Study on Length weight relationship and feeding biology of Glossogobius giuris (Hamilton-Buchanan, 1822) in Dibrugarh district, Assam

2020 ◽  
Vol 14 (9) ◽  
2014 ◽  
Vol 2 (2) ◽  
pp. 141 ◽  
Author(s):  
Animesh Roy ◽  
Md. Shakhawate Hossain ◽  
Mohammad Lutfar Rahman ◽  
Mohammad Abdus Salam ◽  
Mir Mohammad Ali

Glossogobius giuris were collected during March to September 2013 from the Payra river to estimate the length-weight relationship with relative condition factor (Kn), fecundity, gonadosomatic index (GSI) and relation between fecundity and other parameters. The length-weight relationship was found to be Log W= 2.667 Log TL – 1.805 in male and Log W = 2.931 Log TL – 2.040 in female. The mean Kn were found to be 1.02±0.155 for male and 0.97±0.276 for female which indicates satisfactory condition of the fish population. The mean relative fecundity was ranged from 88495 to 264104 with a mean value of 171581±17855, having a average total length of 21.21±0.44 cm, body weight 70.22±4.62 g and gonad weight 2.74±0.31 g. The relationships among the fecundity, the total length, body weight, gonad weight were found to be linear and positively correlated. The mean GSI value was 3.42±0.33 and the highest GSI value was recorded 9.34±0.71 in the month of September. This study will help to introduce this species in sustainable aquaculture through proper management and for the development of induced breeding technique.


2017 ◽  
Vol 3 (5) ◽  
pp. 329
Author(s):  
Astri Suryandari ◽  
Krismono Krismono

Ikan manggabai (Glossogobius giuris) merupakan salah satu ikan Danau Limboto yang bernilai ekonomis penting dan sudah mengalami tingkat eksploitasi yang tinggi. Untuk pengelolaan populasi ikan secara berkelanjutan diperlukan banyak data yang antara lain mencakup aspek biologi jenis yang bersangkutan. Studi mengenai beberapa aspek biologi ikanmanggabai di Danau Limboto telah dilakukan pada bulan Pebruari sampai Oktober 2008. Contoh ikan dikumpulkan dengan menggunakan jaring insang (gill net) dengan ukuran mata jaring 2,5 dan 3 inci, bunggo (trap) dan dudayahu (push net). Hasil penelitian ini menunjukkan bahwa ikanmanggabai merupakan ikan piscivora dengan makanan utama berupa ikan payangka (Ophiocara porocephala) dan tawes (Barbonimus gonionotus). Pola pertumbuhan ikan manggabai adalah alometrik (W = 0,013 L2,7053) dengan fekunditas berkisar antara 18.578-335.034 butir serta diameter telurnya 0,33-0,83 mm dan indeks kematangan gonad 2,32-8,65%. Study of some biological aspects of Glossogobius giuris was conducted in Lake Limboto from February until October 2008. Samples were collected using gillnet of 2.5 dan 3.0 inches mesh size, trap and push net. Based on its food habit, Glossogobius giuris is classified as carnivore that feed on fish. The length and weight relationship was W= 0.013 L2,7053 and growth type was isometric. The fecundity of this fish was 18.578-335.034 eggs with diameter of 0.33-0.83 mm and gonado somatic index of 2.32-8.65%.


2016 ◽  
Vol 42 (1) ◽  
pp. 95-106
Author(s):  
Bimal Kanta Saha ◽  
Md Fuad Hassan ◽  
Aparna Saha

The investigation was conducted on some aspects of biology viz. morphometrics, meristics, length-weight relationship and coefficient of condition of the Bar-eyed goby Glossogobius giuris. The mean of total length (TL) (94.42 ± 18.52 mm), standard length (SL) (73.13 ± 3.45mm), pre-dorsal length (PDL) (28.8 ± 7.32mm), head length (HL) (23.9 ± 4.87mm), snout length (SnL) (8.15 ± 1.9 mm) and height of body (HB) (14.17 ± 3.29mm) were determined.The relationships between the total length and other body parameters were found to be positively correlated and highly significant. The fin formula is D1.6; D2.1/9-10; P1.17-21; P2.1/5; A.1/9; C.17. The length-weight relationships of combined sex of G. giuris were determined as Log TW = -4.802 + 2.857 Log TL. The coefficient of conditions from the ko of combined sex and from the kc of combined sex was determined as 0.834 ± 0.132 and 0.827 ± 0.027, respectively. Kn values of combined sex were found to be 1.001 ± 0.156.J. Asiat. Soc. Bangladesh, Sci. 42(1): 95-106, June 2016


2019 ◽  
Vol 24 (1) ◽  
pp. 15 ◽  
Author(s):  
I Nyoman Giri Putra ◽  
I Dewa Nyoman Nurweda Putra

The demands of marine organisms for the aquarium trade are remain high and seems continue to increase. Consequently, many of marine organisms has been spread out from its natural habitat as in the case of endemic Banggai cardinalfish, (Pterapogon kauderni). That has invaded “new” habitat since it being trade in 1995. In recent years, a small populations of P. kauderni is known to be exist in a narrow bay near the Gilimanuk harbor, Bali. An underwater visual fish census survey was conducted on June 2018 to estimate the habitat types and densities of P. kauderni.  Additionally, 23 specimens of P. kauderni were collected randomly in order to assess biological parameters such as the length-weight relationship. We successfully recorded 30 groups of P. kauderni that inhabit a shallow areas with a depth range between 0.5m to 2m. Of these, more than 90% of the groups were found to be associated with sea urchin (Diadema sp.) while the rest were found to live together with branching coral (Acropora sp.) and branching sponge (Ptylocaulis sp.). Total number of fish observed during the survey were 381 individuals. The fish density is 0.76 individu.m-2. Length-weight relationship showed that P. kauderni exhibit is negative allometry (b<3) which mean that the increase in length is faster than the weight gain. Interestingly, from the 23 specimens collected, none of these were sexually mature (SL<41 mm) which may indicated that the population of P. kauderni in Bali are under serious threats of exploitation.     


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