scholarly journals The effect of stocking density on the transport of pink shrimp Farfantepenaeus brasiliensis (Crustacea: Decapoda), as live bait for sport fishing in Brazil

2014 ◽  
Vol 42 (1) ◽  
pp. 204-212 ◽  
Author(s):  
Luciano Jensen ◽  
Plinio S. Furtado ◽  
Michelle M.S. Fugimura ◽  
Luciano O. Garcia ◽  
Luis H. Poersch ◽  
...  
2021 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Muhammad Aris ◽  
Sudirto Malan

Milkfish (Chanos chanos) is an important economic fish. Milkfish is widely consumed because it has high nutritional value. Milkfish is also used as live bait for fishing. In the milkfish cultivation system, increasing production is a very important factor. One of the efforts to increase production in fish farming systems is the application of high stocking density. Constraints to the application of the high stocking density cause the growth of milkfish to be non-uniform, some of them even experience stunting, which is a condition in which the fish experience slow growth. This study aims to observe the condition of the milkfish tissue with normal growth and stunted fish. Milkfish (Chanos chanos) used are fish that have been reared for 6 months. Fish organs that were sampled for observation were stunted and normal (non-stunting) fish. The organs observed were the gills, muscles, and intestines. The results showed that stunted milkfish (Chanos chanos) affected the condition of the gill tissue, muscles, and intestines. The gills are edema and necrosis. Muscles undergo edema, degeneration of muscle fibers, and necrosis. The intestine experiences necrosis or cell death.Keywords: Milkfish; Stunting; Histology.AbstrakIkan Bandeng (Chanos chanos) merupakan ikan bernilai ekonomis penting. Ikan Bandeng banyak dikonsumsi karena mempunyai nilai gizi yang tinggi. Ikan bandeng juga dimanfaatkan sebagai umpan hidup untuk penangkapan ikan. Pada sistem budidaya ikan Bandeng peningkatan produksi menjadi faktor yang sangat penting. Salah satu upaya peningkatan produksi pada sistem budidaya ikan adalah dengan aplikasi padat tebar yang tinggi. Kendala penerapan padat penebaran yang tinggi menyebabkan pertumbuhan ikan Bandeng tidak seragam, bahkan beberapa diantaranya mengalami stunting yang merupakan suatu kondisi dimana ikan mengalami lambatnya pertumbuhan. Penelitian ini, bertujuan untuk mengamati kondisi jaringan ikan bandeng dengan pertumbuhan normal dan ikan yang mengalami stunting. Ikan Bandeng (Chanos chanos) yang digunakan adalah ikan yang telah dipelihara selama 6 bulan. Organ ikan yang menjadi sampel pengamatan adalah ikan yang mengalami stunting dan normal (non-stunting). Organ yang diamati adalah insang, otot, dan usus. Hasil penelitian menunjukan ikan Bandeng (Chanos chanos) yang mengalami stunting mempengaruhi kondisi jaringan insang, otot dan usus. Insang mengalami edema dan necrosis. Otot mengamali edema, degenerasi serabut otot, dan necrosis. Usus mengalami necrosis atau kematian sel.Kata kunci: Ikan Bandeng, Stunting, Histologi


2015 ◽  
Vol 67 (5) ◽  
pp. 1415-1420 ◽  
Author(s):  
C. S. Pontes ◽  
L. C. Marques ◽  
E. R. Andreatta ◽  
R. S. T. Moura ◽  
G. G. Henry-Silva

ABSTRACTIt is generally believed that increasing feeding frequency has immediate benefits, including reduced nutrient leaching and increased shrimp growth. In this context, the aim this work was to evaluate the effect of feeding frequency in growth performance of Farfantepenaeus paulensis. Juveniles of Farfantepenaeus paulensis were grown for 30 days in pen enclosures, at a stocking density of 5 shrimp/m2. The shrimp were fed on feeding trays at a rate of 8% of their biomass per day, with treatments of one, two, three and four times per day, with four replicates each. The results showed no differences (5% probability) in biomass gain of F. paulensis when feed was offered two, three or four times per day. However, it was observed that the once a day frequency had a negative influence on weight gain for this species of shrimp. We conclude that the supply of food with 35% crude protein twice a day is sufficient for the growth of F paulensis. Feeding frequency of three or four times can provide increased spending in the cultivation of juveniles of this species.


2015 ◽  
Vol 14 (1) ◽  
pp. 167-186
Author(s):  
Mudhar A. S. Abu Tabeekh ◽  
Riyad K. Mosa ◽  
Rabia J. Abbas

2014 ◽  
Vol 96 (2) ◽  
pp. 206-221
Author(s):  
Jane Apostol

Natural scientist Charles Frederick Holder settled in Pasadena in 1885. As a prolific author, lecturer, and editor, Holder was a key promoter of the region, sport fishing, and natural science. He wrote popular children’s books as well. He is also remembered as an influential figure in education and the arts and as a founder of the Tuna Club on Santa Catalina Island and the Valley Hunt Club in Pasadena and its Tournament of Roses.


2015 ◽  
Vol 8 (1) ◽  
pp. 27
Author(s):  
In-Yeong Kwon ◽  
Sun-Ju Moon ◽  
Hyo-Yeong Lee ◽  
De-Hyuk Park ◽  
Jun-Beom Seo ◽  
...  

2008 ◽  
Vol 23 (4) ◽  
pp. 881-887 ◽  
Author(s):  
Krzysztof Kupren ◽  
Dariusz Kucharczyk ◽  
Maja Prusińska ◽  
Sławomir Krejszeff ◽  
Katarzyna Targońska ◽  
...  

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