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Record #42707:
The seasonal migratory cycle of humpback whales / William H. Dawbin.
Title: | The seasonal migratory cycle of humpback whales / William H. Dawbin. |
Author(s): | Dawbin, William H. |
Date: | 1966. |
Publisher: | Berkeley, CA: University of California Press |
In: | Whales, dolphins, and porpoises. (1966.), |
Abstract: | The following aspects of the seasonal migratory cycle of humpback whales are discussed: routes, factors determining routes, intermingling between populations, migration rate, and temporal segregation within Southern Hemisphere migratory stocks, including northbound and southbound humpbacks and those in Antarctic waters. The effects of sea temperature and day length on the annual cycle are discussed. The review of known humpback migration routes and assembly regions in both hemispheres indicates that humpbacks require tropical coastal conditions, with water temperature at about 25°C for breeding, but do not require coastal conditions at other stages of the migratory cycle. Nor can the migration routes be related consistently to the direction of ocean currents, the nature of water masses, or bottom topography. The decline in day length during the feeding cycle is regarded as the likely stimulus initiating different migration times for lactating as compared with pregnant females. The timing of immature animals and mature males appears relatively constant from season to season. |
Notes: | In: Whales, dolphins, and porpoises / Kenneth S. Norris, ed. |
Keywords: | 59 -- Zoology. 599(26) -- Sea mammals. 599.5 -- Cetacea. 599.511 -- Balaenopteridae: Megaptera novaeangliae. 591.5 -- Animal behaviour. 591.543.43 -- Animal migration. 061.3 -- Conferences: 1963 International Symposium on Cetacean Research, 1st. H6 -- Zoology: mammals. |
SPRI record no.: | 42707 |
LDR 02192naa#a2200000#a#4500 001 SPRI-42707 005 20240328183057.0 007 ta 008 240328s1966####caua###|#2###|1||#0#eng#d 035 ## ‡aSPRI-42707 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aDawbin, William H. 245 14 ‡aThe seasonal migratory cycle of humpback whales /‡cWilliam H. Dawbin. 260 ## ‡aBerkeley, CA :‡bUniversity of California Press,‡c1966. 300 ## ‡ap. 145-170 :‡btable, graphs, diags. 500 ## ‡aIn: Whales, dolphins, and porpoises / Kenneth S. Norris, ed. 520 3# ‡aThe following aspects of the seasonal migratory cycle of humpback whales are discussed: routes, factors determining routes, intermingling between populations, migration rate, and temporal segregation within Southern Hemisphere migratory stocks, including northbound and southbound humpbacks and those in Antarctic waters. The effects of sea temperature and day length on the annual cycle are discussed. The review of known humpback migration routes and assembly regions in both hemispheres indicates that humpbacks require tropical coastal conditions, with water temperature at about 25°C for breeding, but do not require coastal conditions at other stages of the migratory cycle. Nor can the migration routes be related consistently to the direction of ocean currents, the nature of water masses, or bottom topography. The decline in day length during the feeding cycle is regarded as the likely stimulus initiating different migration times for lactating as compared with pregnant females. The timing of immature animals and mature males appears relatively constant from season to season. 650 07 ‡a59 -- Zoology.‡2udc 650 07 ‡a599(26) -- Sea mammals.‡2udc 650 07 ‡a599.5 -- Cetacea.‡2udc 650 07 ‡a599.511 -- Balaenopteridae: Megaptera novaeangliae.‡2udc 650 07 ‡a591.5 -- Animal behaviour.‡2udc 650 07 ‡a591.543.43 -- Animal migration.‡2udc 650 07 ‡a061.3 -- Conferences: 1963 International Symposium on Cetacean Research, 1st.‡2udc 650 07 ‡aH6 -- Zoology: mammals.‡2local 773 0# ‡7nnam ‡aKenneth S. Norris, ed. ‡tWhales, dolphins, and porpoises. ‡dBerkeley, CA : University of California Press, 1966. ‡wSPRI-42207 876 ## ‡zSPRI also has offprint in Pamphlets 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240328