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I’ve been putting research into the natural life cycles of 'moon crabs'. I have just acquired a young pair. I am not absolutely positive of the species, but it is the genus Gecarcinus, most likely Gecarcinus quadratus.

They’ll be in a 40 gallon breeder. For now it’ll be a pretty standard moon crab setup, but will be modified to experiment with inducing breeding/egg release as I learn more.

I was looking for more information/testimonies regarding the captive breeding and rearing of these. One paper I found attempted to raise them from eggs (unsure if these were captive bred or wild caught), only one survived to megalopa and it died before becoming a juvenile. The methods used to raise them are not elaborated on.

There are a number of environmental factors I would need to recreate, I've been brainstorming how I could achieve it. Mimicking a rainy season with Asbolus beetles is easy enough, but I imagine it’s fairly different with these larger and smarter crabs. I’m unsure if the seasonal use of a fogger could be adequate, if I have no better ideas I will attempt this, open to suggestions!

The one I’m really lost on is recreating tides. In theory I’ve thought of some kind of timed water pump that adjusts the water levels, but I have absolutely no idea how I could accomplish this. I am also unsure if mimicking waves would be necessary.

Then there’s raising the zoea. My initial thought some kind of kreisel tank, there are some available on the market for raising jellyfish ephyrae. I need to do further research in sourcing adequately small plankton to feed zoea.

At some point they will need to surface and move to land. I am unsure how to enable this while still maintaining the appropriate environment for larvae. My thought is I could move them to a semi-terrestrial setup once they are megalopae (maybe using some sort of sifter that could catch the megalopae but not the zoea), since this seems to be when they start heading for shore? At the very least they are capable of self propulsion, so they wouldn’t need the kreisel afaik. I could just keep them in the semi aquatic tank and give them however much time they need to surface.

I eagerly welcome any advice! I’ve heard there is one instance of captive breeding and raising being achieved, but I cannot find the firsthand documentation of this.
Any updates on what your tutor said?
Best Answer • 3 days ago in Finance (Other Fields Homework Help) by Ranim_Saleem
A 2 percent chance of default means that the probability of not defaulting is, P=98%. The promised yield is 1.5 percent over the 60-day life of the paper, and the T-bill yield is 1 percent. With V = $1,000, the par value amount:

$1,000 =
Recover = = = 765
Thus, investors expect to recover $765 for every $1,000 invested, or 76.5% if Collingwood were to default on the commercial paper.

When Collingwood Corp. issued its 60-day commercial paper the promised yield was 9%, whereas the 60-day T-bill yield was 6%. There is a 2% chance that Collingwood will default on this debt. If investors were willing to pay the full par value amount ($1,000) to purchase the paper, how much do they expect to recover in the event of a default?
Best Answer • 3 days ago in Finance (Other Fields Homework Help) by Sirangelou
SourceAdvantageDisadvantage
Commercial paperShort maturity date (30 or 60 days)Corporation may default (i.e., credit risk)
Bankers' acceptancesAvailable to firms with less than stellar credit ratingMore costly than commercial paper
Short-term loansEasy to arrangeFixed payments have cash flow impacts


List three sources of finance available to corporations in the money market. List one major advantage and one major disadvantage to each source
Best Answer • 3 days ago in Finance (Other Fields Homework Help) by lizwalker
The failure of Lehman Brothers in September 2008 led to a major fear of the insolvency of banks. Banks guarantee bankers acceptances and have major outstanding levels of short-term debt. The rush to liquidate short-term assets and the drying up of market liquidity led to a major spike in interest rates. Central banks all over the world provided banks with enough liquidity to honour their commitments.

Explain the implication of the failure of Lehman Brothers on short-term debt yields, and how it was remedied.
Best Answer • 3 days ago in Finance (Other Fields Homework Help) by rion20000
The rating is supposed to be based on structural rather than cyclical factors. Holders of long-term debt are expected to hold the debt through both the high earnings periods and low earnings periods and the debt rating for those debt issues should reflect the long-term creditworthiness of the firm.

You have observed that the credit ratings of firms are very stable over time. However, you have also observed that the earnings of firms are cyclical. Explain how this is possible when credit ratings are supposed to reflect the credit risk of the firm's debt.
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