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Vol. 60, 2021
(update: 2021.06.17; 07.30)
Thermal Physiological
Performance and Thermal Metabolic Scope of the Whelk Kelletia kelletii (Forbes, 1850)
(Gastropoda: Neptuneidae) Acclimated to Different Temperatures
Fernando
Díaz1,*,§ , Ana Denise Re-Araujo1,§,
Eugenio Carpizo-Ituarte2, Zaul Garcia-Esquivel2,
Ernesto Larios-Soriano1, Leonel Perez-Carrasco1,
and Ernesto Lerma1
doi:10.6620/ZS.2021.60-44
1Laboratorio
de Ecofisiología de Organismos Acuáticos. Departamento de Biotecnología
Marina, Centro de Investigación Científica y de
Educación Superior de Ensenada (CICESE). Carretera Ensenada-Tijuana #
3918 Ensenada, Baja California, Mexico. *Correspondence: E-mail:
fdiaz@cicese.mx (Díaz).
E-mail: denisre@cicese.mx (Re-Araujo);
efnesto.larios.soriano@uabc.edu.mxs (Larios-Soriano); lperez@cicese.mx
(Perez-Carrasco); jlerma@cicese.mx (Lerma)
2Instituto de Investigaciones Oceanológicas,
Universidad Autónoma de Baja California. (UABC). Carretera
Ensenada-Tijuana # 3917 Ensenada, Baja California. E-mail:
ecarpizo@uabc.edu.mx (Carpizo-Ituarte); sgarcia@uabc.edu.mx
(Garcia-Esquivel)
§FD and ADRA contributed
equally to this work.
Received 30 April 2020 / Accepted 21 May 2021
Communicated by Benny K.K. Chan
Investigations
of thermal limits are crucial to understanding climate change ecology
because it illuminates how climate will shape future species
distributions. This work determined the preferred temperature, critical
threshold limits represented by the Critical Thermal Maximum (CTMax)
and (CTMin), thermal window, oxygen consumption rate and thermal
metabolic scope of Kelletia kelletii acclimated to 13, 16.0, 19.0 and
22.0 ± 1°C to determine if this species is sensitive to global warming.
The preferred temperature (PT) of Kellet’s whelk was determined using
the acute method. The acclimation temperature significantly affected
the thermal preference of the marine snail (P
< 0.05) and increased from 13.2 to 24.2°C as the acclimation
temperature increased from 13.0 to 22.0°C. The PT was 13.4°C. The
acclimation temperature did not significantly affect the CTMax (P
> 0.05), obtaining a range of 29.2 to 30.2°C. The CTMin had an
interval of 9.2°C, at acclimation temperatures of 13 to 16°C, and
increased significantly (P
< 0.05) at 12.3°C in the acclimation interval of 19–22°C. The
thermal window for the different acclimation temperatures was 163.5°C2.
The oxygen consumption rate of the snails increased significantly (P < 0.05) when the acclimation
temperature increased from 13.0 to 22.0°C, peaking at 63.6 mg of O2
kg-1 h-1 w.w. in snails maintained at the highest
acclimation temperature. The thermal metabolic scope increased
significantly (P < 0.05)
when the acclimation temperature was 13.0°C, with values of 68.7 mg O2
h-1 kg-1 w.w., then decreased significantly (P < 0.05) to 27.9 mg O2
h-1 kg-1
w.w at 32°C. Therefore, the thermal aerobic scope was highest in the
temperatures that K. kelletii preferred. These results may partially
explain their pattern of distribution on the Baja California coast.
Key words: Preferred
temperature, Critical termal limits, Thermal windows, Metabolic
response.
Citation:
Díaz F, Re-Araujo AD, Carpizo-Ituarte E, Garcia-Esquivel Z,
Larios-Soriano E, Perez-Carrasco L, Lerma E. 2021. Thermal
physiological performance and thermal metabolic scope of the whelk Kelletia kelletii (Forbes, 1850)
(Gastropoda: Neptuneidae) acclimated to different temperatures. Zool
Stud 60:44.
doi:10.6620/ZS.2021.60-44
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