Literaturdatenbank
Literaturdatenbank |
|
 |
|
Kam, Y.-C. (1994). Effects of simulated flooding on metabolism and water balance of turtle eggs and embryos. Journal of Herpetology, 28(2), 173–178.
Added by: Admin (21 Nov 2009 11:59:57 UTC) |
| Resource type: Journal Article BibTeX citation key: Kam1994 View all bibliographic details  |
Categories: General Keywords: Emydidae, Pseudemys, Pseudemys nelsoni, Schildkröten = turtles + tortoises, Zeitigung = incubation Creators: Kam Collection: Journal of Herpetology |
Views: 3/469
Views index: 9% Popularity index: 2.25% |
| Abstract |
|
Influences of simulated flooding on metabolism and water balance of Florida red-bellied turtle (Pseudemys nelsoni) eggs and embryos were investigated. Eggs were assigned randomly to a control (non-flooding) and three flooding groups: one, three, and six days of submergence. Flooding experiments were started at day 19 of incubation. Egg mass and oxygen consumption, V̇O2 of nine randomly selected eggs from each group were measured from day 19 to 43. Hatching success decreased and incubation time increased as the duration of submergence increased. No eggs in the 6-day submergence groups survived. Hatchling size did not vary among the control and submergence groups. For eggs that did not hatch, dry mass of dead embryos of the control and 1-day submergence groups was heavier than that of at day 19, and the age of dead embryos was estimated to be 42 days. In contrast, dry masses of dead embryos of the 3- and 6-day submergence groups did not differ from those of day 19. The embryonic V̇O2 of the control group increased during incubation. In contrast, embryonic V̇O2 of submergence groups was suppressed during submersion. Eggs submersed in water for one and three days took up more water than those buried in sand, but opposite results were found when eggs were submersed in water for six days. Eggs of the 1-day submergence group continued to increase mass but eggs of the 3- and 6-day submergence groups started to lose mass following removal from water. Results show that simulated flooding significantly influenced water balance, hatching success, and embryonic metabolism of embryos.
Added by: Admin |