Sexual seasonal growth variation and reproduction biology of the rock pool prawn, &lt;em&gt;Palaemon elegans&lt;/em&gt; (Decapoda: Palaemonidae) in the southern Black Sea

Bilgin, Sabri; Özen, Özcan; Samsun, Osman

doi:10.3989/scimar.2009.73n2239

Cited by 18 publications

(1 citation statement)

References 25 publications

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“…Several species of the genus Palaemon were studied with regard to their reproductive biology, such as: Palaemon northropi (Rankin, 1898) [7,11], Palaemon pandaliformis (Stimpson, 1871) [12]; Palaemon longirostris H. Milne Edwards, 1837 [4,13]; Palaemon gravieri (Yu, 1930) [14]; and Palaemon elegans Rathke, 1837 [15]. However, considering the diversity of species, life habits, and environments occupied by the species of this genus, it is still not possible to understand how parameters of their reproductive biology can vary inter-and intra-specifically.…”

Section: Introductionmentioning

confidence: 99%

Reproductive biology of the shrimp Palaemon northropi (Rankin, 1898) (Caridea: Palaemonidae) from an estuary in the Brazilian northeastern

et al. 2019

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The objective of this study was to evaluate aspects of the reproductive biology of Palaemon northropi, a shrimp of the northeastern Brazilian estuarine region. The specimens were sampled between July and November 2017, with a hand net, and were identified to species level and sexed. We measured the carapace length (CL) of males and females and the second pleura length (PL) of females. A total of 85 individuals were collected, including 36 males and 49 females (24 non-ovigerous and 25 ovigerous). The sex ratio was 0.42, with a non-significant departure from the 1:1 ratio. Mean sizes (±SD) of males and females were 3.41±0.54 and 4.98±1.33 mm CL, respectively. The mean size of the PL (±SD) of females was 2.67±1.03 mm CL. Mean fecundity was 255±57.84 embryos. The CL was positively associated with fecundity, but the fecundity did not vary between embryo developmental stages. Palaemon northropi shows sexual dimorphism, with females being larger than males. The results indicate that the embryonic development of P. northropi occurs normally, even in an estuarine region, such as that of present study, since there was no significant loss of embryos during development. This study contributes to knowledge of the reproductive biology of P. northropi and help in our understanding of the ecological relevance of these shrimps in estuarine environments.

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Section: Introductionmentioning

confidence: 99%

Reproductive biology of the shrimp Palaemon northropi (Rankin, 1898) (Caridea: Palaemonidae) from an estuary in the Brazilian northeastern

et al. 2019

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A technical note on seasonal growth models

García‐Berthou

Carmona-Catot

Merciai

et al. 2012

Rev Fish Biol Fisheries

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The growth of many organisms is seasonal, with a dependence on variation in temperature, light, and food availability. A growth model proposed by Somers (Fishbyte 6:8-11, 1988) is one of the most widely used models to describe seasonal growth. We point out that three different formulae (beyond numerous typographical errors) have been used in the literature referring to Somers (Fishbyte 6:8-11, 1988). These formulae correspond to different curves and yield different parameter estimates with different biological interpretations. These inconsistencies have led to the wrong identification of the period of lowest growth rate (winter point) in some papers of the literature. We urge authors to carefully edit their formulae to assure use of the original definition in Somers (Fishbyte 6:8-11, 1988)Financial support for this research was provided by the Spanish Ministry of Science (projects CGL2009-12877-C02-01 and Consolider-Ingenio 2010 CSD2009-00065)

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