Stomach contents of Plotosus canius (Hamilton, 1822) in the coastal waters of Port Dickson, Peninsular Malaysia

Usman, Baba; Amin, Nurul; Aziz, Azizan; Kamarudin, Mohd Salleh; Hena, Mustafa Kamal Abu

doi:10.22438/jeb/39/5(si)/18

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…During the study period, the percentage of fish with an empty stomach was higher (80%) in the larger size group (>29-34 cm) of fish indicated reduced feeding intensity during the peak spawning period. This phenomenon was also described by Usman et al (2018) in Plotosus canius and Khan et al (2011) in Mysteus nemurus.…”

Section: Discussionsupporting

confidence: 66%

Seasonal analysis of food items and feeding habits of endangered riverine catfish Rita rita (Hamilton, 1822)

et al. 2022

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This investigation presents the food and feeding activity of and endangered riverine catfish Rita rita, during February 2017-January 2018. A total of 225 fish individuals was analyzed for stomach contents by characterizing the dominant food items and morphometric features. The results divulged ten major food items consumed, preferably fish scales and eggs, teleost fishes, copepods, cladocerans, rotifers, and mollusks. Total length and body weight of fish varied between 9-34 cm (20.53 ± 6.90 cm) and 10-400 g (9125.94 ± 102.07 g), respectively. The index of relative importance (IRI%) showed the importance of rotifers over the other food items. Morisita’s index of diet overlap indicated seasonal variations in catfish diets with summer and monsoon displaying the least overlap, while maximum overlap during monsoon and winter seasons. The non-metric multidimensional scaling (nMDS) indicated the close association between the food items available during summer and winter seasons with a significant difference among the seasons (ANOSIM, R = 0.638, P = 0.013). Levin’s niche breadth index arranged in the order of 0.88>0.81>0.78>0.63>0.43 for the size classes of V, IV, III, II and I, respectively. The PCA explained 95.39% of the total variance among the food items and fish size groups. Small-sized fish individuals displayed a greater correlation with food items suitable for their mouth size. In conclusion, the variety and frequency of food items recorded indicated considerable feeding plasticity and opportunistic feeding behavior with a shift from carnivorous to omnivorous feeding nature. This study could render useful information on the food and feeding habits of R. rita and provide background for preparing its diet for future aquaculture practices.

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Section: Discussionsupporting

confidence: 66%

Seasonal analysis of food items and feeding habits of endangered riverine catfish Rita rita (Hamilton, 1822)

et al. 2022

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“…Hasil TKG IV ikan sembilang (Plotosus canius) jantan ditunjukkan oleh ukuran testis yang sudah membesar dan kelompok buli-buli yang semakin besar dan pejal. Tingkat kematangan ini ditemukan (Usman, et al, 2018)…”

Section: Gambar 4 Histologi Gonad Ikan Betina Gambar 5 Histologi Gonad Ikan Jantanunclassified

Tingkat Kematangan Gonad, Gonadosomatik Indeks dan Hepatosomatik Indeks Ikan Sembilang (Plotosus sp.) di Teluk Pulau Bintan

Putra

Yulianto

Miranti

2020

Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan

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Tujuan penelitian ini adalah mengetahui tingkat kematangan gonad, nilai gonadosomatik dan hepatosomatik indeks ikan sembilang di Perairan Teluk Pulau Bintan, Propinsi Kepulauan Riau. Penelitian dilaksanakan pada bulan Juli sampai dengan bulan Agustus tahun 2018. Penelitian ini menggunakan metode survei lapang di teluk pulau Bintan dengan jumlah sampel 30 ekor setiap stasiun (total jumlah ikan sebanyak 120 ekor). Parameter penelitian adalah bobot tubuh, panjang, gonadosomatik indeks, hepatosomatik indeks dan tingkat kematangan gonad. Hasil penelitian tingkat kematangan gonad, gonadosomatik, dan hepatosomatik indeks adalah teluk kampong bugis (TKG I-III, 0.21%, 1.45%), Madong (TKG 0-III, 0,75%, 1.33%), Tembeling (TKG I-III, 0,48%, 1,42%), Dompak (TKG 0-II, 0.18%, 1.08%) dan Pengujan (TKG 0-III, V, 0.38%, 1.35%)

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“…They normally inhabit marine and brackish water (Usman et al, 2013;Samani et al, 2016;Kundu et al, 2019;Yulianto et al, 2020), but have also been found to live further uphill of the freshwater river (Hortle and Phommanivong, 2021). The fish are euryphagic with the main diet consisting of crustaceans, shellfish, muds, other fishes, and water insects (Fatah and Asyari, 2011;Leh et al, 2012;Jumiati et al, 2018;Usman et al, 2018;Makri et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Biological Aspect of the Grey-eel catfish in Kuala Langsa Estuaries, Aceh

Haser¹,

Nurdin²,

Azmi³

et al. 2022

Depik

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The grey-eel catfish is a highly valued fish species in some parts of Indonesia. The fish is common in brackish water of estuaries, marine and freshwater habitat. They are not are not usually catched in commercial scale because of the limited population in its habitat. Although the status is not evaluated, the fish is predicted facing extinction in several countries. We conducted a study to examine the biological information and reproductive biology of the fish in Kota Langsa to gather information that can be utilize to evaluate reproductive status of the fish in several habitats. Parameters tested in the study includes sex ratio, length-weight relationships, candition factor, size at first maturity fecundity and reproductive potential of the fish. Research results provide information that the fish follows negative allometric model with constant condition factor throughout the study. The catches were relatively young fish which have not reached maturity stage. Fishes in the class sized at 510-550 mm provide the largest contribution to total eggs production. To ensure sustainability of the fish it is advised that the fish must catched at size larger than 550 mm.

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Stomach contents of Plotosus canius (Hamilton, 1822) in the coastal waters of Port Dickson, Peninsular Malaysia

Cited by 3 publications

References 2 publications

Seasonal analysis of food items and feeding habits of endangered riverine catfish Rita rita (Hamilton, 1822)

Seasonal analysis of food items and feeding habits of endangered riverine catfish Rita rita (Hamilton, 1822)

Tingkat Kematangan Gonad, Gonadosomatik Indeks dan Hepatosomatik Indeks Ikan Sembilang (Plotosus sp.) di Teluk Pulau Bintan

Biological Aspect of the Grey-eel catfish in Kuala Langsa Estuaries, Aceh

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