東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

BEHAVIOR DURING MIGRATION AND RHYTHM...

WIPPELHAUSER, GAIL S.

Linked to FindBook

Google Book

Amazon

博客來

BEHAVIOR DURING MIGRATION AND RHYTHMIC ACTIVITY UNDER CONTROLLED CONDITIONS OF JUVENILE AMERICAN EELS (ANGUILLA ROSTRATA) (TIDAL STREAM TRANSPORT, MAINE).

Record Type:	Electronic resources : Monograph/item
Title/Author:	BEHAVIOR DURING MIGRATION AND RHYTHMIC ACTIVITY UNDER CONTROLLED CONDITIONS OF JUVENILE AMERICAN EELS (ANGUILLA ROSTRATA) (TIDAL STREAM TRANSPORT, MAINE)./
Author:	WIPPELHAUSER, GAIL S.
Description:	98 p.
Notes:	Source: Dissertation Abstracts International, Volume: 47-10, Section: B, page: 4090.
Contained By:	Dissertation Abstracts International47-10B.
Subject:	Biology, Zoology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8703318

BEHAVIOR DURING MIGRATION AND RHYTHMIC ACTIVITY UNDER CONTROLLED CONDITIONS OF JUVENILE AMERICAN EELS (ANGUILLA ROSTRATA) (TIDAL STREAM TRANSPORT, MAINE).
WIPPELHAUSER, GAIL S.

BEHAVIOR DURING MIGRATION AND RHYTHMIC ACTIVITY UNDER CONTROLLED CONDITIONS OF JUVENILE AMERICAN EELS (ANGUILLA ROSTRATA) (TIDAL STREAM TRANSPORT, MAINE). - 98 p.

Source: Dissertation Abstracts International, Volume: 47-10, Section: B, page: 4090.

Thesis (Ph.D.)--The University of Maine, 1986.

I conducted a field study to determine how precisely the semidiurnal vertical migrations of juvenile Anguilla rostrata are timed to slack water and to measure the length of time spent in the water column.Subjects--Topical Terms:

1018632
Biology, Zoology.

BEHAVIOR DURING MIGRATION AND RHYTHMIC ACTIVITY UNDER CONTROLLED CONDITIONS OF JUVENILE AMERICAN EELS (ANGUILLA ROSTRATA) (TIDAL STREAM TRANSPORT, MAINE).
LDR:03032nmm 2200289 4500 001 1835805
005 20080107105520.5
008 130610s1986 d
035 $a (UMI)AAI8703318
035 $a AAI8703318
040 $a UMI $c UMI
100 1 $a WIPPELHAUSER, GAIL S. $3 1924428
245 1 0 $a BEHAVIOR DURING MIGRATION AND RHYTHMIC ACTIVITY UNDER CONTROLLED CONDITIONS OF JUVENILE AMERICAN EELS (ANGUILLA ROSTRATA) (TIDAL STREAM TRANSPORT, MAINE).
300 $a 98 p.
500 $a Source: Dissertation Abstracts International, Volume: 47-10, Section: B, page: 4090.
502 $a Thesis (Ph.D.)--The University of Maine, 1986.
520 $a I conducted a field study to determine how precisely the semidiurnal vertical migrations of juvenile Anguilla rostrata are timed to slack water and to measure the length of time spent in the water column.
520 $a Eels were sampled on 20 dates in the Penobscot River estuary, Maine, with paired plankton nets in a series of tows which encompassed the flood tide. For each tow the average catch was converted to a percent of the total catch for that flood tide. The times of ascents and descents were compared to the time of slack water, estimated from concurrent velocity profiles. The time that eels spent in the water column was the time between ascents and descents.
520 $a There was a significant trend in the timing of ascents relative to the time of slack water in three different water conditions. The timing of descents relative to slack water was not significantly different in the three water conditions. The length of time eels spent in the water column on the flood tide was not significantly different in the three water conditions, which would be the case if the eels' sojourns were timed by an endogenous clock. If eels used exogenous cues their sojourns would vary in length, because the timing of these cues varies.
520 $a I conducted experiments to determine whether eels collected from tidal and nontidal water show evidence of endogenous activity rhythms, and whether these activity rhythms can be entrained.
520 $a Eels were videotaped in groups or individually for at least 75 h. I analyzed for the presence, significance, and periodicity of activity rhythms.
520 $a Groups of eels from tidal water displayed activity rhythms with circatidal periodicities, but groups from nontidal water did not. The activity rhythms of eels from tidal water appeared to be entrained by changes in current direction every 6.2 h but not by changes in current direction every 5.0 h. Eels from tidal water subjected to water changes every 5.0 h showed no rhythmic activity. Only two of 100 eels observed individually were periodically active. The activity rhythms would allow an eel to time its vertical migrations despite varying environmental conditions.
590 $a School code: 0113.
650 4 $a Biology, Zoology. $3 1018632
690 $a 0472
710 2 $a The University of Maine. $3 1029373
773 0 $t Dissertation Abstracts International $g 47-10B.
790 $a 0113
791 $a Ph.D.
792 $a 1986
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8703318