Reproductive traits of the freshwater shrimp Caridina fossarum Heller, 1862 (Decapoda, Caridea, Atyidae) in the Ghomp-Atashkedeh spring (Iran)

Abstract

a b s t r a c tIn the present study, some biological traits of Caridina fossarum reproduction are studied in the GhompAtashkedeh spring (Fasa, Shiraz, Iran), for the first time. This Iranian endemic freshwater species was studied from April 2007 to March 2008. Minimum sexable size (MSS) and absolute or relative size at the onset of maturity (SOM and RSOM) in terms of carapace length (CL) was found to be 2.4 mm, 4.3 mm and 55%, respectively. Sex ratio showed variations on a monthly basis. Sex reversal is a possible scenario for C. fossarum because the size-specific sex ratio revealed a reverse pattern. Based on the proportions of ovigerous females, the main breeding season was determined to be from April to August, demonstrating a peak during early spring. There is a period of extended recruitment at water temperatures above 20 • C. The size at which 50% of females are mature was estimated at CL = 5.03 mm from the proportion of ovigerous females during the breeding season. The pleopodal egg number varied from 3 to 75 eggs per female with a mean value 34.39 ± 14.27. The results showed that although there is a significant relationship between carapace length CL and pleopodal egg number, it is not the most important factor affecting potential fecundity in C. fossarum due to the low values of slope (= 1.51) and determination coefficient (= 0.052).

Fecundity and fertility in a freshwater population of the neotropical amphidromous shrimpMacrobrachium acanthurusfrom the southeastern Atlantic

“…Fecundity increases with body size in M. acanthurus as reported before for most species of caridean shrimps, including members from the genus Macrobrachium, in which fecundity has been studied (Macrobrachium: Ching & Velez 1985;Graziani et al 1993;Anger & Moreira 1998;Da Silva et al 2004;Wehrtmann & Lara 2009;Tamburus et al 2012;other genera: Corey & Reid 1991;Lardies & Wehrtmann 1997;Anger & Moreira 1998;Ramirez-Llodra et al 2000;Ramirez-Llodra 2002;Oh et al 2003;Penha-Lopes et al 2007;Zare et al 2011 (Table 1). Overall, M. acanthurus exhibits an average fecundity that represents one of the extremes regarding the trade-off between fecundity and egg-size reported for caridean shrimps and other decapod crustaceans (Sastry 1983;.…”

Embryo production in the sponge-dwelling snapping shrimp Synalpheus apioceros (Decapoda, Alpheidae) from Bocas del Toro, Panama

“…Fecundity, defined as the number of offspring produced by a female in a determined time period, is directly related to energy allocation and is essential in estimating reproductive potential of a population (Ramirez-Llodra 2002, Zare et al 2011). Embryo size is an indicator of the energy allocation, duration of embryogenesis and type of larval development (Dardeau 1984, Ramirez-Llodra 2002).…”

Reproductive traits of the lake prawn Palaemon paucidens De Haan, 1844 (Decapoda, Palaemonidae), from Goesan Lake, South Korea

“…Intra-specific variations in body size, brood size and number of eggs among local populations, as well as two reproductively isolated populations in a single river basin, have been reported for R paucidens in Japan (Nishino, 1980;Chow et al, 1988), other palaemonids (Omori & Chida, 1988;Collart & Rabelo, 1996;Bilgin & Samsun, 2006;Janas & Mañkucka, 2010) and other carideans (Oh & Hartnoll, 1999;Zare et al, 2011). i…”

“…Matocec et al, 2006); it has been suggested that the relative abundance of females during the breeding period in P. paucidens populations is a reproductive strategy to increase the number of recruits via reproduction, as observed in other freshwater shrimps, such as Caridina fossarum Heller, 1862 (cf. Zare et al, 2011), and Macrobrachium iheringi Ortmann, 1897 (cf. Fransozo et al, 2004).…”

“…The wide range in the number of eggs (14-263) observed in this study was suggested as a result of possible high variation in females individual fecundity, as reported before for Caridinafossarum (cf. Zare et al, 2011) or due to different environment factors on the location where females were caught, as found in Macrobrachium nipponense (De Haan, 1849) (cf. Kazuo, 1983.…”