skip to main content
Ngôn ngữ:
Giới hạn tìm kiếm: Giới hạn tìm kiếm: Dạng tài nguyên Hiển thị kết quả với: Hiển thị kết quả với: Chỉ mục

Comparing biochemical changes and energetic costs in gastropods with different developmental modes: Crepipatella dilatata and C. fecunda

Chaparro, O. ; Lincoqueo, L. ; Schmidt, A. ; Veliz, D. ; Pechenik, J.

Marine Biology, 2012, Vol.159(1), pp.45-56 [Tạp chí có phản biện]

ISSN: 0025-3162 ; E-ISSN: 1432-1793 ; DOI: 10.1007/s00227-011-1788-2

Toàn văn sẵn có

Trích dẫn Trích dẫn bởi
  • Nhan đề:
    Comparing biochemical changes and energetic costs in gastropods with different developmental modes: Crepipatella dilatata and C. fecunda
  • Tác giả: Chaparro, O. ; Lincoqueo, L. ; Schmidt, A. ; Veliz, D. ; Pechenik, J.
  • Chủ đề: Biochemistry ; Mollusks ; Marine Biology ; Evolutionary Biology ; Morphology ; Population Genetics
  • Là 1 phần của: Marine Biology, 2012, Vol.159(1), pp.45-56
  • Mô tả: The Chilean gastropods Crepipatella dilatata and C. fecunda have different development modes: brooding and direct development in C. dilatata and brooding and planktotrophic development in C. fecunda . Unlike many other congeneric invertebrate species pairs, recent genetic evidence suggests that C. fecunda may have evolved from C. dilatata . To explore the changes involved in this unusual evolutionary path, this study examined the biochemical, energetic, and morphological characters during early development of both species. Mean egg size was slightly smaller for the direct-developing species C. dilatata , and initial energy content was lower—by about 27%—for eggs of that species. In both species, protein content in the eggs was the principal biochemical component. Although females of C. fecunda produce 180 times more eggs than C. dilatata , females of C. dilatata invest 20 times more energy in each of their offspring, through nurse eggs; their embryos have approximately eight times more energy at hatching and about 5 times more energy when they enter the benthos, despite a long planktonic feeding period in the larvae of C. fecunda . Evolutionary switching between modes of development in these species is reflected in shifts in maternal energy investment.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0025-3162 ; E-ISSN: 1432-1793 ; DOI: 10.1007/s00227-011-1788-2

Đang tìm Cơ sở dữ liệu bên ngoài...