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Length-weight relationship of Isoparorchis hypselobagri [Billet, 1898] [Trematoda, Isoparorochiidae]

100%

Rahaman A. , Manna B.

nr 1

The length-weight relationship of lsoparorchis hypselobagri was calculated from a total sample of 562 specimens from three size groups - smaller (11-19), intermediate (20-31) and larger (32-48 mm). The equation for the relationship was calculated as log W = 1.9273 log L = 0.1346 or W = 0.7335 L¹'⁹²⁷³ (r = 0.9973; P < 0.001). Variation in the regression coefficient (b) from different length groups reflected variation in the physiological conditions of the flukes.

Length Weight Relationship and Condition Factor of Indo-Pacific King Mackerel (Scomberomorus guttatus) in Pangandaran Water, West Java, Indonesia

88%

Tarigan A. L. , Hamdani H. , Yustiati A. , Dewanti L. P.

tom 24

199-208

Scomberomorus guttatus is an economical valuable fish in Pangandaran, West Java, Indonesia. Indeed, the catch of large pelagic fish in Pangandaran water is dominated by Scomberomorus guttatus at around 42.30% of the total production of large pelagic fish in 2015-2017. The purpose of this research is to analyze length-weight relationship and condition factors of Scomberomorus guttatus. The samples were collected in August and September 2018 at Cikidang Fishing Port, Pangandaran Regency, West Java. The Scomberomorus guttatus observed during the research had total length ranging from 205 to 685 mmTL, and the length-weight relationship of Scomberomorus guttatus in Pangandaran water was indicated by the equation W=〖0,0000038L〗^3.0839. Furthermore, the growth pattern of Scomberomorus guttatus is positive allometric (b = 3.0839), meaning that weight growth is faster than length growth, while its condition factor range from 0.52 to 1.54 (average - 1.00 ±0.08).

Biometry and reproductive biology of Pseudonereis anomala Gravier 1901 (Polychaeta: Nereididae) on the Alexandria coast, Egypt

63%

Hamdy R. , Dorgham M. M. , El-Rashidy H. H. , Atta M. M.

tom 56

nr 1

Scale structure, age, and growth of Labeo calbasu [Hamilton, 1822] from Northern India

63%

Johal M. S. , Tandon K. K. , Kaur S.

tom 38

nr 1-2

The cycloid scales reveal the presence of a distinct larval mark under the scanning electron microscope. A linear relationship between total fish length and lateral scale radius was observed. The exponent of the length-weight relationship was 2.519 and 3.094, the harvestable size 29.7 and 26.0 cm (total length), and the ultimate size based on Walford’s graph 76.0 and 64.5 cm in Gobindsagar Reservoir (Himachal Pradesh), and Harike Wetland (Punjab) respectively.

Cykloidalne łuski wykazywały pod mikroskopem skanningowym wyraźne pierścienie narybkowe. Stwierdzono zależność liniową między długością całkowitą i bocznym promieniem łuski. W populacjach ze Zbiornika Gobindsagar (Himachal Pradesh) i bagien Harike (Punjab) wykładnik w równaniu zależności ciężaru od długości wynosił 2.519 i 3.094, wymiar ochronny 29.7 i 26.0 cm (długość całkowita), a teoretyczna długość maksymalna odczytana z wykresu Walforda 76.0 i 64.5 cm.

Biometric characters and growth of Greenland halibut Reinhardtius hippoglossoides [Walbaum, 1792] from the Barents Sea

51%

Krzykawski S.

nr 1