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Biological Aspects of Large Whitespotted Conger (Conger myriaster) in the Akashi Strait, Eastern Seto Inland Sea, Japan
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gorie, Shigeaki Nagasawa, Kazuya |
| Copyright Year | 2012 |
| Abstract | This paper reports on various biological aspects of whitespotted conger (Conger myriaster) on the basis of a long-term pot survey conducted in the Akashi Strait from 1982 to 2009. The fish caught consisted of one or two major size groups, and large females (>500 mm total length) were predominant. Both the gonadosomatic index and condition factor of large females were higher in winter ( January and February) than those in other seasons. Females appear to spend for up to four years in this strait and then begin a spawning migration by age-5 to other waters. While catch per unit effort (CPUE) in the pot survey showed considerably large annual and seasonal fluctuations, it was high from May to August and from November to January when bottom water temperature ranged from 10 –25°C but low from September to October (>25°C) and from February to April (<10°C). The Akashi Strait is likely to be an important habitat of large whitespotted conger for their early maturation. |
| Starting Page | 341 |
| Ending Page | 348 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.11233/aquaculturesci.60.341 |
| Alternate Webpage(s) | https://www.jstage.jst.go.jp/article/aquaculturesci/60/3/60_341/_pdf/-char/en |
| Alternate Webpage(s) | https://doi.org/10.11233/aquaculturesci.60.341 |
| Volume Number | 60 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
