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 The fly has bitten 
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Joined: Wed May 08, 2013 9:49 am
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Location: Port Elizabeth South Africa
Post The fly has bitten
hi all
we are going into winter..cold wet windy.
i am seeing less wild flies around.
i had a good run and learned a lot this last summer
i have hundreds of pupae to experiment with
i want to use the larvae in my fish diet
i do aquaponics and the larvae is good fish food
cost cutting


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File comment: the larvae bin
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File comment: 20 pupae
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File comment: 5 litres of pupae = 3kg
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File comment: 15 litres of pupae = 9kg
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Thu May 09, 2013 10:46 am
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Post Re: The fly has bitten
Hi francois glad to see you here and thanks for the photos. Please let everyone know where you're from.

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I Believe The Black Soldier Fly Has The Potential To Be A Beneficial Insect Second Only To Pollinating Bees


Thu May 09, 2013 10:50 am
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Post Re: The fly has bitten
Hi All
My larvae bin is a 210 l plastic drum cut in half
Nothing fancies..........no ramps or permanent cover except for the shade cloth
I have the shade cloth wrapped around the drum so the pupae can craw off over the side of the open bin and land in/on top of the shade net wrapped around bottom..
Now the pupae can crawl through the small holes in the netting and lots escape...they are seeding for next year.
I managed to collect in April this 9 kg you see here and there
are still hundreds of larvae and pupae left in my bins
going into winter I want to try and keep the cycle going
let's see


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Thu May 09, 2013 11:01 am
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Post Re: The fly has bitten
Excellent francois, welcome to the forum! We're looking forward to your work with black soldier fly larvae.

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*I'm not an entomologist, and much of what I write about BSF is an educated guess.


Thu May 09, 2013 2:39 pm
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Post Re: The fly has bitten
Hi All
thanks for the welcome
:D

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Tue May 14, 2013 11:35 am
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Post Re: The fly has bitten
Dr. Paul Olivier said, "Under ideal conditions, it takes about two weeks for the larvae to reach maturity. If the temperature is not right, or if there is not enough food, this period of two weeks may extend to six months."

So it should be easy enough to prevent immature larvae from maturing for up to six months by keeping them cool. Not cold, just cool enough to maintain their current condition. I assume that the technique depresses their metabolism enough to hold them in the same condition for quite a long time, at least until the weather warms up.

If anyone has any information on what the best "holding temperature" range might be, I would like to know.

Sue


Sun May 26, 2013 5:04 am
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Post Re: The fly has bitten
BelgianPup wrote:
Dr. Paul Olivier said, "Under ideal conditions, it takes about two weeks for the larvae to reach maturity. If the temperature is not right, or if there is not enough food, this period of two weeks may extend to six months."

So it should be easy enough to prevent immature larvae from maturing for up to six months by keeping them cool. Not cold, just cool enough to maintain their current condition. I assume that the technique depresses their metabolism enough to hold them in the same condition for quite a long time, at least until the weather warms up.

If anyone has any information on what the best "holding temperature" range might be, I would like to know.

Sue

From what I have been researching for over wintering, 50° - 55° f provides the slowest metabolic activity without risking stress. Depending on the age (I think they mean size) of the larva they can last up to 4 months.
Now you have to take into account that the info I have found comes from herpetological suppliers so they are talking about larva that have been possibly quarantined from food for days, cleaned, and placed in a non food media.


Sun May 26, 2013 10:56 am
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Post Re: The fly has bitten
I've overwintered black soldier fly larvae which were still in the juvenile stage after 5 months. I did this in a BSF composter outdoors in Georgia.

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Sun May 26, 2013 5:09 pm
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Post Re: The fly has bitten
last summer at the time when things were really going well with the bsfl I never had fish to feed them to. I basically only collected some craw of larvae to take through winter and the rest did what they would do in nature craw of and pupate for the next summer. One of the larvae bins stood next to a stack of bricks in my yard.....I moved the bricks on Saturday and this was in-between and under bricks


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File comment: dumped on worm casting
11h11

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File comment: the lot
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Tue Jul 30, 2013 11:08 am
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Post Re: The fly has bitten
I thought I will post my Aquaponic's system photos here as well.....bsf led me here
the fish are getting big and they look happy..eat well
I have managed to get some plants growing...I had a problem with old seeds
very few of first and second lot of planted seed came up
new seeds and better results
I decided against the indoors with bsfl for now...did one or two tests indoors...not very successful but I learned some...worth the experiment.
I have more than enough BSF larvae in summer to feed the fish not doing much so I need to give more attention on how I am going to keep larvae...freeze or dry for the winter months.


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File comment: first plant in system for 2013
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Tue Jul 30, 2013 11:15 am
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Post Re: The fly has bitten
Very nice francois! Thanks for sharing.

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*I'm not an entomologist, and much of what I write about BSF is an educated guess.


Tue Jul 30, 2013 11:32 am
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Post Re: The fly has bitten
after good rain last night this is what it looked like this morning around last year's black soldier fly bins
this is what I collected....


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Fri Aug 30, 2013 7:49 am
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Post Re: The fly has bitten
this is what last years bins look like inside
stopped feeding when it started getting colder
i closed and left to now
full of larvae pre pupae and pupae


Attachments:
File comment: larvae,pre pupae and pupae all together and alive
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File comment: inside under the compost
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File comment: untouched
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Fri Aug 30, 2013 8:03 am
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Post Re: The fly has bitten
Before.....
I took all the Swiss chard out of the system...not enough nutrients for the bigger plants and so many plants' only have a few small fish in the system


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File comment: bigger swiss chard
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Fri Aug 30, 2013 8:39 am
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Post Re: The fly has bitten
I left the beans, a few small Swiss chart plants and a few lettuces and introduced small basil seedlings coming up.


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File comment: left a few lettuces
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File comment: i left a few small swiss chard in the system
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File comment: the beans look ok so i left in system
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File comment: new basil seeds coming up
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Fri Aug 30, 2013 8:47 am
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Post Re: The fly has bitten
Very nice francois, thanks for sharing.

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*I'm not an entomologist, and much of what I write about BSF is an educated guess.


Fri Aug 30, 2013 6:48 pm
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Post Re: The fly has bitten
the black soldier fly are coming more active around here now, find them sitting around the worm bins outside... still a bit cold so they just sit hardly move....not active at all. The Black soldier fly pupae I have kept stored through winter is also becoming more active. more flies emerging...


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File comment: inside the office..every day a few flies...
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File comment: outside
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File comment: outside.....looked once and at the time between 10 and 12 flies were on their way out of the bin......
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Sun Sep 08, 2013 12:43 pm
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Post Re: The fly has bitten
francois, those don't appear to be black soldier fly, at least not the last two photos.

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Sun Sep 08, 2013 1:01 pm
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Post Re: The fly has bitten
Cephalochrysa rufibasis


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Cephalochrysa rufibasis.jpg
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Sun Sep 08, 2013 8:10 pm
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Post Re: The fly has bitten
PeteB wrote:
Cephalochrysa rufibasis

See the Unidentified 'Bronze' Soldier Fly (link) topic in the Range and Identification section. Do the larvae have zig-zag stripes?

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