Results 111 to 120 of about 441 (139)
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Arabian Journal for Science and Engineering, 2021
The main objective of this study was to describe the reproductive cycle of the sea urchin Paracentrotus lividus (Lamarck, 1816) on the south Atlantic coast of Morocco. In this study, we selected three sites in the Agadir region: Sidi R’bat, Cap Ghir, and Anza to study from March 2018 to February 2019 some aspects of reproduction in this species through
Hanan Ouchene +5 more
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The main objective of this study was to describe the reproductive cycle of the sea urchin Paracentrotus lividus (Lamarck, 1816) on the south Atlantic coast of Morocco. In this study, we selected three sites in the Agadir region: Sidi R’bat, Cap Ghir, and Anza to study from March 2018 to February 2019 some aspects of reproduction in this species through
Hanan Ouchene +5 more
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Aquaculture International, 1999
Six-week-old Nile tilapia (Oreochromis niloticus) fry with an average weight (SD) of 0.51(0.2) g were reared for 140 days on five formulated, isocaloric diets of different protein levels (25, 30, 40 and 45% by dry weight). Fish fed diets of higher protein levels (40 and 45%) showed better growth and feed conversion ratio than those on lower protein ...
Y.S. Al Hafedh +2 more
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Six-week-old Nile tilapia (Oreochromis niloticus) fry with an average weight (SD) of 0.51(0.2) g were reared for 140 days on five formulated, isocaloric diets of different protein levels (25, 30, 40 and 45% by dry weight). Fish fed diets of higher protein levels (40 and 45%) showed better growth and feed conversion ratio than those on lower protein ...
Y.S. Al Hafedh +2 more
openaire +1 more source
Theriogenology, 2012
In the present study, sexual gonadal differentiation and first sexual maturation of Meagre (Argyrosomus regius) was studied, based upon the annual changes in gonadosomatic index (GSI), gonadal histology, and the plasma steroid hormones, testosterone (T), 11-ketotestosterone (11-KT), and estradiol (E2).
SCHIAVONE, Roberta +3 more
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In the present study, sexual gonadal differentiation and first sexual maturation of Meagre (Argyrosomus regius) was studied, based upon the annual changes in gonadosomatic index (GSI), gonadal histology, and the plasma steroid hormones, testosterone (T), 11-ketotestosterone (11-KT), and estradiol (E2).
SCHIAVONE, Roberta +3 more
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Invertebrate Reproduction & Development, 1996
Summary Concurrent morphological, anatomical and physiological changes took place during the first reproductive cycle in the Australian red-claw crayfish Cherax quadricarinatus, which prepared the female for spawning and holding of the newly deposited eggs.
AMIR SAGI +3 more
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Summary Concurrent morphological, anatomical and physiological changes took place during the first reproductive cycle in the Australian red-claw crayfish Cherax quadricarinatus, which prepared the female for spawning and holding of the newly deposited eggs.
AMIR SAGI +3 more
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Aquaculture International, 2008
The objective of this study was to investigate the effects of five isonitrogenous (35% crude protein) diets having different energy contents; 10.85, 11.82, 12.73, 13.69, and 15.06 MJ DE/kg, respectively, on the gonad development and weight gain of Sharptooth catfish fingerlings.
ÇEK, Şehriban, YILMAZ, Erdal
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The objective of this study was to investigate the effects of five isonitrogenous (35% crude protein) diets having different energy contents; 10.85, 11.82, 12.73, 13.69, and 15.06 MJ DE/kg, respectively, on the gonad development and weight gain of Sharptooth catfish fingerlings.
ÇEK, Şehriban, YILMAZ, Erdal
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Aquaculture, 2006
Abstract Gonadal development of female crayfish Cherax quadricarinatus at first maturation (25.5 ± 3.8 g) was investigated using morphological criteria (Gonadosomatic and Hepatosomatic Indices or GSI and HSI), biochemical composition (proteins, lipids, and carbohydrates) of the gonad and hepatopancreas, histological indicators (oocyte diameter ...
Hervey Rodríguez-González +5 more
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Abstract Gonadal development of female crayfish Cherax quadricarinatus at first maturation (25.5 ± 3.8 g) was investigated using morphological criteria (Gonadosomatic and Hepatosomatic Indices or GSI and HSI), biochemical composition (proteins, lipids, and carbohydrates) of the gonad and hepatopancreas, histological indicators (oocyte diameter ...
Hervey Rodríguez-González +5 more
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Aquaculture, 2005
Age at maturity and dynamics of gonadal cycle vary among individuals in a standard population; the extent of that variability in a group of siblings is not known for any species. Therefore, the aim of the study was to find out how the differentiation of gonad development varies in a group of sibling fish.
Katarzyna Dziewulska, Józef Domagaƚa
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Age at maturity and dynamics of gonadal cycle vary among individuals in a standard population; the extent of that variability in a group of siblings is not known for any species. Therefore, the aim of the study was to find out how the differentiation of gonad development varies in a group of sibling fish.
Katarzyna Dziewulska, Józef Domagaƚa
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Journal of Shellfish Research, 2010
ABSTRACT This study analyzed the effect of water quality, different diets, and water temperature regimes in the conditioning and maturation of the Pacific oyster Crassostrea gigas. A recirculating aquaculture system prototype was used in this experiment and 2 different trials were performed.
Roger Frias, Manuel Segovia
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ABSTRACT This study analyzed the effect of water quality, different diets, and water temperature regimes in the conditioning and maturation of the Pacific oyster Crassostrea gigas. A recirculating aquaculture system prototype was used in this experiment and 2 different trials were performed.
Roger Frias, Manuel Segovia
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