Evolution of host specificity in monogeneans parasitizing African cichlid fish.
Evolution of host specificity in monogeneans parasitizing African cichlid fish.
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DOI：
10.1186/1756-3305-7-69
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发表时间：
2014-02-14
影响因子：
3.2
通讯作者：
Šimková A
中科院分区：
文献类型：
--
作者：
Mendlová M;Šimková A
与寄生虫宿主特异性相关的模式和过程是研究宿主-寄生虫相互作用的中心主题之一。我们研究了寄生非洲淡水鱼的单殖吸虫(Cichlidogyus和Scutogyus)中寄主特异性的进化和决定因素。我们分析了(1)寄主专一性与寄生虫系统发育之间的联系，(2)寄主专一性的潜在形态计量学相关性(即寄生虫体大小和附着器的形态计量学)，(3)遵循生态专化性假说和可预测资源专化性假说(即寄主体型大小和寿命被认为是寄主可预测性的衡量标准)的寄主专一性的潜在决定因素，以及(4)慈鱼的孵化行为在剑鱼和盾叶回多样化中的作用。寄主专一性与叶蝉属和盾叶回属种的系统发育关系不明显。寄主特异性的系统发育树分析表明，寄生同属叶蝉属寄主的中间专家代表了叶蝉/鳞状回类群的祖先状态。寄生虫附着器的形态与寄主专一性之间只有微弱的关系。我们的研究不支持关于可预测资源的专业化或生态专业化假说。然而，寄主专一性与鱼类的系统发育和亲代照料方式密切相关。我们的结果证实，寄主专一性不是Cichlidogyus/Scutogyus寄生虫的衍生条件，可能反映了历史限制以外的其他因素。附着器形态计量学只能部分(如果有的话)反映寄生虫对寄主物种的适应，可能是因为快速进化的丽鱼的形态相似(在我们的研究中分析)。然而，我们的研究表明，慈鱼的亲代照顾行为可能与其寄主专一性有关。
The patterns and processes linked to the host specificity of parasites represent one of the central themes in the study of host-parasite interactions. We investigated the evolution and determinants of host specificity in gill monogeneans of Cichlidogyrus and Scutogyrus species parasitizing African freshwater fish of Cichlidae. We analyzed (1) the link between host specificity and parasite phylogeny, (2) potential morphometric correlates of host specificity (i.e. parasite body size and the morphometrics of the attachment apparatus), and (3) potential determinants of host specificity following the hypothesis of ecological specialization and the hypothesis of specialization on predictable resources (i.e. host body size and longevity were considered as measures of host predictability), and (4) the role of brooding behavior of cichlids in Cichlidogyrus and Scutogyrus diversification. No significant relationships were found between host specificity and phylogeny of Cichlidogyrus and Scutogyrus species. The mapping of host specificity onto the parasite phylogenetic tree revealed that an intermediate specialist parasitizing congeneric cichlid hosts represents the ancestral state for the Cichlidogyrus/Scutogyrus group. Only a weak relationship was found between the morphometry of the parasites’ attachment apparatus and host specificity. Our study did not support the specialization on predictable resources or ecological specialization hypotheses. Nevertheless, host specificity was significantly related to fish phylogeny and form of parental care. Our results confirm that host specificity is not a derived condition for Cichlidogyrus/Scutogyrus parasites and may reflect other than historical constraints. Attachment apparatus morphometry reflects only partially (if at all) parasite adaptation to the host species, probably because of the morphological similarity of rapidly evolved cichlids (analyzed in our study). However, we showed that parental care behavior of cichlids may play an important role linked to host specificity of Cichlidogyrus/Scutogyrus parasites.
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DOI：
10.1046/j.1095-8312.2002.00114.x
发表时间：
2002-12-01
影响因子：
1.9
作者：
Desdevises, Y;Morand, S;Legendre, P
通讯作者：
Legendre, P
影响因子：
1.3
作者：
DOUELLOU, L
通讯作者：
DOUELLOU, L
影响因子：
2
作者：
Gillardin, Celine;Vanhove, Maarten P. M.;Volckaert, Filip A. M.
通讯作者：
Volckaert, Filip A. M.
DOI：
10.1098/rstb.1991.0030
发表时间：
1991-04-29
影响因子：
6.3
作者：
HARVEY, PH;KEYMER, AE
通讯作者：
KEYMER, AE
影响因子：
6.5
作者：
Clayton, DH;Bush, SE;Johnson, KP
通讯作者：
Johnson, KP