Dwivedi amitabh chandra (66 risultati)

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Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Mayank PriyankaDr. Priyanka Mayank mainly involved in the field of fish biology, biodiversity, population dynamic and heavy metal accumulation in fishes. she has published 23 research paper/article in scientific journal of repute, sp.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Pathak Ravindra KumarDr. Ravindra Kumar Pathak mainly worked in the field of fish age, growth, population, reproduction, biodiversity, and studies on ecology changes and their impact on fisheries. He has published 16 research paper/a.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Present investigation was aimed to understand the biodiversity, landing scenario, age and growth, sex ratio, population structure and population dynamics of commercially important fishes Cirrhinus mrigala and Oreochromis niloticus. The fish samples were collected on regular basis during the period August 2011 to July 2012 from the lower stretch of the Yamuna river at Allahabad, India. Fish biodiversity of the Yamuna river at Allahabad consisted of 85 fish species belong to 8 orders, 28 families and 63 genera. Cypriniformes and Cyprinidae were the most rich species order and family. Data on fish landings showed that the O. niloticus and C. carpio have invaded in the lower stretch in a big way in the Yamuna river at Allahabad. The estimated annual catch was dominated by O. niloticus (147.81kg d-1) followed by C. carpio (132.04 kg d-1) and miscellaneous group (92.34 kg d-1) and they accounted for 24.36%, 21.76% and 15.22% in total, respectively. On the basis of samples of C. mrigala in the length range from 16.8 to 94.3 cm showed that the fish attained mean length of 30.24 cm in 1+, 47.82 cm in 2+, 60.13 cm in 3+, 70.11 cm in 4+, 77.01 cm in 5+, 81.42 cm in 6+, 86.30 cm in 7+, 89.80.…

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - La presente investigación tenía como objetivo comprender la biodiversidad, el escenario de desembarque, la edad y el crecimiento, la proporción de sexos, la estructura de la población y la dinámica poblacional de dos especies de peces de importancia comercial: Cirrhinus mrigala y Oreochromis niloticus. Las muestras de peces se recogieron de forma regular durante el periodo comprendido entre agosto de 2011 y julio de 2012 en el tramo inferior del río Yamuna, en Allahabad (India). La biodiversidad piscícola del río Yamuna en Allahabad estaba compuesta por 85 especies de peces pertenecientes a 8 órdenes, 28 familias y 63 géneros. Cypriniformes y Cyprinidae fueron el orden y la familia con mayor riqueza de especies. Los datos sobre los desembarques de pescado mostraron que O. niloticus y C. carpio han invadido de forma masiva el tramo inferior del río Yamuna en Allahabad. La captura anual estimada estuvo dominada por O. niloticus (147,81 kg d-1), seguido de C. carpio (132,04 kg d-1) y un grupo diverso (92,34 kg d-1), que representaron el 24,36 %, el 21,76 % y el 15,22 % del total, respectivamente. A partir de muestras de C. mrigala con una longitud comprendida entre 16,8 y 94,3 cm, se observó que los peces alcanzaban una longitud media de 30,24 cm en 1+, 47,82 cm en 2+, 60,13 cm en 3+, 70,11 cm en 4+, 77,01 cm en 5+, 81,42 cm en 6+, 86,30 cm en 7+, 89,80.…

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - La présente étude visait à comprendre la biodiversité, le scénario de débarquement, l'âge et la croissance, le rapport des sexes, la structure et la dynamique des populations de poissons commercialement importants, Cirrhinus mrigala et Oreochromis niloticus. Les échantillons de poissons ont été prélevés régulièrement entre août 2011 et juillet 2012 dans la partie inférieure du fleuve Yamuna à Allahabad, en Inde. La biodiversité piscicole de la Yamuna à Allahabad comprenait 85 espèces de poissons appartenant à 8 ordres, 28 familles et 63 genres. Les Cypriniformes et les Cyprinidae étaient les ordres et les familles les plus riches en espèces. Les données sur les débarquements de poissons ont montré que l'O. niloticus et le C. carpio ont envahi en grand nombre le cours inférieur de la Yamuna à Allahabad. Les captures annuelles estimées étaient dominées par O. niloticus (147,81 kg d-1), suivi de C. carpio (132,04 kg d-1) et d'un groupe divers (92,34 kg d-1), qui représentaient respectivement 24,36 %, 21,76 % et 15,22 % du total. Sur la base d'échantillons de C. mrigala dont la longueur variait de 16,8 à 94,3 cm, il a été démontré que les poissons atteignaient une longueur moyenne de 30,24 cm dans la catégorie 1+, 47,82 cm dans la catégorie 2+, 60,13 cm dans la catégorie 3+, 70,11 cm dans la catégorie 4+, 77,01 cm dans la catégorie 5+, 81,42 cm en 6+, 86,30 cm en 7+, 89,80.…

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Condizione: New. Print on Demand.

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Condizione: New. PRINT ON DEMAND.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.