(Alaska Pacific University) While the aquaculture of corals has greatly improved with recent technological advances in water parameter regulation, flow control, and lighting, a lag persists in physiological examination of the health of coral specimens. A cost-friendly, pulse amplitude modulated (PAM) fluorometer (Junior- or JR-PAM) was used to examine photosynthetic activity of corals within recommended aqua-culturing temperature ranges. A total of 24 coral fragments were used, representing four species: Acropora sp., Montipora digitata, Pavona decussatus, and Seriatopora hystrix. Exposure to typical, aqua-culturing temperature treatments (22, 24, 26, and 28°C) for three week periods revealed significant restrictions of photosynthesis at lower- and higher-end temperatures. Both maximum quantum yield (FV/FM) and maximum, relative electron transport rate (rETR) were significantly different across the four-interval temperature range. The efficacy of the JR-PAM for in situ coral research was also examined, and usefulness for determining coral productivity was assessed.
There are numerous species of azooxanthellate stony corals out there, but more than likely the only ones you'll ever come across in the hobby are known as the sun corals, some of which are called orange cup corals. This umbrella of a common name is used for several species of the genera Tubstraea and Dendrophyllia, and these are the subject from here on out.
New research by marine biologists from Wageningen University has shown that extracoelenteric feeding on zooplankton can far exceed internal feeding in terms of prey captured and nutrients acquired. The take home message from this research is that corals are voracious predators, perfectly adapted to capturing unsuspecting prey from the water column with their cnidocyte-bearing tentacles.
Corals keep mystifying and challenging us, whether we are aquarists, divers or scientists. Our understanding of corals and their symbiotic organisms has been a long road, and knowledge of their biology is ever increasing. Even today, marine biologists are working hard to unravel the complex physiology of these amazing animals. The question however is: how do they do that?
A few years ago when I was working on my book about giant clams, I was lucky enough to get a tour of the CV Dinar coral and giant clam aquaculture facility in Indonesia. I'm sure a lot of hobbyists have heard of the "farms" in the Pacific, but I figured I'd give you something of a virtual tour of the place and show you a bit about how things are done there. It was quite interesting to say the least.
'Breeding Berghia Nudibranches' is a new book by Dene Banger that explains how to set up and maintain a system for breeding Aiptasia devouring Berghia nudibranchs, sell them for fun and profit, and scale the system based on demand.
Craig shares his 335 gallon reef system with us this month. His 247 gallon peninsula-style main display - with elegantly minimalistic aquascaping - and frag tank are home to an impressive assortment of vibrant corals and fishes
To our knowledge, this is the first report of P. lutea's daytime spawning as early as July in Hawaiian waters. The take home message is clear - not all corals spawn at night or do our observations of P. lutea's spawning behaviors correspond to any particular lunar phase. In fact, our observations suggest spawnings are random during periods of warmer water.
Why should anyone be interested in a rather obscure subject such as this? After all, we know that coral animals (hosts) and zooxanthellae (symbionts) generally have a mutually beneficial relationship. New information may make us re-think the symbiosis between Symbiodinium and coral animals.
It is hoped that this article not only serves as a useful guideline for locating, harvesting, and maintaining specimens for the home aquarium, but furthermore adequately promotes the return of these beautiful creatures to their rightful place of eminence in the marine aquarium hobby.
The Pittsburgh Zoo and PPG Aquarium has succeeded in breeding a sea lion pup for the second year in a row!
Russ goes behind the scene at Todd Melman’s coral farming facility, Coral Reef Systems.
AmericanReef.com talks with Bob Snowden about Troubled Waters, a Caribbean exhibit at the PPG Aquarium in Pittsburgh.
AmericanReef.com talks with Todd Melman about coral farming.
June 06, 2009 — Bubble Tip Anemones eating. This is the right half of a 210 gallon AGA Aquarium.
After being in the marine aquarium hobby and trade for almost 20 years, and diving many times around Indonesia, I've had a lot of experience with this particular anemone.
October 16, 2008 — Wired Science gets the scoop on how the elaborate coral exhibit at the California Academy of Sciences was created, and how the museum introduced the coral into it's new environment.
Media Review: The Complete Illustrated Breeder’s Guide to Marine Aquarium Fishes by Matthew L. Wittenrich
Should someone interested in breeding marine ornamental fish read this book? Read the review to find out.
Never forget, regardless of how difficult it may be, it's better to be patient and thoroughly check out a potential purchase, rather than acting hastily and having something die in your aquarium.
The description of this tanks sounds like a list of things not to do when setting up a reef tank: it has no live rock, no live sand, minimal filtration, no additives, the water is never tested, 100% water changes and yet this 5 gallon glass box is one of the most attractive, successful and least demanding reef tanks that I have ever set up.