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Depth-related differences in territory size and defense in the herbivorous cichlid,neolamprologus moorii, in lake tanganyika
  • K. Karino
  • Biology
  • Ichthyological Research
  • 15 February 1998
Neolamprologus moorii, a small herbivorous cichlid of Lake Tanganyika, defends its territory against food competitors. Territory size and territorial defense were compared between two sites atExpand
FEMALE MATE PREFERENCE IS FOR MALE TOTAL LENGTH, NOT TAIL LENGTH IN FERAL GUPPIES
TLDR
Testing whether female choice was based upon male tail length or total length in a feral guppy population in Okinawa, Japan revealed that female guppies chose mates by total length, not by tail length itself, suggesting that there are some costs for tail elongation or trade-offs between multiple sexually selected traits. Expand
Larval nutritional environment determines adult size in Japanese horned beetles Allomyrina dichotoma
TLDR
Female body size was determined by larval nutrition, and, thus, larval condition might influence future female fecundity and the evolution of female choice for better oviposition site. Expand
Male morphological characteristics and mating success in a protogynous coral reef fish, Halichoeres melanurus
TLDR
It is suggested that large body size is favored in male–male competition for establishing mating territories and that conspicuous body color isavored in female mate choice in this protogynous fish. Expand
Reproductive behavior of the territorial herbivoreStegastes nigricans (Pisces: Pomacentridae) in relation to colony formation
TLDR
The results of this study suggest that colonial distribution of S. nigricans may bring several benefits in reproduction to the colony members, but also seems to bring costs (e.g. easy mate findings within fellow colony members). Expand
Reversed sex-change in the protogynous reef fish Labroides dimidiatus
TLDR
The sex of L. dimidiatus is strictly determined by social status whenever it changes after mate loss, and the first report of reversed sex-change among protogynous wrasses is reported. Expand
Increased prevalence of luteinizing hormone beta-subunit variant in Japanese infertility patients.
TLDR
The frequency of a common luteinizing hormone variant in a Japanese population and its significance in infertility was determined and it was found that the variant was more frequent in patients with ovulatory disorders than other patients. Expand
Facial Recognition in a Group-Living Cichlid Fish
TLDR
Digital models are used to demonstrate that facial features are the visual cue used for individual recognition in the social fish Neolamprologus pulcher, and suggest that fish can distinguish individuals accurately using facial colour patterns. Expand
Heritability of male secondary sexual traits in feral guppies in Japan
TLDR
The results compared with previous work in native guppy populations suggest female mate preferences based upon these male secondary sexual traits and low predation pressure in this population. Expand
Heritability of the algal-foraging ability: an indirect benefit of female mate preference for males' carotenoid-based coloration in the guppy, Poecilia reticulata
TLDR
A maze experiment was performed in guppies to examine the heritability of the foraging ability for algae, carotenoid resources in nature, and the result may support the hypothesis that indirect benefits influence the evolution of female choice. Expand
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