SLOW DEVELOPING DEMERSAL EMBRYOS AND LARVAE OF ANTARCTIC SEA STAR ODONTASTER VALIDUS

被引：78

作者：

PEARSE, JS

机构：

[1] Department of Biological Sciences, Stanford University, Stanford, California

来源：

MARINE BIOLOGY | 1969年 / 3卷 / 02期

关键词：

D O I：

10.1007/BF00353429

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The early development of Odontaster validus at McMurdo Sound, Antarctica, is indirect and includes equal cleavage, a convoluted blastula, a free-swimming coeloblastula, a gastrula, and a feeding bipinnaria larva. Development differs from that of other asteroids in two respects: (1) The developmental rate is extremely slow; blastulae form nearly 2 days after fertilization, gastrulation begins after 7 days, and the bipinnaria develops in about 40 to 55 days. The slow developmental rate appears to be only partly related to the low environmental temperature (-1.5°C). (2) The embryos and larvae are largely demersal. Such behavior may be an adaptation to keep the larvae out of antarctic surface waters, as does brooding in many other polar echinoderms. © 1969 Springer-Verlag.

引用

页码：110 / &

共 40 条

[11] GEMMILL JF, 1915, J MICROSC SCI, V61, P27
[12] GREER DL, 1962, PACIF SCI, V14, P280
[13] HARDY A, 1960, P R SOC B, V152, P641
[14] Horstadius S., 1939, PUBBL STAZ ZOOL NAPO, V17, P222
[15] JUST EE, 1939, BASIC METHODS EXPERI
[16] Larsen E. J., 1937, P550
[17] LITTLEPAGE JL, 1938, BIOLOGY ANTARCTIC SE, V5, P1
[18] Madsen F. J., 1961, Galathea Report, V4, P177
[19] MCWHINNIE MA, 1964, BIOLOGY ANTARCTIC SE, V1, P63
[20] Mortensen T., 1931, Kongelige Danske Videnskabernes Selskabs Skrifter (9), V4, P1

← 1 2 3 4 →