The disruption of habitat isolation among three Hexagrammos species by artificial habitat alterations that create mosaic-habitat
スポンサーリンク
概要
- 論文の詳細を見る
In coastal areas in Japan, three species of greenling (Hexagrammos spp.) can hybridize. In a natural reef setting we showed that Hexagrammos agrammus and H. octogrammus established their breeding territories in a shallow area where seaweed was abundant, whereas H. otakii established breeding territories in a deep area that was sparsely covered with seaweed. This difference in habitat use resulted in H. otakii being distributed separately from the other two species, thereby reducing the potential for hybridization. However, all the three species co-occurred in an artificial area near a breakwater. This area is characterized by steep slopes and complex stacked concrete structures, which create a mosaic-habitat consisting of a shallow environment with seaweed and a deep environment with sparse seaweed, allowing the three species to breed within a single area. Our results suggest that man-made structures can create an artificial mosaic-habitat that can disrupt habitat isolation and promote hybridization between species.
- Springer Japanの論文
- 2010-01-01
著者
-
Munehara Hiroyuki
Usujiri Fisheries Station, Field Science Center for Northern Biosphere, Hokkaido University
-
Munehara Hiroyuki
Usujiri Fisheries Laboratory Faculty Of Fisheries Hokkaido University
-
KIMURA Motoko
Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University
-
Kimura Motoko
Division Of Biosphere Science Graduate School Of Environmental Science Hokkaido University
関連論文
- Alternative Male Mating Tactics of the Substrate Brooding Cichild Telmatochromis temporalis in Lake Tanganyika(Behavior Biology)
- MORPHOLOGICAL STUDY FOR EUSPERM AND PARASPERM DETERMINATION IN THE SPERMATOGENETIC TESTES OF THE COTTID FISH, HEMILEPIDOTUS GILBERTI(Developmental Biology,Abstracts of papers presented at the 76^ Annual Meeting of the Zoological Society of Japan)
- DIMORPHIC SPERM FORMATION OF THE COTTID FISH, HEMILEPIDOTUS GILBERTI, IN CELL CULTURE(Developmental Biology,Abstracts of papers presented at the 75^ Annual Meeting of the Zoological Society of Japan)
- Annual reproductive cycle of the helmet crab Telmessus cheiragonus on the sublittoral zones in Usujiri, southern Hokkaido, Japan
- Spawning behavior and interspecific breeding in three Japanese greenlings (Hexagrammidae)
- Breeding season, spawning time, and description of spawning behaviour in the Japanese ornate dragonet, Callionymus ornatipinnis : a preliminary field study at the northern limit of its range
- Seasonal occurrence and sexual maturation of Japanese pygmy squid (Idiosepius paradoxus) at the northern limits of their distribution
- Age Determination and Growth from Otolith Daily Growth Increments of Hypoptychus dybowskii (Gasterosteiformes)
- A new cottid species, Icelus sekii (Perciformes: Cottoidei) from Hokkaido, Japan
- Initiation of sperm motility depending on a change in external osmotic pressure in the noncopulatory marine cottid fish Gymnocanthus herzensteini
- Composition, biomass, and photosynthetic activity of the benthic algal communities in a littoral zone of Lake Baikal in summer
- Annual cycle of testicular maturation in the helmet crab Telmessus cheiragonus
- The disruption of habitat isolation among three Hexagrammos species by artificial habitat alterations that create mosaic-habitat
- Diel rhythms of oxygen consumption and activity level of juvenile flownder Paralichthys olivaceus
- Comparative studies of testicular structure and sperm morphology among copulatory and non-copulatory sculpins (Cottidae : Scorpaeniformes : Teleostei)