Spawning frequency and batch fecundity of skipjack tuna Katsuwonus pelamis in the tropical west-central Pacific Ocean
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چکیده
منابع مشابه
Weight–length relationships and Fulton’s condition factors of skipjack tuna (Katsuwonus pelamis) in the western and central Pacific Ocean
This paper describes the weight-length relationships (WLRs) and Fulton's condition factors (K) of skipjack tuna (Katsuwonus pelamis) in purse seine fisheries from three cruises in the western and central Pacific Ocean (WCPO): August-September 2009 (AS09), November-December 2012 (ND12), and June-July 2013 (JJ13). The fork length and weight of a total of 1678 specimens were measured. The results ...
متن کاملGluconeogenesis in hepatocytes isolated from the skipjack tuna (Katsuwonus pelamis)
Skipjack ~ U M (Karsuwonus pelamis) hepatocytes were isolated and determined to be viable based on ttypan blue exclusion, energy charge, and lactate dehydrogenase leakage. Trypan blue staining and red blood cell contamination were always less than 0.1 % , and lactate dehydrogenase leakage remained less than 1 % at 25°C for 10 h. The energy charge for freshly isolated cells ranged from 0.65 to 0...
متن کاملParasites of Skipjack Tuna, Katsuwonus Pelamis: Fishery Implications
The numbers of 26 types of parasites were counted in 878 fish, of which all but 3 we.e from 14 areas in the Pacific. Data from the 22 most reliable parasites gave no evidence of discrete stocks of skipjack tuna in the Pacific, either when analyzed singly or when using combinations of parasites in multivariate analyses. New Zealand fish carried many tropical parasites, particularly didymozoids, ...
متن کاملClose genetic similarity of Atlantic and Pacific skipjack tuna ( Katsuwonus pelamis ) demonstrated with restriction endonuclease analysis of mitochondrial DNA
Restriction endonuclease analysis of mitochondrial DNA indicated a surprisingly high degree of genetic similarity between skipjack tuna (KarsuLcorzus pe/urni.r) from the Atlantic and Pacific Oceans. The present results (1983) support the findings of previous morphological and electrophoretic studies. Evidently. since the uplift of the Panama land bridge about 3.1 million years ago, there has be...
متن کاملEffects of temperature change on acid-base regulation in skipjack tuna (Katsuwonus pelamis) blood.
The effects of temperature change (in vitro) on acid-base balance of skipjack tuna blood were investigated. By examining the relationship between blood pH and temperature (in vitro) under conditions of constant CO2 tension (open system), it was observed that dpH/dT = -0.013 U/degrees C. This value falls well within the range of in vivo values reported for other ectothermic vertebrates, and is o...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 2008
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.74.802