Reproductive characteristics of Tozeuma carolinense (Decapoda: Caridea: Hippolytidae) in the Gulf of Mexico

Autores/as

DOI:

https://doi.org/10.22201/ib.20078706e.2019.90.2670

Palabras clave:

Fecundity, Phantom shrimp, Population analysis, Tozeuma carolinense

Resumen

We studied reproductive characteristics of the phantom shrimp Tozeuma carolinense inhabiting sea-grass beds to test hypotheses about seasonality of reproduction, sex ratio and sexual system, and fecundity values in 3 Mexican collecting sites in the Gulf of Mexico. Four hundred and eighty collected individuals were measured and separated to 3 groups. Based on discriminant analysis, carapace length (CL) was selected as morphometric feature to define 10 size-class intervals. The relationship between sexes were analyzed. Embryos were counted, measured and classified into 4 stages of development. Regression analyses were performed to determine the correlation between the number and size of embryos vs. CL. Sex ratio was 1:1, however, for each location, the sex ratio was different. Males were smaller than females; ovigerous females were larger than non-ovigerous females and males. Fecundity analysis have a significant positive relationship, both in the number and size of embryos vs. female CL. Ovigerous females were found at all dates, and confirmed in El Cayo populations with monthly samples in a year, so that we conclude that T. carolinense belongs to the species category with a seasonal-continuous reproduction.

Biografía del autor/a

José Luis Bortolini, Universidad Nacional Autónoma de México

Técnico Académico Titular "B" de T. C

Departamento de Biología Comparada

Facultad de Ciencias, UNAM

Descargas

Publicado

2019-10-03

Número

Sección

ECOLOGÍA