Results 111 to 120 of about 19,805 (300)

Spawning grounds model for neotropical potamodromous fishes: conservation and management implications

Frontiers in Environmental Science
IntroductionFreshwater fish migrations are an important natural process. All main river basins in South America have potamodromous fish that migrate upstream to spawn.
Silvia López-Casas, Carlos A. Rogéliz-Prada, Victor Atencio-García, Cintia Moreno-Árias, Diana Arenas, Kelly Rivera-Coley, Luz Jimenez-Segura   +6 more
doaj   +1 more source

Non‐Physical Barrier Design and Environmental Conditions Alter Routing and Survival of Juvenile Chinook Salmon (Oncorhynchus tshawytscha) in the Sacramento‐San Joaquin River Delta

River Research and Applications, EarlyView.
ABSTRACT Pacific salmon face substantial challenges when migrating through anthropogenically modified river systems, such as the Sacramento‐San Joaquin River Delta (the Delta). Non‐physical behavioral barriers, such as the bioacoustic fish fence (BAFF), are one potential solution for guiding fish away from hazards without obstructing water flow ...
Maggie Raboin, Summer M. Burdick, Russell W. Perry   +2 more
wiley   +1 more source

Artificial propagation of milkfish: Present status and problems

, 1984
Milkfish (Chanos chanos ) has been extensively cultured in Indonesia, Taiwan, and the Philippines. At present, the only source of fry for fish farmers is the coastal waters during the spawning season.
Lam, T. J.
core   +1 more source

Comparison of Spawning and Non-Spawning Substrates in Nests of Species of Exoglossum and Nocomis (Actinopterygii: Cyprinidae)

, 2001
Percent composition of pebble size classes from spawning and non-spawning substrates of nests were used to test the hypothesis that distribution of pebble sizes is random in nests of Exoglossum laurae, Exoglossum maxillingua, Nocomis leptocephalus ...
Green, Terre D., Maurakis, Eugene G.
core   +2 more sources

Search and Passage Are Decoupled for Migrating Trout Kelts at Multi‐Exit Dam

River Research and Applications, EarlyView.
ABSTRACT Longitudinal and lateral river connectivity have been drastically reduced over time, with hydropower development as a major driver of fragmentation. While fishways are widely implemented to support upstream migration, downstream passage remains a major challenge.
Halvor Kjærås, Jon Museth, Finn Økland, Karl Øystein Gjelland, Henrik Baktoft, Torbjørn Forseth   +5 more
wiley   +1 more source

A Study Of The Largemouth Bass Spawning Conditions, Behavior, And Locations Of Spawning Areas At Spring Meadow Lake

, 1986
For two months lasting from the middle of May till mid-July of 1985, a set of early, middle, and late observations were made upon the spawning of largemouth bass (Micropterus sal mo ides) at Spring Meadow Lake.
Roos, Paul
core   +1 more source

Evidence of increased hydrodynamic retention in the spawning grounds of large pelagic fishes in the western Mediterranean

Frontiers in Marine Science
Hydrography shapes the reproductive and early life ecology of migratory large pelagics such as Atlantic bluefin tuna. While their spawning grounds have traditionally been linked to areas with suitable temperature, low productivity, and moderate surface ...
Andrea Casaucao, Andrea Casaucao, Baptiste Mourre, Baptiste Mourre, Maria Pilar Tugores, Rosa Balbín, Lara Díaz-Barroso, Ismael Hernández-Carrasco, Ismael Hernández-Carrasco, Patricia Reglero, Diego Alvarez-Berastegui   +10 more
doaj   +1 more source

Life cycle of the pelagic goby Aphia minuta (Pisces: Gobiidae)

Scientia Marina, 2001
Reproductive aspects of the transparent goby Aphia minuta (n=2977, 14-45 mm total length (TL)) were studied in Majorcan waters, western Mediterranean, during the fishing season (December to April) from 1985 to 1993. Male:female sex ratio was 1:1. Size at
M. Iglesias, B. Morales-Nin
doaj   +1 more source

Restoring Lateral Connectivity to Anthropogenic Riverscapes: Six Lessons From Stage Zero

River Research and Applications, EarlyView.
ABSTRACT Centuries of river modification, particularly straightening and incision, have severely reduced lateral connectivity between rivers and their floodplains. As a result, Stage 0 riverscapes, characterised by high lateral connectivity (e.g., anastomosing or wetland riverscapes), are now rare in anthropogenic landscapes.
Richard J. Mason, Matthew F. Johnson, Ben Eardley, Matthew J. Hemsworth, Arnaud Foret, Luca Mao, Matt Parr, Alan Puttock, Richard E. Brazier   +8 more
wiley   +1 more source

Latitudinal and temporal comparisons of the reproductive biology and growth of snapper, Pagrus auratus (Sparidae), in Western Australia

, 2006
This study focused on obtaining sound quantitative data on the reproductive biology, length and age compositions and growth of the snapper Pagrus auratus in the waters off Carnarvon at ca 25oS and Perth at ca 32oS on the west coast of Australia and at ca
Wakefield, Corey Brion
core   +1 more source