Glyphocrangon spinicauda A. Milne-Edwards, 1881

Vázquez-Bader, Ana Rosa & Gracia, Adolfo, 2013, Crangonidae and Glyphocrangonidae (Decapoda; Caridea) of the Southern Gulf of Mexico, Zootaxa 3669 (3), pp. 367-383 : 378

Glyphocrangon spinicauda A. Milne-Edwards, 1881

( Figs. 11 , 12 )

Glyphocrangon spinicauda A. Milne Edwards, 1881: 3 (type locality: off St. Christopher, West Indies, 17°19.27’S, 62°50.30’W, 450 m).— Pequegnat 1970: 110.— Holthuis 1971: 295, figs 6, 7.— Coelho & Ramos 1972: 157.—Ramos- Porto & Coelho 1998: 342.— Ramos-Porto & Silva 2004: 40.— Forest & Holthuis 1997: 56, pl. 40, fig. 1, 1a.— Komai 2004a: 40, fig. 4C, D.— Felder et al. 2009: 1061.

Material examined. BIOREPES2 stn 10, ♂ 1; stn 11, ♀ 5, ovigerous ♀ 4. COBERPES 2011 stn E4, ♂ 2, ovigerous ♀ 6; stn E7, ♀ 1, ovigerous ♀ 64.

Overall Geographic and Bathymetric Distribution. Recorded in the East and South Florida ; Gulf of Mexico (NW, NE, SW); Caribbean Sea; Brazil; from 256 to 692 m depth ( Felder et al. 2009) .

Distribution in the Southwestern and Southeastern Gulf of Mexico. In Mexican deep-waters, this species was found on muddy bottom on the west of Cabo Catoche and Celestún, Yucatán (SSW), at a depth range of 422.0 to 536.0 m ( Fig. 11 ).

Remarks. G. spinicauda was not a frequent species found in the trawls. We collected this species in only two cruises. The total abundance was 83 individuals. The maximum number of individuals was collected in front of Cabo Catoche at 423.9 m depth, during the spring of 2011. The ovigerous females represented 92.2% of the total females, and varied in size from 19.0 to 25.7 mm CL (mean 1.06154 ± 0.24 SD). ANOVA test showed a significant difference in size distribution between 400–499 and 500–599 m depth strata (F = 14.0075, p <0.0004) ( Fig.12 ).

Figures

FIGURE 11. Map of distribution of G. spinicauda in the southern Gulf of Mexico. Abbreviations: T= Tamaulipas, V= Veracruz, TA= Tabasco, CA= Campeche, Y= Yucatán, QR= Quintana Roo.

FIGURE 12. Size distribution by sex and depth interval of ovigerous females of G. spinicauda.