All issues
Volume 18, Issue 4
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
Shigeru SHIMURA1984 Volume 18 Issue 4 Pages 179-183
Published: March 31, 1984
Released on J-STAGE: October 26, 2009
JOURNAL FREE ACCESSA new species of marine cercaria, possibly belonging to the family Acanthocolpidae, was found in the digestive gland of the spindle shell Fusinus perplexus and the specific name Cercaria itoi is proposed. C. itoi is a distome and biocellate cercaria with a long simple tail, five pairs of penetration gland cells, I-shaped excretory vesicle, 66 flame cells on each side and peculiar structures of comma- to sausage-shaped minute bodies, probably cystogenous glands, filled in the hindbody posterior to the acetabulum. The cercaria develops in redia, but its maturation of the cercaria occurs in the digestive gland of the host, after the immature cercariae leave the redia.View full abstractDownload PDF (3115K) -
Katsuhiko KAWANO, Takashi AOKI, Tadatoshi KITAO1984 Volume 18 Issue 4 Pages 185-190
Published: March 31, 1984
Released on J-STAGE: February 10, 2010
JOURNAL FREE ACCESSThere was no mortality in ayu (Plecoglossus altivelis) which had mean body weight of 4.2 or 9.2 g during the rearing period after direct immersion in underground water containing lyophilized formalin-killed cells or sonicated cells of Vibrio anguillarum. A high level of protection against vibriosis was found in fish immersed directly in 0.94 or 9.4 (wet) g/l lyophilized or sonicated bacterin. The efficacy was no different for fish with a mean body weight of 4.2 g immersed for 1, 3, or 10 min in 1 (wet) g/l lyophilized bacterin. The duration of protective immunity in fish with a mean body weight of 8.0 g lasted 60 days after direct immersion in 0.94 or 9.4 (wet) g/l of lyophilized bacterin.View full abstractDownload PDF (684K) -
Shigeru SHIMURA, Ren KUWABARA1984 Volume 18 Issue 4 Pages 191-197
Published: March 31, 1984
Released on J-STAGE: October 26, 2009
JOURNAL FREE ACCESSA new mytilicolid copepod, Trochicola japonicus, parasitic in the intestine of the short neck clam, Tapes philippinarum, from Lake Hamana (semi-enclosed coastal bay) is described for both female and male.View full abstractDownload PDF (2826K) -
Shigeru SHIMURA, Minoru ASAI1984 Volume 18 Issue 4 Pages 199-203
Published: March 31, 1984
Released on J-STAGE: October 26, 2009
JOURNAL FREE ACCESSArgulus americanus WILSON 1902 was found on the bowfin, Amia calva, imported from Wisconsin, U. S. A. Eggs laid in a plastic container hatched in 35-37 days at 15°-16°C. Hatched larvae were experimentally infected to a cichlid, Tilapia mossambica. The larvae kept at 23°-26°C grew from 0.6-0.7 mm in total length on Day 0, to 2.5-3.5 mm on Day 20, to 4.5-5.8 mm on Day 40, and a single female larva grew to 6.9 mm on Day 70. Females laid eggs on Day 49 and Day 53. Male specimens on Day 7 and Day 26 are illustrated.View full abstractDownload PDF (2092K) -
Parasites of the saury, Cololabis saira (BREVOORT)-I.Kazuya NAGASAWA1984 Volume 18 Issue 4 Pages 205-208
Published: March 31, 1984
Released on J-STAGE: October 26, 2009
JOURNAL FREE ACCESSThe parasitic copepod, Pennella sp., was found on the saury, Cololabis saira (BREVOORT), from the western and central North Pacific Ocean and the Okhotsk Sea in 1981 and 1982. It is supposed that the parasite population in the western Pacific area has recently increased.View full abstractDownload PDF (1054K) -
Tsuyoshi BABA1984 Volume 18 Issue 4 Pages 209-219
Published: March 31, 1984
Released on J-STAGE: October 26, 2009
JOURNAL FREE ACCESSDownload PDF (1257K) -
1984 Volume 18 Issue 4 Pages 223-238
Published: March 31, 1984
Released on J-STAGE: October 26, 2009
JOURNAL FREE ACCESSDownload PDF (1279K)
- |<
- <
- 1
- >
- >|