Results 11 to 20 of about 10,315 (217)

Gonadosomatic index (GSI) of female whitefish (Coregonus lavaretus) in Lake Constance

open access: yesLimnologica, 2000
AbstractFrom 1991 to 1997 the gonadosomatic index (GSI) of pelagic spawning female whitefish (Coregonus lavaretus, local name “Blaufelchen”) in Lake Constance-Obersee was determined. Average GSI increased from low values in summer to a maximum of about 24% immediately before spawning (end of November/beginning of December). The coefficient of variation
openaire   +3 more sources

Body Condition and Reproductive Investment of Mature Male Argentinean Shortfin Squid Illex argentinus

open access: yesProgress in Fishery Sciences, 2023
The Argentinean shortfin squid, Illex argentinus, is an oceanic cephalopod displaying characteristics of short lifespan, fast growth rate, and semelparous reproduction.
Wei LIU   +3 more
doaj   +1 more source

Induction of oocyte developer hormones (oodev) on the maturity of Poropuntius tawarensis [PDF]

open access: yesE3S Web of Conferences, 2022
Poropuntius tawarensis is an endemic fish belonging to the Cyprinidae family found in Laut Tawar Lake, Central Aceh, Indonesia. P. tawarensis has a limited distribution and the fertilization only occurs in the rainy season.
Mellisa Siska   +2 more
doaj   +1 more source

Reproductive performance of laying snails (Archachatina marginata) fed on roughages and different concentrate mixes

open access: yesBulletin of the National Research Centre, 2020
Background This study aims to investigate the reproduction output of Archachatina marginata fed on roughage and concentrate feed with leaf meal-inclusive diets.
Olatunji Abubakar Jimoh   +1 more
doaj   +1 more source

Seasonal changes of commercial traits, proximate and fatty acid compositions of the scallop Flexopecten glaber from the Mediterranean Sea (Southern Italy) [PDF]

open access: yesPeerJ, 2019
This study provides information on biological (gonadosomatic index), commercial quality (condition index and meat yield) and biochemical aspects (proximate composition, fatty acids) of the soft tissues of Flexopecten glaber reared in suspended cages in ...
Ermelinda Prato   +5 more
doaj   +2 more sources

Comparison of Reproductive Aspects of the Tropical Eel Anguilla bicolor (McClelland 1884) in Freshwater and Estuarine Habitats

open access: yesIlmu Kelautan, 2023
The tropical anguillid eel, Anguilla bicolor McClelland, experiences significant growth up to the adult size in both freshwater and estuarine ecosystems, encountering salinity gradients that may impact their reproduction.
Farida Nur Rachmawati   +2 more
doaj   +1 more source

Inaccuracies in routinely collected Atlantic herring (Clupea harengus) maturity data and correction using a gonadosomatic index model [PDF]

open access: yes, 2012
Peer reviewedPublisher ...
Ganias, Konstantinos   +2 more
core   +1 more source

Effect of Pure and Combine Hormone of Pregnant Mare Serum (PMSG) on Gonadosmatic Index, Hepatosomatic Index of Silver Pompano Fish (Trachinotus blochii)

open access: yesJournal of Aquaculture Science, 2017
The research was title The Effect of Pregnant Mare Serum Gonadotropin (PMSG) Pure and Combinations against Gonadosomatik Index, Hepatosomatic Index Silver Pompano (Trachinotus blochii).
Wiwin Kusuma Atmaja Putra   +1 more
doaj   +1 more source

Studies on reproduction of the mullet Mugil platanus Günther, 1880 (Actinopterygii, Mugilidae) from the Mar Chiquita coastal lagoon, Argentina: Similarities and differences with related species [PDF]

open access: yes, 2011
The aim of the present study is to provide the first results on the reproductive biology of Mugil platanus, from the Mar Chiquita coastal lagoon (Argentina).
Cousseau, María Berta   +2 more
core   +1 more source

Effects of cadmium and zinc on Procambarus clarkii: Simulation of the Aznalcóllar mining spill

open access: yesCiencias Marinas, 2005
Female red swamp crayfish, Procambarus clarkii, were exposed for 21 days in the laboratory to different dissolved concentrations of zinc (1000 µg L–1 and 3000 µg L–1) and cadmium (10 µg L–1 and 30 µg L–1), determined in the Guadiamar River after the ...
ML Martín-Díaz   +4 more
doaj   +1 more source

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