Sexual size dimorphism lacking in small mammals
... Soricomorpha) from published literatures. The sexual difference in size between the sexes is not-significant either in 33 little female-biased SSD or in 62 little male-biased SSD species. The non-significant difference in body size of 62 little male-biased SSD species showed that sexual selection di ...
... Soricomorpha) from published literatures. The sexual difference in size between the sexes is not-significant either in 33 little female-biased SSD or in 62 little male-biased SSD species. The non-significant difference in body size of 62 little male-biased SSD species showed that sexual selection di ...
Heteronemiidae (common walking sticks) Mantidae (Mantids)
... outer pair modified into toughened tegmina to protect the inner pair. One ultrasonic sensing ear is present on the metathorax to detect bats while in flight at night. Ecology Mantids are parametabolous. The number of nymph stages varies across species. Females typically mate once, and are noted for ...
... outer pair modified into toughened tegmina to protect the inner pair. One ultrasonic sensing ear is present on the metathorax to detect bats while in flight at night. Ecology Mantids are parametabolous. The number of nymph stages varies across species. Females typically mate once, and are noted for ...
Excretory & Reproductive Anatomy
... vertebral column Varying degree of connection with reproductive system Little connection in most advanced fishes ...
... vertebral column Varying degree of connection with reproductive system Little connection in most advanced fishes ...
Unit 3 - Section 9.1 Types of Selection Overheads
... Populations have many phenotypes and genotypes. If a single allele improves survivability, even slightly, it gives a selective advantage. As a result, the frequency of that allele will increase in the population AND in subsequent generations. Natural selection causes changes in the allele frequencie ...
... Populations have many phenotypes and genotypes. If a single allele improves survivability, even slightly, it gives a selective advantage. As a result, the frequency of that allele will increase in the population AND in subsequent generations. Natural selection causes changes in the allele frequencie ...
Fact Sheet: Madagascar Hissing Cockroach
... o Adult males hiss during aggressive encounters and during courtship and mating o Females and late-stage nymphs hiss only when disturbed or threatened o Hiss is their defense against predators o Hiss can be heard up to 12 feet away Males have “horns” (females may also, but much less pronounced) o ...
... o Adult males hiss during aggressive encounters and during courtship and mating o Females and late-stage nymphs hiss only when disturbed or threatened o Hiss is their defense against predators o Hiss can be heard up to 12 feet away Males have “horns” (females may also, but much less pronounced) o ...
Reeves`s Muntjac
... Reeves’s muntjacs are mostly crepuscular, active during dawn and dusk, but some individuals also display diurnal and nocturnal tendencies. In the wild, males keep small, well-defended territories that overlap with surrounding female territories. Males mark their territories with scent glands located ...
... Reeves’s muntjacs are mostly crepuscular, active during dawn and dusk, but some individuals also display diurnal and nocturnal tendencies. In the wild, males keep small, well-defended territories that overlap with surrounding female territories. Males mark their territories with scent glands located ...
Speciation: forming a new species
... Speciation: forming a new species Species: a group of organisms that can mate and produce fertile offspring 1. same number of chromosomes ...
... Speciation: forming a new species Species: a group of organisms that can mate and produce fertile offspring 1. same number of chromosomes ...
ASexual Reproduction
... The parent organism and all of their offspring produced through parthenogenesis would die! But, with the genetic diversity that comes from sexual reproduction the possibility of the offspring surviving is enhanced. ...
... The parent organism and all of their offspring produced through parthenogenesis would die! But, with the genetic diversity that comes from sexual reproduction the possibility of the offspring surviving is enhanced. ...
In the Wild - The Maryland Zoo in Baltimore
... o Adult males hiss during aggressive encounters and during courtship and mating o Females and late-stage nymphs hiss only when disturbed or threatened o Hiss is their defense against predators o Hiss can be heard up to 12 feet away Males have “horns” (females may also, but much less pronounced) o Ca ...
... o Adult males hiss during aggressive encounters and during courtship and mating o Females and late-stage nymphs hiss only when disturbed or threatened o Hiss is their defense against predators o Hiss can be heard up to 12 feet away Males have “horns” (females may also, but much less pronounced) o Ca ...
Patterns of sexual dimorphism in Mexican alligator lizards, Barisia
... smaller average litter sizes (7 vs. 16 in this study) and a lower range of SVL (78–125 mm vs. 103–136 mm in this study). The differences between the two studies suggest geographic variation in female reproductive traits. In conclusion, natural selection for increased body size in females (due to inc ...
... smaller average litter sizes (7 vs. 16 in this study) and a lower range of SVL (78–125 mm vs. 103–136 mm in this study). The differences between the two studies suggest geographic variation in female reproductive traits. In conclusion, natural selection for increased body size in females (due to inc ...
Untitled - Knowsley Safari Park
... Adult females are big, heavy and do not have large wings, so therefore cannot fly. The males are long and slender and have very long wings that reach past the abdomen, which means they are capable of flight. Like most stick insects this species is docile by nature. It is nocturnal and will generally ...
... Adult females are big, heavy and do not have large wings, so therefore cannot fly. The males are long and slender and have very long wings that reach past the abdomen, which means they are capable of flight. Like most stick insects this species is docile by nature. It is nocturnal and will generally ...
File - Mr. Shanks` Class
... Bright coloured feathers of a male peacock is attractive for females but easy for predators to see A very successful male elephant seal may mate with dozens of females each year and hundreds of females in his lifetime, while a weak male may live a longer life but produce no offspring. In this case, ...
... Bright coloured feathers of a male peacock is attractive for females but easy for predators to see A very successful male elephant seal may mate with dozens of females each year and hundreds of females in his lifetime, while a weak male may live a longer life but produce no offspring. In this case, ...
Effect of extra prenatal testosterone on rabbit offspring at birth
... body weight (BW), litter size, and sex ratio. To avoid possible seasonal (sequential) effect, all of these measures were compared to the given does’ previous litters. As a result, male offspring had longer AGD, both in the low, and the high testosterone groups. However, sesame-oil alone also had som ...
... body weight (BW), litter size, and sex ratio. To avoid possible seasonal (sequential) effect, all of these measures were compared to the given does’ previous litters. As a result, male offspring had longer AGD, both in the low, and the high testosterone groups. However, sesame-oil alone also had som ...
Reproduction and Development
... External fertilization: release of gametes into the surrounding environment Requirement: timing! ensure sperm encounters eggs Internal fertilization: Sperm is deposited in or near the female reproductive tract and fertilization occurs in it Requirement: cooperative behavior between male and female s ...
... External fertilization: release of gametes into the surrounding environment Requirement: timing! ensure sperm encounters eggs Internal fertilization: Sperm is deposited in or near the female reproductive tract and fertilization occurs in it Requirement: cooperative behavior between male and female s ...
Male Mexican mollies grow mustaches to attract mates
... to female mollies and may represent a sexually Professor Schlupp suspects it may also be used selected trait. physically to excite the female or pass on tactile information by rubbing it against the genitals, since The Mexican molly fish (Poecilia sphenops) is a a male will often "nip" the genital a ...
... to female mollies and may represent a sexually Professor Schlupp suspects it may also be used selected trait. physically to excite the female or pass on tactile information by rubbing it against the genitals, since The Mexican molly fish (Poecilia sphenops) is a a male will often "nip" the genital a ...
Outline of: Bryja, J., Patzenhauerova, H., Albrecht, T., Mosansky, L
... 1. One of our major concerns with the results of this study were the small sample sizes used to collect the data. The largest sample size was 46 litters for one of the sub-species. Yet one of the sub-species only had 22 litters total for testing. We do not believe that either of these are large enou ...
... 1. One of our major concerns with the results of this study were the small sample sizes used to collect the data. The largest sample size was 46 litters for one of the sub-species. Yet one of the sub-species only had 22 litters total for testing. We do not believe that either of these are large enou ...
KIRKCALDY AQUARIST SOCIETY INFORMATION SHEET
... planted tank it can be successfully flock-bred, but if serious breeding is envisaged then gravid females should be placed in a specially prepared breeding tank to ensure a high percentage of fry survival. Brood can average from 12 to 30 although I have had mature females produce in excess of 50 fry. ...
... planted tank it can be successfully flock-bred, but if serious breeding is envisaged then gravid females should be placed in a specially prepared breeding tank to ensure a high percentage of fry survival. Brood can average from 12 to 30 although I have had mature females produce in excess of 50 fry. ...
Animal Nomenclature Power Point
... Animal Nomenclature By the end of the lesson the student will be able to identify the species of animal and common names of farm animals. ...
... Animal Nomenclature By the end of the lesson the student will be able to identify the species of animal and common names of farm animals. ...
breeding systems and reproductive strategies of mammals
... • Description of mating behavior and parental care by both sexes • Parental care & potential rate of reproduction of each sex • If males contribute no parental care (many mammals), they have high potential rate of reproduction; fitness limited by access to females; males most competitive sex ...
... • Description of mating behavior and parental care by both sexes • Parental care & potential rate of reproduction of each sex • If males contribute no parental care (many mammals), they have high potential rate of reproduction; fitness limited by access to females; males most competitive sex ...
Monkey, red tailed guenon 2.15 - The Maryland Zoo in Baltimore
... • Store food in cheek pouches and move away from group to eat to avoid theft by other monkeys Social Structure • Red-tailed guenons live together in family groups ranging from about 7 to 35 individuals o One adult male and several females and juveniles • Groups feed together during the day and sleep ...
... • Store food in cheek pouches and move away from group to eat to avoid theft by other monkeys Social Structure • Red-tailed guenons live together in family groups ranging from about 7 to 35 individuals o One adult male and several females and juveniles • Groups feed together during the day and sleep ...
Animal Behavior - Phillips Scientific Methods
... Mating Systems • Promiscuous – no mating bonds • Monogamous – strong bond forms one male one female for a long period • Polygamous – one sex mates with others ...
... Mating Systems • Promiscuous – no mating bonds • Monogamous – strong bond forms one male one female for a long period • Polygamous – one sex mates with others ...