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Age, size, sex, growth, and migratio...

Oliveira, Kenneth.

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Age, size, sex, growth, and migrations of yellow and silver phase American eels.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Age, size, sex, growth, and migrations of yellow and silver phase American eels./
作者:	Oliveira, Kenneth.
面頁冊數:	139 p.
附註:	Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5174.
Contained By:	Dissertation Abstracts International55-12B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9513250

Age, size, sex, growth, and migrations of yellow and silver phase American eels.
Oliveira, Kenneth.

Age, size, sex, growth, and migrations of yellow and silver phase American eels. - 139 p.

Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5174.

Thesis (Ph.D.)--University of Rhode Island, 1994.

Several aspects of the life history of the American eel Anguilla rostrata in the Annaquatucket River, RI were investigated using yellow and silver phase eels. Movements and growth rate of yellow phase eels were studied by use of mark (liquid nitrogen-cooled brands) and recapture (electrofishing) techniques. Marked yellow eels were also injected with tetracycline (75.0 mg/kg body wt.) to validate the periodicity of growth rings present on the otoliths. Migrating silver eels were collected in fyke nets in 1990 and 1991 to examine age, length, and growth rates. The effects of river location and sex on these life history parameters was also evaluated.Subjects--Topical Terms:

1017726
Biology, Ecology.

Age, size, sex, growth, and migrations of yellow and silver phase American eels.
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040 $a UMI $c UMI
100 1 $a Oliveira, Kenneth. $3 1924442
245 1 0 $a Age, size, sex, growth, and migrations of yellow and silver phase American eels.
300 $a 139 p.
500 $a Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5174.
500 $a Major Professor: William H. Krueger.
502 $a Thesis (Ph.D.)--University of Rhode Island, 1994.
520 $a Several aspects of the life history of the American eel Anguilla rostrata in the Annaquatucket River, RI were investigated using yellow and silver phase eels. Movements and growth rate of yellow phase eels were studied by use of mark (liquid nitrogen-cooled brands) and recapture (electrofishing) techniques. Marked yellow eels were also injected with tetracycline (75.0 mg/kg body wt.) to validate the periodicity of growth rings present on the otoliths. Migrating silver eels were collected in fyke nets in 1990 and 1991 to examine age, length, and growth rates. The effects of river location and sex on these life history parameters was also evaluated.
520 $a Yellow eels were found to have restricted movements and it is concluded that smaller eels ( $< $1 80 mm) conduct the majority of the upstream migration in this river. Growth of eels in the Annaquatucket River appears to occur during a 214 day growth period, when water temperatures exceed 10 $\ sp\circ $\ sp{-1} $) than males (30.2 mm yr $\ sp{-1} $) . Male eels comprised 95.6 percent of the migrating population. Upstream locations produced significantly older and slower growing eels. Female eels were only collected from upstream nets indicating a preference for the slower growth habitats. Data from this population support previous hypotheses that length and age increase with latitude. However, the sex ratio of eels in this river contradicts the hypothesis that the proportion of male eels declines at higher latitudes.
590 $a School code: 0186.
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Zoology. $3 1018632
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
690 $a 0329
690 $a 0472
690 $a 0792
710 2 $a University of Rhode Island. $3 1022014
773 0 $t Dissertation Abstracts International $g 55-12B.
790 1 0 $a Krueger, William H., $e advisor
790 $a 0186
791 $a Ph.D.
792 $a 1994
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9513250