Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes

Detalhes bibliográficos
Autor(a) principal: Bock, Brian C.
Data de Publicação: 2010
Outros Autores: Zapata, Ana María, Páez, Vivian P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Papéis Avulsos de Zoologia (Online)
Texto Completo: https://www.revistas.usp.br/paz/article/view/33956
Resumo: We compared adult survivorships in two populations of the lizard Anolis mariarum with different mean and asymptotic body sizes to examine one prediction of age-specific mortality theory; that populations that experience higher adult mortality should exhibit earlier maturation and smaller adult body sizes. We used a maximum likelihood approach to evaluate different survivorship models and model-averaging to estimate survivorship and capture probabilities for each site and sex. Relative tail length did not affect survivorship rates of adults in these two populations, but body size was related to survivorship, with the largest individuals at the time of first capture having lower survivorship rates, so body size was included as a covariate in some of the models examined. Analyses revealed that males at both sites had higher survivorships than females, but there were no differences among the sites in survivorship rates or capture probabilities for either sex. The differences in body sizes documented for these sites still could represent life history adaptations to differences among the sites in mortality rates in the egg or juvenile stages of the life cycle, or may represent a case of phenotypic plasticity to differing environmental conditions, but they appear not to be related to differences in adult survivorships. The estimates of annual survivorships (11.7% to 21.2%) were high for a small, mainland Anolis, and this is the first report of survivorships of male anoles exceeding those of females.
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spelling Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes SurvivorshipBody sizeSex differencesSupervivenciaTamaño corporalDiferencias sexuales We compared adult survivorships in two populations of the lizard Anolis mariarum with different mean and asymptotic body sizes to examine one prediction of age-specific mortality theory; that populations that experience higher adult mortality should exhibit earlier maturation and smaller adult body sizes. We used a maximum likelihood approach to evaluate different survivorship models and model-averaging to estimate survivorship and capture probabilities for each site and sex. Relative tail length did not affect survivorship rates of adults in these two populations, but body size was related to survivorship, with the largest individuals at the time of first capture having lower survivorship rates, so body size was included as a covariate in some of the models examined. Analyses revealed that males at both sites had higher survivorships than females, but there were no differences among the sites in survivorship rates or capture probabilities for either sex. The differences in body sizes documented for these sites still could represent life history adaptations to differences among the sites in mortality rates in the egg or juvenile stages of the life cycle, or may represent a case of phenotypic plasticity to differing environmental conditions, but they appear not to be related to differences in adult survivorships. The estimates of annual survivorships (11.7% to 21.2%) were high for a small, mainland Anolis, and this is the first report of survivorships of male anoles exceeding those of females. Comparamos las sobrevivencias de los adultos en dos poblaciones de la lagartija Anolis mariarum con distintos promedio y asíntotas de sus tamaños corporales, para examinar una predicción de la teoría de mortalidad específica de edad; que las poblaciones que experimentan mayor mortalidad de los adultos deben exhibir maduración sexual más temprana y menores tamaños corporales en los adultos. Utilizamos la técnica de máxima verosimilitud para evaluar diferentes modelos de sobrevivencia y una técnica de modelopromediado para estimar sobrevivencia y probabilidades de recaptura para cada sexo y sitio. La longitud relativa de la cola no afectó las tasas de sobrevivencia de los adultos en estas poblaciones, pero el tamaño corporal estuvo relacionado con la sobrevivencia, siendo los individuos más grandes en el momento de la primera captura los que presentaron las tasas de sobrevivencia más bajas; por lo tanto, el tamaño corporal fue incluido como una covariable en algunos de los modelos examinados. Los análisis revelaron que los machos de ambos sitios presentan mayores sobrevivencias que las hembras, pero no encontramos diferencias entre los sitios entre las tasas de sobrevivencia o las probabilidades de captura para cada sexo. Aún así, las diferencias documentadas en los tamaños corporales entre estos sitios pueden representar adaptaciones en las historias de vida ante diferentes tasas de mortalidad en las clases de edad tempranas como huevos o juveniles en cada sitio, o por otra parte puede representar un caso de plasticidad fenotípica ante diferentes condiciones ambientales, las cuales no parecen estar relacionadas con diferencias en las sobrevivencias de los adultos. Los estimativos de sobrevivencia anual (11.7% a 21.2%) fueron altos para este Anolis continental de pequeño tamaño. Este es el primer reporte para el género en que la sobrevivencia de los machos excede a la de las hembras. Universidade de São Paulo (USP), Museu de Zoologia (MZUSP).2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/paz/article/view/3395610.1590/S0031-10492010000300001Papéis Avulsos de Zoologia; v. 50 n. 3 (2010); 43-50 Papéis Avulsos de Zoologia; Vol. 50 Núm. 3 (2010); 43-50 Papéis Avulsos de Zoologia; Vol. 50 No. 3 (2010); 43-50 1807-02050031-1049reponame:Papéis Avulsos de Zoologia (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/paz/article/view/33956/36687Bock, Brian C.Zapata, Ana MaríaPáez, Vivian P.info:eu-repo/semantics/openAccess2012-07-20T02:43:21Zoai:revistas.usp.br:article/33956Revistahttps://www.revistas.usp.br/pazPUBhttps://www.revistas.usp.br/paz/oaipublicacaomz@usp.br ; einicker@usp.br1807-02050031-1049opendoar:2023-01-12T16:41:38.749056Papéis Avulsos de Zoologia (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
title Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
spellingShingle Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
Bock, Brian C.
Survivorship
Body size
Sex differences
Supervivencia
Tamaño corporal
Diferencias sexuales
title_short Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
title_full Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
title_fullStr Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
title_full_unstemmed Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
title_sort Survivorship rates of adult Anolis mariarum (Squamata: Polychrotidae) in two populations with differing mean and asymptotic body sizes
author Bock, Brian C.
author_facet Bock, Brian C.
Zapata, Ana María
Páez, Vivian P.
author_role author
author2 Zapata, Ana María
Páez, Vivian P.
author2_role author
author
dc.contributor.author.fl_str_mv Bock, Brian C.
Zapata, Ana María
Páez, Vivian P.
dc.subject.por.fl_str_mv Survivorship
Body size
Sex differences
Supervivencia
Tamaño corporal
Diferencias sexuales
topic Survivorship
Body size
Sex differences
Supervivencia
Tamaño corporal
Diferencias sexuales
description We compared adult survivorships in two populations of the lizard Anolis mariarum with different mean and asymptotic body sizes to examine one prediction of age-specific mortality theory; that populations that experience higher adult mortality should exhibit earlier maturation and smaller adult body sizes. We used a maximum likelihood approach to evaluate different survivorship models and model-averaging to estimate survivorship and capture probabilities for each site and sex. Relative tail length did not affect survivorship rates of adults in these two populations, but body size was related to survivorship, with the largest individuals at the time of first capture having lower survivorship rates, so body size was included as a covariate in some of the models examined. Analyses revealed that males at both sites had higher survivorships than females, but there were no differences among the sites in survivorship rates or capture probabilities for either sex. The differences in body sizes documented for these sites still could represent life history adaptations to differences among the sites in mortality rates in the egg or juvenile stages of the life cycle, or may represent a case of phenotypic plasticity to differing environmental conditions, but they appear not to be related to differences in adult survivorships. The estimates of annual survivorships (11.7% to 21.2%) were high for a small, mainland Anolis, and this is the first report of survivorships of male anoles exceeding those of females.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/paz/article/view/33956
10.1590/S0031-10492010000300001
url https://www.revistas.usp.br/paz/article/view/33956
identifier_str_mv 10.1590/S0031-10492010000300001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/paz/article/view/33956/36687
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo (USP), Museu de Zoologia (MZUSP).
publisher.none.fl_str_mv Universidade de São Paulo (USP), Museu de Zoologia (MZUSP).
dc.source.none.fl_str_mv Papéis Avulsos de Zoologia; v. 50 n. 3 (2010); 43-50
Papéis Avulsos de Zoologia; Vol. 50 Núm. 3 (2010); 43-50
Papéis Avulsos de Zoologia; Vol. 50 No. 3 (2010); 43-50
1807-0205
0031-1049
reponame:Papéis Avulsos de Zoologia (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Papéis Avulsos de Zoologia (Online)
collection Papéis Avulsos de Zoologia (Online)
repository.name.fl_str_mv Papéis Avulsos de Zoologia (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv publicacaomz@usp.br ; einicker@usp.br
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