Munida constricta A. Milne-Edwards, 1880

Vazquez-Bader, Ana Rosa & Gracia, Adolfo, 2016, Diversity and distribution of Chirostyloidea and Galatheoidea (Decapoda, Anomura) in the Southern Gulf of Mexico, ZooKeys 612, pp. 1-30 : 7-8

Taxon classification Animalia Decapoda Munididae

Munida constricta A. Milne-Edwards, 1880

Material examined.

BATO stn. 53, 3 males. BIOREPES 1: stn 6, 1 male; stn 42, 3 males, 1 female; stn. 47, 4 males, 2 females, 1 ovigerous female; stn 50, 2 males, 1 female; stn 54, 2 males, 3 females, 1 ovigerous female; stn 55, 8 males, 5 females. BIOREPES 2 stn 4, 1 male; stn. 11, 1 male; stn 12, 1 male, stn. 25, 13 males, 2 females; stn. 31, 3 males; stn. 37, 4 males. COBERPES 3 stn. B2, 2 males.

Remarks.

We collected 62 individuals in the sectors SSW, SSE, and ESE; from 305.3 to 814.0 m depth. In Tabasco, this species was found off Carmen y Machona Lagoon; Yucatán at N of Alacranes Reef, and N of Celestún; and in Campeche, off Términos Lagoon. The highest abundance was found in summer (93.5%) at a 321.4-717.8 m depth range. Munida constricta was mainly reported in sector SSE (79.1%, 536.0-717.0 m). The overall sex ratio was 3.2 M: 1 F, χ 2 = 16.516, p <0.0001. Females exhibited larger mean CLx = 14.1 ± 3.02 (min.7.6- max. 22.5 mm) than males CLx = 13.7 ± 2.516 (min. 2.0, max. 21.7 mm). Only the CL size of males presented statistically significant differences (ANOVA: F (2; 45) = 6.08; p = 0.00); the smallest sizes were found at shallower depths, whereas larger ones were observed at deeper depths (Fig. 4). The sex ratio in summer (3.8 M: 1 F) was significantly different from the expected proportion ( χ 2 = 19.931, 1 degree of freedom, two-tailed, P = 0.0001). The two ovigerous females (CL = 13.6-17.6 mm) were collected in autumn. We found only one female (CL = 14.43 mm) infested with bopyrid. The material collected represents the first records in the sectors SSW, SSE, and ESE.