, decreasing the reliability of environmental cues. Flexible responses capable of buffering the effects of unpredictable environmental variation to defend performance and reproductive outcomes may thus be key to species‐ and ...
Timothy J. Fernandes, Sofia Pereira, Brian J. Shuter, Bailey C. McMeans   +3 more
wiley   +1 more source

SEASONAL CHANGES OF GONADOSOMATIC INDEX OBSERVED IN THE FRESHWATER FISH CHANNA PUNCTATUS [PDF]

, 2011
In the present study the values of gonadosomatic index of freshwater fish Channa punctatus collected from Wadali lake near Amravati region of Maharashtra during 2006- 07. The minimum gonadosomatic index for females (0.285) observed in winter season.
S. S. GIJARE, V. T. TANTARPALE, SUNITA KAPIL, K. M. KULKARNI   +3 more
core  

Reproductive cycle and sexual maturity size of landed Selene peruviana (Perciformes: Carangidae) on the coasts of the Ecuadorian Pacific

Ciencias Marinas, 2023
The Peruvian moonfish (Selene peruviana) is an important fisheries resource that is landed in the main fishing harbors of Ecuador. At the local level, little information is available regarding the biology of this species, which hinders the development ...
Kléver Mendoza-Nieto, Mila C-Soriguer Escofet, Maribel Carrera-Fernández   +2 more
doaj   +1 more source

Assessment of Oxidative Stress, Vitellogenin, and Human Health Risks Derived From Nile Tilapia Exposed to Metals and Metalloids in Southeastern Brazil

Environmental Toxicology, EarlyView.
ABSTRACT Urban coastal lagoons are highly vulnerable ecosystems increasingly affected by metal contamination, as well as multiple anthropogenic stressors. This study evaluated ecotoxicological and human health risks associated with chronic metal exposure in Nile tilapia (Oreochromis niloticus) from an anthropogenically impacted lagoon in southeastern ...
Julia Araújo Alves, Priscila M. O. Muniz Cunha, Shênia Patrícia Corrêa Novo, Lorena Oliveira Souza Soares, Tatiana Dillenburg Saint‐Pierre, Fábio Veríssimo Correia, André Luís de Sá Salomão, Rachel Ann Hauser‐Davis, Enrico Mendes Saggioro   +8 more
wiley   +1 more source

Increased energetic cost of movement reduces reproductive output in zebrafish at different temperatures and water flow rates

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Locomotion consumes a large proportion of individual energy budgets and may impose energetic constraints on other fitness‐related traits particularly under variable environmental conditions.
Miki Jahn, Frank Seebacher
wiley   +1 more source

After All, Size Does Matter: Size and Trachemys Scripta Reproduction Traits at the Western Limit of Its European Distribution

Integrative Zoology, EarlyView.
‐ Female T. scripta exhibit a clear size‐dependent reproductive investment, where larger plastron length is positively associated with all key reproductive traits. ‐ Female T. scripta reach sexual maturity at a plastron length of approximately 15–18 cm. ABSTRACT In invasive species, reproductive success may determine invasion outcomes and influence the
João Rato, Shaquille Matthys, Pedro Brandão, Olivia Hartmann, Stefano Canessa, Pedro Anastácio, Filipe Banha   +6 more
wiley   +1 more source

Length-Weight Relationship, Condition Factor and Fecundity of African Snakehead Parachanna obscura from the Anambra River, South East Nigeria

Croatian Journal of Fisheries, 2019
The length-weight relationship, condition factor, fecundity, gonadosomatic and hepatosomatic indices of Parachanna obscura from the Anambra River were determined between December 2015 and June 2016. Eighty-three live samples of P.
Osho Friday Elijah, Usman Ridwan Abiola
doaj   +1 more source