1
|
Azad KN, Alam MNE, Nagata M, Tomano S, Ono H, Sugai K, Hirohashi N. Males conditionally inseminate at three female body locations according to female mating history and female maturity status in a squid. Sci Rep 2024; 14:11702. [PMID: 38777827 PMCID: PMC11111733 DOI: 10.1038/s41598-024-62062-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
In some squids, such as those in the family Loliginidae, upon copulation, females receive and store male-delivered sperm capsules, spermatangia, at two different body locations: the buccal membrane and the distal end of the oviduct. This insemination site dimorphism is associated with alternative reproductive strategies. However, in Loliolus sumatrensis, a species of Loliginidae, the females possess three insemination sites: buccal membrane (BM), basal left IV arm (ARM) and lateral head behind the left eye (EYE), therefore we studied such the unusual phenomena. We developed microsatellite markers and genotyped the paternity of each spermatangium on three sites. We found multiple paternity at every single site and simultaneous usage of all three sites by a few males. The seasonal dynamics of a population in the Seto Inland Sea revealed a set priority for the initial use of insemination sites as BM, followed by ARM and then EYE, whereas the maximum number of stored spermatangia was greater in EYE > ARM > BM. Female maturity status was correlated with the usage pattern of insemination sites but not with the number of stored spermatangia at any insemination site. These results suggest that a male squid inseminates at different locations according to female mating history and female maturity status.
Collapse
Affiliation(s)
- Kamrun Naher Azad
- Graduate School of Natural Science and Technology, Shimane University, Matsue, Japan
- Department of Aquaculture, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md Nur E Alam
- Graduate School of Natural Science and Technology, Shimane University, Matsue, Japan
| | - Makoto Nagata
- Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Satoshi Tomano
- Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan
| | - Hiroki Ono
- Marine Biological Science Section, Education and Research Center for Biological Resources, Faculty of Life and Environmental Science, Shimane University, Matsue, Japan
| | - Kyoko Sugai
- Graduate School of Natural Science and Technology, Shimane University, Matsue, Japan
| | - Noritaka Hirohashi
- Graduate School of Natural Science and Technology, Shimane University, Matsue, Japan.
- Marine Biological Science Section, Education and Research Center for Biological Resources, Faculty of Life and Environmental Science, Shimane University, Matsue, Japan.
| |
Collapse
|
2
|
Strugariu A, Martin RA. Factor in Fear: Interference Competition in Polymorphic Spadefoot Toad Tadpoles and Its Potential Role in Disruptive Selection. Animals (Basel) 2023; 13:ani13071264. [PMID: 37048520 PMCID: PMC10093105 DOI: 10.3390/ani13071264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/02/2023] [Accepted: 04/03/2023] [Indexed: 04/09/2023] Open
Abstract
Disruptive selection arises when extreme phenotypes have a fitness advantage compared to more-intermediate phenotypes. Theory and evidence suggest that intraspecific resource competition is a key driver of disruptive selection. However, while competition can be indirect (exploitative) or direct (interference), the role of interference competition in disruptive selection has not been tested, and most models of disruptive selection assume exploitative competition. We experimentally investigated whether the type of competition affects the outcome of competitive interactions using a system where disruptive selection is common: Mexican spadefoot toads (Spea multiplicata). Spea tadpoles develop into alternative resource-use phenotypes: carnivores, which consume fairy shrimp and other tadpoles, and omnivores, which feed on algae and detritus. Tadpoles intermediate in phenotype have low fitness when competition is intense, as they are outcompeted by the specialized tadpoles. Our experiments revealed that the presence of carnivores significantly decreased foraging behavior in intermediate tadpoles, and that intermediate tadpoles had significantly lower growth rates in interference competition treatments with carnivores but not with omnivores. Interference competition may therefore be important in driving disruptive selection. As carnivore tadpoles are also cannibalistic, the ‘fear’ effect may have a greater impact on intermediate tadpoles than exploitative competition alone, similarly to non-consumptive effects in predator–prey or intraguild relationships.
Collapse
Affiliation(s)
- Alexandru Strugariu
- Department of Exact and Natural Sciences, Institute of Interdisciplinary Research, Alexandru Ioan Cuza University of Iași, 700057 Iași, Romania
| | - Ryan Andrew Martin
- Department of Biology, Case Western Reserve University, Cleveland, OH 44106, USA
| |
Collapse
|
3
|
Aggression induced by ornament similarity is limited to females in a mutually ornamented fish, Betta brownorum. Anim Behav 2022. [DOI: 10.1016/j.anbehav.2022.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
4
|
Batucan LS, Hsu YH, Maliszewski JW, Wang LJ, Lin CP. Novel wing display and divergent agonistic behaviors of two incipient Psolodesmus damselflies. Naturwissenschaften 2021; 108:49. [PMID: 34601627 DOI: 10.1007/s00114-021-01758-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/13/2021] [Accepted: 09/13/2021] [Indexed: 11/25/2022]
Abstract
Sexual selection via male competition is a strong evolutionary force that can drive rapid changes in competitive traits and subsequently lead to population divergence and speciation. Territorial males of many odonates are known to use their colorful wings as visual signals and to perform agonistic displays toward intruders. Psolodesmus mandarinus dorothea and Psolodesmus mandarinus mandarinus are two parapatrically distributed sister damselflies that share similar ecological characteristics but differ markedly in wing coloration. The wings of P. m. dorothea are mostly clear, whereas those of P. m. mandarinus have a large area of black pigmentation and a central white patch. We investigated whether territorial males of the two damselflies at breeding sites display distinct agonistic behaviors associated with their respective wing colors. Behavioral interactions between territorial and intruder males and their wing kinematics were filmed and analyzed for P. m. dorothea in Lienhuachih of central Taiwan, and P. m. mandarinus in Tianxiyuan and Fusan of northern Taiwan. We observed that the P. m. mandarinus males exhibited a novel set of perched wing displays, which was not only absent in its sister P. m. dorothea but also previously unknown in Odonata. At breeding sites, perched rival males of P. m. mandarinus with pigmented wings exhibited escalating agonistic wing-flapping and wing-hitting displays toward each other. In contrast, territorial males of P. m. dorothea with clear wings engaged only in aerial chase or face-to-face hovering when intruder males approached from the air. These results indicate that the two sister P. mandarinus damselflies diverged behaviorally in territorial contests and support the hypothesis of coadaptation on the basis of wing colors and types of wing movement in Odonata. Our findings further suggest that divergent agonistic wing displays may play a pivotal role in the speciation mechanism of P. mandarinus damselflies. The sequential analyses of behavioral characteristics and progression suggest that P. m. mandarinus damselflies likely use mutual assessment of rivals in territorial contests.
Collapse
Affiliation(s)
- Leocris S Batucan
- Department of Life Science, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei, 11677, Taiwan
- Biodiversity Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 11529, Taiwan
| | - Yu-Hsun Hsu
- Department of Life Science, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei, 11677, Taiwan
- Department of Life Science, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Jak W Maliszewski
- Biodiversity Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 11529, Taiwan
| | - Liang-Jong Wang
- Division of Forest Protection, Taiwan Forestry Research Institution, Taipei, 10066, Taiwan
| | - Chung-Ping Lin
- Department of Life Science, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei, 11677, Taiwan.
- Biodiversity Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 11529, Taiwan.
| |
Collapse
|
5
|
Funnell TR, Fialkowski RJ, Dijkstra PD. Social dominance does not increase oxidative stress in a female dominance hierarchy of an African cichlid fish. Ethology 2021. [DOI: 10.1111/eth.13232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tyler R. Funnell
- Department of Biology Central Michigan University Mount Pleasant MI USA
- Quantitative Fisheries Center Department of Fisheries and Wildlife Michigan State University East Lansing MI USA
| | | | - Peter D. Dijkstra
- Department of Biology Central Michigan University Mount Pleasant MI USA
- Neuroscience Program Central Michigan University Mount Pleasant MI USA
- Institute for Great Lakes Research Central Michigan University Mount Pleasant MI USA
| |
Collapse
|
6
|
Jaubet ML, Martinez LE, Saracho Bottero MA, Bazterrica MC. Boccardiella ligerica
, an exotic polychaete in a Southwestern Atlantic coastal lagoon: Morphology and abundance variations. Ecol Res 2020. [DOI: 10.1111/1440-1703.12171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- María Lourdes Jaubet
- Marine and Coastal Research Institute (IIMyC) ‐ National Mar del Plata University and Scientific and Techniques National Research Council (UNMDP‐CONICET) Mar del Plata CC1260 Argentina
- Benthic Bioindicators Research Group, Department of Marine Sciences Faculty of Exact and Natural Sciences (FCEyN) ‐ UNMdP, Argentine Mar del Plata Argentina
| | - Lorena Evangelina Martinez
- Marine and Coastal Research Institute (IIMyC) ‐ National Mar del Plata University and Scientific and Techniques National Research Council (UNMDP‐CONICET) Mar del Plata CC1260 Argentina
- Wetlands and Coastal Environments Research Group Department of Biology, FCEyN Mar del Plata Argentina
| | - María Andrea Saracho Bottero
- Marine and Coastal Research Institute (IIMyC) ‐ National Mar del Plata University and Scientific and Techniques National Research Council (UNMDP‐CONICET) Mar del Plata CC1260 Argentina
- Benthic Bioindicators Research Group, Department of Marine Sciences Faculty of Exact and Natural Sciences (FCEyN) ‐ UNMdP, Argentine Mar del Plata Argentina
| | - María Cielo Bazterrica
- Marine and Coastal Research Institute (IIMyC) ‐ National Mar del Plata University and Scientific and Techniques National Research Council (UNMDP‐CONICET) Mar del Plata CC1260 Argentina
- Wetlands and Coastal Environments Research Group Department of Biology, FCEyN Mar del Plata Argentina
| |
Collapse
|
7
|
DeCasien AR, Sherwood CC, Schapiro SJ, Higham JP. Greater variability in chimpanzee ( Pan troglodytes) brain structure among males. Proc Biol Sci 2020; 287:20192858. [PMID: 32315585 PMCID: PMC7211446 DOI: 10.1098/rspb.2019.2858] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/23/2020] [Indexed: 01/15/2023] Open
Abstract
Across the animal kingdom, males tend to exhibit more behavioural and morphological variability than females, consistent with the 'greater male variability hypothesis'. This may reflect multiple mechanisms operating at different levels, including selective mechanisms that produce and maintain variation, extended male development, and X chromosome effects. Interestingly, human neuroanatomy shows greater male variability, but this pattern has not been demonstrated in any other species. To address this issue, we investigated sex-specific neuroanatomical variability in chimpanzees by examining relative and absolute surface areas of 23 cortical sulci across 226 individuals (135F/91M), using permutation tests of the male-to-female variance ratio of residuals from MCMC generalized linear mixed models controlling for relatedness. We used these models to estimate sulcal size heritability, simulations to assess the significance of heritability, and Pearson correlations to examine inter-sulcal correlations. Our results show that: (i) male brain structure is relatively more variable; (ii) sulcal surface areas are heritable and therefore potentially subject to selection; (iii) males exhibit lower heritability values, possibly reflecting longer development; and (iv) males exhibit stronger inter-sulcal correlations, providing indirect support for sex chromosome effects. These results provide evidence that greater male neuroanatomical variability extends beyond humans, and suggest both evolutionary and developmental explanations for this phenomenon.
Collapse
Affiliation(s)
- Alex R. DeCasien
- Department of Anthropology, New York University, New York, NY, USA
- New York Consortium in Evolutionary Primatology, New York, NY, USA
| | - Chet C. Sherwood
- Department of Anthropology and Center for the Advanced Study of Human Paleobiology, The George Washington University, Washington, DC, USA
| | - Steven J. Schapiro
- Department of Comparative Medicine, The University of Texas MD Anderson Cancer Center, Bastrop, TX, USA
- Department of Experimental Medicine, The University of Copenhagen, Copenhagen, Denmark
| | - James P. Higham
- Department of Anthropology, New York University, New York, NY, USA
- New York Consortium in Evolutionary Primatology, New York, NY, USA
| |
Collapse
|
8
|
Yang Y, Servedio MR, Richards-Zawacki CL. Imprinting sets the stage for speciation. Nature 2019; 574:99-102. [DOI: 10.1038/s41586-019-1599-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 08/26/2019] [Indexed: 11/09/2022]
|
9
|
Green DM. Rarity of Size-Assortative Mating in Animals: Assessing the Evidence with Anuran Amphibians. Am Nat 2019; 193:279-295. [DOI: 10.1086/701124] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
10
|
Johnson AM, Chang CH, Fuller RC. Testing the potential mechanisms for the maintenance of a genetic color polymorphism in bluefin killifish populations. Curr Zool 2018; 64:733-743. [PMID: 30538733 PMCID: PMC6280095 DOI: 10.1093/cz/zoy017] [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: 09/13/2017] [Accepted: 02/28/2018] [Indexed: 02/03/2023] Open
Abstract
The maintenance of genetic variation in the face of natural selection is a long-standing question in evolutionary biology. In the bluefin killifish Lucania goodei, male coloration is polymorphic. Males can produce either red or yellow coloration in their anal fins, and both color morphs are present in all springs. These 2 morphs are heritable and how they are maintained in nature is unknown. Here, we tested 2 mechanisms for the maintenance of the red/yellow color morphs. Negative frequency-dependent mating success predicts that rare males have a mating advantage over common males. Spatial variation in fitness predicts that different color morphs have an advantage in different microhabitat types. Using a breeding experiment, we tested these hypotheses by creating populations with different ratios of red to yellow males (5 red:1 yellow; 1 red:5 yellow) and determining male mating success on shallow and deep spawning substrates. We found no evidence of negative frequency-dependent mating success. Common morphs tended to have higher mating success, and this was particularly so on shallow spawning substrates. However, on deep substrates, red males enjoyed higher mating success than yellow males, particularly so when red males were rare. However, yellow males did not have an advantage at either depth nor when rare. We suggest that preference for red males is expressed in deeper water, possibly due to alterations in the lighting environment. Finally, male pigment levels were correlated with one another and predicted male mating success. Hence, pigmentation plays an important role in male mating success.
Collapse
Affiliation(s)
- Ashley M Johnson
- Department of Animal Biology, School of Integrative Biology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Chia-Hao Chang
- Department of Animal Biology, School of Integrative Biology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Rebecca C Fuller
- Department of Animal Biology, School of Integrative Biology, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| |
Collapse
|
11
|
Brock CD, Rennison D, Veen T, Bolnick DI. Opsin expression predicts male nuptial color in threespine stickleback. Ecol Evol 2018; 8:7094-7102. [PMID: 30073070 PMCID: PMC6065272 DOI: 10.1002/ece3.4231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 04/25/2018] [Accepted: 04/26/2018] [Indexed: 12/18/2022] Open
Abstract
Theoretical models of sexual selection suggest that male courtship signals can evolve through the build-up of genetic correlations between the male signal and female preference. When preference is mediated via increased sensitivity of the signal characteristics, correlations between male signal and perception/sensitivity are expected. When signal expression is limited to males, we would expect to find signal-sensitivity correlations in males. Here, we document such a correlation within a breeding population of threespine stickleback mediated by differences in opsin expression. Males with redder nuptial coloration express more long-wavelength-sensitive (LWS) opsin, making them more sensitive to orange and red. This correlation is not an artifact of shared tuning to the optical microhabitat. Such correlations are an essential feature of many models of sexual selection, and our results highlight the potential importance of opsin expression variation as a substrate for signal-preference evolution. Finally, these results suggest a potential sensory mechanism that could drive negative frequency-dependent selection via male-male competition and thus maintain variation in male nuptial color.
Collapse
Affiliation(s)
- Chad D. Brock
- Department of Integrative BiologyUniversity of Texas at AustinTexas
- Biodiversity Institute & the Department of BotanyUniversity of WyomingLaramieWyoming
| | - Diana Rennison
- Institute of Ecology and EvolutionUniversity of BernBernSwitzerland
| | - Thor Veen
- Department of Integrative BiologyUniversity of Texas at AustinTexas
- Life SciencesQuest UniversitySquamishBCCanada
| | | |
Collapse
|
12
|
Lackey ACR, Martin MD, Tinghitella RM. Male competition and speciation: expanding our framework for speciation by sexual selection. Curr Zool 2018; 64:69-73. [PMID: 29492040 PMCID: PMC5809040 DOI: 10.1093/cz/zoy009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Alycia C R Lackey
- Department of Biological Sciences, Binghamton University, Binghamton, NY 13902, USA
| | - Michael D Martin
- Department of Biology, Oxford College of Emory University, Oxford, GA 30054, USA
| | - Robin M Tinghitella
- Department of Biological Sciences, University of Denver, Denver, CO 80208, USA
| |
Collapse
|