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Results 1 - 10 from 12 for photoperiod time in 0.429 sec.

Journey North Talk: 2nd Grade Teacher Shares Ideas for Mystery Class
This 2nd grade teacher shares ideas about calculating photoperiod with her students. She offers to share the worksheets ... My second graders and I found that computing the photoperiod time was difficult and complicated for them with their ... photoperiod time means in fractions so that they can correctly represent the time on the graph that Journey North provided. The whole process is time ...
learner.org

Captive Marine Fish Rearing
Whichever way you follow, note down the time ... (easier to siphon off the debris), and painted black (you still need to control the photoperiod at this point, not to mention the "gunk" is more visible), with a standpipe in ...
www.netpets.com

US Fish and Wildlife Service, Office of Migratory Bird Management, Shorebirds
(Kerlinger, 1995). Shorebirds are closely associated with wetland areas but do ... species to species, birds can pursue different prey in the same area at the same time without competing with each other. Because of varying bill lengths, each bird species food source ...
fws.gov

Reptiles: Egg-eating snakes (Dasypeltis)
Temps were 28-30° C in the day, dropping to 25° at night. Photoperiod was about 14 hours light, 10 hours dark (set by a timer). He fed the ... imports, quail eggs. After acclimation, they would take about six or seven eggs at a time. Eggs were left in for at least 2 nights before discarding. Hatchlings were fed finch ...
herper.com

Vagrant & Winter Hummingbird Banding
Page Banding winter hummingbirds across the Carolinas takes considerable time and--with gas prices as they are--significant expense. ... -throated Hummingbirds from migrating. Hummer migration is stimulated by photoperiod, so as days become shorter in fall the birds ... of Page Banding winter hummingbirds across the Carolinas takes considerable time and--with gas prices as they are--significant expense. ...
hiltonpond.org

Journey North Talk: journey north
U.S. Naval Observatory to find our photoperiod. We spend time Monday recording our data and also graphing the data about the mystery classes. I ...
learner.org

The babies were noticeably smaller than those of the first female who was much larger, 19". Used the same cooling period, photoperiod, and incubation methods ... .2.0 adults are housed in a room 4m X 3m with natural photoperiod through fiberglass roof. Natural photoperiod and temperatures. No copulation observed. One obviously gravid female was removed and on ...
pondturtle.com

USGS Patuxent Wildlife Research Center SIS Project
An understanding of the cranes circannual hormone rhythms as they relate to reproductive behavior, photoperiod, and stress will offer valuable information. Recent development of fecal steroid enzyme immunoassays (Lasley ... collected fecal samples during the egg laying cycle to see if we can predict time of ovulation and oviposition. Because of possible food poisoning problems, we bioassay all crane ...
www.pwrc.usgs.gov

Roe Deer,reproduction in the female roe deer
May or early June. Between the time of the rut and late December the embryo remains at ... out a maternal signal to say 'that's delayed implantation over, time you (the embryo) woke up' which is why it has ... Read Abstract The pre-oestrus signal, variations in pregnancy length and photoperiod manipulation of pregnant roe deer does (Capreolus capreolus) Roger T. Lambert1, ...
roedeer.com

Abstracts
The pre-oestrus signal, variations in pregnancy length and photoperiod manipulation of pregnant roe deer does (Capreolus capreolus) Roger T. Lambert1, Paul A. ... the embryo is genetically programmed to commence development at a given time. Alternative hypotheses include a role for photoperiod or intra-uterine prolactin. 1. Lambert et al, (1998) Proceedings ...
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