Results 71 to 80 of about 4,371,888 (200)

Lactiplantibacillus plantarum I Induces Gonad Growth in the Queen Scallop Aequipecten opercularis (Linnaeus, 1758) under Conditions of Climate Change

Fishes
Climate change has presented a serious problem in recent times, which is why a new approach is being sought in terms of aquacultural food quality. In this study, the influence of temperature increase (by 2 °C) and pH decrease (by 0.2) was investigated on
Ines Kovačić, Petra Burić, Iva Čanak, Ante Žunec, Anamarija Panić, Valentina Kolić, Neven Iveša, Jadranka Frece, Mauro Štifanić   +8 more
doaj   +1 more source

Tracking the Pulse of the Dunes: Seasonal Metabolic Responses of Liolaemus arambarensis to Climatic Variability

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 6, Page 568-580, July 2026.
ABSTRACT Seasonal environmental fluctuations profoundly influence ectothermic vertebrates, regulating their physiology, metabolism, and life cycles. This study investigated the metabolic and morphometric seasonal dynamics of the subtropical sand lizard Liolaemus arambarensis, an endangered species endemic to the coastal dunes of southern Brazil.
Artur Antunes Navarro Valgas, Gustavo Kasper Cubas, Diogo Reis de Oliveira, Jessica Fonseca Araujo, Guendalina Turcato Oliveira, Laura Verrastro   +5 more
wiley   +1 more source

Length-weight relationships, condition factor, gonadosomatic index-based size at first sexual maturity, spawning season and fecundity of Aspidoparia morar (Cyprinidae) in the Jamuna River (Brahmaputra River distributary), northern Bangladesh

, 2013
Summary The present study describes the length-weight relationships (LWRs), length-length relationships (LLRs), Fulton's condition factor (KF), size at first sexual maturity, spawning season, sex ratio and fecundity of the Morari Aspidoparia morar ...
M. Hossain, M. Hossain, M. S. Arefin, M. S. Mohmud, Md Imam Hossain, M. Jewel, M. Rahman, F. Ahamed, Z. Ahmed, J. Ohtomi   +9 more
semanticscholar   +1 more source

Vertical Habitat Use by Japanese Jack Mackerel Trachurus japonicus Inferred From a Biologging Study in Tokyo Bay

Fisheries Oceanography, Volume 35, Issue 4, Page 518-531, July 2026.
ABSTRACT The movement ecology of Trachurus japonicus in the adult stage remains poorly understood because observing their underwater behavior over long periods is challenging. This study aimed to examine vertical habitat use by T. japonicus using electronic tags. Ninety fish were tagged and released in November 2022 in Tokyo Bay, Japan.
Junji Kinoshita, Yuki Fujinami, Junichi Imoto, Tohya Yasuda   +3 more
wiley   +1 more source

Physicochemical Properties and Biological Conditions of Labeobarbus spp. in Gumaro River, Lake Tana Sub‐Basin, Ethiopia

Aquaculture, Fish and Fisheries, Volume 6, Issue 3, June 2026.
This study examines the physicochemical characteristics and biological status of endemic Labeobarbus spp. in the Gumaro River, Ethiopia. Seasonal changes strongly affect water quality, with nutrient concentrations peaking during the rainy season. Biological indicators show species‐specific growth patterns and identify the river as an important spawning
Gizachew Teshome, Abebe Getahun, Seyoum Mengistou, Minwyelet Mingist, Biniam Hailu, Dagnew Mequanent   +5 more
wiley   +1 more source

Reproductive Biology and Hormonal Induction Protocols for Labeo dero (Hamilton 1822): A Foundational Framework for Conservation Aquaculture in Bangladesh

Aquaculture, Fish and Fisheries, Volume 6, Issue 3, June 2026.
A reproductive biology study of Labeo dero reveals a July breeding peak with female GSI reaching 14.9 %. Induced breeding trials establish optimal doses of 6 mg kg−1 (♀) and 3 mg kg−1 (♂) carp pituitary extract (94.7 % spawning) and 0.6 mL kg−1 (♀) and 0.3 mL kg−1 (♂) Ovuhom (82.3 % spawning).
Saokat Ahamed, Khandaker Rashidul Hasan, Neaz A. Hasan, Seikh Razibul Islam, Md. Maliha Hossain Mou, Istiaque Haidar   +5 more
wiley   +1 more source

Gonadosomatic Index and Testis Morphology of Common Carp (Cyprinus carpio) in Rivers Contaminated with Estrogenic Chemicals.

Journal of Veterinary Medical Science, 2002
To study the effect of estrogenic chemicals on fish, the gonadosomatic index (GSI = [testis weight/body weight] x 100) and testis histology of mature common carp (Cyprinus carpio) from 2 contaminated sites (Ishizu and Wada rivers, Osaka) and a control site were examined between June 1998 and March 2001. The concentration of nonylphenol, bisphenol A and
HASSANIN, Amin, KUWAHARA, Sachi, NURHIDAYAT, TSUKAMOTO, Yasuhiro, OGAWA, Kazushige, HIRAMATSU, Kazuya, SASAKI, Fumihiko   +6 more
openaire   +3 more sources

Gonadal Histology and Spawning Season of Otolithoides pama in the Thanlwin River Estuary

Aquaculture, Fish and Fisheries, Volume 6, Issue 3, June 2026.
ABSTRACT The spawning season of Otolithoides pama in the Thanlwin estuary was estimated through gonadosomatic index (GSI) and histological analyses of gonadal development. A total of 290 specimens (240 females and 50 males) were collected monthly from 5 sites—Ahlat, Kyauk Tan, Daye, Nyaung Pin Seik and Tarana—between January and December 2024.
Thet Htwe Aung
wiley   +1 more source

Studying of Trachurus trachurus (Linnaeus, 1758) Population Reproductive Dynamics in the Eastern Moroccan Mediterranean

Ecology and Evolution, Volume 16, Issue 6, June 2026.
Horse mackerel (Trachurus trachurus) populations along the eastern Moroccan Mediterranean coast were studied over 12 months using 390 specimens to assess reproductive ecology. The species showed two spawning periods—late winter to early spring and summer—and exhibited fractional spawning, with males being more predominant.
Hanae Nasri, Khaoula Kasmi, Douaa Slimani, Souad Abdellaoui, Reda Melhaoui, Belkheir Hammouti, Shehdeh Jodeh, Khalid Chaabane, Raed Alkowni   +8 more
wiley   +1 more source

Revisiting Maturity Data: Using Oocyte Diameter and Gonadosomatic Index to Retroactively Apply a New Maturity Scale to Greenland Halibut (Reinhardtius hippoglossoides)

Fisheries Management and Ecology, Volume 33, Issue 3, Page 601-611, June 2026.
ABSTRACT Greenland halibut (Reinhardtius hippoglossoides) is a deep‐water flatfish which lives at temperatures of 1°C–4°C and produces large eggs (> 3 mm). The combination of low temperatures and large eggs has resulted in an unusual ovary development cycle, with vitellogenesis taking more than 1 year.
James Kennedy, Ásgeir Gunnarsson, Svanhildur Egilsdóttir, Bjarki Þór Elvarsson   +3 more
wiley   +1 more source