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Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A series of stomatopod specimens belonging to the family Squillidae was obtained during sampling operations off the coast of Sinaloa (Mexico) in 1990, during three exploratory cruises. A total of 466 specimens were captured with commercial otter trawls used in the shrimp fishery, between 9 and 128 m depth. All specimens belonged to the genus Squilla and were collected in 34 of the 62 sampling stations. The same four species were collected during each cruise: Squilla hancocki (231 specimens), S. panamensis (114), S. mantoidea (97) and S. parva (24). All trawls considered, the sex ratio (M:F) was 1.34:1 for S. hancocki, 1.72:1 for S. mantoidea and 1.23:1 for S. panamensis. Adult and subadult sizes were well represented in the samples considering the known maximum size (total length) of each species. Of the 34 trawls with stomatopods, 15 (44%) contained only one species, 15 (44%) two species and 4 (12%) three species; no sample contained all four species. No geographic distribution pattern was detected in regard to the distribution of the sampling stations with the highest number of species. [ABSTRACT FROM AUTHOR]