The Comparative Ecology of Three Sympatric Species of California Blennies of the Genus Hypsoblennius gill (Teleostomi, Blenniidae)

The Comparative Ecology of Three Sympatric Species of California Blennies of the Genus Hypsoblennius gill (Teleostomi, Blenniidae)
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加州鳊鱼属三个同域物种的比较生态学(Teleostomi,Blenniidae)

DOI:
10.2307/1942296
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发表时间:
1970
影响因子:
6.1
通讯作者:
J. Mccosker
J. Mccosker
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
J. Stephens;Robert Karl. Johnson;G. Key;J. Mccosker

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本文报道了三种动眼鱼,即高动眼鱼H.吉尔伯蒂,jenkinsi,和genkills,共存于浅沃茨的圣迭戈暖温带地区。进行了广泛的实地和实验室研究,以确定这些物种的生态分化程度。优势种H.吉尔伯蒂和H. jenkinsi显示了行为和生态的专业化,这是缺乏H。将军这些差异包括:生境偏好; gilberti栖息于潮间带和邻近的潮下带卵石层; jenkinsi只在潮下才被发现,栖息在无聊的蛤蜊洞穴,Serpulorbis管或贻贝床。成虫活动力:H.吉尔伯蒂是一种蜿蜒的物种,其栖息地半径通常可达15 m。个人在低潮时返回“家”池,并已证明在45 m处的大位移时归航。H. jenkinsi是久坐不动的,很少在离家一米以外的地方徘徊。归巢在这个物种中没有表现出来,即使是小到5米的位移。领土:领地性的程度与运动相关,定居物种具有高度的领地性,而这种现象在蜿蜒的形式中不太容易表现出来。上述差异已在实验室得到实验验证。所有物种都是杂食性的,肠道内容物的差异似乎代表了不同的栖息地协会。繁殖发生在春季至夏末;卵由男性看守。根据温度的不同,孵化时间为4-18天;幼虫约3个月。成虫大小的差异反映了不同的幼虫和第一年的增长加上不同的寿命;确定的增长尚未得到证明。成虫的大小因物种而异,是一个重要的生态因素。在小管状种H. jenkinsi,管大小控制鱼的大小(生境匹配)可能通过捕食者选择。由不同大小的管组成的微囊支持着平均鱼体大小显著不同的种群。在纽波特湾,一种病毒感染改变了种群结构,淋巴囊肿在温暖的月份达到流行病的水平。这三个物种之间的生态差异似乎表明,H。genomic是最普遍的(原始的)形式。其同类物的专门化使它们适应于在有限竞争下共存。H.在南加州,没有专业化能力和竞争力的普通人在边缘栖息地生存,特别是最近被人类改造的地区。
Three species of the blenniid genus Hypsoblennius, H. gilberti, jenkinsi, and gentilis, coexist in the shallow waters of the San Diegan Warm Temperate Region. Extensive field and laboratory studies were carried out to determine the degree of ecological differentiation present in these species. The dominant species, H. gilberti and H. jenkinsi show both behavioral and ecological specializations which are lacking in H. gentilis. These differences include: Habitat preference; H. gilberti inhabits the rocky intertidal and adjacent subtidal cobble; H. jenkinsi is found only subtidally, inhabiting boring clam burrows, Serpulorbis tubes or mussel beds. Adult motility: H. gilberti is a meandering species commonly including a radius as large as 15 m within its home range. Individuals return to "home" pools at low tide and homing has been demonstrated for displacements as great at 45 m. H. jenkinsi is sedentary rarely wandering more than a meter from its home refuge. Homing was not demonstrated in this species, even for displacements as small as 5 m. Territoriality: Degree of territoriality correlates with movement, the sedentary species is highly territorial while this phenomena is less easily demonstrated in the meandering form. The above differences have been experimentally verified in the laboratory. All species are omnivorous, differences in gut content seem to represent different habitat associations. Reproduction occurs from spring through late summer; the eggs are guarded by the male. Hatching occurs in 4—18 days depending on temperature; the larvae are pelagic for about three months. Adult size differences reflect differing larval and first year growth plus differing longevity; determinate growth has not been demonstrated. Adult size varies between the species and is an important ecological factor. In the small tubiculous species H. jenkinsi, tube size controls fish size (habitat matching) probably through predator selection. Habitats made up of different tube sizes support populations of significantly different mean fish size. In Newport Bay, population structures are altered by a viral infection, Lymphocystis which reaches epidemic levels during the warm months. The ecological differences between the three species seem to indicate that H. gentilis is the most generalized (primitive) form. The specializations of its congeners adapt them to coexistence with limited competition. H. gentilis unspecialized and unable to compete in Southern California survives here in marginal habitats, particularly areas recently modified by man.
DOI: 10.2307/1931600
发表时间: 1958-01-01
期刊: ECOLOGY
影响因子: 4.8
作者:
MACARTHUR, RH
通讯作者: MACARTHUR, RH