Synopsis
Analysis of variance on mean dimensions of samples of larval Anisakis simplex from Atlantic salmon (Salmo salar) and Atlantic herring (Clupea harengus harengus) indicated that highly significant morphometric differences existed. Subsequent analyses were simplified by using only the total body length of the larvae which was easily measured. Also the multiple range tests indicated that length showed the highest degree of heterogeneity. No difference (P > 0.2) was detected in the lengths of larvae from male and female salmon and most analyses suggested there was no change in length of the larvae with an increase in age of the host. There was, however, significant heterogeneity in the length of larvae in salmon which had spent more than one winter at sea and this heterogeneity was related in some way to the geographic localities in which the samples were taken. Possible reasons for these differences and the use of morphometric variants of Anisakis as a biological indicator are discussed.
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Beverley-Burton, M., Pippy, J.H. Morphometric variations among larval Anisakis simplex (Nematoda: Ascaridoidea) from fishes of the North Atlantic and their use as biological indicators of host stocks. Environ Biol Fish 2, 309–314 (1977). https://doi.org/10.1007/BF00005998
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DOI: https://doi.org/10.1007/BF00005998