Consumers (Putative)

Consumers are organisms that are incapable of producing their own food and have to derive nutrients from other organic matters.

The following is a list of representative species from each group of consumer that can be found in Hong Kong.

 

Meiofauna

Meiofauna is a collection of small benthic invertebrates (between 63 and 500 microns in size) that live in marine sediment.

 

Nematodes (slender worms) and copepods (small crustaceans) are two main groups of meiofauna that are found in our samples.

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An assortment of meiofauna with detritus particles

Photo taken under a stereomicroscope

by Michael Ma

 

 

Macrofauna

Macrofauna are organisms larger than 500 microns. They can be classified into the following groups:

Deposit Feeders

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Boleophthalmus pectinirostris

Photo taken at Mai Po

by Joe Lee

Classification: fish

Common name: great blue-spotted mudskipper

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Macrophthalmus tomentosus

Photo taken at Mai Po

by Zhaoliang Chen

Classification: crab

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Metaplax longipes

Photo taken at Ting Kok

by Michael Ma

Classification: crab

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Tubuca arcuata

Photo taken at Mai Po

by Joe Lee

Classification: crab

Common name: bowed fiddler crab

 

Leaf-Eaters

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Parasesarma affine

Photo taken at Shui Hau

by Joe Lee

Classification: crab

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Parasesarma ungulatum

Photo taken at Lai Chi Wo

by Joe Lee

Classification: crab

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Parasesarma bidens

Photo taken at Mai Po

by Zhaoliang Chen

Classification: crab

 
 

Grazers

Littoraria%20ardouininana%20on%20Kandeli
Littoraria ardouiniana

Photo taken at the West coast of Guangdong province, China

by Joe Lee

Classification: gastropod

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Neripteron violaceum

Photo taken at Mai Po

by Yan Ping Loo

Classification: gastropod

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Onchidium hongkongensis

Photo taken at Mai Po

by Michael Ma

Classification: gastropod

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Cerithidea moerchii

Photo taken at Lai Chi Wo

by Joe Lee

Classification: gastropod

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Monodonta labio

Photo taken at Ting Kok

by Michael Ma

Classification: gastropod

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Ellobium chinensis

Photo taken at Mai Po

by Yan Ping Loo

Classification: gastropod

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Planiliza subviridis

From Shui Hau

Classification: fish

Common name: greenback mullet

Filter Feeders

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Anomalodiscus squamosa

Photo taken at Ting Kok

by Michael Ma

Classification: bivalves

Common name: false cockle

 

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Geloina erosa

Photo taken at Shui Hau

by Joe Lee

Classification: bivalves

Common name: mangrove clam

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Marcia hiantina

Photo taken at Ting Kok

by Michael Ma

Classification: bivalves

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Saccostrea cucullata

Photo taken at Ting Kok

by Michael Ma

Classification: bivalves

Common name: hooded oyster, Natal rock oyster

 

Predators

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Periophthalmus modestus

Photo taken at Mai Po

by Joe Lee

Classification: fish

Common name: shuttles hoppfish, shuttles mudskipper

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Tachypleus tridentatus

Photo taken at Shui Hau

by Joe Lee

Classification: horseshoe crab

Common name: Chinese horseshoe crab, Japanese horseshoe crab, tri-spine horseshoe crab

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Terapon jarbua

From Shui Hau

Classification: fish

Common name: crescent perch, crescent grunter

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Metopograpsus frontalis

Photo taken at Ting Kok

by Michael Ma

Classification: crab

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Thalamita crenata

Photo taken at Ting Kok

by Michael Ma

Classification: crab

Common name: mangrove swimming crab

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Laomedia astacina

Photo taken at Ting Kok

by Michael Ma

Classification: shrimp

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Panaeus merguiensis

From Mai Po

Classification: shrimp

Common name: banana shrimp

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Palaemon carinicauda

From Mai Po

Classification: shrimp

Common name: ridgetail white prawn

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Platalea minor

Photo taken at Mai Po

by Joe Lee

Classification: bird

Common name: black-faced spoonbill

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Ardea cinerea

Photo taken by Joe Lee

Classification: bird

Common name: grey heron

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Tringa ochropus

Photo taken at Mai Po

by Joe Lee

Classification: bird

Common name: green sandpiper

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Recurvirostra avosetta

Photo taken at Mai Po

by Joe Lee

Classification: bird

Common name: pied avocet

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Chroicocephalus ridibundus

Photo taken at Mai Po

by Joe Lee

Classification: bird

Common name: black-headed gull

 

Decomposers

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Auricularia fuscosuccinea

Photo taken at Mai Po

by Yan Ping Loo

Classification: fungus

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Inocybe spp.

Photo taken at Mai Po

by Joe Lee

Classification: fungus

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Polyporales (order name)

Photo taken at Mai Po

by Zhaoliang Chen

Classification: fungus

 
 

Omnivores / Scavengers

Omnivores are organisms that have a mixed diet of both plant and animal origins, and are able to survive on either one of them. The following organisms are also opportunistic scavengers.

Scylla paramamosain
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Photo taken at Mai Po

by Yan Ping Loo

Classification: crab

Common name: mud crab

Oreochromis aureus
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Photo taken at Mai Po

by Joe Lee

Classification: fish

Common name: tilapia

**Invasive species

Tilapias were first introduced into Hong Kong for aquaculture. However, those individuals that escape from fish farms become an invasive species and pose a threat to the surrounding habitat, due to their high growth rate, omnivorous diet, and lack of natural predators.