Abstract：
:Sexual selection can lead to rapid evolution of sexual traits and striking morphological diversity across taxa. In populations where competition for mates is intense, males sometimes evolve distinct behavioral strategies along with morphological differences that help them secure mating opportunities. Strong postcopulatory selection and differential resource allocation across male strategy type can result in strategy-specific differences in sexual traits, such as sperm morphology, ejaculate components, and testis size. Some polymorphic species also have strategy-specific genital morphology. Thus far, among vertebrates, this has only been observed in fish. Here, we present the first morphological description of the intromittant copulatory organ, the hemipenis, of the three mating types of the side-blotched lizard, Uta stansburiana, from a population that exhibits alternative mating strategies. We found that the isometrically scaling hemipenis was shortest in the nonterritorial (yellow) morph that sneaks copulations with other males' mates. Although the hemipenes were generally the same shape across morphs, the usurping territorial (orange) morph had a significantly wider apical horn than the nonterritorial sneaker morph. Sneaker males also had smaller relative body masses than both the mate-guarding (blue) morph and the usurper morph, and shorter tibia than the usurper morph. This study using a small sample of males suggests that strong sexual selection may drive genital trait differentiation across morphs within populations of terrestrial vertebrates.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Gilman CA,Corl A,Sinervo B,Irschick DJdoi
10.1002/jmor.20930subject
Has Abstractpub_date
2019-02-01 00:00:00pages
184-192issue
2eissn
0362-2525issn
1097-4687journal_volume
280pub_type
杂志文章abstract：:During ontogeny, the apical and basal components of dicamptodontid teeth exhibit three major developmental stages: nonpedicellate, subpedicellate, and pedicellate. Premetamorphic larvae tend to have nonpedicellate teeth, incompletely or recently metamorphosed individuals tend to have subpedicellate teeth, and fully tr...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051990204
更新日期：1989-02-01 00:00:00
abstract：:The development of diet-induced phenotypic differences in numbers of sensilla on the antennae of the grasshopper Schistocerca americana was studied using the exuviae produced at each molt. This made it possible to follow changes within an individual insect. In the first instar, insects had similar numbers of four sens...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10026
更新日期：2002-11-01 00:00:00
abstract：:Using immunohistochemical labeling against acetylated a-tubulin and serotonin in combination with confocal laser scanning microscopy and 3D-reconstruction, we investigated the temporary freshwater pond inhabitant Branchinella sp. (Crustacea: Branchiopoda: Anostraca) for the first time to provide detailed data on the d...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20585
更新日期：2016-11-01 00:00:00
abstract：:The functional anatomy of the hindlimb of 12 species of viverrids was studied with relation to locomotion. The animals were allocated to primary locomotor categories on the basis of their anatomy and locomotion. The climbing, arboreal walking category (Nandinia binotata) is characterized by a small sacroiliac articula...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051480208
更新日期：1976-02-01 00:00:00
abstract：:In spite of the growing interest in rodents with subterranean activity in general and the spalacids (Spalacidae) in particular, little is known about the biology of most members of this clade, such as the Chinese bamboo rat (Rhizomys sinensis). Here, we analyzed the ear morphology of R. sinensis with respect to hearin...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20519
更新日期：2016-05-01 00:00:00
abstract：:The oral dentition and type and number of taste buds (TB) on the lips and in the oropharyngeal cavity were compared by means of SEM in 11 species of cardinal fishes (Apogonidae) belonging to five genera. The occurrence of a dense cover of skin papillae on the lips of some species (e.g., Apogon frenatus), as well as di...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10186
更新日期：2004-03-01 00:00:00
abstract：:The origins and evolution of the three major clades of modern amphibians are still a source of controversy, and no general consensus exists as to their relationship to the various known Paleozoic taxa. This may indicate that additional character complexes should be studied to resolve their phylogenetic relationship. T...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10769
更新日期：2009-12-01 00:00:00
abstract：:Topological and histological analyses of Mabuya mabouya embryos at different developmental stages showed an extraembryonic membrane sequence as follows: a bilaminar omphalopleure and progressive mesodermal expansion around the whole yolk sac at gastrula stages; mesodermal split and formation of an exocoelom in the ent...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10138
更新日期：2003-11-01 00:00:00
abstract：:The design of minimum-weight structures that retain their integrity under dynamic loading regimes has long challenged engineers. One solution to this problem found in both human and biological design is the optimization of weight and strength by hollowing a structure and replacing its inner core with supportive struts...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10302
更新日期：2006-10-01 00:00:00
abstract：:Tooth development and replacement in fetal and adult viviparous caecilians (Amphibia: Gymnophiona) are described and analyzed according to current theories of tooth succession. The fetal dentition differs from that of the adult in morphology, position, and function. Teeth are used by fetuses to scrape the oviducal epi...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051480104
更新日期：1976-01-01 00:00:00
abstract：:In this study, we compare and contrast armoring strategies during early ontogeny among three related species of marine turtles: the hawksbill, a species that diverged about 29 mya from the loggerhead and Kemp's ridley, which diverged from one another about 16 mya. Our purpose was to determine whether there was a corre...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20844
更新日期：2018-09-01 00:00:00
abstract：:The morphology and probable evolution of the depressor muscles of the lower jaw, innervated by the seventh cranial nerve (VII;M. Ceratomandibularis, M. Depressor Mandibulae), in larval, neotenic, and metamorphosed Urodela were investigated. Observations on innervation and skeletal connections of the muscles were inclu...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/(SICI)1097-4687(199707)233:1<77::AID-JMOR7
更新日期：1997-07-01 00:00:00
abstract：:Mate, prey, and predator recognition often depend on the integration of information from multiple sensory modalities including visual, auditory, and/or olfactory inputs. In Crotalinae, the eyes sense visible light while the pit organs detect infrared (IR) radiation. Previous studies indicate that there is significant ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20483
更新日期：2016-01-01 00:00:00
abstract：:This study examines the allometric scaling relationships of the cetacean humerus, radius, and ulna. Bone lengths and diameters were measured for 20 species of odontocete and three species of mysticete cetaceans, representing eight of the nine extant cetacean families. The scaling of individual bone proportions (bone l...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1052220208
更新日期：1994-11-01 00:00:00
abstract：:This study describes the male reproductive cycle of Sibynomorphus mikanii from southeastern Brazil considering macroscopic and microscopic variables. Spermatogenesis occurs during spring-summer (September-December) and spermiogenesis or maturation occurs in summer (December-February). The length and width of the kidne...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20099
更新日期：2013-02-01 00:00:00
abstract：:Ultrastructural studies of spermiogenesis and sperm morphology have found many characters that are likely to provide clues to the phylogeny of the Platyhelminthes. However, the lack of information on many free-living groups has been a limiting factor. There is a single description of the spermatogenesis and spermatozo...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20800
更新日期：2018-05-01 00:00:00
abstract：:It has been hypothesized that fluctuating asymmetry (FA) may provide an indication of the functional importance of structures within an organism, with structures that more strongly impact fitness being more symmetric. Based on this idea, we predicted that for tetrapods in which the forelimbs and hindlimbs play an uneq...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20967
更新日期：2019-04-01 00:00:00
abstract：:We describe the cranial ontogeny of an australidelphian marsupial, Dasyurus albopunctatus, using a combination of qualitative and quantitative approaches. We examined in detail qualitative morphological changes of just-weaned individuals as compared to old adults; specifically, changes in 31 morphological structures (...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10420
更新日期：2006-04-01 00:00:00
abstract：:Internal and external head structures of males of Strepsiptera were examined and the head of a species of Mengenilla is described in detail. The results suggest a reinterpretation of some structures. The head of basal extant strepsipterans is subprognathous, whereas it is strictly orthognathous in the groundplan of St...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10261
更新日期：2006-05-01 00:00:00
abstract：:Amphisbaenians are fossorial, predominantly limbless squamate reptiles with distinct cranial shapes corresponding to specific burrowing behaviors. Due to their cryptic lifestyles and the scarcity of museum specimens, little is known of their intraspecific variation, particularly regarding cranial osteology. This repre...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20564
更新日期：2016-09-01 00:00:00
abstract：:The function of the septomaxilla of nonmammalian synapsids has long been problematic. Distinctive features of this bone, including a prominent intranarial process and a septomaxillary canal and foramen, are characteristic of pelycosaurs and nonmammalian therapsids, but are lost in their mammalian descendants. Numerous...
journal_title：Journal of morphology
pub_type： 杂志文章,评审
doi：10.1002/1097-4687(200007)245:1<29::AID-JMOR3>3.0.C
更新日期：2000-07-01 00:00:00
abstract：:We provide a detailed description of the larval morphology of the Great Basin spadefoot toad (Scaphiopus intermontanus), a species with documented morphological variability in larval structures associated with feeding. We based our findings on laboratory-raised individuals fed a herbivorous diet. We characterized the ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1094
更新日期：2002-05-01 00:00:00
abstract：:Studies of echinoid microscopic anatomy over the last two centuries have created a number of inaccuracies and mistakes that have accumulated in the descriptions of the intricate organization of the coelomic system of Echinoidea. To clarify the situation, we reconstructed the axial complex and radial complex of the ech...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20811
更新日期：2018-06-01 00:00:00
abstract：:We studied the functional morphology of the female reproductive system of the purple stone crab Danielethus crenulatus. The most remarkable feature is the relative storage capacity and extensibility of the seminal receptacles. These receptacles are a pair of simple sacs that lack internal structures dividing the inter...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20685
更新日期：2017-07-01 00:00:00
abstract：:Data from adult birds, crocodilians, Sphenodon, squamates, turtles, and from the chick embryo are compared to test conflicting hypotheses of homology of the deep dorsal thigh muscles of birds and other reptiles. This comparison suggests that: (1) avian Mm. iliofemoralis externus and iliotrochantericus caudalis (herein...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051890310
更新日期：1986-09-01 00:00:00
abstract：:Abyssocottus korotneffi and Cottinella boulengeri are the deepest-living bottom species among freshwater teleosts. Both species have gill arches with nodulous gill-rakers equipped with sharp denticles. The gill-slit behind the fourth arch is reduced considerably and the hemibranch corresponding to this slit is absent,...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/(SICI)1097-4687(199708)233:2<105::AID-JMOR
更新日期：1997-08-01 00:00:00
abstract：:Bristle positions in two rows of bristles on the basitarsus of the second leg of the fruitfly Drosophila melanogaster were analyzed in order to determine the accuracy of bristle placement within these rows. Within each row the positions of the two terminal bristles were found to be approximately equally variable, and ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051780203
更新日期：1983-11-01 00:00:00
abstract：:Relationships among families of the shark order Carcharhiniformes are still being debated, for example, in relation to the inclusion of hammerhead sharks (Sphyrnidae) and the tiger shark (Galeocerdo cuvier) in the Carcharhinidae. Previous morphological studies have not analyzed the phylogenetic significance of axial c...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20916
更新日期：2019-01-01 00:00:00
abstract：:The tectorial structures of the inner ear of the proteid salamander Proteus anguinus were studied with transmission and scanning electron microscopy in order to analyze the ultrastructure of the otoconial membranes and otoconial masses of the maculae and the tectorial membrane of the papilla amphibiorum. Both otoconia...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1052010106
更新日期：1989-07-01 00:00:00
abstract：:A reduction in free ribosomes and increases in rough endoplasmic reticulum and Golgi complexes in follicle cells during oogenesis suggest their involvement in supplying precursor material for synthesis of the vitelline and chorionic membranes of the ichneumonid parasitoid Campoletis sonorensis. The inner region of the...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051740207
更新日期：1982-11-01 00:00:00
