FISHERY BULLETIN: VOL. 71, NO. 2 



as museum specimens. Capture data and mu- 

 seum numbers are presented in Appendix Tables 

 1 and 2. Also, we examined 67 skulls of spotted 

 porpoise and 29 of spinner porpoise from 

 museum collections, for bone damage caused 

 by nematode infection. The museum specimens 

 were from the eastern tropical Pacific and are 

 listed below. Abbreviations used are: AMNH, 

 American Museum of Natural History, New 

 York; LACM, Los Angeles County Museum; 

 SDMNH, San Diego Museum of Natural His- 

 tory; USNM, United States National Museum, 

 Washington, D.C. 



S. gmffmani: AMNH130216, LACM27412, 

 27413, 27419, 27420, 27421, 27422, 27425, 

 27426, 27427, 27428, 27429, 27431, 27434, 

 31362, 31431; SDMNH20637, 21199; USNM- 

 261427, 261428, 261429, 261430, 261431, 

 261432, 261433, 261434, 395264, 395265, 

 395266, 395267, 395268. 395615, 395616, 

 395617, 395618, 395926, 395927, 395928, 

 395929, 395935, 395936, 395937, 395938, 

 396027, 396029, 396034, 396037. The 

 following LACM specimens, identified by 

 field numbers, had no museum numbers when 

 examined: GDF42, GDF57, MI563, RLB404, 

 RLB500, WAW42, WAW51, WAW55. The 

 following specimens, identified by field num- 

 bers are in the research collection at the 

 Southwest Fisheries Center (SWFC below), 

 La Jolla, Calif: CV160, JSL88. JSL89, JSL90, 

 JSL95, RICE65-1, RICE66-3, WFP7, WPSG- 

 01, WPSG02, WPSG03. 



S. cf. S. longirosMs: LACM27414, 27423, 

 27424, 27428, 27430, 27432, 27433; SDMNH- 

 21200, 21427; USNM395269, 395270, 395271, 

 395272, 395273, 395274, 395275, 395930, 

 395931, 395932, 395933, 395934, 396030, 

 396032, 396035; LACM field numbers GDF56. 

 RLB238, RLB405, WAW43, WAW50, WAW- 

 52, WAW53, WAW54, WAW58, WAW60; 

 SWFC field numbers CV240, CV241, CV245, 

 RICE65-149, RICE67-102. 



While rough-cleaning the porpoise carcasses 

 for skeletal preparation, we examined the 

 blubber, mesenteries, peritoneum, musculature, 

 blowhole region, maxillary sinuses, mammary 

 glands, and viscera (esophagus, stomachs, heart, 

 lungs, liver, spleen, kidneys, gonads, intestine) 



for larval and adult parasites. We searched 

 3-m lengths of the intestine at the duodenal 

 end, mid-length, and posterior end. Counts 

 of cysts in the blubber should be considered as 

 relative indices; we did not examine all the 

 blubber carefully. We filled out a data form for 

 each carcass indicating precisely which areas 

 had been checked for parasites. All worms and 

 cysts were fixed in Lavdowsky's (Formaline- 

 Acetic acid-Alcohol) or Bouin's fluid and stored 

 in 70% ethanol. Cestode, trematode, and acan- 

 thocephalan whole mounts were stained with 

 celestine blue B or Semichon's carmine. Speci- 

 mens were sectioned singly or in situ at 6, 

 8, and 10 jU and stained with Mayer's hema- 

 toxylin and eosin Y or Mallory's trichrome. 

 All material except nematode whole mounts 

 were dehydrated in ethanol, cleared in xylene, 

 and mounted in Piccolyte. Nematodes were 

 cleared and mounted in glycerine. Drawings 

 were made with the aid of a drawing tube. 

 Measurements are given in millimeters unless 

 otherwise stated. Average measurements are 

 given with ranges in parentheses. 



THE PARASITES 



Counts of parasites collected are tabulated 

 in Appendix Tables 1 and 2. 



Nematoda 



Auisakis siviplex (Rudolphi, 1809, det. Krabbe, 

 1878) 



This nematode was the most frequent para- 

 site collected during this study. The taxonomic 

 criteria used in identification of these speci- 

 mens were those presented by Davey (1971) 

 in his revision of the genus Aiiisakis. A. simplex 

 was found in the stomachs of both host species 

 and represents a new host report for both 

 S. graffmatu and S. lo}igiwstris. Anisakids 

 have been previously reported from other species 

 of Stenella (Delyamure, 1955; Kagei et al., 

 1967; Zam, Caldwell, and Caldwell, 1971; 

 Dailey and Brownell, 1972). 



^ Reference to trade names does not imply endorse- 

 ment by the National Marine Fisheries Service, NOAA. 



456 



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