منابع مشابه
Study on the fishing performance of an alternative tubular-type pot for the common octopus, Octopus minor, in Korean coastal waters
We aimed to develop alternative fishing gear for catching the common octopus, to decrease the use of bait and operating costs in comparison to commercial net pots. A tubular-type pot was designed, and behavioral responses of the common octopus were experimentally monitored in tank and replicated 10 times to compare fishing performances between 300 experimental and 300 commercial net pots in the...
متن کاملStudy on the fishing performance of an alternative tubular-type pot for the common octopus, Octopus minor, in Korean coastal waters
We aimed to develop alternative fishing gear for catching the common octopus, to decrease the use of bait and operating costs in comparison to commercial net pots. A tubular-type pot was designed, and behavioral responses of the common octopus were experimentally monitored in tank and replicated 10 times to compare fishing performances between 300 experimental and 300 commercial net pots in the...
متن کاملSpawning Characteristics and Artificial Hatching of Female Mottled Skate, Beringraja pulchra in the West Coast of Korea
The gonadsomatic index (GSI) of mottled skate was the highest in April, GSI and HSI showed a reverse phase for its reproductive cycle. The fish had one pair of egg capsules, having 1 to 7 fertilized eggs, and spawned all the year round. When surveying the reproductive characteristics of females over 63 ㎝ in disc width, we found the spawning peak was between April to June, and the appearance rat...
متن کاملEffect of different salinity level on spawning, fertilization, hatching and survival of common carp, Cyprinus carpio (Linnaeus, 1758) in semi-artificial environment
The effects of various salinity levels among (0‰, 5‰, 10‰, 15‰, and 20‰) for successful breeding of Common carp, Cyprinus carpio were investigated. The duration of study was 75 days. Ripe broodstock (30) having a mean weight (male 1027±2.4g and female 1084.8±23g) were selected and stocked into spawning tanks (2000-liter). The Ratio among male and female was 2:1. They were fed with commercial fl...
متن کاملEmbryonic, early larval development time, hatching mechanism and interbrood period of the sac-spawning euphausiid Nyctiphanes simplex Hansen
Females of the sac-spawning euphausiid Nyctiphanes simplex Hansen were incubated under shipboard laboratory conditions to observe the embryonic and larval development time and hatching mechanism. Females ready to spawn have a pale pink ovary that extends from the back of the stomach to the first abdominal segment, filling most of the haemocoel. This species usually behaves as a total spawner (p...
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ژورنال
عنوان ژورنال: Journal of the Korean Fisheries Society
سال: 2007
ISSN: 0374-8111
DOI: 10.5657/kfas.2007.40.4.243