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Proceedings of the American Philosophical Society, ISSN 0003-049X, 6/1942, Volume 85, Issue 4, pp. 325 - 342
Samples of populations of the foraminifer Elphidium crispum Linnaeus numbering from 500 to 1,000 individuals were taken both in the littoral and sublittoral... 
Gametes | Seas | Asexual reproduction | Life span | Algae | Frequency distribution | Sediments | Sexual reproduction | Population growth rate | Cytoplasm
Journal Article
Evolution, ISSN 0014-3820, 6/1956, Volume 10, Issue 2, pp. 213 - 227
In the evolutionary process under consideration, organs essential for biparental reproduction in normally hermaphroditic animals are eliminated enabling... 
Parthenogenesis | Spermatozoa | Seminal vesicles | Asexual reproduction | Male animals | Evolution | Testes | Sexual reproduction | Earthworms | Worms
Journal Article
Transactions of the American Microscopical Society, ISSN 0003-0023, 4/1959, Volume 78, Issue 2, pp. 207 - 211
Journal Article
Journal of Animal Ecology, ISSN 0021-8790, 2/1966, Volume 35, Issue 1, pp. 77 - 104
1. The occurrence of thirty-six species of Cladocera in Hampton Court Long Water during the course of four years is recorded. Two of the species, Scapholeberis... 
Parthenogenesis | Asexual reproduction | Seasons | Bisexuality | Female animals | Water temperature | Eggs | Chlorophylls | Egg production | Low temperature
Journal Article
Journal of the Ohio Herpetological Society, ISSN 0473-9868, 12/1966, Volume 5, Issue 4, pp. 115 - 152
The polymorphic species Lacerta saxicola Eversmann forms 19 distinct forms in the Caucasus, four of which (armeniaca, dahli, rostombekovi, and unisexualis) are... 
Parthenogenesis | Biological taxonomies | Mating behavior | Asexual reproduction | Lizards | Male animals | Bisexuality | Triploidy | Female animals | Hybridity
Journal Article
Proceedings of the Royal Society of London. Series B. Biological Sciences, ISSN 0962-8452, 11/1968, Volume 171, Issue 1023, pp. 261 - 272
In sheltered bays on the Pacific sandy shoreline of Auckland, New Zealand, populations of the enteropneust Balanoglossus australiensis (Morton 1950) have been... 
Body regions | Genitalia | Intestines | Asexual reproduction | Liver | Septum | Gonads | Proboscis | Pharynx | Integument | BIOLOGY
Journal Article
The Quarterly Review of Biology, ISSN 0033-5770, 6/1969, Volume 44, Issue 2, pp. 189 - 208
Possible selective advantages, including some new ones, for hermaphroditism are reviewed. It is proposed that hermaphroditism should evolve under the following... 
Parthenogenesis | Larvae | Asexual reproduction | Animals | Hermaphroditism | Male animals | Evolution | Inbreeding | Evolutionary genetics | Sexual reproduction | Biological Evolution | Models, Biological | Selection, Genetic | Disorders of Sex Development
Journal Article
M. SC THESIS AUGUST 1969. 69 P, 23 FIG, 8 TAB, 21 REF. OWRR A-011-ME(3), 08/1969
VARIOUS ASPECTS OF THE BIOLOGY OF P. ELEGANS WERE INVESTIGATED TO COMPARE THE FINDINGS TO THOSE OF EUROPEAN STUDIES, AND TO INVESTIGATE FURTHER THE PHENOMENON... 
INTERTIDAL AREAS | PYGOSPIO ELEGANS | POLYCHAETES | MARINE BIOLOGY | REGENERATION | MAINE | AQUATIC ANIMALS | WATER POLLUTION EFFECTS | ASEXUAL REPRODUCTION | REPRODUCTION | AQUATIC POPULATIONS
Journal Article
1970, 3D ed., American lecture series, publication no. 780, 253
Book
Biological Bulletin, ISSN 0006-3185, 6/1971, Volume 140, Issue 3, pp. 400 - 415
1. Metandrocarpa taylori Huntsman (1912) is an ovoviviparous colonial ascidian with separate zooids connected by a common basal tunic, which reproduces... 
Larvae | Asexual reproduction | Phytoplankton | Ova | Ovaries | Testes | Sexual reproduction | Budding | Larval development | Gonads
Journal Article
Ecology, ISSN 0012-9658, 5/1972, Volume 53, Issue 3, pp. 408 - 418
Most lakes display extensive seasonal variation in both their biotic and abiotic components. The question posed in this paper is how do rotifers adapt to this... 
Gene flow | Asexual reproduction | Animals | Plankton | Ecological competition | Population structure | Bisexuality | Female animals | Eggs | Genotypes
Journal Article
Oikos, ISSN 0030-1299, 1/1973, Volume 24, Issue 2, pp. 287 - 294
In dense mass cultures, Enchytraeus bigeminus Nielsen et Christensen, reproduces solely by fragmentation and subsequent regeneration. In cultures started with... 
Reproductive behavior | Sexual maturity | Asexual reproduction | Habitats | Sexual reproduction | Immatures | Density | Worms | Eggs | Cocoons
Journal Article
Ecology, ISSN 0012-9658, 7/1973, Volume 54, Issue 4, pp. 798 - 808
Three species and one subspecies of Trientalis are recognized in North America, but only Trientalis borealis Raf., the northern starflower, occurs in eastern... 
Tubers | Biological taxonomies | Rhizomes | Asexual reproduction | Plant growth | Germination | Photoperiod | Plants | Sexual reproduction | Stems
Journal Article
The American Midland Naturalist, ISSN 0003-0031, 4/1974, Volume 91, Issue 2, pp. 343 - 359
The ecology of the hardwood forest herb Uvularia perfoliata L. (Liliaceae) was studied. Most phenological phases in the species life history were completed or... 
Growing seasons | Population mean | Rhizomes | Asexual reproduction | Ecological life histories | Hardwoods | Forest ecology | Forest canopy | Plants | Deciduous forests
Journal Article
Annales de parasitologie humaine et comparee, ISSN 0003-4150, 01/1975, Volume 50, Issue 1, p. 134
Journal Article
Ecology, ISSN 0012-9658, 1/1975, Volume 56, Issue 1, pp. 206 - 212
In order to examine the relationship between crowding and growth rate in green hydra (Hydra viridis), we raised animals at various levels of fixed population... 
Symbiosis | Population mean | Carotenoids | Asexual reproduction | Pigments | Acclimatization | Density | Population density | Population growth rate | Chlorophylls
Journal Article
Journal of Animal Ecology, ISSN 0021-8790, 2/1975, Volume 44, Issue 1, pp. 297 - 304
(1) The average reproductive rate of the sycamore aphid over the period 15 July to 15 August is high in years when few aphids are present early in the year and... 
Leaves | Asexual reproduction | Autumn | Body weight | Greenhouses | Summer | Saplings | Fecundity | Population density | Nymphs
Journal Article
Journal of Theoretical Biology, ISSN 0022-5193, 1976, Volume 58, Issue 1, pp. 55 - 58
It was shown in a simple model that a gene for selfing will be established in a population if and only if at least one of the selfing genotypes also... 
Biological Evolution | Parthenogenesis | Reproduction | Fertilization | Models, Biological | Reproduction, Asexual | Gene Frequency | Genotype | Pollen | Plants
Journal Article
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