Human-Mediated Spread of Alien Crabs

Brockerhoff, A. M.; McLay, Colin L.

doi:10.1007/978-94-007-0591-3_2

Cited by 58 publications

(49 citation statements)

References 176 publications

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“…Assuming all crabs undergo the same vitellogenic process, they (including H. sanguineus) should therefore all be capital breeders, corroborating the idea that ectotherms are more likely to be capital breed ers (Bonnet et al, 1998). Although interspecific variation of life history traits exist among various crabs (Brockerhoff & McLay, 2011), the transfer of energy from the hepatopancreas to ovaries during vitellogenesis is largely conserved (Harrison, 1990). Even with the capability for de novo synthesis of vitellogenin in some crabs species such as Uca pugilator (Bose, 1802) (Ocypodidae) (see Eastman-Reks & Fingerman, 1985), the hepatopancreas is still known to contribute significantly to egg yolk production (Quackenbush & Keeley, 1988).…”

Section: Resultsmentioning

confidence: 83%

“…However, as an opposing trend of HSI and GSI has been observed in S. serrata (see Alava et al, 2007), it is apparent that endogenous energy sources still account for the general pattern of lipid deposition, which suggests that S. serrata has the capacity to utilize mixed breeding strategies. As S. serrata is a known established non-native species (Brockerhoff & McLay, 2011), this trait (mixed breeding strategy) might be important for the invasiveness of crabs.…”

Section: Resultsmentioning

confidence: 99%

“…These include introduced (both established and non-established) and non-introduced species (table I) Sesarma intermedia (De Haan, 1835) Non-introduced Capital breeding Native range Kyomo (1988) Invasion status was determined following Brockerhoff & McLay (2011).…”

Section: Resultsmentioning

confidence: 99%

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Capital or income breeding crabs: who are the better invaders?

Zeng

McLay

Yeo

2014

Crustac

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A recent study by Griffen et al. (2012) drew a link between invasiveness and breeding strategy (income or capital breeding), a hitherto unconsidered life-history trait, in crabs. The methods used by the authors identified Carcinus maenas (Linnaeus, 1758) as a capital breeder and Hemigrapsus sanguineus (De Haan, 1853) as an income breeder. We extend this association of breeding strategies and invasiveness to other crab species and note that crabs in general are capital breeders based on the concurrent opposing trends o f gonadosomatic index and hepatosomatic index during secondary vitellogenesis (indicating an endogenous source of nutrients for reproduction). We identify possible reasons why H. sanguineus may be regarded as an exception to this brachyuran life history pattern.Given that some species could be capable of a mixed breeding strategy, we propose experimental methods for determining such strategies. RÉSUMÉ Une étude récente par Griffen et al. (2012) établit un lien entre la capacité d 'invasion et la stratégie de reproduction (reproduction à partir du revenu e.g. nutriments récemment ingérés ou reproduction à partir du capital de réserves endogènes), un trait d 'histoire de vie non considéré jusqu'à présent chez les crabes. Les méthodes utilisées par les auteurs identifient Carcinus maenas (Linnaeus, 1758) comme un reproducteur à partir du capital et Hemigrapsus sanguineus (De Haan, 1853) comme un reproducteur à partir du revenu. Nous étendons cette association entre stratégie de reproduction et capacité d 'invasion à d 'autres espèces de crabes et notons que les crabes sont en général des reproducteurs sur le capital, ceci en se basant sur les tendances opposées concurrentes entre l'index gonadosomatique et l'index hépatosomatique au cours de la vitellogenèse secondaire (indiquant une source endogène de nutriments pour la reproduction). Nous identifions les raisons possibles qui peuvent faire apparaître H. sanguineus comme une exception au cycle biologique des brachyoures. Etant donné que quelques espèces sont capables d 'une stratégie de reproduction mixte, nous proposons des méthodes expérimentales pour déterminer de telles stratégies.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

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Capital or income breeding crabs: who are the better invaders?

Zeng

McLay

Yeo

2014

Crustac

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“…The five species modeled within are Carcinus maenas (Linnaeus, 1758), Charybdis hellerii (A. MilneEdwards, 1867), Charybdis japonica (A. MilneEdwards, 1861), Hemigrapsus sanguineus (De Haan, 1835), and Rhithropanopeus harrisii (Gould, 1841). These species represent a broad spectrum of invasion history, habitat preference, biology, and research focus (see Brockerhoff & McLay, 2011 for more species details).…”

Section: Methodsmentioning

confidence: 99%

“…Non-native populations are established around the globe, including in the Atlantic Ocean (C. maenas in the northwest, southwest, and southeast; C. hellerii in the Caribbean, northwest, and southwest; H. sanguineus in the northeast and northwest; and R. harrisii in the southwest and northeast) and Pacific Ocean (C. maenas in the northwest, southwest, and northeast; C. japonica in the southwest; and R. harrisii in the northeast) (Brockerhoff & McLay, 2011). Additionally, C. hellerii and H. sanguineus have been documented in the Mediterranean Sea.…”

Section: Methodsmentioning

confidence: 99%

Modeling invasion risk for coastal marine species utilizing environmental and transport vector data

Crafton

2014

Hydrobiologia

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Invasive species can cause ecological and economic damage and can be transported by several vectors, many of which are connected to socioeconomic activities. This research presents a model that combines introduction likelihood and environmental suitability to characterize global patterns of invasion risk in coastal marine areas by identifying where a species is both likely to arrive and able to survive. The model projects environmental suitability using MaxEnt and considers commercial port locations, as a proxy for commercial shipping, to map patterns of relative invasion risk on a near global scale. A case study of five coastal marine crab species is presented. These models identify several regions that are at risk of new invasion where modeled environmental suitability and introduction likelihood overlap. The distribution of large commercial ports is near global but not evenly distributed; northern hemisphere temperate locations have a higher density of ports and tend to have more opportunities for invasion according to these models. This approach can be adapted to other marine and non-marine species and to current and future environmental and socioeconomic conditions, but it works best when occurrence data are representative of the complete range of conditions under which a species can survive.

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