Thermal adaptation of maternal and embryonic phenotypes in a geographically widespread ectotherm

Angilletta, Michael J.; Oufiero, Christopher E.; Sears, Michael W.

doi:10.1016/j.ics.2004.07.038

Cited by 34 publications

(35 citation statements)

References 43 publications

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“…from 15 May to 15 September). While embryo retention and faster developmental rate have evolved repeatedly in lizards in cool climates [21][22][23][24], our results demonstrate that such adaptations can arise very rapidly. Extant wall lizard populations in England were introduced less than 100 years ago, with the target populations tracing their origins back to between two and eight decades [15].…”

Section: Discussionmentioning

confidence: 65%

“…Females had visible mating scars, large follicles or carried recently ovulated eggs (as determined by palpation), which ensured that they were fertile but would complete the large majority of gestation in the laboratory. Females were housed individually in cages (590 Â 390 Â 415 mm) with sand as substrate, bricks as shelter, a water bowl, and held at a light cycle of 12 L : 12 D. They were given access to basking lights (60 W) for 8 h d 21 and a UV light (EXO-TERRA 10.0 UVB fluorescent tube) for 4 h d 21 and they were fed mealworms and crickets daily. Cages were inspected in the morning and in the late afternoon for signs of oviposition (which is easily assessed by visual inspection of females), such that eggs were recovered within 12 h of oviposition.…”

Section: (B) Effects Of Hatching Date On Recruitment Into Adulthoodmentioning

confidence: 99%

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Adaptive responses to cool climate promotes persistence of a non-native lizard

et al. 2015

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Successful establishment and range expansion of non-native species often require rapid accommodation of novel environments. Here, we use commongarden experiments to demonstrate parallel adaptive evolutionary response to a cool climate in populations of wall lizards (Podarcis muralis) introduced from southern Europe into England. Low soil temperatures in the introduced range delay hatching, which generates directional selection for a shorter incubation period. Non-native lizards from two separate lineages have responded to this selection by retaining their embryos for longer before ovipositionhence reducing the time needed to complete embryogenesis in the nest-and by an increased developmental rate at low temperatures. This divergence mirrors local adaptation across latitudes and altitudes within widely distributed species and suggests that evolutionary responses to climate can be very rapid. When extrapolated to soil temperatures encountered in nests within the introduced range, embryo retention and faster developmental rate result in one to several weeks earlier emergence compared with the ancestral state. We show that this difference translates into substantial survival benefits for offspring. This should promote short-and long-term persistence of nonnative populations, and ultimately enable expansion into areas that would be unattainable with incubation duration representative of the native range.

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Section: Discussionmentioning

confidence: 65%

Section: (B) Effects Of Hatching Date On Recruitment Into Adulthoodmentioning

confidence: 99%

Adaptive responses to cool climate promotes persistence of a non-native lizard

et al. 2015

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“…Temperature is a crucial modulator of fish activities and ocean acidification could exacerbate the potential negative effect of warming on performance. Moreover, as individuals are likely to respond to abiotic stressors depending on their environmental history, it is increasingly being recognized that it is important to test individuals from different localities raised in common garden conditions to account for local adaptation of metabolic functions (Angilletta et al, 2004;Angilletta, 2001;Baumann and Conover, 2011;Lombardi-Carlson et al, 2003;Norin and Malte, 2012).…”

Section: Introductionmentioning

confidence: 99%

Intraspecific variation in physiological performance of a benthic elasmobranch challenged by ocean acidification and warming

Santo

2016

Journal of Experimental Biology

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Elucidating the combined effects of increasing temperature and ocean acidification on performance of fishes is central to our understanding of how species will respond to global climate change. Measuring the metabolic costs associated with intense and short activities, such as those required to escape predators, is key to quantifying changes in performance and estimating the potential effects of environmental stressors on survival. In this study, juvenile little skate Leucoraja erinacea from two neighboring locations (Gulf of Maine, or northern location, and Georges Bank, or southern location) were developmentally acclimatized and reared at current and projected temperatures (15, 18 or 20°C) and acidification conditions ( pH 8.1 or 7.7), and their escape performance was tested by employing a chasing protocol. The results from this study suggest countergradient variation in growth between skates from the two locations, while the optimum for escape performance was at a lower temperature in individuals from the northern latitudes, which could be related to adaptation to the local thermal environment. Aerobic performance and scope declined in skates from the northern latitudes under simulated ocean warming and acidification conditions. Overall, the southern skates showed lower sensitivity to these climatic stressors. This study demonstrates that even mobile organisms from neighboring locations can exhibit substantial differences in energetic costs of exercise and that skates from the northern part of the geographic range may be more sensitive to the directional increase in temperature and acidification expected by the end of the century.

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“…In northern populations, females of S. undulatus produce relatively large eggs from which emerge relatively large hatchlings (Angilletta et al 2005). One possibility is that the larger body size of northern hatchlings is due entirely to the maternal effect of egg size (Bernardo 1996).…”

mentioning

confidence: 99%

CONVERGENT EVOLUTION OF EMBRYONIC GROWTH AND DEVELOPMENT IN THE EASTERN FENCE LIZARD (SCELOPORUS UNDULATUS)

Oufiero

Angilletta

2006

Evolution

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Abstract. Theory predicts that cold environments will select for strategies that enhance the growth of ectotherms, such as early emergence from nests and more efficient use of resources. We used a common garden experiment to detect parallel clines in rates of embryonic growth and development by eastern fence lizards (Sceloporus undulatus). Using realistic thermal conditions, we measured growth efficiencies and incubation periods of lizards from five populations representing two distinct clades. In both clades, embryos from cold environments (Indiana, New Jersey, and Virginia) grew more efficiently and hatched earlier than embryos from warm environments (Florida and South Carolina). Because eggs from cold environments were larger than eggs from warm environments, we experimentally miniaturized eggs from one population (Virginia) to determine whether rapid growth and development were caused by a greater maternal investment. Embryos in miniaturized eggs grew as efficiently and incubated for the same duration as embryos in unmanipulated eggs. Taken together, our results suggest countergradient variation has evolved at least twice in S. undulatus.

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Thermal adaptation of maternal and embryonic phenotypes in a geographically widespread ectotherm

Cited by 34 publications

References 43 publications

Adaptive responses to cool climate promotes persistence of a non-native lizard

Adaptive responses to cool climate promotes persistence of a non-native lizard

Intraspecific variation in physiological performance of a benthic elasmobranch challenged by ocean acidification and warming

CONVERGENT EVOLUTION OF EMBRYONIC GROWTH AND DEVELOPMENT IN THE EASTERN FENCE LIZARD (SCELOPORUS UNDULATUS)

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