What is labial palps?
What is labial palps?
labial palp 1. In some Mollusca, one of a pair of flap-like folds at the end of each tentacle by which food is transported to the mouth. 2. One of the pair of jointed, sensory structures carried on the labium of the mouth of an insect. They articulate with the part of the labium known as the prementum.
What is a labial palps used for?
function in bivalve nourishment The paired labial palps in the mantle cavity are used in feeding. The outer palp on each side bears a long, extensible proboscis with a ciliated groove that collects organic material, which is then sorted by the inner pair and outer pair of palps.
Do clams have labial palps?
In clams like the one pictured, the labial palps are close to the anterior adductors muscle. The labial palps are two flap-like structures that are close to the mouth. Notice the structure of the gills. The gills are used to strain plankton out of the water, as well as to remove oxygen from the water.
Where are the bivalve labial palps located?
Paired symmetrical labial palps are located at the anterodorsal part of the visceral mass under the hood formed by the fusion of the mantle lobes at the anterior most region of the mantle isthmus.
Do mollusks have a proboscis?
A barbed radular tooth fires through the proboscis, which is an extension of the mouth. It pierces the prey, paralyzing it with venom and preventing its escape. The cone snail “swallows” the prey by engulfing it with its proboscis. In this way cones stalk and capture worms, molluscs, and even fish.
What is the function of palps?
Palps play a role similar to human lips and tongues. Their sensory hairs allow them to feel the texture of potential food items. Their chemoreceptors allow them to “taste” plants. This helps the grasshopper choose between plants that might by good to eat and ones that might be inedible or poisonous.
What is meant by palps?
Definition of ‘palps’ 1. either of a pair of sensory appendages that arise from the mouthparts of crustaceans and insects. 2. either of a pair of tactile organs arising from the head or anterior end of certain annelids and molluscs.
Why are clams called filter feeders?
Clams are known as filter feeders because of the way they eat their food. Since they have no heads or biting mouthparts, they have to feed in an unusual way. They pull water — which also contains food particles — in through one of their syphons and into their gills.
Do Mussels eat plankton?
mussels are natural filters, feeding on algae, plankton, and silts, they help purify the aquatic system.
What is a butterfly tongue called?
Butterflies don’t have tongues, they have a proboscis which many people think of as a tongue but it’s more like having your mouth extended into a long tube. They do have some taste buds on their proboscis and some on their antenni as well, but most of the tastebuds are focused on their feet.
What do you mean by labial palp in Mollusca?
labial palp 1. In some Mollusca, one of a pair of flap-like folds at the end of each tentacle by which food is transported to the mouth. 2. One of the pair of jointed, sensory structures carried on the labium of the mouth of an insect.
Which is part of the mouth carries the labial palp?
labial palp 1. In some Mollusca, one of a pair of flap-like folds at the end of each tentacle by which food is transported to the mouth. 2. One of the pair of jointed, sensory structures carried on the labium of the mouth of an insect. They articulate with the part of the labium known as the prementum.
How are the labial palps used in carnivorous species?
Carnivorous species often have a proboscis capable of great extension, either invaginable or contractile. The paired labial palps in the mantle cavity are used in feeding.
How are bivalves different from other mollusks?
The morphology and anatomy of modern bivalves have been much altered from those of ancestral mollusks, which had a distinct anterior end with a mouth and a posterior end with an anus (Figure 1). Consequently, as you look at the specimen, note how various features (gill, foot, mantle) have been modified for a sedentary, filter-feeding lifestyle.
