Female reproductive pattern of<i>Callinectes sapidus</i>Rathbun, 1896 (Brachyura: Portunidae) in Iskenderun Bay, Eastern Mediterranean

Türeli̇, Canan; Yeşi̇lyurt, İrem Nur; Nevşat, I. Erdal

doi:10.1080/09397140.2017.1388495

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…Additionally to the growth rates, sexual maturity, fecundity, associated with the number and diameter of eggs, gave an important information for estimating the reproductive potential of the species/population [ 74 , 81 ]. Our results showed fecundity in the same range as that observed in the species native range in Chesapeake Bay (USA) [ 18 ] and Brazil [ 69 ] and in the Mediterranean Sea [ 93 ], but lower than populations from Mexico [ 94 ]. Such oscillations may be caused by several factors such as: the timing and stage of embryonic development of the eggs at the time of the count or the genetic characteristics of the populations [ 89 ].…”

Section: Discussionsupporting

confidence: 78%

Environmental drivers of size-based population structure, sexual maturity and fecundity: A study of the invasive blue crab Callinectes sapidus (Rathbun, 1896) in the Mediterranean Sea

Marchessaux,

Gjoni,

Sarà

2023

PLoS ONE

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The blue crab Callinectes sapidus (Rathbun, 1896) is one of the most invasive species in the Mediterranean Sea. Understand how the populations are maintained and how the environment is driving the populations in the areas invaded is the key to an effective future management. This current study is presenting a monthly long-term monitoring of the blue crabs’ population structure, body size, sexual maturity, reproduction periods and fecundity, and their relationships with environmental factors in a saltmarshes system in Italy. During winter, high densities (15 ± 8 ind m-2) of early juveniles (< 2 cm) were observed, and their numbers decreased due the population growth until summer. The size-spectra showed that across different temperature (18–26°C) and salinity (24–40 psu) gradients, the growth period for males is faster than for females. Based on abdominal analysis, sexual maturity was defined at ∼12 cm for males and females but the population was in favor of males that were more than 66% of the time mature throughout the year. Copulations periods were identified between spring and autumn when more than 50% of females were matures, and ovigerous females’ migrations were observed in late summer. Our study expand our understanding of how the environment interacts to effect physiological and biological processes of alien species and improve our ability to make predictions of how environmental change the distribution of the alien species in the future. Based on our results, we also discuss which population control strategy would be most effective based on the data available in the literature.

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Section: Discussionsupporting

confidence: 78%

Environmental drivers of size-based population structure, sexual maturity and fecundity: A study of the invasive blue crab Callinectes sapidus (Rathbun, 1896) in the Mediterranean Sea

Marchessaux,

Gjoni,

Sarà

2023

PLoS ONE

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“…Yet, invasive populations might show differing life history dynamics than the native ones, and in the Eastern Mediterranean spawning has been reported from much earlier (i.e. from mid spring) and lasting longer (up to eight months) than in the C. sapidus native range (Sumer et al 2013;Kevrekidis and Antonadiou 2018;Türeli et al 2018), where reproduction occurs throughout the summer with a spawning peak in late July and early August (Epifanio 1995). Given the monthlong duration of larval development (Epifanio 2019), the earlier and longer reproductive period of C. sapidus in the Mediterranean squares well with the findings of megalopae in both July and October, and could be an additional factor favoring the dispersal of the species in the Mediterranean Sea.…”

Section: Resultsmentioning

confidence: 99%

Larvae of the blue crab Callinectes sapidus Rathbun, 1896 (Decapoda: Brachyura: Portunidae) in the Balearic Archipelago (NW Mediterranean Sea)

et al. 2021

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The invasive blue crab Callinectes sapidus has been frequently recorded during the last years along the NW Mediterranean Sea, leading to established populations. Two megalopae of C. sapidus were found during two different oceanographic surveys in open waters of the Balearic Archipelago, in July 2005 and October 2011, previous to the first reference of adult specimens documented in the Balearic sub-basin. The analyzed environmental conditions of the sampling periods allowed us to hypothesize the likely introduction pathways, namely by maritime transport and surface currents. Furthermore, the recorded megalopae seem to enlarge the life history of C. sapidus in regard to its native area, where spawning peaks occur in late July and early August.

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“…While the second one weighed 312.5 g and measured 80 and 197 mm in CL and CW, respectively. According to Türeli et al (2018), both blue crabs were adult females (stage IV) with dark orange ovaries. The main features, such as brownish-green dorsal carapace surface with white spots, scattered mostly in its anterior portion, whitish ventral surface, and bright orange chelipeds, were in agreement with the description proposed by Williams (1974) (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Carapace length (CL, mmthe distance between the centre of the anterior interorbital margin and the centre of the posterior margin) and carapace width (CW, mm the maximal distance between the posterior anterolateral spines) of the first two specimens were recorded with a calliper to the lowest millimetre. In contrast, sexual maturity was determined, according to Türeli et al (2018).…”

Section: Methodsmentioning

confidence: 99%

Further records of Callinectes sapidus (Rathbun, 1896) (Decapoda, Brachyura, Portunidae) in the Strait of Sicily

et al. 2020

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Female reproductive pattern ofCallinectes sapidusRathbun, 1896 (Brachyura: Portunidae) in Iskenderun Bay, Eastern Mediterranean

Cited by 9 publications

References 9 publications

Environmental drivers of size-based population structure, sexual maturity and fecundity: A study of the invasive blue crab Callinectes sapidus (Rathbun, 1896) in the Mediterranean Sea

Environmental drivers of size-based population structure, sexual maturity and fecundity: A study of the invasive blue crab Callinectes sapidus (Rathbun, 1896) in the Mediterranean Sea

Larvae of the blue crab Callinectes sapidus Rathbun, 1896 (Decapoda: Brachyura: Portunidae) in the Balearic Archipelago (NW Mediterranean Sea)

Further records of Callinectes sapidus (Rathbun, 1896) (Decapoda, Brachyura, Portunidae) in the Strait of Sicily

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