Ecology of Galathealinum — Adegoke 
559 
Southward (1962) concluded that the limiting 
factor in pogonophoran distribution is low 
water temperature rather than absolute depth. 
The geographic, latitudinal, and bathymetric 
distribution of the recorded species of 
Galathealinum discussed below corroborates the 
views of Kirkegaard and Southward. 
The geographic and bathymetric distribu- 
tion of the four species of Galathealinum and 
of the undetermined species from southern Cali- 
fornia (Hartman and Barnard, I960; Hartman, 
1961) are shown in Table 1. Figure 1 shows 
a plot of the minimum depth of occurrence 
of the species against latitude of occurrence. 
The data show that there is a direct correlation 
between these two parameters. The species oc- 
cupy increasingly greater depths the lower the 
latitude. 
The approximate values of bottom tempera- 
tures at the localities where the pogonophoran 
species discussed here were collected are shown 
also in Table 1. Temperature values were ob- 
tained from published sources, especially from 
the work of Emery (1954, I960), Emery and 
Rittenberg (1952), Kramp (1957), Manner 
F 
\ 
\ 
\ 
\ 
h \ 
50 
40 
20 
<0 
\ + Habitable 
\ 
\ 
\ Depths. 
\ 
+ 4 #^ 
\ 
Uninhabitable 
Depth: 
J L 
X + 2 
+\ 
\ 
\ 
0 >1000 2000 3000 4000 5000 
Depth in Meters 
Fig. 1. Relationship between latitudinal position 
and minimum depth range of species of Galatheali- 
num. 
TABLE 1 
Geographic and Bathymetric Distribution of Species of Galathealinum Kirkegaard, 1956 
DEPTH IN 
BOTTOM TEMP. 
SPECIES 
LOCATION 
LATITUDE 
LONGITUDE 
METERS 
°C 
Galathealinum 
Thetis Bay, Herschell 
69°32'N 
138°57'W 
36 
ca. 0° 
arcticum 
Island, Yukon, 
Alaska 
Galathealinum 
brachiosum 
west coast of Canada 
west coast of Oregon 
54°23'N 
42°40'N 
134°4TW 
124°29'W 
1233-2605 
0.61°- 0.72° 
Galathealinum 
East Cortes Basin, 
32°2TN 
1 18°40'10"W 
1872 
3-13° 
sp. indet. 
southern California 
32°16'30"N 
118°27'55"W 
1801 
West Cortes Basin, 
32°21'N 
119°14'W 
1924 
southern California 
32°l4'N 
1 19°15'W 
1923 
3.3° 
32°1TN 
1 19° 18'W 
1668 
San Diego Trough 
32°19'N 
117°26'55"W 
1420 
— 
Long Basin, 
31 o 55'09"N 
119°10'W 
1833 
2.70° 
southern California 
Galathealinum 
Gulf of 
14°28'N 
95°09'W 
3529-3557 
1.5° 
mexicanum 
Tehuantepec, 
Mexico 
12°20'N 
91 0 51'W 
3596-3642 
1.5° 
Galathealinum 
Celebes Sea 
1°50'N 
119°30'E 
5090-5110 
o 
00 
fO 
bruuni 
