Reproductive biology of galatheoid and chirostyloid (Crustacea: Decapoda) squat lobsters from the Gulf of Mexico Author Kilgour, Morgan J. Author Shirley, Thomas C. text Zootaxa 2014 3754 4 381 419 journal article 46649 10.11646/zootaxa.3754.4.3 96aabdb2-1be6-484b-a6aa-34d046a24d01 1175-5326 229435 D6C44F9E-6EF7-411B-8C49-132AA77AB1A5 Munidopsis sigsbei ( A. Milne-Edwards, 1880 ) Munidopsis sigsbei has previously been reported as Galathodes sigsbei and Munidopsis sigsbeyi ( Baba et al. 2008 ) . Its reported distributional range is from the Gulf of Mexico to Brazil in depths of 659 to 1784 m (Milne- Edwards 1880 ; Chace 1942 ; Pequegnat & Pequegnat 1970 ; Tavares & Campinho 1998 ). Specimens used in this analysis were in the published distributional range in depths of 500 to 2000 m and were collected in every month ( Fig. 13 G). One hundred fifty-nine males (CW from 2.5 to 13.1 mm ), 68 non-ovigerous females (CW from 3.8 to 12.0 mm), and 83 ovigerous females (CW from 6.3 to 13.3 mm ) were measured. Males and females were not significantly different in size (t-test, df = 308, t = -1.804, p = 0.072); ovigerous females were significantly larger than non-ovigerous females (t-test, df = 149, t = -4.061, p<0.001). Ovigerous females were observed in February and May through November. Females had between one and 50 eggs , and average egg diameters ranged between 1.14 mm and 2.09 mm . Fecundity was correlated with CW for M. sigsbei (R2 = 0.287, p <0.001) ( Fig. 14 A), but average egg size was not correlated with CW (R2 = 0.002, p = 0.702).