Results 51 to 60 of about 10,216 (225)

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

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

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

The evolution of gonad expenditure and gonadosomatic index (GSI) in male and female broadcast‐spawning invertebrates

Biological Reviews, 2017
ABSTRACTSedentary broadcast‐spawning marine invertebrates, which release both eggs and sperm into the water for fertilization, are of special interest for sexual selection studies. They provide unique insight into the early stages of the evolutionary succession leading to the often‐intense operation of both pre‐ and post‐mating sexual selection in ...
Parker, Geoff A., Ramm, Steven A., Lehtonen, Jussi, Henshaw, Jonathan M.   +3 more
openaire   +4 more sources

Proteomic analysis of the zone of degeneration at the mitosis–meiosis transition stage in wild‐caught male catshark (Scyliorhinus canicula), correlated with an unusually high‐water temperature in the English Channel

Journal of Fish Biology, EarlyView.
Abstract In the context of current global change, variations in water temperature are one of the environmental conditions with serious consequences for marine life, including reproductive processes. In the small spotted catshark Scyliorhinus canicula, spermatogenesis occurs in spermatocysts composed of synchronously developing germ cells associated ...
Fabian Jeanne, Stanislas Pilet, Sean Heighton, Benoît Bernay, Pascal Sourdaine   +4 more
wiley   +1 more source

Correlation Between Testicular Biometrics and Serum Level of Reproductive Hormones of Crossed Arewa Breed of Stallions in Ilorin, Nigeria

Media Kedokteran Hewan, 2022
The hypothalamic-pituitary-gonadal axis (HPG) controls the reproductive physiology activities of stallions. The organs involved in this axis are the hypothalamus, the pituitary, and the gonads (testes), and the endocrine secretions from these organs ...
Afisu Basiru, Ishola Olaide Abdullahi, Adah Sylvanus Adakole, Akorede Ganiu Jimoh, Aremu Abdulfatai, Azeez Oyebisi Mistura   +5 more
doaj   +1 more source

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 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

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

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