Translator Disclaimer
1 June 2008 Habitat association of Orthoptera in El Cimatario National Park, Querétaro, México
Author Affiliations +
Abstract

Orthopteran community composition varies with habitat quality. The distribution of Orthoptera species depends primarily on which vegetation type provides food resources and habitat. For insight into this relation between distribution and habitat quality we studied the 21 most-abundant orthopteran species in El Cimatario National Park (State of Querétaro, México) in four vegetation types. We found that nearly half of these species tended to inhabit a particular vegetation type. This study is a first contribution exploring the relation between vegetation and distribution of Mexican Orthoptera.

Introduction

Orthoptera are often the most abundant insects in open habitats with short (knee-length or less) vegetation, where the rays of the sun fall directly on the soil. These insects are thus very common in prairies, grasslands, xerophytic scrubs, and disturbed and cultivated areas (Fontana et al. 2002, Capinera et al. 2004). In contrast, there are fewer species, and these usually lower in abundance, inhabiting mature forests, where incoming radiation is filtered by tree canopies, and living in wetlands with flooded soils that might cause difficulties for oviposition (Capinera et al. 2004).

Orthoptera community composition can vary considerably, depending on habitat type (Kemp et al. 1990). Many biotic and abiotic habitat variables influence orthopteran populations and communities: plant species composition (Strohecker et al. 1968, Kemp et al. 1990), vegetation structure (Clarke 1948), soil type (Pdaft 1984), temperature, radiation, humidity, food availability, oviposition sites, shelters from predators (Kemp et al. 1990), or biotic interactions such as predation or parasitism (Joern & Pruess 1986). Vegetation is one of the key factors that determines Orthoptera distribution, since the different species occupy specific habitats according to food availability and their microhabitat thermic requirements (Anderson 1964, Fielding & Brusven 1992, Squitier & Capinera 2002).

El Cimatario National Park is located in the state of Querétaro in the central part of México: the aim of this study was to determine the habitat association by vegetation type of the most abundant species of Orthoptera in the park.

Materials and methods

El Cimatario National Park (lat 20° 28′ 30″ and lat 20° 33′ 23″ North, long 100° 09′ 37″ and long 100° 23′ 12″ West) is located to the Southwest of the State of Querétaro, México, and covers 2 447.84 ha (National Official Gazette 1982). Its surface is of volcanic origin from the Pliocene, with a soil texture that runs from fine to medium (INEGI 1986). Its maximum altitude is 2400 m (SARH 1994). The climate is temperate-semidry, with a rainy season from June through September. The annual rainfall is 549.3 mm and the annual average temperature 18 to 19 °C, with a maximum of 22 °C in May (INEGI 1997).

Vegetation types

El Cimatario National Park has heterogeneous native vegetation, representative of semidesertic zones in Querétaro (Baltazar et al. 2004). It has different vegetative communities (Fig. 1), which include cactus scrub (Fig. 1A), tropical deciduous forest (Fig. 1B), induced pasture (Fig. 1C) and reforested vegetation (Fig. 1D). The natural prevalent vegetation is cactus scrub (Zamudio et al. 1992). All of the vegetation in the Park is disturbed to different degrees due to human activities in the past, such as agriculture, grazing, extraction of forest resources, and human settlements. The four vegetation types are described below.

Fig. 1A.

The commonest vegetation type of El Cimatario Park is Opuntia Scrub. For color version, see Plate VI.

i1082-6467-17-1-83-f101.jpg

Fig. 1B.

Tropical forest characterized by seasonal leaf-loss. For color version, see Plate VI.

i1082-6467-17-1-83-f102.jpg

Fig. 1C.

Induced pasture is an open, grassy vegegation type, the soil scarred by tezontle extraction. For color version, see Plate VI.

i1082-6467-17-1-83-f103.jpg

Fig. 1D.

Reforested areas of the park have involved replanting of Eucalyptus and other exotics. For color version, see Plate VI.

i1082-6467-17-1-83-f104.jpg

Cactus scrub.— This vegetation type (Fig. 1A) is characterized by shrubs measuring ca 4 m high, with small leaves, spines and thick stems (Zamudio et al. 1992). It is the predominant vegetation in the park, and grows principally where there is a flat surface, or little slope. Baltazar et al. (2004) give the cacti comprising this vegetation as Myrtillocactus geometrizans, Opuntia leucotricha, O. imbricata and Nyctocereus serpentinus. Trees include Acacia schaffneri, A. farnesiana (Fabaceae), Ipomoea mucuroides, Karwinskia humboldtiana (Rhamnaceae), Anisacanthus quadrifidus, A. pumilis (Acanthaceae), Calliyria eriophylla (Fabaceae), Condalia velutina (Rhamnaceae), Croton ciliatoglyulifer (Euphorbiaceae) and Zaluzania augusta var. rzedowskii. (Asteraceae). The most abundant herbs are Bouvardia laeivs (Rubiaceae), Oxalis decaphylla (Oxalidaceae) and Zephyrantes sp.

Tropical deciduous forest.— This forest is dominated by trees between 4 and 12 m high that ramify near their base and that lose their leaves during the dry season (Fig. 1B). Several species have an exfoliating bark with bright colors (Zamudio et al. 1992). Baltazar et al. (2004) mention that the tree stratum in El Cimatario National Park is dominated by Bursera fagaroides, B. palmeri (Burseraceae), Cedrela dugesii (Meliaceae), Ipomoea murucoides (Convolvulaceae), Erythrina coralloides (Fabaceae), Lysiloma microphylla (Fabaceae), Senna polyantha (Fabaceae) and Zanthoxylum fagara (Rutaceae). Also several herbs grow on this kind of vegetation, such as Rivina humilis (Phytolaccaceae), and climbing plants, including Dioscorea militaris (Dioscoreaceae) and Passiflora suberosa (Passifloraceae). Furthermore, some epiphytic plants, such as Tillandsia recurvata and T. calothyrsus (Bromeliaceae), grow at the tree canopy level. Although disturbed, the tropical deciduous forest has native trees such as Albizia plurijuga (Fabaceae), Cedrela dugesii and Erythrina coralloides, which are under (legal) ecological protection, according to Mexican Official Standard NOM-059-ECOL-2001.

Induced pasture.—The pastures selected for this study were those where a red porous volcanic rock called tezontle has traditionally been extracted for construction of light bricks, temazcal baths, and bread ovens (Fig. 1C). This habitat is made up mostly of very short grasses (30 cm tall at most) that grow on the tezontle, as well as scattered shrubs of Eysenhardtia polystachya. Some of the grasses found are Melinis repens, Chloris gayana, Cynodon dactylon, Bromus carinatus, Setaria grisebachii, and Sporobolus atrovirens.

Reforested vegetation.— According to Baltazar et al. (2004) reforestation took place where there was pastureland caused by overgrazing with goats and cows (Fig. 1D). The representative species from induced pastures are Rhynchelytrum repens, Brachiaria meziana (both Poaceae), Evolvulus alsinoides (Convolvulaceae), Dyssodia pinnata (Asteraceae), Hoffmanseggia glauca (Fabaceae), Macroptilum gibbosifolium (Fabaceae), Milla biflora (Alliaceae), Oxalis decaphylla (Oxalidaceae), and Phyla nodiflora Greene (Verbenaceae). Into these disturbed areas were introduced plants from other parts of the country: Pinus greggii, P. michoacana, P. cembroides, P. montezumae (Pinaceae), Cupressus lindleyi (Cupressaceae), Fraxinus uhdei (Wenz.) Lingelsh. (Oleaceae), Ulmus mexicana Planch. (Ulmaceae), and Acacia spp. (Fabaceae). From foreign countries Jacaranda mimosaefolia (Bignoniaceae), Eucalyptus spp. (Myrtaceae), Casuarina equisetifolia L. (Casuarinaceae), Schinus molle L. (Anacardiaceae), and Melia azedarach L. (Meliaceae).

In recent years, wild plants have been used for reforestation such as Acacia farnesiana, Eysenhardtia polystachya (Fabaceae), Prosopis laevigata (Fabaceae), and Yucca filifera (Agavaceae) — but we sampled only in the old reforestation zones.

Sampling

We visited the park once or twice a month from June 2005 through May 2006. On each visit we sampled from a total of 12 sites: cactus scrub (4 sites), tropical deciduous forest (2 sites), induced pasture (2 sites), and reforested vegetation (4 sites). Four people using nets, swept all vegetation within a 50 × 50-m plot at each site. We spent 50 min per site (Joern 1979, Squitier & Capinera 2002) during the day, varying sampling times from 9:00 to 18:00 h; sampling effort was made comparable at each site.

We rotated assignments among observers in order to minimize sampling and counting differences (Przybyszewsky & Capinera,–1990). We counted the nymphs and adults for each species. We selected the 21 most abundant Orthoptera species, and compared the species abundance between sites, adding together all the data obtained during the sampling year.

Data analysis

To determine whether or not the species found are randomly distributed throughout vegetation types, we employed the ‘Indicator value method’ of Dufrêne & Legendre (1997). This procedure (IndVal) computes a percent index for each species. For a particular species it is the product of its specificity and fidelity to a vegetation type: of a species’ abundance in a given vegetation type [specificity], and of its relative frequency in all vegetation types studied [fidelity]. Its value for a given species does not depend on the relative abundance of other species, or on the classification method used for the sites. We applied the Dufrêne & Legendre formulae as follows:

i1082-6467-17-1-83-eq01.gif

We calculated Aij, mean abundance, for each species i in each sampled site of vegetation type j. N individualsij is the mean number of individuals of species i across sample sites of the vegetation type j; N individualst is the sum of the mean numbers of individuals of species i in all the vegetation types. Aij is highest when species i is only present in vegetation type j.

We calculated Bij, the relative frequency of occurrence of species i at sites of vegetation type j. N sitesij is the number of sites with the vegetation type j where species i is present, while N sitest is the total number of sites belonging to the same vegetation type. Bij is highest when species i is present at all sites with vegetation type j.

We computed Aij, mean abundance of species i at sites of each vegetation type j, compared to all groups in the study; we then multiplied it by Bij, the relative frequency of occurrence of species i at the sites of each vegetation type j.

We tested the statistical significance of each IndVal by using a Monte Carlo Permutation test (N=1000) implemented in PC-ORD (McCune & Grace 2002).

Results

The Indicator Species Analysis shows nine of 21 species clearly associated with one vegetation type. The Gomphocerinae species stand out: Achurum sumichrasti, Amblytropidia mysteca, Eritettix simplex, and Psoloessa texana were preferentially distributed on reforested vegetation (on the grass); these four have a high indicator value (Table 1). Both species of Conocephalus (Conocephalus (Aphauropus) leptopterus and Conocephalus (Anisoptera) magdalenae) were clearly associated with reforested vegetation, along with Aidemona alticola (all on the grasses). The melanopline Philocleon anomalus was characteristic of cactus scrub. For the remainder of the species we found no strong habitat association. Two of the Dichopetala species found have not yet been described; we have used their ‘field names’ D. n. sp. “long ovipositor tauriformis*rdquo; and D. n. sp. “Cercus I tauriformis”.

Table 1.

Indicator value (INDVAL) of the 21 most-abundant species at El Cimatario National Park, Querétaro, in regard to different vegetation types. *Significant indicator species from a Monte Carlo Permutation test (N = 1000)

Discussion

In this study we found Orthoptera species were strongly associated with vegetation type. This finding could depend mainly on the different food requirements of the taxonomic groups.

Gomphocerinae are commonly distributed in prairies and pastures, because they feed on grasses (Uvarov 1977, Otte 1981, Joern 1982, Craig et al. 1999). We found them very clearly associated with grasses in the reforested vegetation of the Park. We can also confirm that the genus Conocephalus occurs on grasses in open pastures (Naskrecki 2000, Capinera et al. 2004).

Melanoplinae prefer habitats in which grasses are mixed with abundant herbs and Poaceae on which they normally feed (Uvarov 1977, Joern & Pruess 1986, Evans 1988). At El Cimatario National Park the cactus scrub shows these characteristics having gone through great anthropogenic disturbance. We found two melanopline species strongly tied to the cactus scrub, Aidemona alticola and Philocleon anomalus.

Our results show that some gomphocerinae, conocephalinae and melanoplinae species, by their association with the habitats, can serve as indicators of the vegetation perturbation of the entire park. This is because the natural prevalent vegetation is cactus scrub (Zamudio et al., 1992) which includes neither grasses nor herbs as representative plants. Though further studies on host plants must be done.

Unfortunately we sampled in only a few sites per vegetation type, particularly for the reforested vegetation (2) and induced pasture (2); so more sampling sites are needed to clarify preferences of the other species for vegetation types. Nonetheless a melanopline, Phoetaliotes nebrascensis, was commonly observed on grasses (its food supply) (Craig et al., 1999). Brachystola mexicana was observed more abundantly on low bushes or even on the litter, Oecanthus varicornis on bush branches, and Schistocerca cohni on tall bushes or on three branches where its occurence is well known (Uvarov 1977).

It is interesting to note that the three Dichopetala species, which as a group comprised the most abundant species of the Park (Table 1), showed some association tendency to different habitats, perhaps thus avoiding competition. However, other studies have found that competition among Orthoptera seems to be low (Mulkern 1980). Further investigations on their oviposition site preferences and food sources are needed. The Dichopetala species were found principally on the shrubs of the different vegetation types, and in the lower and medium height tree strata. Other researchers have found that this genus lives in bushes and tall grasses (Cohn & Fontana pers. com.).

We should clarify that we found few examples of Oedipodinae species, because these are mostly distributed at sites where vegetation is almost absent and where they exhibit (cryptic) camouflage with the bare ground (Rowell 1971, Craig et al. 1999). And we did not take terrestrial Orthoptera, such as Gryllidae, into account.

We found that nearly half of the examined orthopteran species inhabit particular vegetation types (9 of 21 species). The next step should be to identify the food resources of these species: to assess the richness, abundance, and seasonal turnover of their host plants and to determine how they are available during the year. Our work is a first attempt to address these topics for a Mexican orthopteran community.

Acknowledgments

We thank Dr. Theodore Cohn (Michigan University, U.S.A.) for his valuable suggestions in the planning of this study. Special thanks to our biologist friends for their priceless field help: E. Zamorán Pineda, A. Salgado López, V. J.J. Pérez Rodríguez, J. E. Vázquez Mejía, M. Mora Jarvio, J. Durán Murrieta, A. Martínez Aquino, A. H. Molina Vázquez, F. Azpeitia Sandoval, E. Á. Morales Ramírez, E. D. Molina Servin, C. M. Peláez Rocha, E. Piña Covarrubias, I. Castellanos Vargas, I. Almanza Valenzuela, J. F. Santamaría Alvarado, M. Mendoza Ramírez, N. E. Chávez Bermeo, S. Del Río Galván and V. Cibrián Llanderal. Thanks are also extended to the main director of PANEC, M. del Carmen Siurob, as well as to the workers of the reserve who cared for us so kindly. We thank Judith Xochitl Ponce Wainer and Dr. Glenn K. Morris for the insightful english revision and observations. Thanks so much to Maricela Gómez Sánchez for the Poaceae determination. Finally thanks to the Instituto de Fitosanidad and to the Colegio de Postgraduados for their logistic support. This research was supported in part by a CONACYT grant to P. García-García. We thank Glenn Morris for the insightful english revision and observations.

References

1 

N. L. Anderson 1964. Some relationships between grasshoppers and vegetation. Annals Entomological Society of America 57:736–742.

2 

J. O. R. Baltazar, M. Martínez, and L. S. Hernández . 2004. Guía de Plantas Comunes del Parque Nacional “el Cimatario” y sus Alrededores. Universidad Autónoma de Querétaro. Querétaro.

3 

J. L. Capinera, R. D. Scott, and T. J. Walker . 2004. Field Guide to Grasshoppers, Katydids and Crickets of the United States. Cornell University Press. New York.

4 

E. J. Clarke 1948. Studies in the ecology of british grasshoppers. Transactions of the Royal Entomological Society of London 99:173–222.

5 

D. P. Craig, C. E. Bock, B. C. Bennett, and J. H. Bock . 1999. Habitat relationships among grasshoppers (Orthoptera: Acrididae) at the western limit of the great plains in Colorado. American Midland Naturalist 142:314–327.

6 

M. Dufrêne and P. Legendre . 1997. Species assemblages and indicator species: the need for a flexible asymmetrical approach. Ecological Monographs 67:345–366.

7 

E. W. Evans 1988. Grasshopper (Insecta: Orthoptera: Acrididae) assemblages of tallgrass prairie: influences of fire frequency, topography, and vegetation. Canadian Journal of Zoology 66:1495–1501.

8 

D. J. Fielding and M. A. Brusven . 1992. Food and habitat preferences of Melanoplus sanguinipes and Aulocara elliotti (Orthoptera: Acrididae) on disturbed rangeland in southwestern Idaho. Environmental Entomology 85:783–788.

9 

P. Fontana, F. M. Buzzetti, A. Cogo, and B. Odé . 2002. Guida al riconoscimento e allo studio di Caballete, Grillo, Mantidi e Insetti Affini del Veneto. Museo Naturalistico Archeologico di Vicenza. Vicenza. pp.

10 

T. Gardiner, M. Pye, R. Field, and J. Hill . 2002. The influence of sward height and vegetation composition in determining the habitat preferences of three Chorthippus species (Orthoptera: Acrididae) in Chelmsford, Essex, UK. Journal of Orthoptera Research 11:207–213.

11 

Instituto Nacional de Estadística, Geografía e Informática (INEGI) 1986. Síntesis geográfica, nomenclátor y anexo cartográfico del estado de Querétaro.

12 

Instituto Nacional de Estadística, Geografía e Informática (INEGI) 1997. Cuaderno estadístico municipal, Querétaro.

13 

A. Joern 1979. Resource utilization and community structure in assemblages of arid grassland grasshoppers (Orthoptera: Acrididae). Transactions American Entomological Society 105:253–300.

14 

A. Joern 1982. Vegetation structure and microhabitat selection in grasshoppers (Orthoptera: Acrididae). The Southwestern Naturalist 27:197–209.

15 

A. Joern and K. P. Pruess . 1986. Temporal constancy in grasshopper assemblies (Orthoptera: Acridoidea). Ecological Entomology 11:379–385.

16 

W. P. Kemp, S. J. Harvey, and K. M. ÓNeill . 1990. Patterns of vegetation and grasshopper community composition. Oecologia 83:299–308.

17 

B. McCune and J. B. Grace . 2002. Analysis of ecological communities. MjM Software. Gleneden Beach, Oregon, US.

18 

G. B. Mulkern 1980. Population fluctuations and competitive relationships of grasshoppers species (Orthoptera: Acrididae). Transactions of the American Entomological Society 106:1–41.

19 

P. Naskrecki 2000. Katydids of Costa Rica. Vol. 1. Systematics and Bioacoustics of the Conehead Katydids. The Orthopterists' Society. Philadelphia, Pennsylvania.

20 

Norma Oficial Mexicana-059-Ecol-1994 Determina las especies de flora y fauna silvestres terrestres y acuáticas en peligro de extinción, amenazadas, raras y sujetas a protección especial.

21 

National Official Gazette 21 July 1982.

22 

National Official Gazette 16 May 1994.

23 

D. Otte 1981. The North American Grasshoppers. Vol. 1. Acrididae: Gomphocerinae and Acridinae. Harvard University Press. Cambridge.

24 

R. E. Pdaft 1984. Species richness, density, and diversity of grasshoppers (Orthoptera: Acrididae) in a habitat of the mixed grass prairie. Canadian Entomologist 116:703–709.

25 

J. Przybyszewski and J. L. Capinera . 1990. Spatial and temporal patterns of grasshopper (Orthoptera: Acrididae) phenology and abundance on a shortgrass prairie. Journal of Kansas Entomological Society 63:405–413.

26 

C. H. F. Rowell 1971. The variable coloration of the acridoid grasshoppers. Advance Insect Physiology 8:145–198.

27 

SARH 1994. Diagnóstico del Parque Nacional el Cimatario, Estado de Querétaro. Subsecretaría Forestal y de Fauna Silvestre.

28 

M. J. Squitier and J. L. Capinera . 2002. Observations on the phenology of common Florida grasshoppers (Orthoptera: Acrididae). Florida Entomologist 85:227–234.

29 

H. F. Strohecker, W. W. Middlekauff, and D. C. Rentz . 1968. The Grasshoppers of California (Orthoptera: Acridoidea). University of California Press. London.

30 

B. Uvarov 1977. Grasshoppers and Locusts: Behaviour, Ecology, Biogeography and Population Dynamics. Centre for Overseas Pest Research. London.

31 

S. Zamudio, J. Rzedowskii, E. Carranza, and G. Calderón de Rzedowskii . 1992. La vegetación en el Estado de Querétaro Instituto de Ecología A.C., Centro Regional del Bajío. Consejo de Ciencia y Tecnología del Estado de Quéretaro.

Patricia L. García-García, Paolo Fontana, Lorenzo Marini, Armando Equihua-Martínez, Julio Sánchez-Escudero, Jorge Valdez-Carrasco, and Zenón Cano-Santana "Habitat association of Orthoptera in El Cimatario National Park, Querétaro, México," Journal of Orthoptera Research 17(1), 83-87, (1 June 2008). https://doi.org/10.1665/1082-6467(2008)17[83:HAOOIE]2.0.CO;2
Published: 1 June 2008
JOURNAL ARTICLE
5 PAGES


SHARE
ARTICLE IMPACT
Back to Top