[Babase] Matured BY dates for females
Susan Alberts
alberts at duke.edu
Sun Aug 27 15:55:10 EDT 2006
Thanks, I've got it now.
Susan
On Aug 27, 2006, at 3:28 PM, Catherine Markham wrote:
> Hi Susan,
>
> Yes, I think you've got it. Taking 178 days prior to the birth of
> a female's first infant was what Jeanne and I just did for
> assigning matured BY dates (at least in most cases - sometimes
> different logic was used to determine the matured BY date, but all
> that is written-up on a case by case basis in the Babase change log).
>
> If a female already had a matured date and that matured data did
> not fall during a period of spotty monitoring (Jeanne gave me dates
> for each study group to query), then I didn't question the matured
> date or its status.
>
> Thanks for pointing out the need to clarify that - let me know if I
> still didn't explain it well.
>
> Catherine
>
>
> Susan Alberts wrote:
>> Thanks Catherine. All of this was clear except one comment that
>> I've asked about below.
>>> All other females were investigated on a case by case basis. For
>>> most, the earliest date indicating sexual maturity was 178 days
>>> (average gestation) prior to the birth of their first documented
>>> offspring.
>>>
>> Are you saying that you found females in the database that had
>> maturity dates coresponding to 178 days before their first birth?
>> Or are you saying that this was the method you used to assign "by"
>> dates to females that were known to have matured but at an unknown
>> date? In other words, are you saying that the rule for assigning a
>> "by" date to a female was (1) if she was known to have at least
>> one pregnancy and (2) we don't know her exact menarche date, then
>> (3) she was given a by date coresponding to 178 days before the
>> birth o9f the first known offspring?
>> Thanks,
>> Susan
>> -----------------------------------------------
>> Susan Alberts, Dept. Biology, Duke University, Durham NC 27708.
>> Phone 919-660-7272, Fax 919-660-7293. alberts at duke.edu
>> _______________________________________________
>> Babase mailing list
>> Babase at www.eco.princeton.edu
>> http://www.eco.princeton.edu/mailman/listinfo/babase
> _______________________________________________
> Babase mailing list
> Babase at www.eco.princeton.edu
> http://www.eco.princeton.edu/mailman/listinfo/babase
-----------------------------------------------
Susan Alberts, Dept. Biology, Duke University, Durham NC 27708. Phone
919-660-7272, Fax 919-660-7293. alberts at duke.edu
More information about the Babase
mailing list