Aspects of the reproductive biology of the shortfin mako, Isurus oxyrinchus (Elasmobranchii Lamnidae), in the southeastern region of Brazil
Braz. j. biol
; 62(2): 239-248, May 2002. ilus, tab, graf
Article
in En
| LILACS
| ID: lil-326194
Responsible library:
BR1.1
RESUMO
Uteri from four pregnant females and two newborn of shortfin mako, Isurus oxyrinchus, were collected in the southeastern region of Brazil, during September, October, and November of 1993 and 1994. All embryos were near-term with developing dentition and inner organs. Total length ranged from 64.5 to 72.0 cm, and the maximum number of embryos observed in a litter was 20. These observations further confirmed oophagy as a form of nutrition in this species, and its periodicity. The presence of teeth in the embryos' stomachs suggest that tooth replacement begins in the uterine phase
Full text:
1
Index:
LILACS
Main subject:
Sharks
/
Embryo, Nonmammalian
Limits:
Animals
/
Pregnancy
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
Braz. j. biol
Journal subject:
BIOLOGIA
Year:
2002
Type:
Article