Table 1: Principal survey items and related studies Study Item: A: Morphology/Genetics (incl. stock delineation) B: Physiology (incl. internal secretions) B: Nutritive chem./Biochem. D: Age determination E: Growth F: Migration/Segregation G: Reproduction/Maturation H: Recruitment I: Life table J: Mortality K: Stock-recruitment relation L: Random change M: Ecosystem/Environment +=============================================================================== | Materials/Data | A B C D E F G H I J K L M +=====================================+========================================= | Earplug (incl. chemical analysis) | o +-------------------------------------+----------------------------------------- | Typanic bulla | o +-------------------------------------+----------------------------------------- | Baleen plate | o +-------------------------------------+----------------------------------------- | Age | o o o o o o o o o o o +-------------------------------------+----------------------------------------- | Age composition | o o o o o o +-------------------------------------+----------------------------------------- | Age at sexual maturity | o o o o o o +-------------------------------------+----------------------------------------- | Age comp. by schhol size | o o +-------------------------------------+----------------------------------------- | Body length * | o o o o +-------------------------------------+----------------------------------------- | Body weight * | o o o o o +-------------------------------------+----------------------------------------- | Allometry * | o +-------------------------------------+----------------------------------------- | Body colouration | o o +-------------------------------------+----------------------------------------- | Diatom film | o o o +-------------------------------------+----------------------------------------- | Isozyne analysis *+ | o +-------------------------------------+----------------------------------------- | DNA analysis *+ | o +-------------------------------------+----------------------------------------- | Heavy metal analysis **+ | o o o o o +-------------------------------------+----------------------------------------- | Organochlorine analysis **+ | o o +-------------------------------------+----------------------------------------- | Fat analysis **+ | o o o o +-------------------------------------+----------------------------------------- | Stomach contents *** | o o o o +-------------------------------------+----------------------------------------- | Weight | o o o o +-------------------------------------+----------------------------------------- | Species identification | o o o o +-------------------------------------+----------------------------------------- | Blubber thickness * | o o o o +-------------------------------------+----------------------------------------- | Weight of organs | o o +-------------------------------------+----------------------------------------- | Skull dimensions | o +-------------------------------------+----------------------------------------- | Parasites | o o o o +-------------------------------------+----------------------------------------- | Blood serum | o +-------------------------------------+----------------------------------------- | Hormone assay + | o o +-------------------------------------+----------------------------------------- | Mammary gland | o o o +-------------------------------------+----------------------------------------- | Milk sample | o o o o +-------------------------------------+----------------------------------------- | Ovary | o o o o +-------------------------------------+----------------------------------------- | Uterus | o +-------------------------------------+----------------------------------------- | Sperm in uterus | o o o o +-------------------------------------+----------------------------------------- | Foetus | o o o +-------------------------------------+----------------------------------------- | Testis and epididymis | o o o o +-------------------------------------+----------------------------------------- | 6th thoracic/3rd lumber vertebrae | o o +-------------------------------------+----------------------------------------- | Corpora counting | o o o o o +-------------------------------------+----------------------------------------- | Sex * | o o o o o o +-------------------------------------+----------------------------------------- | Mammary gland measurement | o o o +-------------------------------------+----------------------------------------- | Lactation | o o o +-------------------------------------+----------------------------------------- | Uterine horn | o +-------------------------------------+----------------------------------------- | Foetuses (total number) | o o o o +-------------------------------------+----------------------------------------- | Tessis/epididymis weights | o o o o o +-------------------------------------+----------------------------------------- | Sex ratio | o o o o o o o +-------------------------------------+----------------------------------------- | Pregnancy rate | o o o o o o +------------------------------------------------------------------------------- Note: * incl. foetus ** incl. stomach contents *** incl. lipid analysis of prey + tissue sample
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