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Vol. 60, 2021
(update: 2021.07.27; 10.29)
Life History Traits of the
Snapping Shrimp Alpheus carlae
(Decapoda: Alpheidae) rom the South-eastern Coast of Brazil
Bianca
Ghizelli-Fraga1 , Rogerio
C. Costa1, and Régis
A. Pescinelli1,*
doi:10.6620/ZS.2021.60-62
1Laboratory
of Biology of Marine and Freshwater Shrimp (LABCAM), Faculty of
Sciences, Department of Biological Sciences, São Paulo State University
(UNESP), São Paulo, Brazil. *Correspondence: E-mail:
regispescinelli@yahoo.com.br (Pescinelli)
E-mail: bianca.fraga@unesp.br (Ghizelli-Fraga);
rogerio.c.costa@unesp.br (Costa)
Received 14 December 2020 / Accepted
19 July 2021
Communicated by Benny K.K. Chan
The life history traits of the
snapping shrimp Alpheus carlae
were investigated. We evaluated the relative growth, morphological
sexual maturity, sexual dimorphism, handedness, fecundity, and egg
volume. Sampling was performed monthly in an estuarine region of
Cananéia, in the south-eastern coast of Brazil. The following
structures were measured to perform the relative growth analysis:
length of carapace and second pleonal pleuron, length, width and height
of major
cheliped propodus, and length of appendix interna and appendix
masculina. Juveniles and adults males and females have different growth
patterns, indicating distinct strategies of energy allocation. The
estimated carapace length at the onset of morphological sexual maturity
of females and males was 5.6 mm and 6.2 mm, respectively. The sexual
dimorphism of specific body structures was evident, mainly in the
appendix interna of females and major cheliped of males. There was no
evidence of handedness in females or males. The mean fecundity
of females was 364 ± 204 eggs (mean ± SD) eggs and was positively
correlated with the carapace length. The egg volume differed between
developmental stages I and II, and I and III, with an overall volume
increase of 73.23% and 95.45%, respectively. The results contribute
to the knowledge about A. carlae
and its life history in natural environment.
Key words: Caridea, Relative
growth, Sexual dimorphism, Egg production.
Citation: Ghizelli-Fraga B, Costa RC,
Pescinelli RA. 2021. Life history traits of the snapping shrimp Alpheus
carlae (Decapoda: Alpheidae) from the south-eastern coast of
Brazil.
Zool Stud 60:62.
doi:10.6620/ZS.2021.60-62.
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