Access the full text.
Sign up today, get DeepDyve free for 14 days.
R. Myers, J. Hutchings (1987)
Mating of anadromous Atlantic salmon, Salmo salar L., with mature male parrJournal of Fish Biology, 31
J. Travis, S. Stearns (1992)
The Evolution of Life HistoriesBioScience
Van Rhijn, Johan Gustaaf (1973)
Behavioural dimorphism in male ruffs Philomachus pugnax (L.)Behaviour, 47
T. Quinn, C. Foote (1994)
The effects of body size and sexual dimorphism on the reproductive behaviour of sockeye salmon, Oncorhynchus nerkaAnimal Behaviour, 48
Z. Ra'anan, A. Sagi (1985)
ALTERNATIVE MATING STRATEGIES IN MALE MORPHOTYPES OF THE FRESHWATER PRAWN MACROBRACHIUM ROSENBERGII (DE MAN)The Biological Bulletin, 169
M. Gross (1984)
Sunfish, salmon, and the evolution of alternative reproductive strategies and tactics in fish
M. Gross (1985)
Disruptive selection for alternative life histories in salmonNature, 313
W. Hamilton (1979)
WINGLESS AND FIGHTING MALES IN FIG WASPS AND OTHER INSECTS
T. Bohlin, C. Dellefors, U. Faremo (1990)
Large or small at maturity―theories on the choice of alternative male strategies in anadromous salmanoidsAnnales Zoologici Fennici, 27
W. Clarke, R. Withler, J. Shelbourn (1992)
Genetic Control of Juvenile Life History Pattern in Chinook Salmon (Oncorhynchus tshawytscha)Canadian Journal of Fisheries and Aquatic Sciences, 49
C. Foote (1990)
An Experimental Comparison of Male and Female Spawning Territoriality in a Pacific SalmonBehaviour, 115
L. Holtby, M. Healey (1990)
Sex‐Specific Life History Tactics and Risk‐Taking in Coho SalmonEcology, 71
T. Caro, C. Fitzgibbon, M. Holt (1989)
Physiological costs of behavioural strategies for male cheetahsAnimal Behaviour, 38
R. Iwamoto, B. Alexander, W. Hershberger (1984)
Genotypic and environmental effects on the incidence of sexual precocity in coho salmon (Oncorhynchus kisutch)Aquaculture, 43
Elisabeth Martin, M. Taborsky (1997)
Alternative male mating tactics in a cichlid, Pelvicachromis pulcher: a comparison of reproductive effort and successBehavioral Ecology and Sociobiology, 41
E. Charnov (1984)
The theory of sex allocation.Monographs in population biology, 18
L. Holtby (1988)
Effects of Logging on Stream Temperatures in Carnation Creek British Columbia, and Associated Impacts on the Coho Salmon (Oncorhynchus kisutch)Canadian Journal of Fisheries and Aquatic Sciences, 45
A. Hanson, H. Smith (1967)
Mate Selection in a Population of Sockeye Salmon (Oncorhynchus nerka) of Mixed Age-groupsWsq: Women's Studies Quarterly, 24
S. Shuster (1989)
MALE ALTERNATIVE REPRODUCTIVE STRATEGIES IN A MARINE ISOPOD CRUSTACEAN (PARACERCEIS SCULPTA): THE USE OF GENETIC MARKERS TO MEASURE DIFFERENCES IN FERTILIZATION SUCCESS AMONG α‐, β‐, AND γ‐MALESEvolution, 43
M. Gross (1991)
Salmon Breeding Behavior and Life History Evolution in Changing EnvironmentsEcology, 72
Mart Gross (1996)
Alternative reproductive strategies and tactics: diversity within sexes.Trends in ecology & evolution, 11 2
H. Bilton, D. Alderdice, J. Schnute (1982)
Influence of Time and Size at Release of Juvenile Coho Salmon (Oncorhynchus kisutch) on Returns at MaturityCanadian Journal of Fisheries and Aquatic Sciences, 39
A. Wilde (1916)
The theory of sex.The Eugenics review, 8 3
W. Clarke, R. Withler, J. Shelbourn (1994)
Inheritance of smolting phenotypes in backcrosses of hybrid stream-type × ocean-type chinook salmon (Oncorhynchus tshawytscha)Estuaries, 17
S. Via, R. Lande (1985)
GENOTYPE‐ENVIRONMENT INTERACTION AND THE EVOLUTION OF PHENOTYPIC PLASTICITYEvolution, 39
M. Keenleyside, H. Dupuis (1988)
Courtship and spawning competition in pink salmon (Oncorhynchus gorbuscha)Canadian Journal of Zoology, 66
S. Tax (1960)
The evolution of life
Abstract1. The movements and breeding behaviour of male coho salmon in Kanaka Creek, British Columbia, Canada, were studied by means of radio-telemetry and detailed observations of males in breeding groups. 2. Males were of three morphological types, large, three year old males (which we term alpha males), small, three year old males (which we term satellite males) and small, two year old 'jack' males (which we term sneak males). All three types of male were common in the population. 3. Males associated with females in breeding groups that included one alpha male and one or more of the two smaller male types. Alpha males dominated in breeding groups. Their movements tended to be restricted to a small section of the spawning stream where they had primary access to redd building females. 4. The majority of aggressive interactions were between resident alpha males and intruding large males, which the resident attempted to drive away. Alpha males would not tolerate another large male nearby and would attack until the intruder left the area. Aggressive interactions between alpha and satellite males or between alpha and sneak males were much less frequent. The alpha males moved from female to female within their section of stream, often returning several times to the same female over the space of a few days. 5. Satellite males adopted positions downstream from a breeding pair. Satellite males were highly mobile within the stream and were observed to join breeding groups at widely spaced locations without significant aggressive interaction with the alpha male. An established satellite male would oppose but not drive away other satellite males attempting to join the breeding group, allowing them to adopt subordinate positions further downstream. The first satellite male in a breeding group would also defend and court the female during periods when the alpha male was absent. 6. Sneak males were most often observed in the spawning redd with the alpha male and female. Sneak males were also found hiding outside the redd early in redd construction, when the cavity of the redd was still shallow, or if the sneak was larger than 30 cm. Sneak males were subject to little aggression from the alpha male or satellite males and displayed the lowest frequency of aggressive interactions of the three types of male. Sneak males would defend their position against other sneak males. Like alpha males, sneak males restricted their movements to a small section of the spawning stream. 7. Overall levels of aggression were lowest in breeding groups consisting of two or three males and much higher in groups consisting of just the alpha male or of four or more males. Intrusion by a large male that challenged the alpha increased the rate of aggressive interaction among all members of the group. 8. Our results suggest three unique breeding tactics among coho males, here termed alpha, satellite and sneak. On the basis of the information currently available, it cannot be determined whether the choice of tactic by a particular male is genetically determined, environmentally determined, or both.
Behaviour – Brill
Published: Jan 1, 1998
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.