scholarly journals ANALISIS KERAGAMAN BENTUK TUBUH IKAN NILA STRAIN GIFT PADA TIGA TINGKATAN UMUR YANG BERBEDA

2002 ◽  
Vol 4 (1) ◽  
pp. 19
Author(s):  
D. Ariyanto
Keyword(s):  
Multivariate Analysis ◽  
Analysis Of Variance ◽  
Oreochromis Niloticus ◽  
Genetic Improvement ◽  
Nile Tilapia ◽  
Body Shape ◽  
The Body ◽  
Analysis Method ◽  
Standard Measurement ◽  
Nile Tilapia Oreochromis Niloticus

A study aimed to identify morphology variability of nile tilapia (Oreochromis niloticus) strain GIFT (Genetic Improvement of Farmed Tilapia) by using standard measurement and multivariate analysis method was conducted. Elevan characters were measured at 141 fishes representing 3 levels of age (0-3 month, 3-6 month and more than 6 month) of nile tilapia strain GIFT. Multivariate analysis of variance (manova) and Pricipal Component Analysis (PCA) were applied to explore the morphological variability.The result showed that body shape of fry (0-3 month of age) was different from fishes with 3-6 month of age (consumption size), also from the broodstock. At the early level of age, development of the body shape was growth in width and length. At the consumption size and broodstock levels, the development of body shape was growth in fat too. 

scholarly journals Trichodina magna Van As and Basson, 1989 (Ciliophora: Peritrichia) from cultured Nile tilapia in the state of Santa Catarina, Brazil

2008 ◽  
Vol 68 (1) ◽  
pp. 169-172 ◽  
Author(s):  
ML. Martins ◽  
L. Ghiraldelli
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Original Description ◽  
The State ◽  
The Body ◽  
Fish Ponds ◽  
Santa Catarina ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Mean Diameter ◽  
The Mean

Specimens of Trichodina magna Van As and Bassson, 1989 (Ciliophora: Peritrichia) from the Nile tilapia Oreochromis niloticus collected from October 2004 to June 2005 in fish ponds situated in three regions of Santa Catarina State, Brazil are described here. Wet smears of skin and gills were prepared in the field, air dried, impregnated with Klein’s dry silver method and Giemsa’s solution. From a total of 146 examined fish, 36 were parasitized on the skin, 14 in the gills and 33 on the skin and gills, simultaneously. The mean diameter of the body of the specimens of T. magna was 84.3 ± 12.6 µm, adhesive disc 60.7 ± 10.0 µm, denticulate ring, 38.3 ± 7.4 µm, consisting of 26 (23 to 29) denticles. The only distinguishable difference from the original description was the fact that the ray of the denticle is anteriorly directed and does not extend over the y + 1 axis.

scholarly journals Correlated changes in body shape after five generations of selection to improve growth rate in a breeding program for Nile tilapia Oreochromis niloticus in Brazil

2016 ◽  
Vol 57 (4) ◽  
pp. 487-493 ◽  
Author(s):  
Carlos Antonio Lopes de Oliveira ◽  
Ricardo Pereira Ribeiro ◽  
Grazyella Massako Yoshida ◽  
Natali Miwa Kunita ◽  
Gabriel Soriani Rizzato ◽  
...  
Keyword(s):  
Growth Rate ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Body Shape ◽  
Breeding Program ◽  
Nile Tilapia Oreochromis Niloticus

Can sexual dimorphism and body shape be altered in Nile tilapia (Oreochromis niloticus) by genetic means?

Aquaculture ◽  
2007 ◽  
Vol 272 ◽  
pp. S38-S46 ◽  
Author(s):  
Nguyen Hong Nguyen ◽  
Hooi Ling Khaw ◽  
Raul W. Ponzoni ◽  
Azhar Hamzah ◽  
Norhidayat Kamaruzzaman
Keyword(s):  
Sexual Dimorphism ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Body Shape ◽  
Nile Tilapia Oreochromis Niloticus

Genetic improvement of farmed tilapias: estimation of genetic variation and heritability for age and size at first spawning in Nile tilapia (Oreochromis niloticus)

Aquaculture ◽  
1995 ◽  
Vol 137 (1-4) ◽  
pp. 279-280 ◽  
Author(s):  
Ambekar E. Eknath ◽  
Ruben A. Reyes ◽  
Hernando L. Bolivar ◽  
Marietta P. De Vera ◽  
Jodecel C. Danting ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Oreochromis Niloticus ◽  
Genetic Improvement ◽  
Nile Tilapia ◽  
Nile Tilapia Oreochromis Niloticus

Genetic improvement of Nile tilapia (Oreochromis niloticus) with special reference to the work conducted by the WorldFish Center with the GIFT strain

2011 ◽  
Vol 3 (1) ◽  
pp. 27-41 ◽  
Author(s):  
Raul W. Ponzoni ◽  
Nguyen Hong Nguyen ◽  
Hooi Ling Khaw ◽  
Azhar Hamzah ◽  
Khairul Rizal Abu Bakar ◽  
...  
Keyword(s):  
Special Reference ◽  
Oreochromis Niloticus ◽  
Genetic Improvement ◽  
Nile Tilapia ◽  
Nile Tilapia Oreochromis Niloticus ◽  
The Gift

scholarly journals First report of Trichodinella and new geographical records of trichodinids in Nile tilapia (Oreochromis niloticus) farmed in Brazil

2019 ◽  
Vol 28 (2) ◽  
pp. 229-237
Author(s):  
Fabrício Sado Rodrigues ◽  
Inácio Mateus Assane ◽  
Gustavo Moraes Ramos Valladão ◽  
Fernanda Gomes de Paula ◽  
Caniggia Lacerda Andrade ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
First Record ◽  
The Body ◽  
Western Region ◽  
Morphometric Characteristics ◽  
Fish Farms ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Protozoa Ciliophora ◽  
Serious Disease

Abstract Massive occurrence of trichodinids is frequently accompanied by serious disease in fish farms. In this study, trichodinid species from the gills and skin of Nile tilapia (Oreochromis niloticus) farmed in the central-western region of Brazil (state of Goiás) were morphologically characterized. Dried slides were prepared from the parasites and were impregnated with silver nitrate (2%). Morphometric characteristics were determined and schematic drawings of the denticles were made using photomicrographs produced from the slides. Seven species of trichodinid ectoparasites (Protozoa: Ciliophora: Trichodinidae) were found parasitizing the gills: four of the genus Trichodina Ehrenberg, 1838; one of Tripartiella Lom, 1959; one of Paratrichodina Lom, 1963; and one of Trichodinella Ṧrámek-Huṧek, 1953. On the body surface, three specimens of the genus Trichodina were identified. This study presents new geographical records of trichodinids in Brazil, thus confirming that Trichodina centrostrigeata, Trichodina compacta, Trichodina heterodentata, Paratrichodina africana and Tripartiella orthodens are widely distributed worldwide. Additionally, the first record of the genus Trichodinella in Brazil is presented.

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