Exposure to thermal extremes favors higher solar reflectivity in intertidal gastropods

Franklin, Amanda M.; Rankin, Katrina J.; Hugall, Andrew F.; Stuart‐Fox, Devi

doi:10.1016/j.isci.2022.105674

Cited by 4 publications

(3 citation statements)

References 69 publications

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“…The presence of large individuals in the settlement land uses characterized by a lack of canopy closures is related to the reflectivity of the shell (Franklin et al 2022). Mollusks resided in water with limited protection from the sun and exposure to thermal extremes.…”

Section: Discussionmentioning

confidence: 99%

Shell size distributions, land use, and water quality relationships of a freshwater apple snail Pomacea canaliculata (Lamarck, 1822) in Maninjau Lake, West Sumatra, Indonesia

TAKARINA,

SOEPROBOWATI,

KOMALA

et al. 2023

Biodiversitas

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Abstract. Takarina ND, Soeprobowati TR, Komala PS, Subehi L, Wojewódka-Przyby? M, Nurdin D. 2023. Shell size distributions, land use, and water quality relationships of a freshwater apple snail Pomacea canaliculata (Lamarck, 1822) in Maninjau Lake, West Sumatra, Indonesia. Biodiversitas 24: 5478-5484. The freshwater apple snail, Pomacea canaliculata (Lamarck, 1822), is a common mollusk in lake ecosystems, including Maninjau Lake, West Sumatra. Despite its presence in Maninjau Lake, the information about its shell size, land use, and water quality variable relationships is very limited. This paper aims to study how the land use surrounding the lake and water quality variables can affect the shell size distributions of P. canaliculata. The samples were collected from several locations representing the varieties of land uses, including settlements, paddy fields, forest covers, and river mouths, along with water quality variables. Statistical analysis was done using ANOVA and validated by Tukey's post hoc test to analyze differences among locations. Pearson’s correlation test was used to analyze the relationship between shell size and water quality variables. The results show that the differences in land use and water quality variables affected the variations of shell length (P < 0.05, F = 4.925) and width (P< 0.05, F = 12.369) of P. canaliculata. The average shell length was 2.709 cm and 2.022 cm for the width. The large shell size was observed in settlement land uses (P< 0.05), and the small shell was observed in forest and paddy field land uses (P< 0.05). The water near settlement land uses was characterized by high temperatures, while colder water was observed in forest and paddy field land uses. Pearson’s test confirms that increases in shell length and width were correlated with increases in temperature and dissolved oxygen.

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Section: Discussionmentioning

confidence: 99%

Shell size distributions, land use, and water quality relationships of a freshwater apple snail Pomacea canaliculata (Lamarck, 1822) in Maninjau Lake, West Sumatra, Indonesia

TAKARINA,

SOEPROBOWATI,

KOMALA

et al. 2023

Biodiversitas

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show abstract

“…Seasonal variation in environmental conditions, such as temperature or food availability, can negatively impact growth, fecundity and in severe cases, the survival of animals [1][2][3][4][5]. To mitigate the effects of seasonal changes, animals use a suite of behavioural, physiological and morphological adaptations [6][7][8][9][10]. These adaptations vary among individuals, populations and species, and thus so do the impact of seasonal changes [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…To mitigate the effects of seasonal changes, animals use a suite of behavioural, physiological and morphological adaptations [6][7][8][9][10]. These adaptations vary among individuals, populations and species, and thus so do the impact of seasonal changes [10][11][12][13]. By documenting how various organisms respond to seasonal changes, we can identify different adaptations to challenging environmental conditions and improve predictions of how changing climates will impact ecosystems [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Body mass index does not decline during winter for the sedentary marine gastropod Crepidula fornicata

et al. 2023

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Seasonal extremes in environmental conditions can substantially limit the growth and reproduction of animals. Sedentary marine animals are particularly susceptible to winter food limitation since they cannot relocate to more favourable conditions. In several temperate-zone bivalve species, substantial winter tissue mass declines have been documented; however, no comparable studies have been conducted on intertidal gastropods. Here, we investigate whether the suspension-feeding intertidal gastropod Crepidula fornicata also loses substantial tissue mass during the winter. We calculated body mass index (BMI) for individuals collected in New England at different times of year for 7 years to determine whether BMI declines through winter or varies seasonally. Remarkably, C. fornicata body mass did not decline significantly during winter months; indeed, a relatively poorer body condition was associated with higher seawater temperature, higher air temperature and higher chlorophyll concentration. In a laboratory experiment, we found that C. fornicata adults that were not fed for three weeks at 6°C (local winter seawater temperature) showed no detectable declines in BMI compared to field-collected individuals. Future studies should document energy budgets of C. fornicata and other sedentary marine animals at low winter seawater temperatures, and the impact of short-term elevated temperatures on those energy budgets.

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How does Gloger’s rule predict near- and mid-infrared radiation in birds?

Lee,

Barrett,

Pilon

et al. 2024

Preprint

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Animal coloration has diverse functions such as camouflage, communication, thermoregulation, protection from UV damage and more, and can be shaped by environmental selective pressures. Some climactic selective pressures are strong enough to produce consistent patterns in many species across large-scale geographic gradients. One pattern in endothermic animals is Gloger’s rule, which predicts that populations in hot, humid areas will be darker than those in cool, dry areas. This pattern has been demonstrated in several species across latitudinal gradients and is expected to relate to the selective effects of both local thermoregulatory pressures and humidity. However, shortwave radiation from sunlight extends beyond the visible spectrum [400-700 nm] into the near-infrared; thus, thermal pressures often result in changes in surface reflectance characteristics beyond the visible [e.g., 700-2500 nm]. Further, heat exchange with the environment extends into the mid-infrared, including MIR heat loss through the atmospheric transmission window [7.5 - 14 um]. Here, we examine both UV-NIR absorption and MIR emittance in five species of birds that have been shown to follow, or not follow, Gloger’s rule. We show that NIR absorption varies by species and population in ways that correspond to their habitat and thermoregulatory strategies. MIR emittance, by contrast, was very stable across both species and populations but differed across populations of Northern Bobwhites. We conclude by highlighting the importance of extending coloration research into the NIR and MIR. Further consideration of infrared radiation is necessary for a complete view of animals’ phenotypic diversity and possible responses to thermal challenge.

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Exposure to thermal extremes favors higher solar reflectivity in intertidal gastropods

Cited by 4 publications

References 69 publications

Shell size distributions, land use, and water quality relationships of a freshwater apple snail Pomacea canaliculata (Lamarck, 1822) in Maninjau Lake, West Sumatra, Indonesia

Shell size distributions, land use, and water quality relationships of a freshwater apple snail Pomacea canaliculata (Lamarck, 1822) in Maninjau Lake, West Sumatra, Indonesia

Body mass index does not decline during winter for the sedentary marine gastropod Crepidula fornicata

How does Gloger’s rule predict near- and mid-infrared radiation in birds?

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