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Chaetozone PAP sp605

Edited by gljpaterson on Fri, 01/09/2009 - 11:02
Family: 
Cirratulidae
Genus: 
Chaetozone
Species binomial name, or informal name: 
Chaetozone PAP sp605
Authority: 
Eulogio Soto & Gordon Paterson
Material Examined: 
27 individuals examined. Porcupine Abyssal Plain (Challenger 79, May 1991 4 individuals; Challenger 111, April 1994 3 individuals; Discovery 222, September 1996 7 individuals; Discovery 226, March 1997 9 individuals and Discovery 229, July 1997 4 individuals).
Voucher: Ocean Basin: 
NE Atlantic
Voucher: Cruise/Expedition: 
BENGAL programme
Voucher: Location: 
48.00º N -16.00 º W
Voucher: Depth: 
4835 m
Voucher: Repository: 
NHM London
Description: 

The specimens with incomplete body, the largest specimen recorded 2.3 mm long and 0.2 mm wide for 18 chaetigers approximately. Thoracic body shape changes between uniform and swollen in anterior region. Prostomium pointed, widely conical with blunt tip. Semi elongate buccal region 1.5 times as long as broad. Two specimens with peristomial region wider than thoracic region. Palps less than 2 branchial widths to ch1. Branchiae scars were not observed. Thoracic region 9-10 chaetigers in length
Thoracic notochaetigers and neurochaetigers all simple and short capillaries of 1-2 chaetiger in length or shorter; chaetae, 3 chaetigers in length, from chaetiger 4 were observed in one specimen. Long ‘bottle-brush’ chaetae not observed. Thoracic acicular spines absent. Incomplete abdominal region with acicular spines present in some specimens. Pygidium not observed.

Methyl green staining: Uniform. Prostomium not stained.

Habitat: This species was found within the sediment at a depth of 0-5 cm.

Remarks: 

This specie differs from other Chaetozone species described in the prostomium tip shape, width of peristomial region about thorax, buccal region length, length of capillaries and absence of ‘bottle-brush’ chaetae. Unfortunately, the absence of abdominal region in the majority of specimens examined did not allow a better description.

Location

United States
48° 0' 0" N, 16° 0' 0" W
See map: Google Maps
AttachmentSize
PAP sp6 Plate 2.jpg105.17 KB

Comments

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