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Reproductive plasticity of a Procambarus clarkii population living 10°C below its thermal optimum

Reproductive plasticity of a Procambarus clarkii population living 10°C below its thermal optimum
Reproductive plasticity of a Procambarus clarkii population living 10°C below its thermal optimum
In this study the annual reproductive biology of a Procambarus clarkii (Girard, 1852) population living in an atypical habitat with cold spring waters is investigated by monitoring Gonado-Somatic and Hepato-Somatic Indexes (GSI and HSI) and by performing cytology on ovaries. Despite its known preference for habitats with water temperature from 21 to 30 °C, our results clearly confirm the adaptation of this population to the atypical thermal habitat, characterised by an annual mean water temperature value of 13.32 ±0.08 °C. Maximum gonadal development was reached in August, with maximum GSI median value of 0.64 (instead of reported values even 10 times higher for other
populations), and ovigerous females were found in autumn, with mean realized fecundity of 35 ±7 compared to 285–995 reported from other habitats. Histological analysis was consistent with other studies and allowed us to follow ovarian development at cytological level. The importance of all these results is not to be underestimated: to our knowledge these findings are the first report of the coolest habitat successfully colonized by this species at the present time and so they have to be taken as a warning about the possible range expansion of P.
clarkii also to northern and colder habitats that have few things in common with the native habitat of the species and, up to now, were considered “safe” from the invasion of the red swamp crayfish.
199-208
Peruzza, Luca
c01f028c-1fb4-44a4-83b9-f24698a9c9e5
Piazza, Federica
01b5e547-0569-480b-b1f3-a12ef9b4bee9
Manfrin, Chiara
edc4fd1e-143d-4d3d-814f-2a4ec248145c
Bonzi, Lucrezia
454164f6-b685-4bff-bba3-bc4d3dfa1eb5
Battistella, Silvia
f7cf1d50-6a1b-4fba-8c68-32599a755669
Giulianini, Piero
bd46430e-7831-49d5-9d61-c2b2da284841
Peruzza, Luca
c01f028c-1fb4-44a4-83b9-f24698a9c9e5
Piazza, Federica
01b5e547-0569-480b-b1f3-a12ef9b4bee9
Manfrin, Chiara
edc4fd1e-143d-4d3d-814f-2a4ec248145c
Bonzi, Lucrezia
454164f6-b685-4bff-bba3-bc4d3dfa1eb5
Battistella, Silvia
f7cf1d50-6a1b-4fba-8c68-32599a755669
Giulianini, Piero
bd46430e-7831-49d5-9d61-c2b2da284841

Peruzza, Luca, Piazza, Federica, Manfrin, Chiara, Bonzi, Lucrezia, Battistella, Silvia and Giulianini, Piero (2015) Reproductive plasticity of a Procambarus clarkii population living 10°C below its thermal optimum. Aquatic Invasions, 10 (2), 199-208. (doi:10.3391/ai.2015.10.2).

Record type: Article

Abstract

In this study the annual reproductive biology of a Procambarus clarkii (Girard, 1852) population living in an atypical habitat with cold spring waters is investigated by monitoring Gonado-Somatic and Hepato-Somatic Indexes (GSI and HSI) and by performing cytology on ovaries. Despite its known preference for habitats with water temperature from 21 to 30 °C, our results clearly confirm the adaptation of this population to the atypical thermal habitat, characterised by an annual mean water temperature value of 13.32 ±0.08 °C. Maximum gonadal development was reached in August, with maximum GSI median value of 0.64 (instead of reported values even 10 times higher for other
populations), and ovigerous females were found in autumn, with mean realized fecundity of 35 ±7 compared to 285–995 reported from other habitats. Histological analysis was consistent with other studies and allowed us to follow ovarian development at cytological level. The importance of all these results is not to be underestimated: to our knowledge these findings are the first report of the coolest habitat successfully colonized by this species at the present time and so they have to be taken as a warning about the possible range expansion of P.
clarkii also to northern and colder habitats that have few things in common with the native habitat of the species and, up to now, were considered “safe” from the invasion of the red swamp crayfish.

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More information

Accepted/In Press date: 22 December 2014
e-pub ahead of print date: 19 January 2015

Identifiers

Local EPrints ID: 420568
URI: https://eprints.soton.ac.uk/id/eprint/420568
PURE UUID: 24053c44-9d74-4feb-96a1-aee62178a4c3

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Date deposited: 10 May 2018 16:30
Last modified: 13 Mar 2019 18:32

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