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tammy.horton

Deep%20sea%20life%20of%20Tanzania_2016_reduced.pdf?bcsi_scan_2687365ababd2c82=0&bcsi_scan_filename=Deep%20sea%20life%20of%20Tanzania_2016_reduced

- Arthropoda - Decapoda -

Cerataspis sp.

Arthropoda (Phylum) > Malacostraca

(Class) > Decapoda (Order) > Aristeidae

(Family)

This large decapod is from the family

Aristeidae. It is perhaps more familiar to

marine biologists as Plesiopenaeus sp. but

recent studies have shown that it the adult

animal of a larval stage known as Cerataspis

sp.

It is widely distributed in the deep sea and

was frequently observed at all the sites off

Tanzania, especially when the baited time-lapse camera was deployed. It is a large animal,

up to 20 cm in length, which has previously been recorded off Tanzania and elsewhere

in the western Indian Ocean.

Scavenging amphipods

Arthropoda (Phylum) > Malacostraca (Class) > Peracarida

(Superorder) > Amphipoda (Order) > Lysianassoidea

(Superfamily) > Eurytheneidae (Family)

The pink animal shown feeding at the baited camera experiment

on the right is a large amphipod crustacean.

It is approximately 5-6 cm in length. Large amphipods

like this are likely to be Eurythenes sp., a widely distributed

genus and common member of the scavenging assemblage.

Most of the scavenging amphipods attending

the baited camera experiments were much smaller than

those visible the images here, their presence only detected

as dots on the image. More familiar amphipods are the

sand-hoppers, which are often seen on the strand line of

beaches (they are usually 1-2 cm in length).

Amphipods are important scavengers in the deep sea.

They will appear in their thousands and rapidly devour

bait placed at the seabed, or a natural food-fall. They were

seen in very large numbers in photographs from the baited time-lapse camera deployments

off Tanzania. Baited traps deployed alongside the camera at a number of the sites

captured many species of amphipods and the related (peracarid) isopods. These samples

provide valuable new distribution records for numerous species.

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