January 30, 2018 - This means that male maxima x female noae and female maxima and male noae clams were both successful in producing viable hybrid offspring. Giant clam spawning!

October 10, 2019 - A two by two factorial cross between sympatric giant clam species, the fluted giant clam, Tridacna squamosa (S) and the boring clam, Tridacan crocea (C), yielded hybrids that were fast growing (characteristic of the S) and had brightly colored ...

November 24, 2021 - This concept is contradicted by hybrids, which are offspring resulting from combining the qualities of two species, breeds, varieties, or genera through sexual reproduction. Over time, I’ve learnt that the species concept can be viewed as a continuum spectrum spanning from reproductive isolation with no interbreeding to unlimited interbreeding (i.e. high gene flow), rather than absolutes. Mariculture studies on the giant clams have been ongoing for decades, but studies investigating hybridisation are far and few.

October 1, 2018 - Aquaculture production of giant clams is directed primarily at aquarium markets, and hybridisation offers an opportunity to diversify available products. Here we report on the successful inter-specific hybridisation of Tridacna maxima and T. noae, ...

January 23, 2020 - A recent video by Coral Clam details the process of inducing the giant clam to spawn, obviously starting first with having broodstock clams of the right size and age, and then inducing them to spawn with a specially prepared injection. There’s some guidelines as how to how long to let the small clams release sperm, how long to let the large ones release eggs, and how long to let the pairs of gametes mix for optimal fertilization success. Last week we learned that the specific hybrid crosses that result from the hybridization of giant clam species is highly dependent on which species is the mother (egg donor), and which one is the father (sperm donor).

The Aquacultured Hybrid Maxima Clam is an amazing achievement in aquaculture, highlighting the attractive features of both Tridacna maxima and Tridacna squamosa clams. Clam collectors and aficionados will quickly notice the pronounced scalloping ...

August 29, 2016 - The SquamoCea is a new hybrid Tridacna giant clam cross between T. squamosa and T. crocea. You may recall several years ago the Maxea clam hybrid between crocea and maxima clams made a big splash with amazing mantles and some really unique patterns.

July 12, 2011 - Tridacna ‘maxea’: New giant clam hybrid of Tridacna maxima x T.

March 18, 2026 - The following is an example of an ideal diet for Giant Clam that offers them 100% nutrition and satisfaction. You may find other ratios that work! Hybrid animals can be produced by mixing DNA with that of other animals as follows:

February 26, 2026 - Living up to its name, the giant clam is the largest living bivalve mollusk and can be identified by the iconic zig-zag shaped mantle of their shells. Learn more.

Tridacna gigas is truly the Giant Clam of legend. This species grows rapidly to over 4 feet in length and has been recorded to weigh more than 700lbs!

3 weeks ago - One of a number of large clam species native to the shallow coral reefs of the South Pacific and Indian oceans, they may weigh more than 200 kilograms (440 lb), measure as much as 120 cm (47 in) across, and have an average lifespan in the wild of more than 100 years. They also are found off the shores of the Philippines and in the South China Sea in the coral reefs of Malaysia. The giant ...

January 14, 2020 - Also, the authors report a suspiciously strong similarity between the hybrid's shell characteristics and the characteristics of the conspecific fertilization pool that matches the maternal species. Frankly, this is what I would expect is self fertilization occurred in the hybrid treatment.

November 15, 2019 - Like corals, the giant clam lives in partnership with tiny plantlike algae (called zooxanthellae) that reside inside the clams’ tissues. And as with corals, the arrangement helps both creatures.

October 29, 2022 - Click to expand... Scott, Your clams are doing great. Growing like gang busters, and beautiful. Also, IMO, there are clear documentations that there are hybrids. Not easy and the vibrable offspring are much less according to the writing of some breeders. The genetic contribution is also not even in term of egg and sperm contributor.

May 4, 2026 - Underwater plants include Bull Kelp forests, Sargassum beds, Sea Lettuce patches, and Red Algae growth. Giant Green Anemones and Strawberry Anemones add color to reef builds. Tube Sponges and Tube Worms create alien-looking formations. The Giant Clam occasionally produces Pearls used for Pearl Blocks and Black Pearl Blocks.

Aquaculture of giant clams was developed in the Pacific region in the 1970s and 1980s, linked to community farming and efforts to develop commercial opportunities, particularly high-value exports. Giant clam industries did not develop as expected, but nonetheless many countries still have giant clam aquaculture programmes.

November 5, 2020 - At such times most folks just throw up their hands and declare that a hard-to-ID specimen in a hybrid between the two species, but after doing a lot of searching, reading, and asking clam farmers questions I’m still far from convinced that these two species can/do hybridize.

February 3, 2026 - The Derasa Clam is the most widely available and hardy of the Tridacna clams. This species is one of the largest of the "giant" clams, and grows rapidly, reaching a maximum size of approximately 20 inches.

July 30, 2013 - Skip to content · When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures · Log in · Sign up