Life history plasticity and the reproductive strategy enabling the invasion of Ligia exotica (Crustacea: Isopoda) from the littoral zone to an inland creek

Tsai, Min‐Li; Dai, Chang‐Feng

doi:10.3354/meps210175

Cited by 13 publications

(16 citation statements)

References 30 publications

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“…Individuals starting juvenile life with a large size often (but not always, see Moran & Emlet 2001) have higher survival and growth than smaller individuals, as shown in urchins (Emlet & Hoegh-Guldberg 1997), intertidal gastropods (Rivest 1983, Moran 1999, Moran & Emlet 2001, mussels (Phillips 2002), barnacles (Thiyagarajan et al 2003, Emlet & Sadro 2006, and ascidians . Similar findings have also been reported for inland isopods (Tsai & Dai 2001) and for terrestrial spiders (Walker et al 2003).…”

Section: Introductionsupporting

confidence: 78%

Initial juvenile size and environmental severity: influence of predation and wave exposure on hatching size in Nucella ostrina

Gosselin¹,

Rehak²

2007

Mar. Ecol. Prog. Ser.

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According to life history theory, offspring survival increases with offspring size, mainly because large offspring are more resistant to environmental stress. Populations and species living in habitats with severe environmental conditions have therefore been predicted to produce larger offspring than populations in more benign environments. We studied 10 populations of the rocky intertidal gastropod Nucella ostrina in Barkley Sound, Canada, to determine the extent of variation in average hatching size at a small spatial scale (the sites being ≤10 km apart), and to determine the influence on hatching size of 2 components of environmental stress: predation and wave exposure. In a 3 yr study of these 10 populations, average shell length of newly hatched snails differed by 15 to 25% among the populations in a given year, and estimated total organic carbon per hatchling varied by 97 to 210%. These are considerable differences given the proximity of these populations. The relative differences among populations were broadly consistent over the 3 years of the study, some populations consistently producing larger average hatching sizes than other populations. Based on the abundance and size structure of the predator populations at 4 of these field sites, predation pressure was predicted to favour different average N. ostrina hatching sizes at these sites: large at 2 sites and small at 2 sites. However, the average hatching size of N. ostrina populations at those sites was not consistent with that prediction, suggesting predation pressure may not have been an important determinant of hatching size. This is a surprising finding, as predation is often considered to be a major cause of early juvenile mortality and thus an important selective pressure influencing the evolution of early juvenile traits. However, average population hatching size did correlate with the relative degree of wave exposure of the site, indicating that either wave action itself or factors covarying with wave action have a substantial influence on initial juvenile size in this species.

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Section: Introductionsupporting

confidence: 78%

Initial juvenile size and environmental severity: influence of predation and wave exposure on hatching size in Nucella ostrina

Gosselin¹,

Rehak²

2007

Mar. Ecol. Prog. Ser.

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“…Similar maximum longevity values (1.5 -2 years) were estimated for Ligia exotica in Taiwan (Tsai & Dai, 2001), Ligia oceanica in France (Besse et al, 1975) and Ligia pallasii from Canada (Carefoot, 1973). Visual analysis of lengthfrequencies permits to follow a cohort for a maximum period of 1.25 years.…”

Section: Discussionsupporting

confidence: 71%

Growth ofLigia exotica(Isopoda: Oniscidea: Ligiidae) in two estuarine regions of Patos Lagoon, Rio Grande do Sul, Brazil

2009

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Growth of Ligia exotica (Isopoda: Oniscidea: Ligiidae) in two estuarine regions of Patos Lagoon, Rio Grande do Sul, Brazil elis r. lopes-leitzke, luiz f.c. dumont and fernando d'incao FURG, Laboratório de Crustáceos Decápodos, Instituto de Oceanografia, CP: 474, CEP: 96201-900, Rio Grande, RS, BrazilThe aim of this study was to estimate growth parameters of two populations of Ligia exotica inhabiting discrete estuarine areas of Patos Lagoon, Rio Grande do Sul, Brazil. Sampling was performed fortnightly at two different estuarine zones, named Leonideo Island and West Breakwater, to detect different growth patterns for this species by using the von Bertalanffy growth model (VBGM). The VBGM estimated were as follows: TL mm ¼ 34.57 (1 2 e 20.012(t 2 2.93) ) (males in Leonideo Island), TL mm ¼ 35.61(1 2 e 20.009(t 2 5.87) ) (males in West Breakwater), TL mm ¼ 30.11(1 2 e 20.009(t 2 5.84) ) (females in Leonideo Island) and TL mm ¼ 29.65(1 2 e 20.01(t 2 4.87) ). Significant sexual dimorphism was observed, since males reach larger TL (mm) by higher k value (day) and consequently a faster growth pattern. Different growth patterns of males were also detected comparing both populations, in such a way that the West Breakwater individuals are larger than those from the Leonideo Island. One possible explanation is the higher food availability observed in the former site, as well as favourable environmental parameters, providing better conditions for individual growth. Briefly, two different populations of L. exotica were detected in the studied area, presenting discrete growth parameters highly influenced by environmental factors.

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“…For a range of taxa across a variety of habitats, individuals that start juvenile life with a large size often perform better than smaller conspecifics. This pattern has been shown for gastropods (Spight 1976, Gosselin 1997, Moran & Emlet 2001, mussels (Phillips 2002), barnacles (Thiyagarajan et al 2003), ascidians (Marshall et al , 2006, beetles (Fox 2000, Clark et al 2011, isopods (Tsai & Dai 2001), spiders (Walker et al 2003), fish (Green & McCormick 2005, Fisher et al 2007, and birds (Krist 2011). Therefore, intraspecific variation in offspring size is of fundamental ecological and evolutionary importance (Marshall & Keough 2008).…”

Section: Introductionmentioning

confidence: 99%

Offspring size and maternal environments mediate the early juvenile performance of two congeneric whelks

Carrasco¹,

Phillips²,

Pérez‐Matus³

2012

Mar. Ecol. Prog. Ser.

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Offspring size variation can have pervasive ecological and evolutionary implications for both offspring and mother, affecting an organism's performance throughout its life. Using 2 marine intertidal whelk species Cominella virgata and C. maculosa as model organisms, we examined how different maternal environments and contrasting hatchling size influence juvenile performance. The average size of field-collected hatchlings greatly differed between the species and at different scales of variation (i.e. among sites). Species-specific differences in hatching size were reflected in juvenile performance. Overall, C. virgata with larger hatchlings (~3 mm), exhibited faster growth rates and higher survival than the smaller C. maculosa (~1.5 mm). Desiccation treatment did not affect the performance of fed juveniles; however, large hatchlings had higher growth rates than small conspecifics for both species. Starved hatchlings of both species performed more poorly than fed ones; however, species-specific and size differences were less significant for the evaluated traits, suggesting a non-size-related allocation of resources and similar resource utilization during starvation conditions (i.e. within species). As has been described for many taxa, large offspring often perform better than small conspecifics; however, because this performance is likely context-dependent, understanding the importance of different scales of variation is crucial for determining when variation in size is an advantage or a disadvantage in terms of an organism's performance. KEY WORDS: Progeny size · Reproductive strategies · Environmental variation · Phenotypic plasticity · Offspring size-fitness · Cominella Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 459: [73][74][75][76][77][78][79][80][81][82][83] 2012 to either non-adaptive stochastic variation in provisioning or to a maternal bet-hedging strategy in unpredictable environments (see Kamel et al. 2010).The ability of mothers to anticipate the environment that their offspring will experience may therefore mediate variation in offspring size. When mothers are able to predict their offspring's environment, the expectation is that plasticity in mean offspring size will be favored ('anticipatory' maternal effects;Marshall & Uller 2007). Conversely, when mothers are unable to predict the environment, the expected outcome is that increases in the variation of offspring size will ensure that some offspring will be optimal for the environment (Crean & Marshall 2009). Regardless of the strategy, the division of finite reproductive resources should ultimately result in an optimal equilibrium between the offspring fitness and the maximization of the parental fitness, and therefore, simple models have typically suggested that as the relationship between progeny size and progeny fitness changes, the optimal size of progeny is also expected to change as environmental conditions vary (Fox 2000, Walker et al. 2003. Examples provided by Allen et al. (...

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Life history plasticity and the reproductive strategy enabling the invasion of Ligia exotica (Crustacea: Isopoda) from the littoral zone to an inland creek

Cited by 13 publications

References 30 publications

Initial juvenile size and environmental severity: influence of predation and wave exposure on hatching size in Nucella ostrina

Initial juvenile size and environmental severity: influence of predation and wave exposure on hatching size in Nucella ostrina

Growth ofLigia exotica(Isopoda: Oniscidea: Ligiidae) in two estuarine regions of Patos Lagoon, Rio Grande do Sul, Brazil

Offspring size and maternal environments mediate the early juvenile performance of two congeneric whelks

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