Chaetognaths (arrowworms)

Abstract:

The arrowworms (phylum Chaetognatha) are an abundant and important component of the marine zooplankton community. Chaetognaths are ecologically important as carnivorous predators feeding primarily on zooplankton. Chaetognaths are streamlined and bilaterally symmetrical, with bodies divided into the head, trunk, and tail segments. Transvestibular pores that are located on the head of some chaetognaths parallel the vestibular ridge and then spread out laterally toward the base of the grasping spines. Chaetognaths can likely detect the difference between water turbulence and prey. Once the prey is detected, chaetognaths begin the attack by flexing and flicking their tail very rapidly. For many years, there was no evidence of a hemal system, and the transport of important nutrients from the intestine during digestion was a mystery. The sensory receptor organs for chaetognaths include the eyes, ciliary tufts along the body, and the ciliary loop. There has been much interest in the issue of regeneration in chaetognaths.

Año de publicación:

2021

Keywords:

• Arrowworms
• Marine zooplankton community
• Sensory receptor organs
• Vestibular ridge
• Transvestibular pores
• Grasping spines
• Hemal system

Fuente:

scopus