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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
043 |an-cn-bc|apn-----
045 |ax9x9
0861 |aFs97-4/2091E-PDF|zFs97-4/2091E
1001 |aLeaman, B. M., |d1949- |eauthor.
24510|aW.E. Ricker hydroacoustic cruise to study rockfish behaviour off northern Vancouver Island, March 14-23, 1990 / |cby B.M. Leaman, R. Kieser, P. Withler, and R.D. Stanley.
264 1|aNanaimo, British Columbia, Canada : |bDepartment of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, |c1990.
264 4|c©1990
300 |a1 online resource (iv, 63 pages) : |billustrations, maps.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCanadian manuscript report of fisheries and aquatic sciences, |y0706-6473 ; |v2091
500 |aDigitized edition from print [produced by Department of Fisheries and Oceans].
504 |aIncludes bibliographical references (pages 14-15).
5203 |a"We report preliminary results of a research cruise studying rockfish (Sebastes spp.) school structure and behaviour off Quatsino Sound, British Columbia. Diel distribution and behaviour of shelf and slope rockfishes are described, as well as the transitional pattern between nocturnal and diurnal distributions. The species studied (S. entomelas, S. proriger, S. reedi) showed restricted bathymetric ranges, whose areal extent was governed by bottom slope. Diurnal distributions were characterized by dense, bottom-oriented schools. Nocturnal distributions showed much more diffuse schools, both on-bottom and in the midwater. Transitional behaviour was completed within approximately 30 min on clear days, but was extended for up to 1 h on foggy or overcast days. The normal transition pattern was one of disaggregation of diurnal schools, followed by vertical movement. We also present brief results of observations, using a trawl surveillance sonar, of fish behaviour within the mouths of bottom and midwater trawls"--Abstract, page iii.
546 |aIncludes abstracts in English and French.
650 0|aSebastes|zBritish Columbia|zPacific Coast.
650 0|aSebastes|xBehavior|zBritish Columbia|zPacific Coast.
650 0|aFish surveys|zBritish Columbia|zPacific Coast.
650 6|aSébastes|zColombie-Britannique|zPacifique, Côte du.
650 6|aSébastes|xMœurs et comportement|zColombie-Britannique|zPacifique, Côte du.
650 6|aInventaires ichtyologiques|zColombie-Britannique|zPacifique, Côte du.
7101 |aCanada. |bDepartment of Fisheries and Oceans, |eissuing body.
7102 |aPacific Biological Station (1972- ), |eissuing body.
830#0|aCanadian manuscript report of fisheries and aquatic sciences ;|v2091.|w(CaOODSP)9.505211
85640|qPDF|s2.04 MB|uhttps://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-2091-eng.pdf