Pre-Leptocephalic Larvae of the Japanese Eel

Yamamoto, Kayoko; Yamauchi, Kouhei; Morioka, T.

doi:10.2331/suisan.41.29

Cited by 15 publications

(15 citation statements)

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“…myriaster larva was similar to A . japonica 4,5,9,10 . However, after the mouth opened, the oil droplet moved to the midpoint of the yolk sac in C .…”

Section: Discussionmentioning

confidence: 98%

“…cinereus have no pigment just after hatching, 3,7 those of A . japonica have a little pigmentation on the tail 4,9 . The specific features of the embryonic development of C .…”

Section: Discussionmentioning

confidence: 99%

“…myriaster was similar to that of A . japonica 4,5,9,10 in pigmentation, which was limited to the eyes and the tail. In addition, C .…”

Section: Discussionmentioning

confidence: 99%

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Development of embryos and larvae in the common Japanese conger Conger myriaster

Horie¹,

Utoh²,

Yamada³

et al. 2002

Fisheries Sci

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Development of embryos and larvae in the common Japanese conger Conger myriaster was observed after artificial fertilization. Eggs were obtained from females matured artificially by hormone injections and milt was obtained from males matured naturally. Fertilized eggs were kept in seawater at 12–14°C. The first cleavage occurred at 4 h, epiboly began at 24 h, the embryonic body was formed at 38 h and hatching occurred at 84 h after insemination. Newly hatched larvae were approximately 2.5 mm (total length) and similar to those of Anguilla japonica in terms of external features. The mouth and anus opened on the 7th day after hatching. Pigments began to appear at the tip of the tail on the 10th day. The total length of the larvae reached approximately 8 mm on the 11th day. Eye pigmentation began on the 14th day. One larva lived for 19 days without food.

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“…myriaster larva was similar to A . japonica 4,5,9,10 . However, after the mouth opened, the oil droplet moved to the midpoint of the yolk sac in C .…”

Section: Discussionmentioning

confidence: 98%

“…cinereus have no pigment just after hatching, 3,7 those of A . japonica have a little pigmentation on the tail 4,9 . The specific features of the embryonic development of C .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Development of embryos and larvae in the common Japanese conger Conger myriaster

Horie¹,

Utoh²,

Yamada³

et al. 2002

Fisheries Sci

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“…Neither Umezawa et al (1989) nor Yamamoto et al (1975) were able to maintain larvae after yolksac absorption, so their size-at-age data may underestimate growth. Few otolith-derived data exist on leptocephalus growth rates.…”

Section: Discussionmentioning

confidence: 99%

Age and growth of tarpon, Megalops atlanticus, larvae in the eastern Gulf of Mexico, with notes on relative abundance and probable spawning areas

et al. 1992

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SynopsisLeptocephali were collected in June 1981 and July 1989 over the continental shelf and slope of the Florida west coast. Tarpon larvae ranged 5.5-24.4mm standard length (SL) and were the second most abundant leptocephalus species. Sagittae examined with compound microscopes and scanning electron microscopy had increments that were presumed to be formed daily. Increment counts made using the two microscopic techniques were not significantly different. Estimated ages ranged 2-25 days with a growth rate (5 standard error) of 0.92 + 0.04 mm d-l. The least squares linear regression equation SL = 2.78 + 0.92 (age in days) best described the relationship between estimated age and length. Adult tarpon appear to undergo a substantial spawning migration from inshore areas frequented during spring and summer to offshore spawning grounds. Spawning occurs during May, June, and July, although the spawning season may be of greater duration.

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“…[2][3][4][5] Although fertilized eggs and pre-leptocephalus larvae have often been obtained from eels with hormonal treatments, there have been no reports of feeding and growth of pre-leptocephalus larvae. This report is the first to describe the ingestion of rotifers by eel larvae.…”

mentioning

confidence: 99%