Distribution and abundance of &lt;i&gt;Parailia pellucida&lt;/i&gt; (Boulenger, 1901) (Schilbeidae) in the fresh water reaches of the lower nun river, Niger Delta, Nigeria

Allison, M E; Sikoki, S D; Hart, Ibitoruh; Abowei, J. F. N.; Ansa, EJ

doi:10.4314/ijotafs.v1i1.40882

Cited by 5 publications

(6 citation statements)

References 6 publications

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“…The non variation in abundance with photoperiod of P. leonensis in this study is at variance with Allison et al (2007) who observed significantly higher catches (P < 0.05) of P. pellucida by night (62.7%) than day (37.3%) in the study area. This may be attributed to differences in feeding regimes / migration patterns which is an exhibittion of species dependent mutually exclusive tendencies in the same ecological environment.…”

Section: Discussioncontrasting

confidence: 86%

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Abundance and gill net selectivity of Pellonula leonensis in the Lower Nun River, Niger Delta, Nigeria

Kingdom¹,

Allison²

2007

Afr. J. Biotechnol.

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The abundance of Pellonula leonensis in relation to location, photoperiod, depth, tide, season and gill net selectivity was studied from May 2001 to April, 2002 in the Lower Nun River, Niger Delta. Three sets of gill net with stretched mesh sizes of 8, 12 and 15 mm respectively were used each measuring 35 m in length and 3 m in depth having a surface area of 105 m 2. Abundance was least in September and highest in February and P. leonensis was more dominant in the convex area of the river and lowest in the concave section. There was no significant variation (P > 0.05) in abundance of P. leonensis with photoperiod, water depth, tide and season. There was gillnet selectivity with the medium mesh size (12 mm) gill net as more effective constituting 68.77% of the total catch of P. leonensis in the Lower Nun River.

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Section: Discussioncontrasting

confidence: 86%

“…This suggests that the convex area is capable of providing enough food, shelter and breeding sites for P. leonensis. Allison et al (2007) made a similar observation.…”

Section: Discussionsupporting

confidence: 61%

Abundance and gill net selectivity of Pellonula leonensis in the Lower Nun River, Niger Delta, Nigeria

Kingdom¹,

Allison²

2007

Afr. J. Biotechnol.

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“…L'étude détaillée du spectre alimentaire des différentes classes d'âge a montré que l'alimentation des individus quel que soit leur âge est dominé par les diatomées pennées. Lesquels résultats pourraient s'expliquer par l'abondance des diatomées pennées dans les lagunes et les estuaires ou par une préférence alimentaire de M. cephalus pour ce type d'algue (Sánchez, 2002 ;Bekova et al, 2013et Soyinka, 2008 (Hacunda , 1981 ;Soyinka, 2008 ;Allison et Sikoki, 2013). L'étude du régime alimentaire de M. cephalus en fonction des classes n'a pas montré de variation significative au niveau de l'estuaire du fleuve Sénégal pour les classes d'âge 0 + , I + , II + .…”

Section: Introductionunclassified

Régime alimentaire du mulet jaune (<i>Mugil cephalus</i>, Linneaus, 1758, Mugilidea) dans l’estuaire du fleuve Sénégal

Sarr¹,

Kabre²,

Niass³

2013

J. App. Bioscience.

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“…Penggunakan jaring dengan mata besar akan menangkap ikan yang sudah layak tangkap sehingga recruitment overfishing dapat dihindari (Froese, 2004). Sebagai penunjuang pernyataan ini, penelitan selektivitas jaring insang sudah sering dilakukan (contohnya Allison et al 2009;Hutubessy and Syahailatua, 2010;Hutubessy, 2011). Hasil-hasil penelitian selektivitas jaring insang di atas mempunyai peranan penting dalam upaya perlindungan populasi singlespecies (species tunggal).…”

Section: Pendahuluanunclassified

Evaluasi Selektivitas Jaring Insang Di Teluk Kotania, Seram Bagian Barat

Hutubessy

2020

j.eng

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Jaring insang digolongkan sebagai alat tangkap yang ramah lingkungan mengingat ukuran ikan yang tertangkap dipengaruhi oleh ukuran mata jaring yang digunakan. Penelitian yang dilakukan selama 2013-2014 di perairan Kotania, Kabupaten Seram Bagian Barat bertujuan untuk menghitung kelimpahan ikan pada spektrum ukuran (abundance size-spectrum) berdasarkan habitat ikan pada waktu yang berbeda. Data dikumpulkan melalui logbook yang diisi oleh nelayan Dusun Pulau Osi dan Dusun Wael dengan daerah penangkapan di Teluk Kotania. Distribusi panjang ikan hasil tangkapan setiap mata jaring menunjukkan kisaran panjang yang tidak beraturan yang bisa menimbulkan selektivitas yang tidak konsisten. Ketidakpastian selektivitas jaring insang yang dioperasikan pada perairan dangkal disebabkan oleh perubahan pilihan habitat sebagai daerah penangkapan nelayan. Spektrum panjang menunjukkan distribusi panjang yang unimodal dengan jumlah ikan jenis ikan berukuran kecil tinggi dan menurun secara eksponensial untuk jenis ikan berukuran besar. Mengingat ikan besar mempunyai peranan penting dalam komunitas, dan kurang rentan terhadap jaring insang, kami menyimpulkan bahwa jaring insang adalah alat yang ramah lingkungan.EVALUATION OF GILLNET SELECTIVITY IN KOTANIA BAY, WEST PART OF SERAM. Gillnets are categorized as environmentally friendly fishing gear convinced by its selectivity. Study conducted at Kotania Bay, West Seram Regency, for two years (2012-2013) aimed to count the abundance size-spectrum on habitat for evaluating the catch of gillnets. Length distribution of catch for each mesh size showed irregular ranges, which may lead to selectivity uncertainties. Data was collected from logbooks filled by fishers from Osi Island and Wael. Uncertainty of gillnets selectivity which were operated in shallow waters was influenced by the fishers’ habitat preference that was distinct temporally. The size-spectra of exhibited unimodal length distribution with high catch of small-bodied species and lowered exponentially towards large-bodied species. As large- bodied species play important role in the community and they are less vulnerable to gillnets, we concluded that the practices of gillnet at Kotania Bay are environmentally friendly gear.

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Distribution and abundance of <i>Parailia pellucida</i> (Boulenger, 1901) (Schilbeidae) in the fresh water reaches of the lower nun river, Niger Delta, Nigeria

Cited by 5 publications

References 6 publications

Abundance and gill net selectivity of Pellonula leonensis in the Lower Nun River, Niger Delta, Nigeria

Abundance and gill net selectivity of Pellonula leonensis in the Lower Nun River, Niger Delta, Nigeria

Régime alimentaire du mulet jaune (<i>Mugil cephalus</i>, Linneaus, 1758, Mugilidea) dans l’estuaire du fleuve Sénégal

Evaluasi Selektivitas Jaring Insang Di Teluk Kotania, Seram Bagian Barat

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