Growth patterns of the pan‐European freshwater mussel,Anodonta anatina(Linnaeus, 1758) (Bivalvia: Unionidae), vary with sex and mortality in populations
| Autor: | Marcin Czarnoleski, Katarzyna Zając, Tomasz Müller, Anna Maria Labecka |
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| Rok vydání: | 2021 |
| Předmět: |
life history
0106 biological sciences animal structures Population Zoology growth curves 010603 evolutionary biology 01 natural sciences Dreissena Life history theory 03 medical and health sciences lcsh:QH540-549.5 glochidia brooding education Ecology Evolution Behavior and Systematics Original Research 030304 developmental biology Nature and Landscape Conservation 0303 health sciences education.field_of_study Ecology biology Mussel indeterminate growth Unionidae Bivalvia biology.organism_classification Indeterminate growth energy allocation Zebra mussel lcsh:Ecology |
| Zdroj: | Ecology and Evolution Ecology and Evolution, Vol 11, Iss 6, Pp 2907-2918 (2021) |
| ISSN: | 2045-7758 |
| Popis: | Post‐maturation growth leading to indeterminate growth patterns is widespread in nature. However, its adaptive value is unclear. Life history theory suggests this allocation strategy may be favored by temporal pulses in the intensity of mortality and/or the capacity to produce new tissues.Addressing the origin of indeterminate growth and the variability of growth patterns, we studied the growth of duck mussels, Anodonta anatina, a pan‐European unionid, in 18 Polish lakes. For each population, the sex, size, and age of collected mussels were measured to estimate Bertalanffy's growth curve parameters. We integrated information on A. anatina mortality rates, lake trophy, biofouling by zebra mussels, Dreissena polymorpha, and the prevalence of parasitic trematode larvae to identify selective conditions in lakes.We found two sources of mortality in A. anatina populations, pertaining to adverse effects of zebra mussel biofouling and trophy state on mussel survival. Additionally, populations with heavier biofouling presented a smaller abundance of parasites, indicative of a relationship between filtering intensity and contraction of water‐borne trematode larvae by filtering A. anatina.Consistently for each sex, populations with a greater trophy‐related mortality were characterized in A. anatina by a smaller asymptotic size Lmax, indicative of a life history response to mortality risk involving early maturation at a smaller body size. In all populations, females featured higher mortality and larger asymptotic size versus males.Our findings support a theoretical view that adaptive responses to selection involve adjustments in the lifetime resource allocation patterns. These adjustments should be considered drivers of the origin of indeterminate growth strategy in species taking parental care by offspring brooding in body cavities. We studied the growth of duck mussels, Anodonta anatina, a pan‐European unionid, in 18 Polish lakes representing different trophic conditions. We found two sources of mortality in A. anatina populations, pertaining to adverse effects of zebra mussel biofouling and trophy state on mussel survival. In all populations, females featured higher mortality and larger asymptotic size versus males, and consistently for each sex, populations with a greater trophy‐related mortality were characterized in A. anatina by a smaller asymptotic size, indicative of a life history response to mortality risk involving early maturation at a smaller body size. Our findings support a theoretical view that adaptive responses to selection involve adjustments in the lifetime resource allocation patterns. |
| Databáze: | OpenAIRE |
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