Order: Testudines Modern turtles are placed into one of two
... three or four genera, depending on the source. There are two subfamilies, the Staurotypinae and the Kinosterninae, each of which have two genera. The genera of the Staurotypinae, Claudius and Staurotypus, are endemic to central Mexico and range south into northern Central America. The Kinosterninae ...
... three or four genera, depending on the source. There are two subfamilies, the Staurotypinae and the Kinosterninae, each of which have two genera. The genera of the Staurotypinae, Claudius and Staurotypus, are endemic to central Mexico and range south into northern Central America. The Kinosterninae ...
Pattern of shell utilization by the hermit crab Paguristes tortugae
... waves. This is true for P. tortugae, which occurs in rocks and corals and therefore may be better protected by heavy shells in these habitats, with greater stability against currents and a frequent downfall escape movement (hermits enter the shell and drop from the rocks/corals falling to the crevic ...
... waves. This is true for P. tortugae, which occurs in rocks and corals and therefore may be better protected by heavy shells in these habitats, with greater stability against currents and a frequent downfall escape movement (hermits enter the shell and drop from the rocks/corals falling to the crevic ...
Parasite Abundance and Color-Biased Predation of Fiddler Crabs
... parasite load between males and females. A linear regression was used to investigate the relationship between carapace size and claw size in males. An ANOVA analysis was used to analyze differences in average parasite abundance among the three mangrove sites. The redness and brightness of fiddler cr ...
... parasite load between males and females. A linear regression was used to investigate the relationship between carapace size and claw size in males. An ANOVA analysis was used to analyze differences in average parasite abundance among the three mangrove sites. The redness and brightness of fiddler cr ...
Intraspecific variation in biology and ecology of deer
... of animals in different geographic areas, or different contexts (continuous forest, farmland with scattered woodland areas etc.20–22 and, to a lesser extent, season,23 and throughout their European range they may consume literally hundreds of different species. The same is broadly true for other spe ...
... of animals in different geographic areas, or different contexts (continuous forest, farmland with scattered woodland areas etc.20–22 and, to a lesser extent, season,23 and throughout their European range they may consume literally hundreds of different species. The same is broadly true for other spe ...
Honeybees. - Eva Crane Trust
... In the tropics various species of Meliponini have been domesticated; like the Apini, whose only genus is Apis, these form permanent colonies and therefore store honey that they consume in dearth periods. Bumble bees (Bombus) have been 'kept' occasionally for their honey, and some of the larger speci ...
... In the tropics various species of Meliponini have been domesticated; like the Apini, whose only genus is Apis, these form permanent colonies and therefore store honey that they consume in dearth periods. Bumble bees (Bombus) have been 'kept' occasionally for their honey, and some of the larger speci ...
Conspecific Brood Parasitism in Birds: A Life
... life-history evolution—and we hope to show that viewing CBP from within such a framework can help integrate and clarify the large body of literature that has developed. Why is CBP so interesting? We can suggest at least four reasons. First, as a discrete alternative to the primary reproductive strat ...
... life-history evolution—and we hope to show that viewing CBP from within such a framework can help integrate and clarify the large body of literature that has developed. Why is CBP so interesting? We can suggest at least four reasons. First, as a discrete alternative to the primary reproductive strat ...
Ecology and Behaviour of Indian Peafowl ( Pavo cristatus) in
... energetically costly for a male, and therefore, ensure that only for long periods of time, resulting in greater mating success. In the present study, it was found that adult males spend more ...
... energetically costly for a male, and therefore, ensure that only for long periods of time, resulting in greater mating success. In the present study, it was found that adult males spend more ...
Chapter 51
... ! In polygamous relationships, an individual of one sex mates with several individuals of the other sex ! Species with polygamous mating systems are usually sexually dimorphic: males and females ...
... ! In polygamous relationships, an individual of one sex mates with several individuals of the other sex ! Species with polygamous mating systems are usually sexually dimorphic: males and females ...
video slide - Somerset Area School District
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Diel cycle in the percentage abundance of
... examination of embryo development. For each species, a total of 300 individuals was examined for each 24 h period. Each female was dissected carefully with fine needles under a stereomicroscope and the embryos in the brood pouch were removed and examined. Following the approach of other investigator ...
... examination of embryo development. For each species, a total of 300 individuals was examined for each 24 h period. Each female was dissected carefully with fine needles under a stereomicroscope and the embryos in the brood pouch were removed and examined. Following the approach of other investigator ...
Diel cycle in the percentage abundance of
... examination of embryo development. For each species, a total of 300 individuals was examined for each 24 h period. Each female was dissected carefully with fine needles under a stereomicroscope and the embryos in the brood pouch were removed and examined. Following the approach of other investigator ...
... examination of embryo development. For each species, a total of 300 individuals was examined for each 24 h period. Each female was dissected carefully with fine needles under a stereomicroscope and the embryos in the brood pouch were removed and examined. Following the approach of other investigator ...
gordonetal2015eco
... the literature may differ slightly on ranges of each category, sustained swimming is generally performed using mainly red myotomal muscle, which enables fish to maintain constant speed locomotion for extended periods of time (>200 min) with little fatigue (Beamish 1978; Webb 1994; Breen et al. 2004) ...
... the literature may differ slightly on ranges of each category, sustained swimming is generally performed using mainly red myotomal muscle, which enables fish to maintain constant speed locomotion for extended periods of time (>200 min) with little fatigue (Beamish 1978; Webb 1994; Breen et al. 2004) ...
What is a Katydid?
... Most katydids live for around a year, and mating season is during the late summer. Females lay their eggs in rows on their preferred host plant; eggs are oval in shape. Katydids are paurometabolous (incomplete metamorphosis) in which juvenile molts (instars) look like miniature versions of adults, a ...
... Most katydids live for around a year, and mating season is during the late summer. Females lay their eggs in rows on their preferred host plant; eggs are oval in shape. Katydids are paurometabolous (incomplete metamorphosis) in which juvenile molts (instars) look like miniature versions of adults, a ...
video slide
... • Cranes are birds that have captivated people’s interest – Possibly because they are large and their behavior is easily observed – Males anAd females cranes engage in elaborate courtship rituals involving graceful dance-like movement and synchronized vocalizations ...
... • Cranes are birds that have captivated people’s interest – Possibly because they are large and their behavior is easily observed – Males anAd females cranes engage in elaborate courtship rituals involving graceful dance-like movement and synchronized vocalizations ...
P431 ABS Founders Award Poster: SOCIAL BEHAVIOR 2
... Mate choice and male-male competitions for access to mates can be powerful selective forces leading to evolution. Thus, a comprehensive understanding of factors determining these behaviors is critical. However, studies considering the role of natural resources in sexual selection are still lacking. ...
... Mate choice and male-male competitions for access to mates can be powerful selective forces leading to evolution. Thus, a comprehensive understanding of factors determining these behaviors is critical. However, studies considering the role of natural resources in sexual selection are still lacking. ...
Part 1: 7,4 mb - Rhino Resource Center
... and tropical Asia, in previous eras through to the late Pleistocene there were comparably large mammals of a diversity of forms on all continents, occupying a range ofecosystems from arctic steppe and taiga to tropical rain forest and semidesert. During the mesozoic era certain reptilian herbivores ...
... and tropical Asia, in previous eras through to the late Pleistocene there were comparably large mammals of a diversity of forms on all continents, occupying a range ofecosystems from arctic steppe and taiga to tropical rain forest and semidesert. During the mesozoic era certain reptilian herbivores ...
The reproductive biology of a Central American cichlid Neetroplus
... fry for up to six weeks. A total of 503 breeding pairs were monitored for breeding success. Breeding pairs of N. nematopus are sexually dimorphic in size, with females averaging 39% of male body mass. Fry emerged from 85% of nesting cavities. After three weeks, only 30% of the broods were present in ...
... fry for up to six weeks. A total of 503 breeding pairs were monitored for breeding success. Breeding pairs of N. nematopus are sexually dimorphic in size, with females averaging 39% of male body mass. Fry emerged from 85% of nesting cavities. After three weeks, only 30% of the broods were present in ...
Myrmecophilous butterflies utilise ant-
... Abstract. 1. Selection of a safe oviposition site is important for herbivorous insects whose immature stages have limited mobility. Female herbivores rely on environmental cues for this choice, and presence of natural enemies or mutualistic partners may be important in this process. 2. Some butterfl ...
... Abstract. 1. Selection of a safe oviposition site is important for herbivorous insects whose immature stages have limited mobility. Female herbivores rely on environmental cues for this choice, and presence of natural enemies or mutualistic partners may be important in this process. 2. Some butterfl ...
Individual quality, early-life conditions, and reproductive success in
... survivors are likely to be of higher quality than individuals of the same cohort that died earlier (Vaupel et al. 1979). Thus, our analyses included cohorts from 1984 to 1992 for goats (23 females), from 1973 to 1991 for sheep (123 females), and from 1975 to 1990 for deer (84 females). We calculated ...
... survivors are likely to be of higher quality than individuals of the same cohort that died earlier (Vaupel et al. 1979). Thus, our analyses included cohorts from 1984 to 1992 for goats (23 females), from 1973 to 1991 for sheep (123 females), and from 1975 to 1990 for deer (84 females). We calculated ...
gator fact sheet
... The time it takes for alligators to become mature, and thus able to reproduce, varies from population to population. Reproductive maturity in alligators is primarily related to body size, so the age at which an individual can breed depends on how fast it grows throughout its life. Both males and fem ...
... The time it takes for alligators to become mature, and thus able to reproduce, varies from population to population. Reproductive maturity in alligators is primarily related to body size, so the age at which an individual can breed depends on how fast it grows throughout its life. Both males and fem ...
Inter- and intraspecific parasitism interactions
... Parasite (pathogen) = organism that obtains its nutrients from one or a very few host individuals, causing harm* but not causing host death immediately. Parasitoid = egg to larval organism that obtains its nutrients from a single host individual, causing host death in the end (incl. parasitic Hymeno ...
... Parasite (pathogen) = organism that obtains its nutrients from one or a very few host individuals, causing harm* but not causing host death immediately. Parasitoid = egg to larval organism that obtains its nutrients from a single host individual, causing host death in the end (incl. parasitic Hymeno ...
Behavioral ecology
Behavioral ecology is the study of the evolutionary basis for animal behavior due to ecological pressures. Behavioral ecology emerged from ethology after Niko Tinbergen outlined four questions to address when studying animal behavior which are the proximate causes, ontogeny, survival value, and phylogeny of behavior.If an organism has a trait which provides them with a selective advantage (i.e. has an adaptive significance) in a new environment natural selection will likely favor it. This was originally proposed as the theory of natural selection by Charles Darwin. Adaptive significance therefore refers to the beneficial qualities, in terms of increased survival and reproduction, a trait conveys. Genetic differences in individuals lead to behavioral differences that in turn drive differences in adaptation, reproductive success, and ultimately evolution.Individuals are always in competition with others for limited resources, including food, territories, and mates. Conflict will occur between predators and prey, between rivals for mates, between siblings, mates, and even between parents and their offspring.