Latitudinal variation in the Dungeness crab, Cancer magister: zoeal morphology explained by incubation temperature

Shirley, Susan M.; Shirley, Thomas C.; Rice, Stanley D.

doi:10.1007/bf00409567

Cited by 94 publications

(83 citation statements)

References 18 publications

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“…Egg development is generally faster at higher temperatures, but causes an altered metabolic eYciency often resulting in a size reduction of later life stages. This has been shown for the Dungeness crab, Cancer magister (Shirley et al 1987), the spider crab, Hyas araneus (Kunisch and Anger 1984) as well as for caridean shrimps like Nauticaris magellanica (Wehrtmann and Kattner 1998), Betaeus emarginatus (Wehrtmann and López 2003), and Pandalus borealis (Brillon et al 2005) in laboratory cultures, and for Nauticaris magellanica from the Weld (Thatje and Bacardit 2000). In C. setosus eggs from a southern Chilean population were larger containing higher lipid content, resulting in bigger larvae than eggs from northern Chile (Fischer et al 2009b).…”

Section: Introductionmentioning

confidence: 84%

“…All these parameters include the rostral spine. Shirley et al (1987) showed that a subtraction of the rostral spine from parameters measured prohibit signiWcant diVerences. This is not the case in the present study, but nonetheless the characteristic of the rostral spine seems to be sensitive to temperature.…”

Section: Discussionmentioning

confidence: 99%

“…The size and elemental composition of eggs and hatchlings itself has been subject to some studies, but fewer studies have addressed the question of phenotypic eVects on larvae (Shirley et al 1987;Thatje and Bacardit 2000;Wehrtmann and Albornoz 2003). Following the assumption that larval size will follow the known latitudinal cline in egg size, we hypothesise that larvae from Puerto Montt have larger sizes and tested whether the temperature experienced during embryonic development triggers phenotypic plasticity of the zoeal stages in this species.…”

Section: Introductionmentioning

confidence: 99%

“…Criales and Anger 1986;Shirley et al 1987). However, quantitative experimental studies on this subject are scarce and most insight is probably available from experimental laboratory studies of decapod crustaceans.…”

Section: Introductionmentioning

confidence: 99%

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Temperature effects on zoeal morphometric traits and intraspecific variability in the hairy crab Cancer setosus across latitude

2009

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Phenotypic plasticity is an important but often ignored ability that enables organisms, within species-speciWc physiological limits, to respond to gradual or sudden extrinsic changes in their environment. In the marine realm, the early ontogeny of decapod crustaceans is among the best known examples to demonstrate a temperature-dependent phenotypic response. Here, we present morphometric results of larvae of the hairy crab Cancer setosus, the embryonic development of which took place at diVerent temperatures at two diVerent sites (Antofagasta, 23°45Ј S; Puerto Montt, 41°44Ј S) along the Chilean Coast. Zoea I larvae from Puerto Montt were signiWcantly larger than those from Antofagasta, when considering embryonic development at the same temperature. Larvae from Puerto Montt reared at 12 and 16°C did not diVer morphometrically, but sizes of larvae from Antofagasta kept at 16 and 20°C did, being larger at the colder temperature. Zoea II larvae reared in Antofagasta at three temperatures (16, 20, and 24°C) showed the same pattern, with larger larvae at colder temperatures. Furthermore, larvae reared at 24°C, showed deformations, suggesting that 24°C, which coincides with temperatures found during strong EL Niño events, is indicative of the upper larval thermal tolerance limit. C. setosus is exposed to a wide temperature range across its distribution range of about 40° of latitude. Phenotypic plasticity in larval oVspring does furthermore enable this species to locally respond to the inter-decadal warming induced by El Niño. Morphological plasticity in this species does support previously reported energetic trade-oVs with temperature throughout early ontogeny of this species, indicating that plasticity may be a key to a species' success to occupy a wide distribution range and/or to thrive under highly variable habitat conditions.

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Section: Introductionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temperature effects on zoeal morphometric traits and intraspecific variability in the hairy crab Cancer setosus across latitude

2009

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“…It is likely that important factors in the planktonic environment, such as temperature, salinity, food availability, or predation pressure exhibit variability likely to aVect larval morphology (Anger 2001;HadWeld and Strathmann 1996). In fact, Shirley et al (1987) reported morphological diVerences in zoea larvae of Cancer magister (Dana, 1852) collected in Alaskan and Californian waters, localities exhibiting distinct and contrasting oceanographic conditions. Furthermore, important variability in larval features has been described for other decapod species (i.e.…”

Section: Introductionmentioning

confidence: 99%

Description, seasonal morphological variation, and molecular identification of Paraxanthus barbiger megalopae obtained from the natural environment

Ampuero¹,

Palma

Véliz

et al. 2009

Helgol Mar Res

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Larval identiWcation represents a powerful tool for detailed studies on recruitment and population dynamics in marine invertebrates. However, intra-speciWc morphological variation can become a serious limitation for the correct identiWcation at species level. High morphological variation can be expected in species with continuous breeding periods because larvae are exposed to seasonal Xuctuations in physical and biological factors during their development in the plankton. We describe, for the Wrst time, the megalopae of Paraxanthus barbiger, one of the most common and abundant brachyuran crabs along the coast of Chile. To validate larvae identiWcation, the 16S rRNA gene was sequenced from both megalopae and adults, and was compared with sequences of three sympatric species. In addition, size, body shape, and appendage setation pattern variations were analyzed with a year-round sampling scheme. The results demonstrated high seasonal phenotypic plasticity in size. Despite these diVerences, certain conservative characteristics exist which can be very useful for identiWcation at species level.

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Disentangling genetic from environmental effects on phenotypic variability of southern rock lobster (Jasus edwardsii) postlarvae

Villacorta‐Rath

Green

Gardner

et al. 2022

Ecology and Evolution

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Environmental conditions experienced during the larval dispersal of marine organisms can determine the size‐at‐settlement of recruits. It is, therefore, not uncommon that larvae undergoing different dispersal histories would exhibit phenotypic variability at recruitment. Here, we investigated morphological differences in recently settled southern rock lobster ( Jasus edwardsii ) recruits, known as pueruli, along a latitudinal and temporal gradient on the east coast of Tasmania, Australia. We further explored whether natural selection could be driving morphological variation. We used double digest restriction site‐associated DNA sequencing (ddRADseq) to assess differences in the genetic structure of recently settled recruits on the east coast of Tasmania over 3 months of peak settlement during 2012 (August–October). Phenotypic differences in pueruli between sites and months of settlement were observed, with significantly smaller individuals found at the northernmost site. Also, there was a lack of overall genetic divergence; however, significant differences in pairwise F ST values between settlement months were observed at the southernmost study site, located at an area of confluence of ocean currents. Specifically, individuals settling into the southernmost earlier in the season were genetically different from those settling later. The lack of overall genetic divergence in the presence of phenotypic variation indicates that larval environmental history during the dispersal of J. edwardsii could be a possible driver of the resulting phenotype of settlers.

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Latitudinal variation in the Dungeness crab, Cancer magister: zoeal morphology explained by incubation temperature

Cited by 94 publications

References 18 publications

Temperature effects on zoeal morphometric traits and intraspecific variability in the hairy crab Cancer setosus across latitude

Temperature effects on zoeal morphometric traits and intraspecific variability in the hairy crab Cancer setosus across latitude

Description, seasonal morphological variation, and molecular identification of Paraxanthus barbiger megalopae obtained from the natural environment

Disentangling genetic from environmental effects on phenotypic variability of southern rock lobster (Jasus edwardsii) postlarvae

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