I think this is true of "cheese mites" also; the little acarids that
contaminate everything.  But I wouldn't swear to it.

Dac

----- Original Message -----
From: "Marilyn Steiner" <Marilyn.Steiner@agric.nsw.gov.au>
To: <a.p.beckerman@stir.ac.uk>; <acarology@nhm.ac.uk>
Sent: Wednesday, February 27, 2002 6:58 PM
Subject: Re:mite ovaries
 

> Dera Andrew:
>
> I am sure there are many people more qualified than I am to respond to
this (I
> was actually interested to see their comments) but since they haven't,
I'll put
> in my two-bits worth. My research with several phytoseiids suggests that
there
> is a fixed number of eggs that can be laid over a lifetime. Typically,
there is
> an early sharp peak in eggs laid/day and then it tails off gradually until
you
> get eaters but not breeders. For two species, we deprived females of males
after
> initial mating for a couple of weeks until they stopped laying eggs, then
put
> another male in. Most resumed egg laying, with the total per lifetime only
> marginally below that where a male was present throughout. As I fed them
well, I
> can't say if giving them deficient food would see the oviposition period
spread
> over a longer period (perhaps they wouldn't live long enough to lay them
all),
> or even if eggs might be resorbed before being laid.
>
> Cheers
>
> Marilyn

Dera Andrew:

I am sure there are many people more qualified than I am to respond to this (I
was actually interested to see their comments) but since they haven't, I'll put
in my two-bits worth. My research with several phytoseiids suggests that there
is a fixed number of eggs that can be laid over a lifetime. Typically, there is
an early sharp peak in eggs laid/day and then it tails off gradually until you
get eaters but not breeders. For two species, we deprived females of males after
initial mating for a couple of weeks until they stopped laying eggs, then put
another male in. Most resumed egg laying, with the total per lifetime only
marginally below that where a male was present throughout. As I fed them well, I
can't say if giving them deficient food would see the oviposition period spread
over a longer period (perhaps they wouldn't live long enough to lay them all),
or even if eggs might be resorbed before being laid.

Cheers

Marilyn

Dear all - I recently posted a question about whether mites in general have
a fixed reproductive output.  I mentioned that we were working with
Sancassania and received one response: that Sancassania are baby making
machines. We are highly aware of this phenomenon... ;)

However, I am still interested in whether there are a fixed number of eggs
that can be produced in a female's life-time: towards the end of life, does
egg number decline because oocytes/oogonia are limited in number or because
"reproductive effort" is declining with age (and fatigue).  Any advice or
suggestion for books/papers would be appreciated.

cheers
andrew
 

----------------------------------------------------------
Dr. Andrew Beckerman
Institute of Biological Science
University of Stirling
Stirling FK9 4LA
+44 (0)1786 then w-467808 f-464994
(APB is not responsible for anything below this)

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Dear Acarology Scientist

I am looking for the natural predator of the snakemite (Ophionyssus
natricis) or/and lizard (Hirstiella tronbidiiformis) or other insects or predatory
mites that will feed on these mite species.

We are group of Herpetologists and Vetenarians and are looking for new
methodes to protect reptiles and cages free of this blood feeding parasits.

We will make some test with predatory mites used for Agricuture (Hypoaspis).
If you know anything about predatory mites that feed on a wide range of
different mites, maybe including the snake mite or lizard mite, please contact
me.

Regards,
A.J

--
GMX - Die Kommunikationsplattform im Internet.
http://www.gmx.net

Dear listers -

a rather general question that might be family/species specific: do mites
mature with a fixed number of oocytes? - i.e. is there a fixed number of
eggs that can be laid by a female? (We are working with Sancassania berlesei).

cheers
andrew
----------------------------------------------------------
Dr. Andrew Beckerman
Institute of Biological Science
University of Stirling
Stirling FK9 4LA
+44 (0)1786 then w-467808 f-464994
(APB is not responsible for anything below this)

--
The University of Stirling is a university established in Scotland by
charter at Stirling, FK9 4LA.  Privileged/Confidential Information may
be contained in this message.  If you are not the addressee indicated
in this message (or responsible for delivery of the message to such
person), you may not disclose, copy or deliver this message to anyone
and any action taken or omitted to be taken in reliance on it, is
prohibited and may be unlawful.  In such case, you should destroy this
message and kindly notify the sender by reply email.  Please advise
immediately if you or your employer do not consent to Internet email
for messages of this kind.  Opinions, conclusions and other
information in this message that do not relate to the official
business of the University of Stirling shall be understood as neither
given nor endorsed by it.
 
 

To whom it may concern

Is there anyone who cultivates the storage mite Euroglyphus maynei? We are using E.m. for allergy testing, and our ordinary deliverer has problems in delivering material to us. We would therefore be interested in buying pure culture E.m., sifted whole bodies, and preferably grown on media not containg wheat, from someone who can deliver about 15 g material per year.
If you think you can fulfil these criteria, or know of anyone who can, please contact me

Kindest regards, yours sincerely
Hans Öman
MIAB, Box 881, 751 08 Uppsala, SWEDEN
hans.oman@vialen.se

Dear Acarologists:

For those who have not yet been informed, the second announcement for the
International Congress of Acarology, in Merida, Mexico,  has been posted on
the conference website: http://www.ibiologia.unam.mx/xi_ica/

The deadline for early abstracts is looming (20 March).

Cheers,
Heather

Hello everyone.

I'm a third-year student trying to do some work on Ornothodoros moubata.  However, for unknown reasons, our colony has kicked up its heels and died at a crucial point in the study.

Is there anyone in the uk particularly that has a colony and might be able to help me out?  Or, does anyone know someone working with them that's not on the list that they may be able to put me in touch with?

Any help would be gratefully received,

Thanks

Lucy Robinson
 

There are many e-mail lists on various entomological topics, both general
and specific. The Entomology Index of Internet Resources run by John VanDyk
at Iowa State University can serve as a gateway to most of them:
http://www.ent.iastate.edu/list/ , click on the "Mailing Lists" link.

Enjoy!

Glen

********************************
Glen A. Scoles, Ph.D.
Research Entomologist
USDA, ARS, Animal Disease Research Unit
3003 ADBF, Washington State University
PO Box 646630
Pullman, WA, 99164-6630
Office: (509) 335-6337
Lab: (509) 335-6347
FAX: (509) 335-8328
E-mail: scoles@vetmed.wsu.edu
********************************

Hello everybody!
First I want to send my congratulations to you and especially to Dr.
Zhi-Qiang Zhang for having created such an useful discussion network
like the acarology list.  Now my question: Does anybody of you know a
similar network for insects. I have a very special question about the
cuticle of aphids.  Who can give me information??
--
*********************************************************
*  Dr.Andreas KAHRER
*  Bundesamt und Forschungszentrum fuer Landwirtschaft
*  (Federal Office and Research Center for Agriculture)
*  Institut fuer Phytomedizin
*  Abteilung fuer Gemuese- und Zierpflanzenbau
*  Spargelfeldstrasse 191
*  A-1226 WIEN
*  OESTERREICH - AUSTRIA
*  Tel:    +43/1/732 16/5162
*  Fax:    +43/1/732 16/5194
*  E-mail: akahrer@bfl.at
**********************************************************

Special offer for individual subscribers during Spring 2002 (1 Feb. to 30 April)

Order/Renew Syst. Appl. Acarol. Vol. 7 (2002) and get back volumes free*

*only postage/packaging fee of 8.50 USD per volume is required for delivering back volumes to you; back volumes are free only for subscribers of Vol. 7 (2002) until stocks are depleted.
______________________________________________
Send order to the Treasurer of SAAS:

Dr Ting-Kui QIN
Plant Biosecurity, Biosecurity Australia
Department of Agriculture, Fisheries and Forestry
GPO Box 858
Canberra, ACT 2601
Australia
E-mail : Tingkui.Qin@affa.gov.au
_____________________________________________

I want to order Systematic & Applied Acarology Vol. 7 (2002) at 35 USD (including surface mail postage).

I want to receive
___ Vol. 1 (1996) ___ Vol. 2 (1997) ___ Vol. 3 (1998)
___ Vol. 4 (1999) ___ Vol. 5 (2000) ___ Vol. 6 (2001)
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I enclose  35 USD  + ( __  x  8.50 USD) = ___ USD.

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Orders must be placed before the end of April 2002 to receive back volumes free.

If you already paid for Vol. 7 (2002), you can also receive back volumes free by sending just postage/packaging fee of 8.50 USD per volume

A printer friendly version in PDF is enclosed for your use.
 
 

Dr Zhi-Qiang Zhang
Research Scientist (Acarologist)
Landcare Research
P.B. 92170
Auckland
New Zealand

phone [0064-9] 815-4200 ext 7069
Fax (0064-9) 849-7093
E-mail  zhangz@landcare.cri.nz
webpage   www.nhm.ac.uk/hosted_sites/acarology/zhang/

Dear colleagues,
Herewith information regarding two new papers recently published.

Coetzee, L. 2001. New species of the Family Lohmanniidae (Acari,
Oribatida) from South Africa. Navorsinge van die Nasionale Museum,
17(3):53-67.

Coetzee, L. 2001. Lohmanniidae species (Acari, Oribatida) from the
Holocene deposits at Florisbad, South Africa. Navorsinge van die Nasionale
Museum 17(5):125-134.

They are available on-line from the SAAS e-reprint library at
www.nhm.ac.uk/hosted_sites/acarology/saas/e-library/c.html

If anyone would like a hard copy of these papers, please let me know.

Best wishes
Louise Coetzee

----------------------------------------------------------
Louise Coetzee
Dept of Acarology
National Museum
P.O. Box 266
Bloemfontein 9300
South Africa
Tel: + 27 51 4479609
Fax: + 27 51 4476273
www.nasmus.co.za