PERRIN ET AL.: GROWTH AND REPRODUCTION OF THE EASTERN SPINNER DOLPHIN 



of the range of estimates for other cetaceans (Table 

 13), with only the estimate for 1974 included in the 

 range. The estimated rates for populations 

 thought to have declined due to exploitation {S. 

 attenuata in the eastern Pacific — Perrin et al. 

 1976; D. delphis in the Black Sea — Danilevskiy 

 and Tyutyunnikov 1968; and Eschrichtius — Rice 

 and Wolman 1971) are very close to each other, at 

 13 or 14%. 



ACKNOWLEDGMENTS 



This study would not have been possible without 

 the generous cooperation and assistance of the 

 owners, masters, and crews of the tuna seiners A. 

 K. Strom, Anna Marie, Anne M, Antonina C, 

 Aquarius, Bernadette, Bettie M, Blue Pacific, Bold 

 Contender, Bold Venture, Cabrillo, Captain Vin- 

 cent Gann, Carol Virginia (now Carol S), City of 

 San Diego, Commodore, Connie Jean, Conquest, 

 Constitution, Conte Bianco, Denise Marie, Diana 

 C, Eastern Pacific, Eileen M, Elizabeth Anne, Elsie 

 A, Enterprise, Finisterre, Frances Ann, Gemini, 

 Gina Karen, Independence, Jacqueline A, Jac- 

 queline Marie, Jeanette C, Jeanine, J. M. Mar- 

 tinac, John F. Kennedy, Katherine Lisa, Kathleen, 

 Kerri M, Larry Roe, Lois Seauer, Lucky Strike, 

 Marco Polo, Margaret L., Marietta, Mary An- 

 toinette, Mary Elizabeth, Mermaid, Missouri, 

 Nautilus, Pacific Queen, Pan Pacific, Polaris, 

 Proud Heritage, Queen Mary, Quo Vadis, Rosa 

 Oliva, San Juan, Santa Rosa, Saratoga, Sea 

 Preme, Sea Quest, Sea Royal, South Pacific, 

 Trinidad, Venturous, Voyager, Westport, and 

 Willa G. 



Scientists and technicians (in addition to two of 

 the authors, Perrin and Holts) who collected data 

 and specimens aboard the vessels include G. 

 Ahern, R. E. Amick, G. M. Armstrong, S. F. Baril, 

 A. D. Bates, R. E. Bourke, C. E. Bowlby, D. A. 

 Bratten, R. L. Charter, J. M. Coe, R. W. Cunning- 

 ham, J. D. Dohrman, R. C. Dotson, T. M. Duffy, W. 

 E. Evans, C. M. Fedde, M. L. Fitzsimmons, W. C. 

 Flerx, T. J. Foreman, R. K. Fountain, G. L. Fried- 

 richsen, R. S. Garvie, J. M. Greene, J. A. Halas, D. 

 P. Hoffman, R. Hoffmaster, R. E. Hundt, M. J. 

 Jacobson, J. E. Jurkovich, J. LaGrange, J. F. 

 Lambert, J. S. Leatherwood, K. P. LeVeille, R. E. 

 Loghry, R. W. McLain, R. L. McNeely, C. W. 

 Oliver, R. J. Olson, C. J. Orange, D. J. Otis, C. B. 

 Peters, J. W. Ploeger, A. Poshkus, C. W. Potter, S. 

 H. Powers, F. M. Ralston, S. B. Reiley, C. J. Ryan, 

 0. Seth, K. D. Sexton, T. B. Shay, W. W. Steel, J. H. 



Thompson, P. A. Thompson, G. M. Treinen, D. 

 Twohig, W. H. Tyndall, G. L. Ulrich, L. S. Wade, 

 W. A. Walker, J. A. Young, D. B. Zantiny, and J. A. 

 Zwack. 



R. L. Brownell, Jr., G. D. Fitzgerald, D. W. Rice, 

 W. A. Walker, and D. W. Waller contributed un- 

 published data. J. M. Coe assisted extensively 

 with many phases of the data collection, handling 

 and processing. J. R. Zweifel, A. L. Coan, J. E. 

 Gilbert, T. D. Smith, and N.K. Wiley provided 

 advice and assistance in data processing and 

 analysis. F. G. Alverson of Living Marine Re- 

 sources, Inc., provided invaluable liaison with the 

 tuna fleet. I. Barrett, J. E. Powers, W. W. Fox, J. T. 

 Everett, D. W. K. Au, R. L. Brownell, Jr., J. M. 

 Coe, and D. W. Rice read the manuscript. We 

 thank these persons and others not mentioned for 

 their help. 



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