Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern?

Current evidence suggests that sexual size dimorphism (SSD) reflects the male and female adaptation to their different reproductive roles. Belostoma and Lethocerus species, included in Belostomatidae, present different kinds of paternal care. Females of Belostoma Latreille species lay their eggs on...

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Detalles Bibliográficos
Autores principales: Iglesias, M.S., Crespo, F.A., Valverde, A.D.C.
Formato: JOUR
Materias:
Belostomatidae
Giant water bugs
Heteroptera
Morphometry
Belostoma
Hexapoda
Lethocerus
Lethocerus annulipes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13438786_v15_n2_p155_Iglesias
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_13438786_v15_n2_p155_Iglesias
record_format dspace
spelling todo:paper_13438786_v15_n2_p155_Iglesias2023-10-03T16:09:46Z Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern? Iglesias, M.S. Crespo, F.A. Valverde, A.D.C. Belostomatidae Giant water bugs Heteroptera Morphometry Belostoma Belostomatidae Heteroptera Hexapoda Lethocerus Lethocerus annulipes Current evidence suggests that sexual size dimorphism (SSD) reflects the male and female adaptation to their different reproductive roles. Belostoma and Lethocerus species, included in Belostomatidae, present different kinds of paternal care. Females of Belostoma Latreille species lay their eggs on the back of males. Males carry, aerate and protect the clutch until hatching, which is critical for offspring survival. Males of Lethocerus Mayr species exhibit some parental care behavior but do not carry the eggs. The genera are nearly related. We studied and compared the SSD patterns of B.oxyurum (Dufour), B.micantulum (Stål), B.elegans (Mayr), B.bifoveolatum Spinola, B.gestroi Montandon and Lethocerus annulipes (Herrich-Schäffer) by means of a multivariate approach to distinguish selection targets in different components of size. Morphometric analysis revealed that SSD patterns vary among traits and that the arrangements are similar in Belostoma species, showing a common trend under resembling selective mechanisms. The widespread SSD trend in insects is that all components of body size are biased towards females, generally related to a fecundity advantage, a pattern now also detected in L.annulipes. We found in Belostoma species that the male has relatively longer middle and hind legs. We propose that SSD in hind legs biased towards males is a selective response for paternal care; they denote a brood-adapted morphology. The middle leg enlargement may be an associated response to maintain effective locomotion. © 2011 The Entomological Society of Japan. Fil:Crespo, F.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Valverde, A.D.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13438786_v15_n2_p155_Iglesias
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Belostomatidae
Giant water bugs
Heteroptera
Morphometry
Belostoma
Belostomatidae
Heteroptera
Hexapoda
Lethocerus
Lethocerus annulipes
spellingShingle Belostomatidae
Giant water bugs
Heteroptera
Morphometry
Belostoma
Belostomatidae
Heteroptera
Hexapoda
Lethocerus
Lethocerus annulipes
Iglesias, M.S.
Crespo, F.A.
Valverde, A.D.C.
Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern?
topic_facet Belostomatidae
Giant water bugs
Heteroptera
Morphometry
Belostoma
Belostomatidae
Heteroptera
Hexapoda
Lethocerus
Lethocerus annulipes
description Current evidence suggests that sexual size dimorphism (SSD) reflects the male and female adaptation to their different reproductive roles. Belostoma and Lethocerus species, included in Belostomatidae, present different kinds of paternal care. Females of Belostoma Latreille species lay their eggs on the back of males. Males carry, aerate and protect the clutch until hatching, which is critical for offspring survival. Males of Lethocerus Mayr species exhibit some parental care behavior but do not carry the eggs. The genera are nearly related. We studied and compared the SSD patterns of B.oxyurum (Dufour), B.micantulum (Stål), B.elegans (Mayr), B.bifoveolatum Spinola, B.gestroi Montandon and Lethocerus annulipes (Herrich-Schäffer) by means of a multivariate approach to distinguish selection targets in different components of size. Morphometric analysis revealed that SSD patterns vary among traits and that the arrangements are similar in Belostoma species, showing a common trend under resembling selective mechanisms. The widespread SSD trend in insects is that all components of body size are biased towards females, generally related to a fecundity advantage, a pattern now also detected in L.annulipes. We found in Belostoma species that the male has relatively longer middle and hind legs. We propose that SSD in hind legs biased towards males is a selective response for paternal care; they denote a brood-adapted morphology. The middle leg enlargement may be an associated response to maintain effective locomotion. © 2011 The Entomological Society of Japan.
format JOUR
author Iglesias, M.S.
Crespo, F.A.
Valverde, A.D.C.
author_facet Iglesias, M.S.
Crespo, F.A.
Valverde, A.D.C.
author_sort Iglesias, M.S.
title Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern?
title_short Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern?
title_full Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern?
title_fullStr Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern?
title_full_unstemmed Is parental care behavior in Belostoma species an evolutionary cause for their common sexual size dimorphism pattern?
title_sort is parental care behavior in belostoma species an evolutionary cause for their common sexual size dimorphism pattern?
url http://hdl.handle.net/20.500.12110/paper_13438786_v15_n2_p155_Iglesias
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AT crespofa isparentalcarebehaviorinbelostomaspeciesanevolutionarycausefortheircommonsexualsizedimorphismpattern
AT valverdeadc isparentalcarebehaviorinbelostomaspeciesanevolutionarycausefortheircommonsexualsizedimorphismpattern
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