Impact of Changing Temperature on Critical Thermal Maximum and Metabolic Rate of Uca perplexa and Uca crassipes

Nasdwiana Roni, Nadiarti Nurdin Kadir, Shinta Werorilangi, Wayne A. Bennett



This study quantifies thermal tolerance and metabolic rates for two fiddler crab species (Uca perplexa and Uca crassipes) exposed to increasing temperatures. Uca perplexa prefers sun-exposed mangal zones, while U. crassipes inhabits shaded as well as sun-exposed areas. A total forty crabs (20 crabs from each species) were collected from the Ambeua mangrove on Kaledupa Island, and transported to the Hoga Island Research Laboratory for testing. Fifteen crabs of each species were used for CTmax trials, and five crabs were used in metabolic trials. Crabs were acclimated for 10 days at 26, 28, or 30°C prior to experimentation. Critical Thermal Maximum (CTmax) was measured by increasing the temperature by 0.3°C per minute until loss of righting responses was observed. A Gilson differential respirometer was used to determine oxygen uptake at 26 and 31°C for each species, and the results used to calculate temperature quotient (Q10) values. While both crab species showed an increase in thermal tolerance with increasing acclimation temperature, U. crassipes was more heat tolerant (CTmax = 42.21°C), than U. perplexa (CTmax = 41.95°C). Likewise, U. crassipes was less metabolically sensitive to temperature increase (Q10 = 1.33) than U. perplexa, (Q10 = 2.38) suggesting that U. crassipes is better adapted to high environmental temperature conditions.


CTmax; Acclimation; Metabolic rate; Oxygen consumption; Fiddler crab; Ambeua mangrove; Wakatobi National Park

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Aisami A., Yasid N.A., Johari W.L.W. & Shukor M.Y., 2017, Estimation of the Q10 value; the temperature coeffient for the growth of Pseudomonas sp. AQ5-04 Phenol. Bioremediation Science and Technology Research 5(1): 24-16.

Allen B.J., Brook R., Tuan Y. & Levinton J.S., 2012. Size-dependent temperature and desiccation constraints in performance capacity: Implications for sexual selection in a fiddler crab. Journal of experimental Marine Biologi and Ecology 438: 93-99.

Barnes R.S.K., 2010, A remarkable case of fiddler crab, Uca spp., alpha diversity in Wallacea. Hydrobiologia 637(1): 249.

Becker C.D. & Genoway R.G., 1979, Evaluation of the critical thermal maximum for determining thermal tolerance of freshwater fish. Environmental Biology of Fishes 4(3): 245.

Beitinger T.L., Bennett W.A. & McCauley R.W., 2000, Temperature tolerances of North American freshwater fishes exposed to dynamic changes in temperature. Environmental Biology of Fishes 58(3): 237-275.

Benfey T.J., Mccabe, L.E. & Pepin P. 1997. Critical thermal maxima of diploid and triploid brook charr, Salvelinus fontinalis. Environmental Biology of Fishes 49: 259-264.

Bennett W.A., 2000, Temperature tolerances of North American freshwater fishes exposed dynamic changes in temperature. Environmental Biology of Fishes 58: 237-275.

Bezerra L.E.A., Dias C.B., Santana G.X. & Matthews-Cascon H., 2006, Spatial distribution of fiddler crabs (genus Uca) in a tropical mangrove of northeast Brazil. Scientia Marina 70(4): 759–766.

Campbell R. & Mitchell L.G., 2004, Biology: Introduction to Animal structure and function, Volume 3, Fifth Edition, Interpret: Wasmen. Erlangga Publisher, Jakarta.

Chatterjee S., Mazumdar D. & Chakraborty S.K., 2014, Ecological role of fiddler crabs (Uca spp.) through bioturbatory activities in the coastal belt of East Midnapore, West Bengal, India. Journal of the Marine Biological Association of India 56(2): 1-25. (doi: 10.6024/jmbai.2014.56.2.01781-03).

Colpo K.D. & Laura S.L.G., 2017, Temperature Influences the reproduction of fiddler crabs at the southern edge of their distribution. Invertebrate Biology 10(10): 1-13.

Cuculescu M., Hyde D. & Bowler K., 1998, Thermal tolerance of two species of marine crab, Cancer pagurus and Carcinus maenas. J.Therm. Biol. 23: 107–110.

Cumillaf J.P., Blanc J., Paschke K., Gebauer P., Diaz F., Re Denisse, Chimal M.E., Vasquez J. & Rosas C., 2016, Thermal biology of the sub-polar-temperate estuarine crab Hemigrapus crenulatus (Crustacea: Decapoda: Varunidae). The Company of Biologist Ltd. Biology Open 5: 220-228.

Dabruzzi T.F., Bennett W.A. & Fangue N.A., 2017, Thermal ecology of red lionfish Pterois volitans from Southeast Sulawesi, Indonesia, with comparisons to other Scorpaenidae. Journal Aquatic Biology 26: 1-14.

Darnell M.Z. & Munguia P., 2011, Thermoregulation as an Alternate Function of the Sexually Dimorphic Fiddler Crab Claw, University of Chicago. The American Naturalist 178(3): 419-428.

Darnell M.Z., Nicholson H.S. & Munguia P., 2015, Thermal ecology of fiddler crabs Uca panacea: Thermal constraints and organismal responses. Journal of Thermal Biology 52: 157-165.

Darnell M.Z. & Darnell K.M., 2018, Geographic variation in thermal tolerance and morphology in a fiddler crab sister-species pair. Marine Biology: 165:26.

Edney E.B., 1961, The water and heat relationships of Fiddler crabs (Uca spp.). Transactions of the Royal Society of South Africa 36(2): 71-91.

Eme J. & Bennett W.A., 2009, Critical thermal tolerance polygons of tropical marine fishes from Sulawesi, Indonesia. Journal of Thermal Biology 34: 220-225.

Faria A.C., Faleiros R.O., Brayner A.A., Alves L.C., Bianchini A., Romero C., Buranelli R.C., Mantelatto L.C. & McNamara J.C., 2016, Macroevolution of thermal tolerance in intertidal crabs from Neotropical provinces: A phylogenetic comparative evaluation of critical limits. WILEY Ecology and Evolution: 1-10.

Fry F.E.J., 1947, Effects of the environment on animal activity. Univ. Toronto Stud. Biol. Ser. 55, Publcation of the Ontario Fisheries Research Laboratory 68:5-62.

Henderson S., Marsham S. & Bennett W.A., 2015, Thermal acclimation dynamics in Fiddler crabs. Marine Biology, Newcastle University, UK. (, [Accessed on 16th September 2018].

Hochachka P.W. & Somero G.N., 2002, Biochemical adaptation. Oxford University Press, New York, NY.

Karyawati T., Hartati R. & Rudiana E. 2004. Oxygen Consumption of Black Sea Cucumber (Holothuria atra) in Static and Dynamic Systems. Marine Science, Diponegoro University 9(3): 169-173.

Koch V. & Wolff M., 2002, Energy budget and ecological role of mangrove epibenthos in the Caeté estuary, North Brazil. Marine Ecology Progress Series 228: 119–130.

Kutty M.N., 1981, Energy metabolism in mullet, [in:] O.H. Oren (ed.), Aquaculture of grey mullets. Cambridge University Press, London: 219–253.

Laevastu T. & Hela I., 1970, Fisheries Oceanography. London: Fishing News, 238 pages.

Lighton J.R.B., 2008, Constant volume and constant pressure respirometry. Oxford Scholarship Online Monographs 12: 7-18.

Lutterschmidt W.I. & Hutchison V.H., 1997, The critical thermal maximum: history and critique. Can. J. Zool. 75: 1561–1574.

Madeira D., Dias M., Roma J., Cabral H., Diniz M., Narciso L. & Vinagre C., 2013, Critical Thermal Maximum of Coastal Organisms of the Portuguese Coas. University of Lisbon, Lisbon.

Mat A.M., Dunster D.P., Sbragaglia V., Aguzzi J. & de la Iglesia H.O., 2017, Influence of temperature on daily locomotor activity in the crab Uca pugilator. PLOS ONE 12(4): e0175403.

Meyer-Rochow V.B., 2013, Thermal pollution: general effects and effects on cellular membranes and organelles in particular. Research Signpost Publishing, Trivandrum: 1-34.

Mokhtari M., Ghaffar M.A., Usup G. & Cob Z.C., 2015, Determination of key environmental factors responsible for distribution patterns of fiddler crabs in a tropical mangrove ecosystem. Plos One 10(1): e0117467.

Morrison P.R., 2009, An automatic manometric respirometer. Review of Scientific Instruments 2: 264-267

NOAA National Climate Data Center, 2018, [Accessed on 21st May 2018].

Paladino F.V., Spotila J.R., Schubauer J.P. & Kowalski K.T., 1980, The critical thermal maximum: a technique used to elucidate physiological stress and adaptation in fishes. Rev. Can. Biol. 39(2): 115-122.

Pratiwi R., 2010, Biology dan ecology of Uca spp. (Crustacea: Decapoda: Ocypodidae) in mangrove areas in Mahakam Delta, East Kalimantan. Neptunus 6(1): 50-59.

Precht H., Christophersen J. & Larcher W., 1973, Temperature and life. Springer-Verlag, New York, NY.

Sarma K., Pal A.K., Ayyappan S., Das T., Manush S.M., Debnath D. & Baruah K., 2008, Acclimation of Anabas testudineus (Bloch) to three test temperatures influences thermal tolerance and oxygen consumption. Fish Physiology and Biochemistry 36: 85-90.

Saher N. U. & Qureshi N. A., 2012, Effect of temperature on cheliped regeneration and surviving rate in fiddler crab (Uca sp.). Pakistan Journal of Marine Science 21(1&2): 1-12.

Schmidt-Nielsen K., 1997, Animal physiology: adaptation and environment, 5th edn. Cambridge University Press, Cambridge.

Thomas C. & Blum K.L., 2010, Importance of the fiddler crab Uca pugnax to salt marsh soil organic matter accumulation. University of Virginia, Marine Ecology Progress Series: 412.

Unsworth R.K.F., Wylie E., Bell J.J. & Smith D.J., 2007, Diel tropich structuring of seagrass bed fish assemblages in the Wakatobi Marine National Park, Indonesia. Estuarine Coastal and Shelf Science 72: 81-88.

Varo I., Taylor A.C. & Amat F., 1993, Comparison of Two Methods for Measuring The Rates of Oxygen Consumption of Small Aquatic Animals (Artemia). Department of Zoology, University Glasgow, UK, 106A (3): 551-555.

Wieser W., 1973. Effect of Temperature on Ectothermic Organisms. Springer-Verlag Berlin, 298 pages.

Wolff M., Koch V. & Isaac V., 2000, A trophic flow model of the Caeté mangrove estuary, North Brazil, with considerations of the sustainable use of its resources. Estuarine Coastal and Shelf Science 50: 789–80.

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