Species diversity and genetic variation of caligids (Copepoda: Siphonostomatoida) infecting the marine fishes of Kerala coast, India

Knowledge of the genetic diversity of species in a biological community is useful for assessing the ecological and evolutionary processes that define the structure and dynamics of that community. We investigated the potential relationship between the trans-specific genetic diversity (or genetic diversity across tree species) and the diversity of tree species in a tropical subdeciduous forest. The nucleotide variation of the concatenated regions ITS 1 and ITS 3 (ITS1-3) was used to determine the trans-specific genetic diversity of 19 species of trees in five local communities at El Ocote Biosphere Reserve (REBISO), Chiapas, Mexico. Tree diversity was obtained by counting individual trees within 0.1 ha circular plots in each locality. The relationship between trans-specific genetic diversity and species diversity was established through simple linear regressions between genetic diversity parameters and community diversity. A correlation matrix was built with genetic distances (Kimura’s two-parameter model) and differences in species diversity between communities. A significant relationship was observed between nucleotide diversity (π) and species richness ( Sp), and a negative association between haplotype diversity and gamma diversity (γ). Our results show species-rich and genetically diverse tree communities and a weak association between trans-specific genetic variation and species diversity in tree communities at REBISO. This research suggests a possible ecological and genetic relationship within each community. Genetic diversity values may provide an important degree of variation upon which environmental selection pressures could operate, which may be helpful to face the current environmental modifications associated with climatic change.

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Species Diversity and Intraspecific Genetic Variation of Reticulitermes (Isoptera: Rhinotermitidae) Subterranean Termites in Woodland and Urban Environments of Missouri

Annals of the Entomological Society of America ◽

10.1603/008.102.0513 ◽

2009 ◽

Vol 102 (5) ◽

pp. 868-880 ◽

Cited By ~ 2

Author(s):

Olga P. Pinzon ◽

Richard M. Houseman

Keyword(s):

Genetic Variation ◽

Species Diversity ◽

Urban Environments ◽

Subterranean Termites ◽

Intraspecific Genetic Variation

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Hybrid origin of a cichlid population in Lake Malawi: implications for genetic variation and species diversity

Molecular Ecology ◽

10.1046/j.1365-294x.2003.01905.x ◽

2003 ◽

Vol 12 (9) ◽

pp. 2497-2504 ◽

Cited By ~ 66

Author(s):

Peter F. Smith ◽

Ad Konings ◽

Irv Kornfield

Keyword(s):

Genetic Variation ◽

Species Diversity ◽

Lake Malawi ◽

Hybrid Origin

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Genetic variation in marine fishes as a test of the niche-variation hypothesis

Nature ◽

10.1038/249670a0 ◽

1974 ◽

Vol 249 (5458) ◽

pp. 670-672 ◽

Cited By ~ 66

Author(s):

GEORGE N. SOMERO ◽

MICHAEL SOULÉ

Keyword(s):

Genetic Variation ◽

Marine Fishes ◽

Niche Variation ◽

Niche Variation Hypothesis

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Parasitic isopods of the family Cymothoidae from south Indian fishes

Parasitology ◽

10.1017/s003118200006786x ◽

1964 ◽

Vol 54 (2) ◽

pp. 211-223 ◽

Cited By ~ 16

Author(s):

N. Krishna Pillai

Keyword(s):

Marine Fishes ◽

Brood Pouch ◽

Preliminary Diagnosis ◽

Larval Stages ◽

Kerala Coast ◽

South Indian ◽

The Family ◽

Parasitic Isopods

In the present paper seven species of cymothoid isopods parasitic on the marine fishes of the Kerala coast are described. A preliminary diagnosis of three of them was published earlier (Pillai, 1954). Full descriptions of all the species are given below. The larval stages described were in all cases taken from the brood pouch. The present work forms part of a thesis for which the author was awarded the Ph.D. Degree by the Kerala University.

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Temporal Changes and Spatial Determinants of Plant Species Diversity and Genetic Variation

Long-Term Ecological Research ◽

10.1007/978-90-481-8782-9_20 ◽

2010 ◽

pp. 279-297 ◽

Cited By ~ 7

Author(s):

Cornelia Baessler ◽

Stefan Klotz ◽

Walter Durka

Keyword(s):

Genetic Variation ◽

Species Diversity ◽

Plant Species ◽

Temporal Changes ◽

Plant Species Diversity

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Genetic variation in a tropical tree species influences the associated epiphytic plant and invertebrate communities in a complex forest ecosystem

Philosophical Transactions of the Royal Society B Biological Sciences ◽

10.1098/rstb.2010.0183 ◽

2011 ◽

Vol 366 (1569) ◽

pp. 1329-1336 ◽

Cited By ~ 54

Author(s):

Sharon E. Zytynska ◽

Michael F. Fay ◽

David Penney ◽

Richard F. Preziosi

Keyword(s):

Genetic Variation ◽

Species Diversity ◽

Tree Species ◽

Positive Association ◽

Ecological Communities ◽

Significant Positive Association ◽

Invertebrate Communities ◽

Single Tree ◽

Epiphytic Plant ◽

The Impact

Genetic differences among tree species, their hybrids and within tree species are known to influence associated ecological communities and ecosystem processes in areas of limited species diversity. The extent to which this same phenomenon occurs based on genetic variation within a single tree species, in a diverse complex ecosystem such as a tropical forest, is unknown. The level of biodiversity and complexity of the ecosystem may reduce the impact of a single tree species on associated communities. We assessed the influence of within-species genetic variation in the tree Brosimum alicastrum (Moraceae) on associated epiphytic and invertebrate communities in a neotropical rainforest. We found a significant positive association between genetic distance of trees and community difference of the epiphytic plants growing on the tree, the invertebrates living among the leaf litter around the base of the tree, and the invertebrates found on the tree trunk. This means that the more genetically similar trees are host to more similar epiphyte and invertebrate communities. Our work has implications for whole ecosystem conservation management, since maintaining sufficient genetic diversity at the primary producer level will enhance species diversity of other plants and animals.

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