49
Table 1 cant .. Sex ratio estimates for natural populations of clam shrimps. Sample types are: adults from
field collections (field) and laboratory-reared adults from sediment samples (lab.). Numbers in brackets refer
to original data tabulated in Appendix I.
Taxon
Sample
size
Leptestheriidae
Eoleptestheria ticinensis
? ~50
(Balsamo-Crivelli)
Eoleptestheria yanchowensis
15
Shu, Han & Liu
Leptestheria biswasi Tiwari
15
Leptestheria compleximanus (Packard)
258
Leptestheria compleximanus
43-92
Leptestheria cortieri Daday
20
Leptestheria dahalacensis (Riippel)
?
Leptestheria mayeti (Simon)
86
Leptestheria titicacae Harding
25
Leptestheria tucumanensis Halloy
41
Leptestheria sp. 1
?
Leptestheria sp. 2
?
Leptestheriella gigas Karande
354
& Inamdar
Maghrebestheria maroccana Thiery
>50
Sewellestheria sambharensis Tiwari
86
Limnadiidae
Eulimnadia agassizii Packard
>202
Eulimnadia astraova Belk
104
Eulimnadia antlei Mackin
80
Eulimnadia belki Martin
18
Eulimnadia brasiliensis Sars
23
Eulimnadia brasiliensis
Eulimnadia braueriana (Ishikawa)
22
Eulimnadia colombiensis Roessler
40
Eulimnadia cylindrova Belk
>84
Eulimnadia dahli Sars
>200
Eulimnadia diversa Mattox
438
from a few males.) Since Mathias' review, the only
well-established exception to bisexuality in these three
families has been Cyzicus gynecia (Mattox), no males
of which ever have been reported. Roessler (1994b)
reports one case of an undescribed Leptestheria from
Colombia that also apparently lacks males. At the time
%
Sample
References
male
type
field
Scanabissi Sabelli
Tommasini,1990
47
field
Shu et al., 1990
67
field
Tiwari, 1965
53
lab
[12]
14-84
field
Richard, 1895; Martin &
Cash-Clark, 1993
55
field
Monod, 1969
50-75
field
Botnariuc, 1945; Scanabissi
Sabelli & TommilSini, 1990;
Brendonc, et aI., 1989
50
field
Jaume, 1989
84
field
Harding, 1940
68
field
Halloy, 1979
0
field
Roessler, 1995b
~50
field
Roessler, 1995b
45
field
Karande & Inamdar, 1961
50
field
Thiery, 1988
62
field
Tiwari, 1966
0
field
Zinn & Dexter, 1962;
Smith, 1992
0
field
Belk,1989
8
lab
Belk,1972
17
field
Martin, 1989
0
field
Cesar, 1990
<12
lab
Sars, 1902
0
field
Yoon & Kim, 1992
0-5
field
Roessler, 1989
0-10
field
Belk, 1989; Brendonck et
aI., 1990
I
field
Sars, 1896b; 1902
12
field
Mattox, 1937; 1939; 1953a;
b; c .. f:, Belk, 1989
of Mathias' review only a few males of Cyclestheria hislopi were known - the individuals reared by
Sars (1887) from a mud sample from northern Australia and a single specimen found among hundreds
of field-collected individuals by Daday (1926). Since
then males have been found in natural populations