Sexual differences in age-dependent survival and life span of adults in a natural butterfly population
Autor: | Marcin Sielezniew, Ádám Kőrösi, Agata Kostro-Ambroziak |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
Senescence Aging Population dynamics Behavioural ecology media_common.quotation_subject Sexual Behavior Population Longevity lcsh:Medicine 010603 evolutionary biology 01 natural sciences Models Biological Article Sex Factors Abundance (ecology) Animals Polyommatus daphnis education lcsh:Science media_common education.field_of_study Multidisciplinary biology Life span 010604 marine biology & hydrobiology lcsh:R biology.organism_classification Sexual selection Butterfly lcsh:Q Zoology Butterflies Demography |
Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020) |
ISSN: | 2045-2322 |
Popis: | Adult survival and longevity in insects are key life-history traits, but their variation between sexes and individuals in natural populations is largely unexplored. Sexual divergence in senescence, the decline in survival with age is also poorly understood. Based on an intensive mark-recapture dataset of the butterfly Polyommatus daphnis, we aimed to assess whether adult survival is age-dependent, and to estimate life span distribution and abundance of males and females using Cormack-Jolly-Seber and Jolly-Seber models. Female survival slightly increased with date of emergence and slightly decreased with age, while male survival considerably declined with age. Mean life span of females (12.7 days) was ~50% higher than that of males (8.5 days), but two times higher if only the oldest 5% of each sex was considered (39 vs.19 days). Abundance of females (358 ± 14) and males (359 ± 11) was similar, but peak abundance of males preceded that of females by 11 days. Our results suggest that senescence is much more rapid in males than in females in this butterfly, which is in agreement with sexual selection theory. We also conclude that estimating life span distributions provides much more valuable information on the demography of natural populations than simply reporting the mean life span. |
Databáze: | OpenAIRE |
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