Results 121 to 130 of about 289,293 (264)

Maturation, Spawning Period, and Fecundity of the White Crappie, Pomoxis annularis Rafinesque, in Beaver Reservoir, Arkansas [PDF]

open access: yes, 1981
Gonosomatic indices and ovum diameter frequency distributions showed that the Beaver Reservoir white crappie spawns from late April through May. During the spawning season females release eggs more than once.
Kilambi, Raj V., Thomas, Janet L.
core   +2 more sources

Choosing the observational likelihood in state-space stock assessment models

open access: yes, 2016
Data used in stock assessment models result from combinations of biological, ecological, fishery, and sampling processes. Since different types of errors propagate through these processes it can be difficult to identify a particular family of ...
Albertsen, Christoffer Moesgaard   +2 more
core   +1 more source

Spawning and hatching performance of the silvery black porgy Sparidentex hasta under hypersaline conditions [PDF]

open access: yes
Abu Al Abyad island is characterized by harsh environmental conditions. A preliminary trial conducted at the island to investigate the spawning and hatching performance of the blue finned sea bream Sparidentex hasta indicated that the fish can be ...
Ali, A.A., Kumar, K.K., Yousif, O.M.
core  

Estimates of body sizes at maturation and at sex change, and the spawning seasonality and sex ratio of the endemic Hawaiian grouper (Hyporthodus quernus, F. Epinephelidae) [PDF]

open access: yes, 2011
A case study of the reproductive biology of the endemic Hawaiian grouper or hapu’upu’u (Hyporthodus quernus) is presented as a model for comprehensive future studies of economically important epinephelid groupers.
DeMartini, Edward E.   +2 more
core  

Summary document of the work being done in 1992-1993 regarding the migratory salmonid fisheries of the River Ribble catchment [PDF]

open access: yes, 1994
This document lists the work on salmonid fisheries in the River Ribble catchment in the north west of England which was done in 1992-93. The document includes the following: analysis of historical catch data from the River Ribble covering 1937-1991 ...

core  

Stock assessment of protogynous fish: evaluating measures of spawning biomass used to estimate biological reference points [PDF]

open access: yes, 2008
In stock assessments, recruitment is typically modeled as a function of females only. For protogynous stocks, however, disproportionate fishing on males increases the possibility of reduced fertilization rates.
Brooks, Elizabeth N.   +3 more
core   +1 more source

Spawning Behavior and Selection of Spawning Substrate.

open access: yesNIPPON SUISAN GAKKAISHI, 1997
Takayasu Fujita   +3 more
openaire   +2 more sources

Hydroacoustic evaluation of spawning red hind (Epinephelus guttatus) aggregations along the coast of Puerto Rico in 2002 and 2003 [PDF]

open access: yes, 2006
Red hind (Epinephelus guttatus) have been overfished in the Caribbean and were included with seven other regional grouper species deemed vulnerable to risk of extinction.
Johnston, Samuel V.   +5 more
core  

Discovery of a spawning ground reveals diverse migration strategies in Atlantic bluefin tuna (Thunnus thynnus)

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2016
David E. Richardson   +9 more
semanticscholar   +1 more source

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