Serotonin induced changes in the expression of ovarian gene network in the Indian white shrimp, Penaeus indicus

Aquaculture ◽  
2016 ◽  
Vol 452 ◽  
pp. 239-246 ◽  
Author(s):  
Sherly Tomy ◽  
P. Saikrithi ◽  
Nithoon James ◽  
C.P. Balasubramanian ◽  
A. Panigrahi ◽  
...  
2021 ◽  
Author(s):  
Erish G. Estante‐Superio ◽  
Sheryll S. Santander‐Avanceña ◽  
Leobert D. Peña ◽  
Esteban S. Garibay ◽  
Rosthon S. Gardoce ◽  
...  

2019 ◽  
Vol 86 (sp1) ◽  
pp. 43
Author(s):  
Christina Lalramchhani ◽  
Changaramkumarath Paran Balasubramanian ◽  
Akshay Panigrahi ◽  
Tapas Kumar Ghoshal ◽  
Sanjoy Das ◽  
...  

Author(s):  
Iin Ika Wahyuni ◽  
Anhar Solichin ◽  
Suradi Wijaya Saputra

 Salah satu potensi perikanan di perairan Brebes dan Tegal adalah Udang Putih yang terancam kelestariannya akibat meningkatnya penangkapan dengan Jaring Arad. Tujuan penelitian ini untuk mengetahui aspek biologi udang P. indicus dan status sumberdayanya, seperti komposisi hasil tangkapan, struktur ukuran, sifat pertumbuhan, dan aspek reproduksi. Metode penelitian yang digunakan yaitu metode survei. Sampel udang diambil 100% dari total hasil tangkapan tiap perahu karena hasil tangkapan kurang dari 100 ekor. Pengambilan sampel enam kali dari Juli-Desember 2016. Tempat pengambilan sampel di TPI Kluwut, Kaliwlingi, Larangan dan Surodadi. Hasil penelitian nilai L50%P. indicus di sebelah utara Brebes dan Tegal memiliki panjang total 84 mm dan 85 mm, nilai ½ L∞ yaitu 97 mm (jantan) dan 121 mm (betina). L50% < ½ L∞ berarti ukuran udang yang tertangkap masih kecil sehingga dikhawatirkan terjadinya growth overfishing. Sifat pertumbuhan udang jantan dan betina di Brebes yaitu isometrik (b=2,98) dan alometrik negatif (b=2,86), di Tegal yaitu alometrik positif (b= 3,43) dan isometrik (b= 3,02). Nilai faktor kondisi P. indicus di Brebes 1,63 (jantan) dan 1,59 (betina), sedangkan di Tegal 1,81 (jantan) dan 1,57 (betina). Perbandingan nisbah kelamin P. indicus di Brebes 1: 4,4 dan di Tegal 1: 2,9. Status tingkat pemanfaatan sumberdaya udang P. indicus di sebelah utara Brebes dan Tegal perlu penyempurnaan untuk memenuhi syarat perikanan yang berkelanjutan. One of the potential fishery in the Brebes and Tegal waters is P. Indicus shrimp that has been threatened by increasing fishing effort of Arad net. The purpose of this research to know biological aspects of P. indicus and resources status, such as composition of catch, size of structure, growth, and reproduction aspects. The method used is survey method. Shrimp samples were taken at random 10% of the total catch per boat. Sampling six times from July to December 2016. The sampling at TPI Kluwut, TPI Kaliwlingi, TPI Larangan and TPI Surodadi. The results of research L50% value of P. indicus in north Brebes and Tegal has 84 mm and 85 mm TL, ½ L∞ are 97 mm (males) and 121 mm (females). L50% <½ L∞ mean size of shrimp caught are ssmall to worry about the occurrence of growth overfishing. The growth of males and females shrimp in Brebes are isometric (b = 2.98) and negative allometric (b = 2.86), in Tegal growth of males and females are positive allometrik (b = 3.43) and isometric (b = 3.02). Condition factor P. indicus in Brebes are 1.63 (males) and 1.59 (females), whereas in Tegal are 1.81 (males) and 1.57 (females). Sex ratio P. indicus in Brebes 1: 4.4 and in Tegal 1: 2.9. Status of the level of resource P. indicus need improvement to qualify sustainable fisheries.  


2019 ◽  
Vol 86 (sp1) ◽  
pp. 65 ◽  
Author(s):  
Panantharayil Sudhayam Shyne Anand ◽  
Changaramkumarath P. Balasubramanian ◽  
Biju Francis ◽  
Akshaya Panigrahi ◽  
Radhakrishnapillai Aravind ◽  
...  

2019 ◽  
Vol 20 (5) ◽  
Author(s):  
SURADI WIJAYA SAPUTRA ◽  
ANHAR SOLICHIN ◽  
WIWIET TEGUH TAUFANI ◽  
SITI RUDIYANTI ◽  
NINIEK WIDYORINI

Abstract. Saputra SW, Solichin A, Taufani WT, Rudiyanti S, Widyorini N. 2019. Growth parameter, mortality, recruitment pattern, and exploitation rate of white shrimp Penaeus indicus on the northern coast of Central Java, Indonesia. Biodiversitas 20: 1318-1324. The aims of this study were to know the growth parameters, first lenght captured (Lc), mortality, recruitment pattern, and the exploitation rate of white shrimp (Penaeus indicus H.Milne Edwards, 1837) in the Western Coastal North Central Java Sea, Indonesia. Samples were collected from May 2016 to July 2017 using survey method and direct observations on fishing unit areas. The results showed that the relationship of the carapace length and weight is allometric. Based on the estimates of von Bertalanffy growth equation to the carapace length, the growth parameters of CL∞ and K values in male were 37 mm and 0.97, while in female were 38.5 mm and 0.85. While, the rates of total mortality (Z), natural mortality (M), and fishing mortality (F) were 3.5, 1.67, and 1.84 for males, and 5.03, 1.51, and 3.52 for females, respectively. The exploitation rate (E) of male shrimp was 0.52 and of female was 0.7 indicating that female shrimp get higher capture pressure than the males. It also showed that the rate of exploitation has to exceed the optimum sustainable yield (E>0.5). Time recruitment occurred throughout the year, with two peak seasons, i.e., in April-June and September-November. Moreover, the length of the carapace during recruitment was 15-20 mm. While the carapace length of the first caught (CL∞50) was 18.3 mm for male and 17.6 mm for female indicating that the P. indicus caught was still in the small size, as well as below the first mature gonad (CLm50 = 22-39 mm). This is because the mesh size of cod-end is 0.75 inches or about 2 cm.


2018 ◽  
Vol 5 (1) ◽  
pp. 1-24
Author(s):  
Betrix Silitonga ◽  
Manuntun Parulian Hutagaol

This study aimed to analyze the factors that affect the volume of Indonesian exports of white shrimp (Penaeus indicus) to Hongkong and to formulate policies that can increase the volume of exports. Ordinary Least Square method (OLS) is used to analyze the factors that affect the volume of Indonesian white shrimp exports to Hongkong by time series data (time series) period of the last 24 years (1990 until 2013). All independent variables that have significant influence on the volume of Indonesian exports of white shrimp, which are: Hongkong population, Hongkong GDP per capita constant 2005, the nominal selling price of white shrimp Indonesia to Hongkong, the nominal selling price of white shrimp competitor to Hongkong, the nominal exchange rate of the Indonesian to Hongkong and Indonesian economic crisis in 1998 (dummy). Key words: Hongkong, Ordinary Least Square (OLS), the export volume, the white shrimp (Penaeus indicus)


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