Munida valida Smith, 1883

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 : 12-13

Taxon classification Animalia Decapoda Munididae

Munida valida Smith, 1883

Material examined.

BATO stn. 10, 1 ovigerous female; stn. 35, males 1, females 1, ovigerous females 1; stn. 48, 1 male, 1 female; stn. 49, 2 males, 1 female; stn. 53, males 2, females 3. BIOREPES 1 stn. 42, 3 males, 3 females; stn 47, 5 males, 5 females; stn 48, 2 males, 1 female; stn 50, 3 males; stn 54, 1 male, 3 females; stn 55, 9 females. BIOREPES 2 stn. 10, 1 female; stn.11, 3 males, 1 ovigerous female; stn. 25, 2 males, females 2; stn. 37, 1 male, 1 female. BIOREPES 3 stn. A12, 6 males, 2 ovigerous females; stn. A13, 2 males; stn. A24, 2 males; stn. B1, 1 ovigerous female; stn. B5, 1 female, 1 ovigerous female; stn. C7, 2 males. COBERPES stn. A3, 2 males; stn. A12B, males 2; stn. B2, 1 male; stn. B12, 1 female; stn. B13, 1 male, 1 female; stn. B15, 1 male, 1 female; stn. Ω 1, 2 males; stn. Ω 6, 2 males; stn. Ω 7, 2 females; stn. Ω 8, 1 male; stn. Ω 14, 1 male; stn. Ω 15, 1 female. COBERPES 2011 stn. B2, 1 male; stn. C2, 1 female; stn. D11, 9 males, 8 females; 7 ovigerous females. COBERPES 3 stn. B11, 2 males; stn. α 5, 2 males; stn. α 6, 1 male; stn. α 7, 1 female; stn. α 10, 2 males, 1 female, 1 ovigerous female. COBERPES 4 stn A5, 1 female; stn C35B, 1 female; B12B, 1 female; stn B 13, 2 males, 1 female; stn B 14, 2 males, 1 female; stn 30 B, 2 males.

Remarks.

This species was frequent in the catches (i.e., 140 individuals), and was practically present in all sectors of the southern Gulf of Mexico: N Celestún, Holbox, Progreso, N Alacranes, Yucatán; Carmen y Machona Lagoons, Tupilco Lagoon, San Pedro and San Pablo Rivers, Tabasco; Coatzacoalcos, Veracruz; 359-1048 m. However, the greatest number was collected in the SSE (n = 44, 536.0-700.0 m) and SSW (n = 42, 317.5-780.0 m) sectors, particularly off rivers and lagoons. The major percentage of organisms (52.9%) was reported in summer (359.0 to 770.0 m), whereas less one was recorded in autumn (10.7%). Ovigerous females mean CL (x = 29.8 ± 7.770, min. 15.4, max. 41.7) was larger than males mean CL, (x = 27.3 ± 7.629 min. 9.7, max. 40.2), and females mean CL (x = 26.2 ± 6.471 min. 11.0, max. 44.0). The smallest size of males and females were found mainly at deeper strata. The ANOVA results were not significant for males CL: [F depth (5; 65) = 1.22, p = 0.31; F season (2, 68) = 0.07, p = 0.93], and females CL: [F depth (3; 50) = 1.05, p = 0.37; F season (2, 51) = 1.31, p = 0.27]. The sex ratio in autumn (2.4 M: 1 F) showed significant differences ( χ 2 = 4.48, p = 0.03).

Ovigerous females (n = 15) were present in all seasons and almost in all sectors (except WNW) in a depth interval of 510 to 642 m. Four males (CL = 24.5-40.2 mm) and four females (CL = 21.1-44.4 mm) were infected with rhizocephalan. Also one male (CL = 24.3 mm) and one female (CL = 32.5 mm) were infected with bopyrid.