scholarly journals Length-Weight Relationship of Asian Seabass (Lates calcarifer Bloch, 1790) from Pichavaram Mangrove Waters, South East Coast of India

2006 ◽  
Vol 19 (2) ◽  
Author(s):  
M. RAJKUMAR ◽  
P.J. ANTONY ◽  
J.P. TRILLES

The length-weight relationship of Asian seabass (Lates calcarifer Bloch, Centropomidae) was estimated for the first time based on a wild population; specimens were collected from Pichavaram mangrove waters during October 2003 to September 2004. A highly significant correlation between length and weight, as a relative condition changing in the course of the year, were particularly observed. These data will be certainly useful for the Asian seabass aquaculture development and fisheries.

2016 ◽  
Vol 63 (3) ◽  
Author(s):  
Prem Kumar ◽  
M. Kailasam ◽  
P. Mahalakshmi ◽  
R. V. Borichangar ◽  
G. J. Vanza ◽  
...  

The length-weight relationship of Asian seabass Lates calcarifer (Bloch, 1790) reared in net cage hapa was studied for a period of 45 days. A total of 22,500 nos. of seabass fry (mean length 1.76 ± 0.39 cm; mean weight 0.132 ± 0.10 g) were stocked in fifteen hapas @ 1500 nos. per hapa (2x1x1m) and fed twice daily with farm made feed @ 10% of the body weight initially and reduced to 8% later on. Sampling was done at an interval of 15 days to assess the growth, survival, cannibalism and performance. On termination of the experiment, survival was 25%. Cannibalism contributed 11–51% to the total mortality. K value >1 indicated healthy condition of fish. During the entire culture period, growth was negatively allometric (b<3). Growth showed an increasing trend from 150.5±13.4 to 732.6±7.7. The study concludes that the hapa system is one of the best option for carrying out the nursery rearing of seabass.


Antiquity ◽  
2007 ◽  
Vol 81 (314) ◽  
pp. 972-988 ◽  
Author(s):  
Roberta Tomber

Ever since Wheeler's triumphant discovery of Roman pottery at Arikamedu in the 1940s, it has been appreciated that the east coast of India was in reach of the Roman Empire. Tracking down the finds of Roman pottery on the Indian sub-continent reported since then, the author discovered that many of the supposed Roman amphorae were actually ‘torpedo jars’ from Mesopotamia. Here the areas of influence of these two great imports, probably of wine, are mapped for the first time.


2021 ◽  
Vol 82 (1) ◽  
Author(s):  
Rinkesh N. Wanjari ◽  
Karankumar K. Ramteke ◽  
Shailendra Raut ◽  
Nishikant Gupta

Abstract Background The present study was performed to determine carapace length–body weight relationship of Charybdis callianassa. In fisheries biology, length–weight relationships are important as they allow for the calculation, by creating a mathematical equation between the two, of the total weight of the fish in a particular group in fish. Such information is helpful for fishery scientists to research the dynamics of development and populations and for public agencies that can maintain and preserve these resources sustainably. Results A study on the carapace length–body weight relationship of Charybdis callianassa (Herbst, 1789) was made on the northwest coast of India for the first time. The study was based on experimental trawl fishing conducted fortnightly from August 2019 to March 2020. A total of 479 specimens, including 262 males and 217 females from fishing trawler, were examined for their carapace length and total weight. The carapace length ranged from 2.69 to 3.54 cm, and the total weight from 5.26 to 7.36 g. This analysis revealed that the crabs exhibited negative allometric development, as shown by average exponents 'b' = 2.71 for pooled data with high coefficient (r) = 0.91 and r2 = 0.83. Conclusions The carapace length–body weight relationship of Charybdis callianassa in relation to sex and carapace was studied in the Mumbai coastal water, India. We found major differences in the average “r2” values of species reported for males (0.89), females (0.79) and pooled data (0.83). Such kind of study is essential for fisheries biology to comprehend the differences in circumstances in small and large specimens that vary with environmental conditions and seasons.


Check List ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. 897 ◽  
Author(s):  
Jigneshkumar N. Trivedi ◽  
Kauresh D. Vachhrajani

Cryptopodia angulata is reported for the first time from Saurashtra coast of Gujarat state. One adult female was found in trawl catch near Sutrapada village of Saurashtra coast on January, 2012. Although the species is not common in Indian waters, this species has been reported from the south east coast of India. This is the first report from Saurashtra coast.


2016 ◽  
Vol 8 (13) ◽  
pp. 9592 ◽  
Author(s):  
Muddula Krishna Naranji ◽  
Velamala Govinda Rao ◽  
Devara Venu

A single specimen of the Sharptail Mola Masturus lanceolatus (Lienard, 1840) (total length 1.39m) was collected from a commercial trawler operated from Visakhapatnam at a depth range of 150–300 m, east coast of India on 12 April 2016.  It was recorded for the first time in Visakhapatnam.  A detailed description, morphometric and meristic characters of the species are provided in this paper 


2018 ◽  
Vol 10 (2) ◽  
pp. 65
Author(s):  
Fadhliyatud Diniyyah

AbstractThis study was carried out to investigate the effect of Asian seabass (Lates calcarifer) culture in floating net cages at the Brackishwater Aquaculture Development Center, Situbondo. Asian seabass were fed with commercial fish pellet (KPA) and fresh fish (trash fish) for 21 days. Seabass fed with trash fish and commercial fish pellet displayed the growth response to the average weight and length. The fish grew from an initial weight of 230g, 238g, and 244g in 21 days and the average length of seabass changed from 23 cm, 25 cm and 28 cm respectively. The fish were fed with 3-7% body weight of fish and the growth was monitored in 21 days. The results showed that trash fish can increase the significant growth response in Asian seabass. AbstrakStudi ini dilaksanakan untuk mengetahui pengaruh budidaya kakap putih Asia (Lates calcarifer) di keramba jarring apung di pusat pengembangan budidaya air payau, Situbondo. Kakap putih Asia diberi pelet ikan komersial (KPA) dengan ikan segar (limbah ikan) selama 21 hari. Kakap putih makan dengan limbah ikan dan pelet ikan komersial menunjukkan respon pertumbuhan rata-rata dari berat dan panjang. Pertumbuhan ikan dari berat awal 230g, 238g dan 244g pada hari ke- 21 dan terjadi perubahan panjang rata-rata kakap putih masing-masing menjadi 23 cm, 25 cm dan 28 cm. Ikan diberi makan dengan 3-7% dari berat badan ikan dan pertumbuhan diamati dalam 21 hari. Hasil penelitian menunjukkan bahwa limbah ikan dapat meningkatkan respon pertumbuhan yang signifikan di kakap putih Asia.


2021 ◽  
Vol 33 (1) ◽  
pp. 147-155
Author(s):  
MOHAMMED ASHRAFUL HAQUE ◽  
MD. ISTIAQUE HOSSAIN ◽  
SHANUR JAHEDUL HASAN ◽  
PROBIN KUMAR DEY

Though Asian Seabass, which is locally known as "Koral"/"Vetki," is a vital species in terms of its popularity and price, little is known about the location of breeding and nursery ground, peak breeding season, peak harvesting season, population dynamics, harvesting operation (gears and crafts used for harvesting) of this species in Bangladesh. An investigation was carried out to enlist the group of crafts and gears that are being operated on the Bay of Bengal coast by the fishermen for Asian seabass harvesting. The survey was based on interviews with the local fishermen and secondary data collected from the regional fisheries offices. The study revealed a total of 10 distinguishing fishing gears, including seven nets and two types of hook and lines were used for harvesting this fish. Some are selective for harvesting Seabass, but most of them are involved in multi-species exploitation. Four types of motorized and two types of non-motorized traditional boats are being used for harvesting the seabass in Bangladesh. The seabass fishery extends almost throughout the year at different life stages. The Koral net, Mela Barshi (Single Hook and line), and Push net were found to be effective for catching adult, pre-adult, and juvenile Asian seabasses, respectively. The Sampan boat and Mela barshi were reported for the first time as fishing boats and fishing gear in Bangladesh.


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