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Roggero A, Alù D, Laini A, Rolando A, Palestrini C. Color polymorphism and mating trends in a population of the alpine leaf beetle Oreina gloriosa. PLoS One 2024; 19:e0298330. [PMID: 38530852 DOI: 10.1371/journal.pone.0298330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 01/18/2024] [Indexed: 03/28/2024] Open
Abstract
The bright colors of Alpine leaf beetles (Coleoptera, Chrysomelidae) are thought to act as aposematic signals against predation. Within the European Alps, at least six species display a basal color of either blue or green, likely configuring a classic case of müllerian mimicry. In this context, intra-population color polymorphism is paradoxical as the existence of numerous color morphs might hamper the establishment of a search image in visual predators. Assortative mating may be one of the main factors contributing to the maintenance of polymorphic populations. Due to the marked iridescence of these leaf beetles, the perceived color may change as the viewing or illumination angle changes. The present study, conducted over three years, involved intensive sampling of a population of Oreina gloriosa from the Italian Alps and applied colorimetry and a decision tree method to identify the color morphs in an objective manner. The tertiary sex ratio of the population was biased in favor of males, suggesting that viviparous females hide to give birth. Seven color morphs were identified, and their frequencies varied significantly over the course of the study. Three different analyses of mating (JMating, QInfomating, and Montecarlo simulations) recognized a general trend for random mating which coexists with some instances of positive and negative assortative mating. This could help explain the pre-eminence of one morph (which would be favored because of positive selection due to positive assortative mating) in parallel with the persistence of six other morphs (maintained due to negative assortative mating).
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Affiliation(s)
- Angela Roggero
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Daniele Alù
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Alex Laini
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Antonio Rolando
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
| | - Claudia Palestrini
- Department of Life Sciences and Systems Biology, University of Turin, Torino, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
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Yoshida K, Setogawa T, Sato T, Yamada M, Sato T, Narita K, Matsumoto A, Tomiyama T. Male-biased sex ratio in the crawling individuals of an invasive naticid snail during summer: implications for population management. Sci Rep 2022; 12:7911. [PMID: 35550591 PMCID: PMC9098859 DOI: 10.1038/s41598-022-12144-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 05/06/2022] [Indexed: 11/09/2022] Open
Abstract
The naticid snail Laguncula pulchella is an invasive species that preys on clams in tidal flats and has serious impacts on clam fisheries in Japan. Laguncula pulchella burrow in sand, but often crawl on sediment surfaces during low tide. We investigated seasonal changes in the abundance and sex ratio of crawling L. pulchella during the daytime at Matsukawaura Lagoon, Japan, from March to October from 2015 to 2019. The density of crawling individuals peaked in July. The sex ratio of crawling individuals varied with months and years but was significantly biased towards males during the main copulation period (July–August); males accounted for 77–98% of the mature crawling individuals (≥ 25 mm shell height). The somatic condition of mature males declined from June to August, whereas that of females was constant during this period. These results indicate that mature males actively come to the sand surface during low tide to search for females for copulation from July to August. Fishermen make efforts to remove crawling individuals in summer, but the male-biased sex ratio must also be considered for effective population control of this species.
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Affiliation(s)
- Kazuki Yoshida
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8528, Japan
| | - Tomoka Setogawa
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8528, Japan
| | - Toshiyuki Sato
- Fukushima Prefectural Research Institute of Fisheries Resources, Soma, Fukushima, 976-0005, Japan
| | - Manabu Yamada
- Fukushima Prefectural Research Institute of Fisheries Resources, Soma, Fukushima, 976-0005, Japan
| | - Tatsuma Sato
- Fukushima Prefectural Research Institute of Fisheries Resources, Soma, Fukushima, 976-0005, Japan
| | - Kaoru Narita
- Fukushima Prefectural Research Institute of Fisheries Resources, Soma, Fukushima, 976-0005, Japan
| | - Akira Matsumoto
- Fukushima Prefectural Research Institute of Fisheries Resources, Soma, Fukushima, 976-0005, Japan
| | - Takeshi Tomiyama
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8528, Japan.
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Maltseva AL, Varfolomeeva MA, Lobov AA, Tikanova PO, Repkin EA, Babkina IY, Panova M, Mikhailova NA, Granovitch AI. Premating barriers in young sympatric snail species. Sci Rep 2021; 11:5720. [PMID: 33707514 PMCID: PMC7952697 DOI: 10.1038/s41598-021-84407-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/15/2021] [Indexed: 01/04/2023] Open
Abstract
Sympatric coexistence of recently diverged species raises the question of barriers restricting the gene flow between them. Reproductive isolation may be implemented at several levels, and the weakening of some, e.g. premating, barriers may require the strengthening of the others, e.g. postcopulatory ones. We analysed mating patterns and shell size of mates in recently diverged closely related species of the subgenus Littorina Neritrema (Littorinidae, Caenogastropoda) in order to assess the role of premating reproductive barriers between them. We compared mating frequencies observed in the wild with those expected based on relative densities using partial canonical correspondence analysis. We introduced the fidelity index (FI) to estimate the relative accuracy of mating with conspecific females and precopulatory isolation index (IPC) to characterize the strength of premating barriers. The species under study, with the exception of L. arcana, clearly demonstrated preferential mating with conspecifics. According to FI and IPC, L. fabalis and L. compressa appeared reliably isolated from their closest relatives within Neritrema. Individuals of these two species tend to be smaller than those of the others, highlighting the importance of shell size changes in gastropod species divergence. L. arcana males were often found in pairs with L. saxatilis females, and no interspecific size differences were revealed in this sibling species pair. We discuss the lack of discriminative mate choice in the sympatric populations of L. arcana and L. saxatilis, and possible additional mechanisms restricting gene flow between them.
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Affiliation(s)
- Arina L Maltseva
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia.
| | - Marina A Varfolomeeva
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia
| | - Arseniy A Lobov
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia.,Laboratory of Regenerative Biomedicine, Institute of Cytology Russian Academy of Sciences, St Petersburg, Russia
| | - Polina O Tikanova
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia.,Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA), Vienna, Austria
| | - Egor A Repkin
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia
| | - Irina Y Babkina
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia
| | - Marina Panova
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia.,Department of Marine Sciences - Tjärnö, University of Gothenburg, Gothenburg, Sweden
| | - Natalia A Mikhailova
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia.,Centre of Cell Technologies, Institute of Cytology Russian Academy of Sciences, St Petersburg, Russia
| | - Andrei I Granovitch
- Department of Invertebrate Zoology, St Petersburg State University, St Petersburg, Russia
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Matsumoto Y. Effects of mucus trail following on the distance between individuals of opposite sex and its influence on the evolution of the trait in the Ezo abalone Haliotis discus hannai. PeerJ 2020; 8:e8710. [PMID: 32195052 PMCID: PMC7069403 DOI: 10.7717/peerj.8710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 02/07/2020] [Indexed: 11/20/2022] Open
Abstract
Background Aggregation affects the fertilization rate of species that utilize external fertilization. However, the process of aggregation has not been studied in detail, using either theoretical models or real world observations. We used the Ezo abalone Haliotis discus hannai as a model animal species to evaluate whether mucus trail following (MTF) facilitates aggregation by reducing the distance between members of opposite sexes. We also examined whether the fertilization rate increase with mucus-trail-following is an evolutionary driving force in mucus following behavior. Methods We used a y-maze to test whether H. discus hannai follows the mucus trails of other individuals. Distances between members of the opposite sex of MTF individuals were compared to non-MTF individuals using an individual-based model (IBM) consistent with the behavior of H. discus hannai. To examine whether MTF behavior evolved to reduce distances between members of the opposite sex, we constructed simple population genetic models of a diploid population with nonoverlapping, discrete generations. Results Haliotis discus hannai chose the y-maze arm with the mucus trail more frequently than the one without, regardless of the sex of the abalone that secreted the mucus or the reproductive season. In the IBM the distance between opposite sexes was significantly reduced by MTF behavior; however, the difference in distances between opposite sex compared to same sex individuals was only several centimeters. Simple population genetic models indicated that the aggregating effect of MTF between the opposite sex members could be an evolutionary driving force. Conclusions These results suggest that observed MTF behavior might have evolved as a mechanism to increase the fertilization rates although other factors could also be involved.
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Affiliation(s)
- Yukio Matsumoto
- Miyako Laboratory, Tohoku National Fisheries Research Institute, Japan Fisheries Research and Education Agency, Miyako, Iwate, Japan
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Zachos LG, Platt BF. Actuopaleoichnology of a modern Bay of Fundy macro-tidal flat: analogy with a Mississippian tidal flat deposit (Hartselle Sandstone) from Alabama. PeerJ 2019; 7:e6975. [PMID: 31149409 PMCID: PMC6534113 DOI: 10.7717/peerj.6975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/17/2019] [Indexed: 11/20/2022] Open
Abstract
Trace fossil zonation in the Hartselle Sandstone of Mississippian age (Chesterian: Visean-Serpukhovian) exposed on Fielder Ridge, Alabama is compared with modern macro-tidal flat ichnocoenoses on the Bay of Fundy at Lubec, Maine, and demonstrated to be analogous by sedimentologic and ichnotaxonomic criteria. The modern flat has minimal influence from either waves or freshwater influx, and can be divided into five distinct ichnocoenoses, characterized by surface traces (epichnia) and four sedimentologic facies defined by gross grain texture or hydrodynamic characteristics, but lacking significant surface traces. Several characteristics of tidal flat deposits in a fetch-limited, marine (i.e., non-estuarine), meso- to macro-tidal regime can be used to recognize similar environments as old as the late Paleozoic. These criteria include (1) limited influence of wind and waves on the depositional environment, (2) lack of significant freshwater influence and therefore any persistent brackish environments, (3) a distinct spatial distribution of microenvironments defined by substrate and exposure period, (4) high diversity of epichnial traces directly associated with microenvironments across the tidal flat, (5) generally low degree of reworking of traces by bioturbation but high degree of reworking by tidal currents, and (6) preservation of traces of predation and scavenging behavior on an exposed surface. These features, together with the regional depositional pattern of the Hartselle Sandstone interpreted as tide-influenced bars and shoals, support a meso- to macro-tidal interpretation of the depositional environment.
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Affiliation(s)
- Louis G Zachos
- Institut für Evolutionsbiologie und Ökologie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn, Germany.,Department of Geology & Geological Engineering, University of Mississippi, University, MS, USA.,Center for Biodiversity & Conservation Research, University of Mississippi, University, MS, USA
| | - Brian F Platt
- Department of Geology & Geological Engineering, University of Mississippi, University, MS, USA.,Center for Biodiversity & Conservation Research, University of Mississippi, University, MS, USA
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Ng TP, Rolán-Alvarez E, Dahlén SS, Davies MS, Estévez D, Stafford R, Williams GA. The causal relationship between sexual selection and sexual size dimorphism in marine gastropods. Anim Behav 2019. [DOI: 10.1016/j.anbehav.2018.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Estévez D, Ng TPT, Fernández-Meirama M, Voois JM, Carvajal-Rodríguez A, Williams GA, Galindo J, Rolán-Alvarez E. A novel method to estimate the spatial scale of mate choice in the wild. Behav Ecol Sociobiol 2018. [DOI: 10.1007/s00265-018-2622-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Weldon PJ. Receiver-error in deception, including mimicry: making the leap from inter- to intraspecific domains. Biol J Linn Soc Lond 2016. [DOI: 10.1111/bij.12905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paul J. Weldon
- Smithsonian Conservation Biology Institute; National Zoological Park; 1500 Remount Road Front Royal VA 22630 USA
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Yasuda CI, Koga T. Importance of weapon size in all stages of male–male contests in the hermit crab Pagurus minutus. Behav Ecol Sociobiol 2016. [DOI: 10.1007/s00265-016-2221-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Johannesson K, Saltin SH, Charrier G, Ring AK, Kvarnemo C, André C, Panova M. Non-random paternity of offspring in a highly promiscuous marine snail suggests postcopulatory sexual selection. Behav Ecol Sociobiol 2016. [DOI: 10.1007/s00265-016-2143-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
The marine snail Littorina saxatilis is a common inhabitant of intertidal shores of the north Atlantic. It is amazingly polymorphic and forms reproductively isolated ecotypes in microhabitats where crabs are either present and wave action is less furious, or where waves are strong and crabs are absent. Decades of research have unveiled much of the ecological and demographic context of the formation of crab‐ and wave‐ecotype snails showing important phenotypic differences being inherited, differential selection being strong over adjacent microhabitats, local dispersal being restricted, and long‐distance transports of individuals being rare. In addition, strong assortative mating of ecotypes has been shown to include a component of male mate preference based on female size. Several studies support ecotypes being diverged locally and under gene flow in a parallel and highly replicated fashion. The high level of replication at various levels of independence (from local to pan‐European scale) provides excellent opportunities to investigate the detailed mechanisms of microevolution, including the formation of barriers to gene flow. Current investigations benefit from a draft reference genome and an integration of genomic approaches, modelling and experiments to unveil molecular and ecological components of speciation and their interactions.
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Affiliation(s)
- Kerstin Johannesson
- Department of Marine Sciences - Tjärnö University of Gothenburg Strömstad Sweden
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Ng TPT, Saltin SH, Davies MS, Johannesson K, Stafford R, Williams GA. Snails and their trails: the multiple functions of trail-following in gastropods. Biol Rev Camb Philos Soc 2013; 88:683-700. [DOI: 10.1111/brv.12023] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 01/04/2013] [Accepted: 01/07/2013] [Indexed: 12/01/2022]
Affiliation(s)
- Terence P. T. Ng
- The Swire Institute of Marine Science and School of Biological Sciences; The University of Hong Kong; Hong Kong SAR; China
| | - Sara H. Saltin
- Department of Biological and Environmental Sciences-Tjärnö; University of Gothenburg; SE-452 96; Strömstad; Sweden
| | - Mark S. Davies
- Faculty of Applied Sciences; University of Sunderland; Sunderland; SR1 3SD; UK
| | - Kerstin Johannesson
- Department of Biological and Environmental Sciences-Tjärnö; University of Gothenburg; SE-452 96; Strömstad; Sweden
| | - Richard Stafford
- Institute of Biomedical and Environmental Science and Technology (iBEST); University of Bedfordshire; Luton; LU1 3JU; UK
| | - Gray A. Williams
- The Swire Institute of Marine Science and School of Biological Sciences; The University of Hong Kong; Hong Kong SAR; China
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Ng TP, Davies MS, Stafford R, Williams GA. Mucus trail following as a mate-searching strategy in mangrove littorinid snails. Anim Behav 2011. [DOI: 10.1016/j.anbehav.2011.05.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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